Author Topic: The Set-up Thread  (Read 5896876 times)

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Roisto

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Re: The Set-up Thread
« Reply #22050 on: November 13, 2019, 05:26:05 AM »
Sorry, f4 thread, not wheels.



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A wheel like that in 99 f4 would obviously be grippier than classics. That fact about friction does not work with skate wheels. We are grinding the wheels down, wider contact patch means more material to wear down, which means more grip.
[close]

Why not? What makes skateboard wheels special that basic physics do not apply to them? Wider contact patch means more material to wear down and better roll over uneven ground but how would it mean more grip?

https://www.physlink.com/education/askexperts/ae140.cfm

"Although a larger area of contact between two surfaces would create a larger source of frictional forces, it also reduces the pressure between the two surfaces for a given force holding them together. Since pressure equals force divided by the area of contact, it works out that the increase in friction generating area is exactly offset by the reduction in pressure; the resulting frictional forces, then, are dependent only on the frictional coefficient of the materials and the FORCE holding them together.

If you were to increase the force as you increased the area to keep PRESSURE the same, then increasing the area WOULD increase the frictional force between the two surfaces.
Answered by: Paul Walorski, B.A. Physics, Part-time Physics Instructor"
[close]

I remember that. But just saying it is so doesn’t convince me no matter who you are. I know the whole friction thing is very counterintuitive if you don’t think about how friction actually works deeply enough.

I have nothing against you personally. I’d love to be proved wrong here but so far I haven’t seen any evidence to prove that on skateboard wheels specifically increasing the contact patch width increases the friction. I haven’t experienced that myself either (although my subjective experience really doesn’t matter one bit).

MalHuis

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Re: The Set-up Thread
« Reply #22051 on: November 13, 2019, 06:21:06 AM »
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Sorry, f4 thread, not wheels.

Expand Quote
A wheel like that in 99 f4 would obviously be grippier than classics. That fact about friction does not work with skate wheels. We are grinding the wheels down, wider contact patch means more material to wear down, which means more grip.
[close]
[close]

That does not count as backing your claims. You are just asserting that the surface area does affect the grip.
[close]
Oh shit, I missed that. No I didn't back them up, but I still stand by it. More material to wear down equals more resistance equals more grip.
[close]

And since you don't back your claims up, we can just continue to ignore them.

Engineer here with a background in physics, applied science and applied maths. I've done the maths, was a while back but did it nonetheless.

More area = more grip as the coefficient of the material has an exponential curve based on force (aka rebound).

Breaking into a slide will be more difficult but maintaining said slide will be easier. Vice versa on the smaller surface wheels.

That being said, we are working with very small margins when comparing same compounds. Biggest difference you could make is based on weight and the angles/force you approach the slide. Also wider wheels will be more controllable as it would want to normalize quicker, and smaller wheels will be more difficult to normalize.

I know this is difficult to understand, cant argue the theoretical science, but there is a big difference in theoretical science and applied (assumptions/fixed variables).

Roisto

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Re: The Set-up Thread
« Reply #22052 on: November 13, 2019, 08:01:29 AM »
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Sorry, f4 thread, not wheels.

Expand Quote
A wheel like that in 99 f4 would obviously be grippier than classics. That fact about friction does not work with skate wheels. We are grinding the wheels down, wider contact patch means more material to wear down, which means more grip.
[close]
[close]

That does not count as backing your claims. You are just asserting that the surface area does affect the grip.
[close]
Oh shit, I missed that. No I didn't back them up, but I still stand by it. More material to wear down equals more resistance equals more grip.
[close]

And since you don't back your claims up, we can just continue to ignore them.
[close]

Engineer here with a background in physics, applied science and applied maths. I've done the maths, was a while back but did it nonetheless.

More area = more grip as the coefficient of the material has an exponential curve based on force (aka rebound).

Breaking into a slide will be more difficult but maintaining said slide will be easier. Vice versa on the smaller surface wheels.

That being said, we are working with very small margins when comparing same compounds. Biggest difference you could make is based on weight and the angles/force you approach the slide. Also wider wheels will be more controllable as it would want to normalize quicker, and smaller wheels will be more difficult to normalize.

I know this is difficult to understand, cant argue the theoretical science, but there is a big difference in theoretical science and applied (assumptions/fixed variables).

So what you are saying is that the coefficient of friction is not constant with skateboard wheels but increases exponentially with increasing force? Or increasing force per unit of area? But the force stays the same. Force per unit of area decreases with increasing area. Are we talking about deformation of the wheel material under applied force here? If skateboard wheels were to deform enough under force to make a difference, wouldn't a narrower contact patch then provide more grip due to it deforming more as the force per unit of area is greater with a narrower contact patch?

Can you provide some more info on what you're saying as it's the first time I've heard of such and didn't really understand what exactly you were trying to say?

7th Chamber

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Re: The Set-up Thread
« Reply #22053 on: November 13, 2019, 08:41:56 AM »
Larger contact patch, more space to get taken out by a pebble.

thespacewolf

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Re: The Set-up Thread
« Reply #22054 on: November 13, 2019, 08:59:45 AM »
I've got a backlog of cool stuff I've set up since the last time I posted here but this one is a personal favorite.


DOA 8.38 square shape
Ace 44s
Niki red 54mm 96a conicals (almost identical to SF conical full shape)
Bones swiss

Love the new DOA boards. I've been messing around with the trendy square shape decks lately so when he came out with these it was a no brainer. The only thing I don't love about this setup is that it's pretty heavy with the Aces, so I'm thinking of switching them over to mini logo 8.38s to make it a little lighter and lower.

Overall though it's a keeper, Fletch always has the best minimalist graphics and the shape is a nice change of pace from the e mold/flat as fuck DOA boards (I got another one of those too though). Also he sent me a free t shirt with this graphic which is awesome.
Would you mind taking a top pic? Been looking for something like this, where does DOA get their boards made at?

Sativa Lung

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Re: The Set-up Thread
« Reply #22055 on: November 13, 2019, 10:34:41 AM »

Would you mind taking a top pic? Been looking for something like this, where does DOA get their boards made at?



Measurements are 8.38 x 31.75 with 14.25 wb.

DOA is South Central wood which is really good. It's very durable and has a sort of unique feeling to the pop.. I'd call it kind of "effortless" I guess, and it keeps the pop for a long time. Actually this is my 4th DOA board and even the first one is still perfectly skateable. Really the only complaints I've ever heard about their wood is that the standard concave is on the deep side with a fairly steep nose which some people don't like. If you've ever seen a politic board I think they're usually SC standard.

The square shape is really good, I have a couple other trendy boards and the best way I can describe this in relation to them is that it's a slightly less extreme version than say a PS Stix WKND board. The kicks aren't quite as square, the nose isn't as much of a launch ramp, and there isn't as much of a disparity between the nose and tail in steepness and size. It would probably be a pretty easy adjustment even coming from like pure tapered popsicles. If you have any questions you can also email them, he's really quick about answering and a really fucking cool dude.

jtrpma

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Re: The Set-up Thread
« Reply #22056 on: November 13, 2019, 10:42:14 AM »
the shape looks nice and the grip job is clean.


PMA

yourbreakfsat

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Re: The Set-up Thread
« Reply #22057 on: November 13, 2019, 12:08:42 PM »
Black Label Hensley board broke during solo skate trip, so had to get a new deck. Never do lipslides in places that you're unfamiliar with.


- Polar Aaron Herrington P9 Shape (Nose is tapered, tail is squared off, board tapers down towards the tail) 8.625" X 32.25" with 14.5" WB
- Indy 159 FH with 1/8" Bones Risers
- Spitfire F4 54mm 99a Icy Tablets
- Bones Big Balls
- MOB Grip

I am aware that the trucks are too long for this board, and that this board looks like a fashion victim.

Xen

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Re: The Set-up Thread
« Reply #22058 on: November 13, 2019, 01:39:11 PM »

Creature/Tensors (stock)/53 Rictas/Jessup Ultra/Big Balls/Bolts - Broke it in on those curbs



Changed it up a few days later when the truck madness hit: Tensors with bones softs(holy fucking amazing)/54 SPFs

Bristol_Palin

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Re: The Set-up Thread
« Reply #22059 on: November 13, 2019, 01:50:07 PM »
I've got a backlog of cool stuff I've set up since the last time I posted here but this one is a personal favorite.

DOA 8.38 square shape
Ace 44s
Niki red 54mm 96a conicals (almost identical to SF conical full shape)
Bones swiss

Love the new DOA boards. I've been messing around with the trendy square shape decks lately so when he came out with these it was a no brainer. The only thing I don't love about this setup is that it's pretty heavy with the Aces, so I'm thinking of switching them over to mini logo 8.38s to make it a little lighter and lower.

Overall though it's a keeper, Fletch always has the best minimalist graphics and the shape is a nice change of pace from the e mold/flat as fuck DOA boards (I got another one of those too though). Also he sent me a free t shirt with this graphic which is awesome.

Are you skating an old pair of sb classics?

Sativa Lung

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Re: The Set-up Thread
« Reply #22060 on: November 13, 2019, 02:31:00 PM »
Expand Quote
I've got a backlog of cool stuff I've set up since the last time I posted here but this one is a personal favorite.

DOA 8.38 square shape
Ace 44s
Niki red 54mm 96a conicals (almost identical to SF conical full shape)
Bones swiss

Love the new DOA boards. I've been messing around with the trendy square shape decks lately so when he came out with these it was a no brainer. The only thing I don't love about this setup is that it's pretty heavy with the Aces, so I'm thinking of switching them over to mini logo 8.38s to make it a little lighter and lower.

Overall though it's a keeper, Fletch always has the best minimalist graphics and the shape is a nice change of pace from the e mold/flat as fuck DOA boards (I got another one of those too though). Also he sent me a free t shirt with this graphic which is awesome.
[close]

Are you skating an old pair of sb classics?

Yes, I swore off Nikes for ages because I just didn't really like the way they look but I grabbed these for like $10 and they've been great. Super comfy, pretty ideal level of padding, and they're nice and wide which is great for my Flintstone feet. Only real drawback is they don't have the flexibility that I prefer but I'm old and have wrecked feet/ankles so I can only do canvas vulcs so often before I need some foot pillows and these fit the bill nicely. Super durable too, took about 3 months before I even had to shoe-goo them and even then it was just in a spot where the cupsole was starting to pull away.

I've since traded them in for a pair of Converse KA-II's as my daily work shoes but I still wear them on days when my feet really hurt or I'll have to walk in the snow.

Bristol_Palin

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Re: The Set-up Thread
« Reply #22061 on: November 13, 2019, 02:56:56 PM »
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I've got a backlog of cool stuff I've set up since the last time I posted here but this one is a personal favorite.

DOA 8.38 square shape
Ace 44s
Niki red 54mm 96a conicals (almost identical to SF conical full shape)
Bones swiss

Love the new DOA boards. I've been messing around with the trendy square shape decks lately so when he came out with these it was a no brainer. The only thing I don't love about this setup is that it's pretty heavy with the Aces, so I'm thinking of switching them over to mini logo 8.38s to make it a little lighter and lower.

Overall though it's a keeper, Fletch always has the best minimalist graphics and the shape is a nice change of pace from the e mold/flat as fuck DOA boards (I got another one of those too though). Also he sent me a free t shirt with this graphic which is awesome.
[close]

Are you skating an old pair of sb classics?
[close]

Yes, I swore off Nikes for ages because I just didn't really like the way they look but I grabbed these for like $10 and they've been great. Super comfy, pretty ideal level of padding, and they're nice and wide which is great for my Flintstone feet. Only real drawback is they don't have the flexibility that I prefer but I'm old and have wrecked feet/ankles so I can only do canvas vulcs so often before I need some foot pillows and these fit the bill nicely. Super durable too, took about 3 months before I even had to shoe-goo them and even then it was just in a spot where the cupsole was starting to pull away.

I've since traded them in for a pair of Converse KA-II's as my daily work shoes but I still wear them on days when my feet really hurt or I'll have to walk in the snow.

I really liked the way they skated. I had a burgundy pair with a brown swoosh and they skated so good. I don't really recall them being super durable but I did skate them to pieces.

moonordie

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Re: The Set-up Thread
« Reply #22062 on: November 13, 2019, 03:46:17 PM »
Putting together a second setup, a little smaller one, and I have to get bearings.
Of course I want to go with good ol' Reds but I'm also considering, because of budget situation, cheaper ones(at least here) like G2 and Shake Junt OG and even Cheapshots.
Any comments about it pals?
Have a shalom day.
Sir, I'm going to politely, but firmly, ask you and your common sense to leave this establishment.

FROTHY

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Re: The Set-up Thread
« Reply #22063 on: November 13, 2019, 03:49:04 PM »
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Sorry, f4 thread, not wheels.

Expand Quote
A wheel like that in 99 f4 would obviously be grippier than classics. That fact about friction does not work with skate wheels. We are grinding the wheels down, wider contact patch means more material to wear down, which means more grip.
[close]
[close]

That does not count as backing your claims. You are just asserting that the surface area does affect the grip.
[close]
Oh shit, I missed that. No I didn't back them up, but I still stand by it. More material to wear down equals more resistance equals more grip.
[close]

And since you don't back your claims up, we can just continue to ignore them.
[close]

Engineer here with a background in physics, applied science and applied maths. I've done the maths, was a while back but did it nonetheless.

More area = more grip as the coefficient of the material has an exponential curve based on force (aka rebound).

Breaking into a slide will be more difficult but maintaining said slide will be easier. Vice versa on the smaller surface wheels.

That being said, we are working with very small margins when comparing same compounds. Biggest difference you could make is based on weight and the angles/force you approach the slide. Also wider wheels will be more controllable as it would want to normalize quicker, and smaller wheels will be more difficult to normalize.

I know this is difficult to understand, cant argue the theoretical science, but there is a big difference in theoretical science and applied (assumptions/fixed variables).
[close]

So what you are saying is that the coefficient of friction is not constant with skateboard wheels but increases exponentially with increasing force? Or increasing force per unit of area? But the force stays the same. Force per unit of area decreases with increasing area. Are we talking about deformation of the wheel material under applied force here? If skateboard wheels were to deform enough under force to make a difference, wouldn't a narrower contact patch then provide more grip due to it deforming more as the force per unit of area is greater with a narrower contact patch?

Can you provide some more info on what you're saying as it's the first time I've heard of such and didn't really understand what exactly you were trying to say?

I'm not an expert, but I've read a bunch about contact patch vs friction on racing tires and what I can see is that dynamic friction for objects that deform is a complicated science and there are deviations from the normal models of friction, especially when you look at the shape of the object and how energy and vibrations dissipate. Also transferring energy among something with rolling inertia plays a roll (pun!). I'm not saying the opposite of what you are saying is true, it's just a murky area until we start stacking up peer reviewed studies on powerslides because of all of the variables in real world situations.

Sativa Lung

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Re: The Set-up Thread
« Reply #22064 on: November 13, 2019, 04:07:39 PM »
Putting together a second setup, a little smaller one, and I have to get bearings.
Of course I want to go with good ol' Reds but I'm also considering, because of budget situation, cheaper ones(at least here) like G2 and Shake Junt OG and even Cheapshots.
Any comments about it pals?
Have a shalom day.

Flip HKD 7 are the best cheap bearings I've ever used, hands down. They're pretty fast once they break in (they start off about on par with reds but get faster over time), have good shields if you're riding in shitty conditions, and all the ones I've had have been crazy durable. Actually I've never had one shit out on me. I was randomly bullshitting with the guy who owns my local shop one day and found out he's an adherent of them as well.

SW has them for $10 too.

moonordie

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Re: The Set-up Thread
« Reply #22065 on: November 13, 2019, 04:12:30 PM »
Expand Quote
Putting together a second setup, a little smaller one, and I have to get bearings.
Of course I want to go with good ol' Reds but I'm also considering, because of budget situation, cheaper ones(at least here) like G2 and Shake Junt OG and even Cheapshots.
Any comments about it pals?
Have a shalom day.
[close]

Flip HKD 7 are the best cheap bearings I've ever used, hands down. They're pretty fast once they break in (they start off about on par with reds but get faster over time), have good shields if you're riding in shitty conditions, and all the ones I've had have been crazy durable. Actually I've never had one shit out on me. I was randomly bullshitting with the guy who owns my local shop one day and found out he's an adherent of them as well.

SW has them for $10 too.
Couldn't agree more but the ones I mentioned are the ones that my new "local" skateshop has. Now I'm living in a tiny town with no skateshop at all
Sir, I'm going to politely, but firmly, ask you and your common sense to leave this establishment.

144p

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Re: The Set-up Thread
« Reply #22066 on: November 13, 2019, 04:23:09 PM »
reds and g2 should be about the same price, just get reds.

sneakpeekmeek

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Re: The Set-up Thread
« Reply #22067 on: November 13, 2019, 04:53:42 PM »
Putting together a second setup, a little smaller one, and I have to get bearings.
Of course I want to go with good ol' Reds but I'm also considering, because of budget situation, cheaper ones(at least here) like G2 and Shake Junt OG and even Cheapshots.
Any comments about it pals?
Have a shalom day.

Shake Junt OG's are a pretty solid choice. Never had any shields pop off or broken crowns skating them. Can't say the same about Reds. The crowns in the cheapshots are horrible.

Sativa Lung

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Re: The Set-up Thread
« Reply #22068 on: November 13, 2019, 05:18:56 PM »
Expand Quote
Expand Quote
Putting together a second setup, a little smaller one, and I have to get bearings.
Of course I want to go with good ol' Reds but I'm also considering, because of budget situation, cheaper ones(at least here) like G2 and Shake Junt OG and even Cheapshots.
Any comments about it pals?
Have a shalom day.
[close]

Flip HKD 7 are the best cheap bearings I've ever used, hands down. They're pretty fast once they break in (they start off about on par with reds but get faster over time), have good shields if you're riding in shitty conditions, and all the ones I've had have been crazy durable. Actually I've never had one shit out on me. I was randomly bullshitting with the guy who owns my local shop one day and found out he's an adherent of them as well.

SW has them for $10 too.
[close]
Couldn't agree more but the ones I mentioned are the ones that my new "local" skateshop has. Now I'm living in a tiny town with no skateshop at all

I'd hook you up but the last set I had from the tactics sale went to a SLAP pal a few weeks ago. If whatever you get ends up being shit hit me up in a month or two, I'll probably buy out SW's supply when I get my christmas bonus.

Until then, if you can't order them online and they dont have ML I'd probably go with the cheapshots or reds. I can't comment on G2 as I've never tried them but the Bronsons I have tried are fast out of the gate but have durability issues and shake junt are pretty garbage except the triple OGs, and even those aren't great but more what I would classify as "acceptable".

jay_nev

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Re: The Set-up Thread
« Reply #22069 on: November 13, 2019, 05:34:17 PM »
Why would/can flip be making better “cheaper” bearings than anyone else? Just curious

rocklobster

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Re: The Set-up Thread
« Reply #22070 on: November 13, 2019, 05:38:01 PM »
If you can spend a little a more you can consider the Reds Big Balls:

https://www.tactics.com/bones-bearings/big-balls-reds-skateboard-bearings

Heard lots of good things about them from my regular shop. Cheaper and faster than Bronson bearings.
Venture Truck Height:

5.0 & 5.2 LO
STANDARD - 1.88” - 47.75mm
FORGED - 1.85”- 46.99mm

5.0 ,5.2, 5.6, 5.8 & 6.1 HI
STANDARD - 2.09” - 53.09mm
FORGED - 2.04” - 51.82m

yourbreakfsat

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Re: The Set-up Thread
« Reply #22071 on: November 13, 2019, 09:59:49 PM »
Bronson G2s are like Reds, but each bearing has two rubber shields on both sides. This means there's a chance you'll install the bearing backwards, with the rubber seal and retainer facing out. It's a higher chance of both of those parts breaking. Obviously you can take off the rubber shields to figure out which is the front, but:
1) that takes a while
2) you now have 8 extra rubber shields for no reason.

The benefit of buying G2s is that they come with a set of spacers, but your local will definitely have a whole bag of those, and they'll give you a set if you ask. I'd rather spend the extra $1 difference ($17.95 vs $18.95) for Reds.

Also in my personal experience, my Reds have lasted longer than Bronson G2s. Big Balls are a great upgrade, and Super Reds (and bearings above it) are only worth it if you do bearing maintenance.

Roisto

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Re: The Set-up Thread
« Reply #22072 on: November 13, 2019, 11:44:35 PM »
Expand Quote
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Expand Quote
Sorry, f4 thread, not wheels.

Expand Quote
A wheel like that in 99 f4 would obviously be grippier than classics. That fact about friction does not work with skate wheels. We are grinding the wheels down, wider contact patch means more material to wear down, which means more grip.
[close]
[close]

That does not count as backing your claims. You are just asserting that the surface area does affect the grip.
[close]
Oh shit, I missed that. No I didn't back them up, but I still stand by it. More material to wear down equals more resistance equals more grip.
[close]

And since you don't back your claims up, we can just continue to ignore them.
[close]

Engineer here with a background in physics, applied science and applied maths. I've done the maths, was a while back but did it nonetheless.

More area = more grip as the coefficient of the material has an exponential curve based on force (aka rebound).

Breaking into a slide will be more difficult but maintaining said slide will be easier. Vice versa on the smaller surface wheels.

That being said, we are working with very small margins when comparing same compounds. Biggest difference you could make is based on weight and the angles/force you approach the slide. Also wider wheels will be more controllable as it would want to normalize quicker, and smaller wheels will be more difficult to normalize.

I know this is difficult to understand, cant argue the theoretical science, but there is a big difference in theoretical science and applied (assumptions/fixed variables).
[close]

So what you are saying is that the coefficient of friction is not constant with skateboard wheels but increases exponentially with increasing force? Or increasing force per unit of area? But the force stays the same. Force per unit of area decreases with increasing area. Are we talking about deformation of the wheel material under applied force here? If skateboard wheels were to deform enough under force to make a difference, wouldn't a narrower contact patch then provide more grip due to it deforming more as the force per unit of area is greater with a narrower contact patch?

Can you provide some more info on what you're saying as it's the first time I've heard of such and didn't really understand what exactly you were trying to say?
[close]

I'm not an expert, but I've read a bunch about contact patch vs friction on racing tires and what I can see is that dynamic friction for objects that deform is a complicated science and there are deviations from the normal models of friction, especially when you look at the shape of the object and how energy and vibrations dissipate. Also transferring energy among something with rolling inertia plays a roll (pun!). I'm not saying the opposite of what you are saying is true, it's just a murky area until we start stacking up peer reviewed studies on powerslides because of all of the variables in real world situations.

Friction with deforming materials sure isn’t as straight forward as friction with essentially non deforming materials. Car tires are far softer than skateboard wheels though and have 10+ times as much force weighing down on them and are filled with air. They’re pretty much engineered to deform to increase grip. I don’t think the deforming argument really applies to skateboard wheels. Even with car tires it’s not apparently all that straight forward that wider tires will increase grip. I’m no expert on that but I think the width is more related to tire durability, that it doesn’t rip apart so easily with the forces it has to withstand.

MalHuis

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Re: The Set-up Thread
« Reply #22073 on: November 14, 2019, 12:53:07 AM »
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Sorry, f4 thread, not wheels.

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A wheel like that in 99 f4 would obviously be grippier than classics. That fact about friction does not work with skate wheels. We are grinding the wheels down, wider contact patch means more material to wear down, which means more grip.
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That does not count as backing your claims. You are just asserting that the surface area does affect the grip.
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Oh shit, I missed that. No I didn't back them up, but I still stand by it. More material to wear down equals more resistance equals more grip.
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And since you don't back your claims up, we can just continue to ignore them.
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Engineer here with a background in physics, applied science and applied maths. I've done the maths, was a while back but did it nonetheless.

More area = more grip as the coefficient of the material has an exponential curve based on force (aka rebound).

Breaking into a slide will be more difficult but maintaining said slide will be easier. Vice versa on the smaller surface wheels.

That being said, we are working with very small margins when comparing same compounds. Biggest difference you could make is based on weight and the angles/force you approach the slide. Also wider wheels will be more controllable as it would want to normalize quicker, and smaller wheels will be more difficult to normalize.

I know this is difficult to understand, cant argue the theoretical science, but there is a big difference in theoretical science and applied (assumptions/fixed variables).
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So what you are saying is that the coefficient of friction is not constant with skateboard wheels but increases exponentially with increasing force? Or increasing force per unit of area? But the force stays the same. Force per unit of area decreases with increasing area. Are we talking about deformation of the wheel material under applied force here? If skateboard wheels were to deform enough under force to make a difference, wouldn't a narrower contact patch then provide more grip due to it deforming more as the force per unit of area is greater with a narrower contact patch?

Can you provide some more info on what you're saying as it's the first time I've heard of such and didn't really understand what exactly you were trying to say?
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I'm not an expert, but I've read a bunch about contact patch vs friction on racing tires and what I can see is that dynamic friction for objects that deform is a complicated science and there are deviations from the normal models of friction, especially when you look at the shape of the object and how energy and vibrations dissipate. Also transferring energy among something with rolling inertia plays a roll (pun!). I'm not saying the opposite of what you are saying is true, it's just a murky area until we start stacking up peer reviewed studies on powerslides because of all of the variables in real world situations.
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Friction with deforming materials sure isn’t as straight forward as friction with essentially non deforming materials. Car tires are far softer than skateboard wheels though and have 10+ times as much force weighing down on them and are filled with air. They’re pretty much engineered to deform to increase grip. I don’t think the deforming argument really applies to skateboard wheels. Even with car tires it’s not apparently all that straight forward that wider tires will increase grip. I’m no expert on that but I think the width is more related to tire durability, that it doesn’t rip apart so easily with the forces it has to withstand.

Haha. Sorry but this is very difficult to explain, hence the theoretical vs applied science. I also work for a living now and dont really dive into these things so much anymore.

Theoretically the the friction coefficient is linear and keeping force (weight) the same the contact area will have no effect.
In practicality, the friction coefficient is not (or rather the equation), there are other forces at work aka wind/drag, magnetic forces between the materials (wheels and surface) as well as the digging into the surfice (small wheels will dig more into the surfice), even deformation due to these forces on the wheel. Now all of a sudden this simple equation of frictional force become a new beast and the wheel shape/size plays a bigger role. You can argue each force individually but in the end bigger = more friction.

This is why F1 racing cars have bigger conical fulls and not biscuit wheels, deformation, drag, digging into materials actually makes a big difference on total friction. More so on racing than skateboarding wheels but the same principle applies.

The human body is crazy though, you can feel the difference. I have F4 classics 53s and lock in 55s. The 55s slide way nicer but with more effort than the classics.


beatifk

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Re: The Set-up Thread
« Reply #22074 on: November 14, 2019, 02:03:13 AM »


Strangelove
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F4

I bought this deck after a long morning of drinking and smoking because I thought the graphic was hilarious and the shape was interesting and I've wanted to try a Strangelove deck for a while. Now after skating it, I realize just how very "interesting" the shape actually is. I don't love it. The tail is really short and stumpy and the nose is long and kinda pointy/eggy. I can barely do a solid ollie on this setup but for some reason I can do heelflips perfect and high every try, a trick I usually struggle with. It's aight I guess.

Sativa Lung

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Re: The Set-up Thread
« Reply #22075 on: November 14, 2019, 03:52:08 AM »
Why would/can flip be making better “cheaper” bearings than anyone else? Just curious

When it comes to cheap Chinese bearings there's a massive variation in quality, sometimes even within the same factory. There's hundreds of manufacturers over there  and some brands seem to concentrate on their margins more than the quality of the product. Flip seems to have found a manufacturer that makes consistently high quality bearings.

Some people think that the little manifesto cock-rockin Ron wrote a few years back is the gospel and all Chinese bearings are inferior but that hasn't been my experience at all. I even shelled out a good bit of cash to get ahold of sets of FAG and GMN german-made bearings to see if what he claims is true and was pretty disappointed by the result. They're both metal cage and probably really durable but even after breaking them in and cleaning the Grease out they're not as fast as cheap Chinese ones that have nylon or delrin retainers.

So the short answer is that cheap Chinese bearings are kind of a crap shoot, but Flip 7 are at the top of the pile in my experience.

AngryBlackMan

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Re: The Set-up Thread
« Reply #22076 on: November 14, 2019, 04:32:21 AM »

Kinda stoked on this graphic.
Enjoi/New deal impact light 8.5
Venture 6.1 w/bones hard bushings
Spitfire F4 Conical Full 53mm 99a
Modus blue bearings
Modus hardware
Mob M80

hangontoyourego

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Re: The Set-up Thread
« Reply #22077 on: November 14, 2019, 06:05:21 AM »

Kinda stoked on this graphic.
Enjoi/New deal impact light 8.5
Venture 6.1 w/bones hard bushings
Spitfire F4 Conical Full 53mm 99a
Modus blue bearings
Modus hardware
Mob M80
Bro ! Is that a S. Pellegrino sticker ?
I just broke in my 6.1 ventures thy are perfect .
You don’t like the stock bushings ? I haven’t skated an enjoy deck on 15 years . That’s sick you got the new deal graphic .
« Last Edit: November 14, 2019, 06:22:13 AM by hangontoyourego »

moonordie

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Re: The Set-up Thread
« Reply #22078 on: November 14, 2019, 08:02:17 AM »
8.5 and Caswell together? Love it!
Btw how true it is that Shake Junt Are made in the us?
« Last Edit: November 14, 2019, 08:05:49 AM by moonordie »
Sir, I'm going to politely, but firmly, ask you and your common sense to leave this establishment.

baggy spandex

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Re: The Set-up Thread
« Reply #22079 on: November 14, 2019, 10:28:34 AM »



Girl Mike Carroll
PSSTIX OG mold/shape 1998
7.5x31.5 14inwb
Jessup
Bronze Allen key
Venture 5.25 low lite
Boardycakes 44mm wheels
Bones Bigballs

Somehow it didn't register with me that this is PS Stix until watching that Griffin Gass clip Crail just posted. That's fucking rad.