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So I bought a pair of 139 mids and it seemed like the kingpin nut wasn't staying tightened, seemed like my one truck would loosen by itself (even after tightening it down enough so that it wouldn't normally loosen by itself). Basically, I would see the kingpin nut at one position during the sesh, then look down at it, say, half an hour later, and it seemed to be in a totally different position, which bugged me out.
I chalked it up to a defective pair (?), and decided to try another pair- this time, 149 mids:
On this pair, to make sure nothing was just in my head, I marked a line in sharpie at "12 o' clock" on the kingpin nut after tightening the trucks enough to make sure the kingpin wouldn't (normally) loosen by itself . Sure enough, by the end of the second session with the 149s, the line I marked was now at around "8 o' clock". I did not touch the kingpin nut with a tool throughout the entire session. The weird thing is, I'm not even sure if my truck feels any tighter/looser on the 149 with the kingpin nut rotating by itself.
Is this somehow normal? Or did I just get really unlucky with two consecutive defective pairs?
Yeah i have this problem w one of my indy mid trucks. IT sucks so bad and random that a kingpin cant / wont stay on the set tightness. I remember trying inverted kingpins way back in grind kings and they sucked and to be honest these too. Inverted kingpin is a joke. Dont waste your money on this shit.
Thanks for the advice. I was going to get a pair out of curiosity but not this time. I will stay with my AF1s, they been working perfectly for me.
You have to try it out for yourself, illl never go back to regular kingpins. I laugh watching my friends try smith/feebles and scrape/ hang up on their kingpins.
I don’t understand why every truck company doesn’t utilize inverted kingpins. this isn’t some kind of gimmick like a bottle opener or axle rethreaders, it’s actually just a better design, plain and simple. Work smarter not harder, having to grind down your kingpin to break in trucks is ridiculous.
So many trucks these days have kingpins that will scape on the very first grind. It baffles me. Just get that kingpin out of the way!
I have hollow krux dlks in my Indy mids and I want to ride this setup for the rest of my life.
I went through 5 pairs of ace 44 classics before I got fed up with their excessively long kingpins (which always come loose btw).
The only minor downside is that I do have to retighten my back truck every few seshes. but this is not an issue, I keep an Allen key in my backpack, and just give it a quick turn before I start my sesh. It literally takes less than five seconds.
I’ll never go back to regular kingpins, anyone who isn’t on inverted kingpins is living in the past, making every grind and truck stall harder than it needs to be.
I will say the Indy dlk sucks though, and so does the new krux one. The hollow krux kingpin is bomb, I also want to try grindking and creepers tho.