Bennet Kingpin bite

thomas · Bennet Kingpin bite

I use my LDP board (Subsonic Pulse) mostly as a city surfing go-to board in Amsterdam. Therefor, I often have drop off sidewalks etc. Often, my board stalls on the edge, because the kingpin of my Bennet 5.0 fronttruck (15 deg. wedge) catches the edge of the sidewalk. Any tips on how to deal with this?

jat.

Galac has the answer!

angelo_pb · Grind King king pins

Foregive me if this is a patently stupid question. Are the sizes of kingpins standardized or will grind king king pins work on a bennett 6.0?

http://www.grindking.com/catalog/product_info.php?products_id=115

Alec

They will be too short, unless you can get hold of some of the 80's longer GrindKings.

thomas

That's too bad, cause the head of those grindking king pin looks like it would save the day.

Anyway, I should look for a 2.5 inch long, grade 8 bolt. What's the right diameter?

angelo_pb

Thanks. Any other aftermarket KPs recommended for the Bennetts?

pavedwave

Alec

thomas

Thanks!

angelo_pb

I orderd grade 8 Randal KPs. Mine came in a set of 2. They are 2.5" and fit the 6.0. But it required a washer to space it 1 mm or so the bolt would not hang too long toward the pavement. The edges of the washer had to be grinded away so it would fit inside that little area.

I have gotten minor KP bite when crossing over the storm gutters in the street. Careful. Nothing serious enough to stop the board. I like these KPs because there is very little threading to chew up the bushings.
But I wish grind king would make a 2.5".

I think those OEM Bennet cupped washers are a good idea to use by the bolt because when they grind, its not such a big deal.

On a tangent, do you guys have problems with the bolt loosening while riding. It seems like mine is losing a 1/4 turn every 6 miles are so.

scooterdad

Angelo, I see you posted this a while ago, but I have been getting major kingpin nut loosening to the point of almost falling off. His happens after 10 miles or so. I tried switching to a new nut as the old(one month) one I had seemed to have lost most of the plastic type lock. I had been taking it off often to check/play around with different bushong combos.

So I replaced the nut and same thing. I just checked 15 miles into the ride today because it felt a little loose. It was just a turn or so from falling completey off! The plastic lock still looked in decent shape. So, I don't know if it is terrain or riding style. My two riding buddies had no issues when I asked them to check. We did go over a couple slightly grooved concrete bridges that coils loosen fillings but I don't know why it would only affect me. It worries me a little because it wouldn't be fun having that pop off at speed would it?

pavedwave

Is that with a stock kingpin or a replaced one? Only thing I can imagine other than crummy nylock, is if it was a replacement pin that is slowly turning a little in the baseplate. Have you tried flipping the nut over and screwing it down with the flat side up? I've done that when the nylock was almost gone and it helped extend the life of the nut. But I haven't run into this problem for a long time.

Other than that, the only long-term solution I'd say would be to file grooves in the very end threads of that kingpin, and try to find a big C-clip to snap around it.

scooterdad

It happened with the stock kingpin and now with the Randal (per Barry's excellent photographic tutorial). I doubt the replacement pin is turning in the baseplate with the locktite and the degree of difficulty for me getting it wedged in there, but I guess that is possible.

One thing I did notice is that with the Randal that I cut down slightly, it bit into some of the plastic on the nut the first time I put it on. Since then, I gently filed down the top of the kinpin slightly so it isn't as sharp, so I will try again with a brand new nylock. It could just be a combination of several things. I did check my new bushings after 20 miles today(longest ride after the kingpin replacement), and they look pristine. I am very happy so far with the kingpin mod.

Belegnole

locktite thread locker...maybe the medium

scooterdad

I used that in the baseplate securing the bolt, but you're saying put it on the locknut as well? Will that make it hard to remove to change/adjust bushings?

Belegnole

well there are quite a few variants from loctite. Twenty eight just for thread locking. I was thinking that if your nuts keep wanting to fall off. you should see a doctor. Short of that loctite can reduce the loosening or stop the removal all together. One that stuck out was ...

timbo666

Bennet Kingpin bite

Grind King king pins