240 tire kit fail

[onelogue]

After the video i got the wheel of and found out that i had 3 bolts broken.

I've called Grand Stand Designs (who built the kit) to try and order new bolts and they have yet to get a call back.

 

[50dro]

Bummer man!

Are the bolts the only thing tying the sprocket to the spacer to the wheel? In other words, is all the torque transmitted through the bolts? If so, I'm not all that surprised that they would shear for the same reason you shouldn't put wheel spacers and long studs on a car. It would be better if the sprocket was bolted to the spacer (or machined as one piece) then to the wheel. Are the bolts stainless? Good luck man!

PS - You might want some cleaner sliders for that beautiful bike! I know where you can get some...Just sayin'

 

[06xbss]

Wonder if that was a result of not having a crush drive plus the torque of our bikes.

 

[onelogue]

haha thanks Sandro. Sliders are off my old bike that was hit so they are kinda sentimental
I think the bolts are aluminum cause they are pretty soft. (ill ask GrandStandDesigns). Something else caused the fail and im pretty sure it had to do with weak threads in the wheel. I bought the wheel off ebay before it was converted to the 240 so previous owner could have messed up the threads.. The bolts broke off in the wheel in a very weird spot.

Right now i have to take the best approach to get the bolts out. What ever that may be.

 

[onelogue]

Wonder if that was a result of not having a crush drive plus the torque of our bikes.

Crush drive?
Right now im just focused on getting the damn bolts out of my wheel. There are 3.

 

[06xbss]

Bikes with factory chains have the rear sprocket attached to hub with large rubber bumpers that then slot into the wheel. That way there is some give when you accelerate, kinda like the factory belt on our bikes.

If the bolts are soft, then a lot of penetrating oil, little heat and an easy out should get them out.

 

[Renegade]

You can buy the bolt out kits (extractor/easy out kits) from lowes/home depot/sears. You drill a hole in the center of the broken bolt, then put the extractor bit in your drill and it's got a pattern on the bit that when you run the bit in reverse, it digs into the hole you drilled in the bolt. It's effective and I've used it multiple times on many different bikes.

 

[Renegade]

This is one of the kits that I have...you can buy kits that include the correct sized drill bit too for drilling your pilot hole...
http://www.lowes.com/pd_232656-1083...1&currentURL=?Ntt=screw+extractors&facetInfo=

 

[Renegade]

Home depot kit including drill bits...

http://www.homedepot.com/p/Kawasaki-10-Piece-Screw-Extractor-and-Drill-Bit-Set-840979/203123585

 

[Renegade]

Sears kit including drill bits...

http://www.sears.com/craftsman-10-p...p-00966196000P?prdNo=1&blockNo=1&blockType=G1

 

[Renegade]

If push comes to shove, you can always drill the broken studs out, and use a Tap and Die and make completely new threads to the size of your liking...

 

[pagedownhere]

Dude, this is what just happened to me a few weeks ago! All six of mine sheared at once. only had a few thousand miles or so on the kit. I was pissed! Had to flag down a landscaper w/ a trailer and get it towed home. Got the wheel off and the shop is pulling the end of the bolts out now. I'll keep you updated. But I contacted Fat300 to let them know and they told me we should be using Grade 5 or Grade 8 Bolts instead of the Stainless Steel bolts they give us with the kit. I'll let you know what bolts we find that work. I've never heard of this with any other sport bikes in all my years of riding jap bikes, but apparently it's not as rare w/ Harley guys that put some pretty good hp to the rear wheel. Still seems like BS to me man. Keep us updated and I'll do the same. Here are pics of when I pulled mine off. Oh and I used the new 2010 wheel that came as a 240 so it was not your wheel that failed, it's the bolts they gave us.

 

[pagedownhere]

 

[thrstrmech]

If push comes to shove, you can always drill the broken studs out, and use a Tap and Die and make completely new threads to the size of your liking...

^yes, but as another option use a timesert instead

 

[thrstrmech]

can also countersink the holes on the sprocket and use countersunk screws for clearance, then go a step further and attach the spacer to the sprocket in the same manner by drilling holes between the mounting holes and countersink those as well to make it one piece

 

[thuren67]

Use red loctite. They should come out. I had to pull 3 bolts out of my buddy's Dyna after the sprocket came loose and did thr same thing Do not force a easy out. It the wheel isn't fucked up and you are not super handy and patient take it to a machine shop to get removed

 

[onelogue]

Thank you everyone for the thorough replies with details. Im going to reverse the bolts out and most likely helicoil the 3 holes so that I have good threads to work with again.

pagedownhere.: thank you for the pictures. Wow what a tough situation you have there. Im hoping i can find better bolts myself. It doesnt make sense that both companies that did our kits would give us bolts that are not the strongest.

Keep me posted on how you solve your problem and ill update this post as i fix it.

 

[twoguns]

mate... same thing has already happened to me. noticed that two had worked loose and one enough to start on the swingarm, but caught it in time, and gave them all a tighten. will be shortly using a bit of locktite too.

and i might check it all a bit more after reading this....

 

[EricZ]

Are those stainless bolts?

 

[pagedownhere]

when I contacted them and asked they said that's what the kit came with because they look better....

Yes sir we use Stainless Steel It looks way better but not as strong as also

[confused]