Conversion Kit question

[chrisblessing]

At the risk of double posting, (in the conversions category) I wonder if anyone might have the actual thread size, pitch and length of the allen-head bolt used to secure the conversion kit chainstay to the fork adapter.

Many thanks.

 

[trapdoor2]

I'll have to check when I get home this evening. My brain sez it is probably M6 with a length of ~12-15mm...but I wouldn't go trusting my elderly old brain.

 

[chrisblessing]

Thanks @trapdoor2. I ask because the bike is quite far away (Thailand) at the moment while I'm in Malaysia. I found and installed a 135mm front fork and did away with the adapters. When the Thai machinist fitted the chainstay to the tabs I had brazed on, he used a different hex bolt and misplaced the originals. I'll be in the US this summer and will try to find something closer to the originals.

 

[trapdoor2]

Ok, I've pulled one out and measured it, bigger than I guessed. It is M8 X 20 'coarse'. Which means it is 8mm in diameter with a thread pitch of 1.25mm. Grip length is 20mm.

Hopefully, this is the bolt you need. I included a picture just in case.

 

[chrisblessing]

@trapdoor2, you're a genius. Thanks for much for this. I've posted a photo of the new fork and adapter. I still have some grinding, filing and final powder coat to finish up.