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Re: TanTan FM10 29/27.5+
Quote from: skelt on August 17, 2020, 12:26:26 PM
Hi! I just found this site.

Yeah i'm having some teething problems with the frame.  Like one of the posts above my front bolt for the rear shock also snapped! Doesn't fill you with confidence that the carbon itself is solid, but it appears to be....i hope.

I've ordered a titanium m10x80 bolt and nut, 3mm spacers, a rubber o-ring and washer from ebay.  Also ordered 10x50 mounting kit from: https://www.tftuned.com/tf-tuned-mount-kit-127mm-m10/p2938

I also had to hand make a aluminium adapter and drill the holes in the correct location to stop the frame rubbing.

Fingers crossed that'll be it!

Edit: i ordered the frame on the 5th of march 2020

Welcome, glad to hear from you.  Your fix seems to be a pretty good workaround.   Sucks that we have to modify things ourselves to get some added reliability, but small price in the grand scheme of things...  The carbon itself appears to be pretty stout.

I currently have two fixes for the broken shock bolt:

#1, more of a preventitive measure, keeps the existing stock bolt in place.  Instead of using spacers, I ordered a length of 1/2" OD .049 wall stainless tube for ten bucks on ebay.  The inner diameter is a perfect fit to the 10mm shaft.  I cut a section of tube to 54mm in length.  Since the hardware now spans nearly the entire width from bearing to bearing, the bolt should be much less prone to breaking at the thinner center section.  The shear strength is on the 10mm section of the bolt, not the center 8mm section.  Youll need to use the trunnion mount inner washers on either side of the tube.

#2 is similar to the fix mentioned earlier, and will help while you're waiting for replacement parts to arrive, assuming youve already broken the bolt.  I'm using off the shelf 54x8mm mounting hardware, 8mm ID 2mm thick spacers, 8mm x 70mm sex bolt (or 5/16" x 3" bolt cut to length).  And use drilled out alloy chainring bolts to fit the 8mm bolt in the 10mm inner bearing race. 

I'm still using the second option while I wait for the warranty replacement bolts, then I'll move to option 1 purely for aesthetics.  I think both options are considerably stronger than the factory bolt, and neither is particularly expensive.
August 17, 2020, 01:52:06 PM 		1
Re: TanTan FM10 29/27.5+ Hi, using that hardware, which bolt will you use?

Can you share a picture of exactly how it's setup?

TanTan promised to send a steel bolt once it's manufactured, but I don't fancy waiting for them to sort that out.
September 02, 2020, 01:20:07 PM 		1