Myriad of small problems with TanTan FM10

[emu26]

Are you using genuine Shimano adaptor?  It comes with the cup washers which you should be using when you install an adapter.  https://www.mtbdirect.com.au/shimano-post-frame-or-fork-to-post-caliper-brake-mount?brake-mount-size%09=117&option=340&gclid=EAIaIQobChMIw8H-r_nH7wIVPTVyCh0O5QApEAQYAiABEgIRzfD_BwE I'm using 160mm on the back without issue so far.

Re your seat post, is that photo looking up from the bb or down from the top?  I am using the 150mm post I linked and haven't had issues with it. Top of supplied seat clamp to saddle rails is 90mm when collapsed and 240mm when extended measuring along the line of the post. Will that work for you or not?  The collar of the post sits off the seat clamp but I don't remember if I could get it lower or if that was just where it worked for me, pretty sure I could get it lower but I can check for you if what I have measured sits too high for you.

[slickrock22]

Are you using genuine Shimano adaptor?  It comes with the cup washers which you should be using when you install an adapter.  https://www.mtbdirect.com.au/shimano-post-frame-or-fork-to-post-caliper-brake-mount?brake-mount-size%09=117&option=340&gclid=EAIaIQobChMIw8H-r_nH7wIVPTVyCh0O5QApEAQYAiABEgIRzfD_BwE I'm using 160mm on the back without issue so far.

Re your seat post, is that photo looking up from the bb or down from the top?  I am using the 150mm post I linked and haven't had issues with it. Top of supplied seat clamp to saddle rails is 90mm when collapsed and 240mm when extended measuring along the line of the post. Will that work for you or not?  The collar of the post sits off the seat clamp but I don't remember if I could get it lower or if that was just where it worked for me, pretty sure I could get it lower but I can check for you if what I have measured sits too high for you.

Thanks for the response!

Yes.  Using that exact adapter with both cup washers.  I would assume that if you use the standard bolt from a 160 caliper mount or a 180 adapter that the holy length would be the same.  I ended up using a dremel with a cutting wheel and removing 1/8-1/4" from the end of each bolt and then successfully installing.  Don't love it but I think it will work.  I think some of the threads at the bottom of the insert may have been dirty or some other problem which restricted full required depth.

The photo is looking up from the bottom towards the seat clamp.  I bent the camera up 180 degrees, inserted from the top at the clamp and pushed down.

Mine is 250mm from clamp top to rails so about the same.  The bottom of the collar sit 50mm above the clamp and is far as it will insert.  If you measure the length of inserted seat post it is 160mm, which is where the tube obstruction is.  Full insertion to the post collar would be 210mm.  Lisa @ tantan said not to sand the ridge as that is where the two tubes are joined.  I am approx 20mm high form center of bottom bracket to top of saddle.  I am running 5mm shorter crane (170mm) so I am hopeful that I will just make it.  I would like to share with someone in my family that is shorter than me and why I am trying to figure it out.  Maybe I will need to switch to a 100mm or 125mm dropper to share.

[slickrock22]

Done.  Took a maiden ride in my backyard and still have some kinks to work out.

Outstanding issues are chainline needs to be fixed, cable rattling because the rubber grommets are not sized properly, 150mm dropper wont work unless your inseam is 33/34" because of a blockage that keeps the dropper from fully inserting into frame

[ChinerDetroit]

slickrock22, what is the max width 29" tire you think you could fit in that FM10?

[d3sertcr4wlr]

Hi Slickrock, what did ya end up doing with the dpx2 mounting hardware to get it to fit? Did ya end up finding a shorter 125mm dropper post to fit the frame?