Does anyone know what is the thread size on the rear bottom bolt of the triangle.. When I unscrewed and tried rescrewing it back, it is getting stuck..
I igured out it is a m12, but not sure if it is 1.75 / 1.5 or 1.25.. trying to use a thread tap to see if I can get the screw back on..

The dropper seems fine, but that fork is probably too short for a 27.5 831 build.

I’m thinking about experimenting with a mixed-wheel build for the bigger tire clearance (and maybe the handling) when I get an 831 frame, and even with the 29in front wheel I don’t think I’d be happy with less than a 170 fork. Ground clearance will probably be a big issue with even a mixed wheel build but definitely a 27.5 only, and the longest travel version of the Z2 available there is 150mm, which is under-forking compared to the 160 recommended. That’s gonna be really low.

Thank you, so any suggestions on the fork then ? Trying to keep it below $650.. Closest I found was this - https://www.backcountry.com/fox-racing-shox-36-float-27.5-160-performance-boost-fork-2021 ..  Dont have a lot of reviews on this thus was wondering..

Hi, I am also building a bike with 27.5 wheels.. can you please let me know what was the offset for the fork ?

The roller bearing kit only fits the damper body, with a few exceptions that don't fit this frame, so don't buy that. Contrary to the Haideli site, the 30mm is actually at the front (frame connection) and the 22.86 at the rear (linkage).

Thanks, I will get the regular ones then.. cheers

-J

Here is my build..First bike build ever... easier after i got all the parts / tools, but still took much longer than expected ( Fork and dropper post took 5 months to come due to backorder ). Just need to reduce size of cables / cut steerer tube )and having some issues with the derailleur goes to 11-12 gears..

10.5 kg.. total weight, cost about $4K

I am just compiling the parts list.. will post the link. Thanks for all the folks who helped.. several of you went over and above to help me put the bike together..

Thanks.. It looks like the fork is setup for 180, so 1 is required..

Cheers,
J

No... Its all good for 160mm... For 180 you need pm to pm adapter.  The pic is is to pm.

But no...no adapter needed for 160.
But I would use 180mm if haevier than 75kg

You are right. I have 180mm rotors, i thought I had bought 160mm,  So do I need to buy pm adapters for front and back ?

So something like this - 2 of them - ? https://www.amazon.com/Zeno-Rotor-Adaptor-Mount-Caliper/dp/B07YC2VPNM/ref=sr_1_2?crid=3G31FV7B1ICGX&dchild=1&keywords=180mm%2Badapter%2Bpm&qid=1613856670&sprefix=180mm%2Bpm%2Caps%2C128&sr=8-2&th=1

I hope to receive my medium FM936 with BSA BB within a few weeks so the parts party can begin! As a cheap dutchie, I'll be sourcing ' like new'  parts mostly. It will be my do it all bike, so a comprimise between reliability, costs and weight.

What I already have:
Syncros Revelstoke wheelset, like new. Bit on the heavy side (1850gr) but 30mm internal width rims
Fox Performance rear shock EVOL 165-42.5 from Fleabay (from an Anthem X Pro)

What I am still looking for, with some questions:
Dropper, what stroke is possible in a Medium frame? I'll probably go for a OneUp -
Fork, hesitating between a 120mm Fox 34 performance elite or the new RS SID Select. What offset is recommended for the fork if I go for 120mm?
SRAM GX, X01 mix with Truvativ Descendant Carbon DUB cranks What crank length is recommended?
SDG Bel Air V3 seat, personal favorite
Shimano SLX 4 pot brakes
Don't know yet about the cockpit, will come to that later (740-780mm bar, 50-70mm stem)

Any other tips, tricks? I'll work my way through 63 pages comments as well of course

Dropper I believe for the medium, the consensus was 150 mm or 100 mm ( it only accepts 180 mm insert from one of the previous posts )
Fork - i believe it is 44mm offset
I am getting all all SRAM GX with 175mm and the new carbon crank ( GX )
Ive ordered the SRAM 8120 brakes.. ( should be here next week )
Still waiting on the frame..