Quote from: Medico on December 17, 2019, 03:52:21 PM

Quote from: numberzero on December 11, 2019, 02:08:58 AM

It seems something scratched your frame and the bolt too, probably just paint.
Can you check with no pressure in your shock if you can take full travel without contact issue between rear and seattube?

This is the clearance with 42.5mm shock

I seriously don't understand how people make the frame flex so much to fill this gap?
Even if this thing was possible, the energy of the impact will be very low because it's first dissipated in the shock and then in the frame flex.

The gap looks much larger on your frame so maybe there is some variance in the tolerances of these frames. It didn't require much force at all to make the seatstay to hit the frame: with the shock deflated and weight on the seat just a little nudge  was enough for contact to happen. The same was happening when riding the bike with the shock pressurized: just bouncing with your weight back was enough to make audible clunk. The force is much greater in real riding conditions so I'm sure that the seatstay would have hit the main frame very hard if I haven't reduced the travel.

Hello All,

I finally received my FM936 frame this week after ordering it at the beginning of July. There were some negative, neutral and positive surprises:

Negative:
- The seatstay definitely hits the main frame at bottom out with Fox 165x42.5mm shock. There is only 1-2mm of clearance when shock is deflated but as usual that is not enough because the frame flexes in the real riding conditions. This was confirmed when test riding the bike for the first time. I fabricated an extra 1mm steel spacer under the bottom out o-ring and shim and that was enough to prevent this from happening. But I may fabricate another 1mm spacer just to be sure...
- The trunnion width on the frame was 56mm and 54mm on the shock. I had to fabricate 1mm spacers to either side to fit the shock correctly.

Neutral:
- I ordered the frame without any special requests but I was quite surprised that the frame had BSA bottom bracket. Luckily I had totally forgot to order a new PF92 BB (I transferred all the parts from my carbon hardtail with PF92) and I could find BSA BB even from shitty local bike shops (although only Deore level but that's good enough for the time being). Some would be quite happy to have BSA over PF92 but I have never had any problems with PF92.

Positive:
- The frame looks really good.
- The shipping was by train and to my surprise I didn't have to pay any taxes.
- The geometry and handling is really good (size M, my height 174cm). It feels like a new school enduro bike but is light and efficient.