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Re: Carbonda fm936 Thoughts
Quote from: Sitar_Ned on July 20, 2020, 10:01:02 AM
Quote from: Colt__Seavers on July 20, 2020, 04:03:46 AM
Thanks @Medico

Still missing the like function on this forum

I'll look into adding it. Thanks.

Added. Thanks for the input.
July 20, 2020, 10:44:03 AM 		1
Re: Carbonda fm936 Thoughts
Quote from: adroitrider on September 02, 2020, 04:34:43 PM
Quote from: carbonazza on September 02, 2020, 12:12:31 PM
Quote from: adroitrider on September 02, 2020, 10:00:54 AM
...I would order 3-4 additional hangers.
Does anyone have a link to a hanger that works for this frame?

The picture are quite blurred. Is it just paint scratches or it is bent ?
Did you check the frame around that area for a crack ?

Carbonda can provide you with a hanger, the shipping is cheap for such small item.

Before I was buying 2 hangers for each frames I did build.
And have a collection now as none of the riders needed it.
By experience it is useless, one is enough.
Maybe two if you are particularly unlucky.

Chasing a shifting issue. Only the two middle cogs struggle to shift down the cassette, very sluggish like the chain isn't picking up the ramps. I have been monkeying with the barrel adjuster for a few days. The encyclopedia of bike issues says this is a text book bent derailleur hanger...

Will replace and find out.

Even new hangers can be a bit out of spec and new 11/12 speed drivetrains really require a lot tighter tolerance on hanger straightness.

All home builders should invest in a hanger alignment tool, mine has paid for itself many times over already.

In fact I just had to straighten the hanger on my FM936 this past weekend after a spill and the shifting went to crap.  It looked straight to the eye, but was off quite a bit.
September 02, 2020, 05:19:37 PM 		1
Re: Carbonda fm936 Thoughts
Quote from: wfl3 on September 02, 2020, 05:19:37 PM
...All home builders should invest in a hanger alignment tool...

Meanwhile you can put an Hex5 key in the hanger screw.
And counter-bend the hanger, generally a little up and/or left.
Comparing its alignement with another bike with the same dérailleur.
Or look for web pictures, on how it generally looks.
September 02, 2020, 06:09:25 PM 		1
Re: Carbonda fm936 Thoughts
Quote from: AAJIIKOO on September 03, 2020, 05:12:05 AM
The spacer is just a normal 1mm thick steel washer with an ~6mm ID and wide enough OD and I drilled it to 10mm ID. Then I cut it with an hacksaw from 1 side so I could bend it to be able to fit it on the shock shaft and then I just bent it back and closed the gap with pliers so it fits quite snugly on the 9mm shaft. It's not going anywhere since it's under the original bottom out shim. You just have to be careful not to scratch the shaft so it's a good idea to make all edges smooth. I had to do a similar procedure back in the day to a Fox DHX Air when the seatstay was hitting the main frame hard on my Mondraker even with the stock shock.

Hum... I'll guess I'll understand this better seeing it for real.
Shock shaft, and bottom out shim are alien to me.

For the BSA/PF92 story, I'm always for pressfit, except this time as the DUB spindle I have already is too big.
We've ordered 3 BSA beginning of July too. Damn! They've sent you one of ours by mistake ;)
September 03, 2020, 05:38:33 AM 		1
Re: Carbonda fm936 Thoughts



'Finished' mine for now. Had a great first ride. Everythings worked perfectecly as inteded, only had to get used to the geo. Handles great ones you get a hang of it.

I made the wheels myself but it took me two attempts regarding spoke lengths for the straight pull hubs.... bummer but they ride great in the end. ca. 1500 grams total.

I used Slapper Tape for a chainguide (only mounted in the second picture) and i can really recommend that stuff. Very flexible solution.

I use a 165x42,5mm shock and no problems so far. Frame is a L.

I might need a 60mm stem - bike feels shorter than expected so im interested as to see what it does to the handling.

Im running 170mm cranks with 25% sag and no strikes so far. (4 rides in... )

I have a BSA BB and the window to help route the Dropper cable is very small so it was a mayor pain in ass. Got it in the end though. I did use a foam liner which makes the friction higher i.e more difficult.

Haven't weighed the bike yet but frame was to spec.

Last pic is clearance of 2,35" tires on i29mm rims and a 32T Oval chainring.

Overall it feels like a GREAT purchase. :D
 
September 03, 2020, 01:10:42 PM 		1
Re: Carbonda fm936 Thoughts Update on the lower pivot movement:

Msg'd Adam and he said to cut the pivot axle down to 80mm.  I pulled it apart and measured it at 82.5mm, so I filed it down to 81mm, cleaned everything up and reassembled and the play is completely gone now.  I think I'll leave it at 81mm for now.

Also checked out the bearings in the process and they are still very smooth.
September 29, 2020, 08:50:33 AM 		1
Re: Carbonda fm936 Thoughts Got the replacement linkage from Carbonda (recall my issue was shock mount span 0.5mm too wide and hairline crack on the linkage). Tolerances are better, but not by much (thick paint immediately flaked off the inside of the shock mount points as I pushed the shock hardware in, resulting in a looser interface, but not as bad as the old linkage.


Old linkage on the left (shinier because I have resprayed it after sanding to inspect crack), new on the right.


Interestingly, the new linkage does not have retaining circlips on the bearings.


Fitted my needle bearing hardware kit


Everything seems good without play after torquing everything up. We'll see how it fares after a few rides.
October 20, 2020, 02:36:02 PM 		1
Re: Carbonda fm936 Thoughts Hi All,

Long awaited is my completed build photo. I took the bike out yesterday for the first time on proper trails. It rides like a dream. The suspenion is very efficient on the climbs and supple on the small stuff without bob. It feels like a magic carpet ride. My 2 friends said they've never ridden anything like it before - in as good way. I was hitting 500m long rock gardens, 20cm deep mud dh tracks, flowy jumps no problem.

The Rockshox SID Select 120mm 44mm is fantastic. It eats up the chatter and roots but gets very progressive towards the end of the stoke never bottoming out. 
Shimano XT 12s is fantastic, cant fault it, shifts under power so so well.  XT brakes are fantastic and cannot fault them.  The BTLOS wheels are a dream, carbon wheels are like riding on train tracks, not a jot of flex. 11kg helps the climbing performance no doubt!

You can see my excel for the build in my previous comments! The only thing you need is a external lockring for the front disc due to the 15mm axle.

for 3.5k euro I think to replicate the Geo and spec of my build, the only things on the market are the NS or specialized epic Evo. For a similar spec both are 5.5k-6.5k euro.

Basically, you can replace the frame and the whole drive train OR buy a second set of carbon wheels, and still be less than the Specialized Epic Evo. In my opinion that's better than any warranty!!! 



October 22, 2020, 05:54:31 AM 		1
Re: Carbonda fm936 Thoughts I asked Wing, what their recommended way of housing guidance around the shock looks like. She sent me the drawing
October 30, 2020, 03:01:02 PM 		1
Re: Carbonda fm936 Thoughts
Quote from: Roby13 on November 05, 2020, 01:07:35 AM
Hi guys,

I found thist threat yeasterday and I I read the whole thing because I want to order this same frame, thanks for all that cool information :).
My only thought is ,wich frame size would fit me better.? Comparing the geometry with my actual Scalpel Si in L, the carbonda frame is pretty big so I'm considering downsizing to M. What you guys think?
I am 1,83m tall and I usually have my saddle height at 77,5 cm (BB to top of the Saddle).
Anyone riding a M with more or less the same saddle height?

Thanks again and keep posting those cool bike pics!

Hi,

The reach is longer but the seat tube is steeper.
What you need to look at is the distance between saddle and handlebar (horizontaly and verticaly) to have a nice riding position.
I am 1,78m with 75cm BB to top of the saddle. With a L size and a 40mm stem (what i like to ride), I have the same horizontaly and verticaly position as my Orbea Alma size L with 60mm stem.

The main difference is that on steep uphill, with the Orbea Alma, I was seated "on the rear wheel". What means poor handling and struggling to keep the front wheel on the ground.
Conclusion : I suggest you take the Carbonda L size.
November 05, 2020, 03:12:21 AM 		1