Carbonda fm936 Thoughts

[wfl3]

Almost done.  Just gotta get the cockpit adjustments finalized and cut the steerer down to final length.

looks great dude!! Looks fantastic. Which Light carbon rims did you go with? manage to build them yourself?   I'm doing the bill of materials for one at the moment! (quarantine activities) . Think I'll go with a mix of XT brakes (2 cylinder front, 1 cylinder back), derailleur, shifters with SLX cassette and cranks!

Those were built by iubike (now defunct) and were on a previous bike.  EIE has what looks like the same rim:  https://www.eiecarbon.com/a29c25d22s-mountain-bike-carbon-rims.html

I almost went with SLX brakes because the hose routing was so much cleaner for the rear, but the levers didn't mesh well with the older XTR 11sp shifter for me and I didn't feel like converting it to i-spec.

[Memphis]

How did you guys contact Carbonda, any (dis)advantages to contacting them via their site compared to alibaba?

And hay anybody ordered the frame with BSA? Would be my preferred choice.

[Pharaohollie]

How did you guys contact Carbonda, any (dis)advantages to contacting them via their site compared to alibaba?

And hay anybody ordered the frame with BSA? Would be my preferred choice.

I contacted them via Skype, and Adam @ Carbonda has been fairly quick with replies.

See page 21 of this thread ( http://chinertown.com/index.php/topic,2079.300.html ). @Zdrenka89 ordered a frame with a BSA BB. I think someone else tried but he was told they're all out and he'd need to a minimum order quantity of frames for them to make them with threaded BBs.

[Zdrenka89]

How did you guys contact Carbonda, any (dis)advantages to contacting them via their site compared to alibaba?

And hay anybody ordered the frame with BSA? Would be my preferred choice.

I got in contact with them through their webiste. Dont know if there is a difference compared to Alibaba. I communicated with Adam aswell.

I have ordered with BSA like mentioned above, but the frame is being painted so delivery will take time.

[RobertRinAustin]

Those were built by iubike (now defunct) and were on a previous bike.  EIE has what looks like the same rim:  https://www.eiecarbon.com/a29c25d22s-mountain-bike-carbon-rims.html

I almost went with SLX brakes because the hose routing was so much cleaner for the rear, but the levers didn't mesh well with the older XTR 11sp shifter for me and I didn't feel like converting it to i-spec.

Their wheels are really cheap. Wonder if anyone has tried them?

[wfl3]

Those were built by iubike (now defunct) and were on a previous bike.  EIE has what looks like the same rim:  https://www.eiecarbon.com/a29c25d22s-mountain-bike-carbon-rims.html

I almost went with SLX brakes because the hose routing was so much cleaner for the rear, but the levers didn't mesh well with the older XTR 11sp shifter for me and I didn't feel like converting it to i-spec.

Their wheels are really cheap. Wonder if anyone has tried them?

Good info on those and others in this thread:  https://forums.mtbr.com/29er-components/cheap-chinese-carbon-rims-673410-46.html#post14698207

[Pharaohollie]

Anyone running a 34T oval chainring on their FM936? If yes, what crank/chainring combo are you running and how's your chainring chainstay clearance?

My BlackSpire NW Oval 34T on Shimano M8000 (non-boost) doesn't clear the chainstay (not too surprised, just thought I'd try). Back to a round 34T chainring for now, but I love oval rings. Chainline is pretty good with a non-boost crank so if at all possible, I'd rather not buy a boost crank to run oval unless that's the only solution.

[RobertRinAustin]

Those were built by iubike (now defunct) and were on a previous bike.  EIE has what looks like the same rim:  https://www.eiecarbon.com/a29c25d22s-mountain-bike-carbon-rims.html

I almost went with SLX brakes because the hose routing was so much cleaner for the rear, but the levers didn't mesh well with the older XTR 11sp shifter for me and I didn't feel like converting it to i-spec.

Their wheels are really cheap. Wonder if anyone has tried them?

Good info on those and others in this thread:  https://forums.mtbr.com/29er-components/cheap-chinese-carbon-rims-673410-46.html#post14698207

Thanks, had forgotten about the Cheap Chinese Wheel thread. 

[theirishrider]

Those were built by iubike (now defunct) and were on a previous bike.  EIE has what looks like the same rim:  https://www.eiecarbon.com/a29c25d22s-mountain-bike-carbon-rims.html

I almost went with SLX brakes because the hose routing was so much cleaner for the rear, but the levers didn't mesh well with the older XTR 11sp shifter for me and I didn't feel like converting it to i-spec.

Their wheels are really cheap. Wonder if anyone has tried them?

Good info on those and others in this thread:  https://forums.mtbr.com/29er-components/cheap-chinese-carbon-rims-673410-46.html#post14698207

Neat! I'm searching from for some 30mm internal diameter ones - seems they're the go to for pros doing marathon. I love the look of the new shimano XT hubs with straight pull - but most places only offer DT swiss.

[Zdrenka89]

Neat! I'm searching from for some 30mm internal diameter ones - seems they're the go to for pros doing marathon. I love the look of the new shimano XT hubs with straight pull - but most places only offer DT swiss.

Im actually building wheels on those Straight pull XT hubs. They seem like good value. I ordered 360g Carbonfan XY T800 29mm internal carbon rims to lace them into. Should be around 1500g wheelset weight.

I ordered the hubs to do some measurements myself as I'm somewhat sceptical of the listed dimensions from Shimano.

[ChinaCruz]

Neat! I'm searching from for some 30mm internal diameter ones - seems they're the go to for pros doing marathon. I love the look of the new shimano XT hubs with straight pull - but most places only offer DT swiss.

For my marathon 29er I went with 25mm rear, 30mm front. Carbonfan T800 rims were 300g/360g. It works nicely.

[Medico]

Same kind of a problem as with my lower bearing... I have play at driveside... They should had used bearings or bushings instead of mounting direct in/on the carbon frame. Better bolts would help also.

Besides these small issues its a nice frame and bikes very wrll

Maybe I am misunderstanding something, but the lower mounts do run on bearings, no?

Did that play develop after riding or was it from new?

What model is your shock and which upper mount hardware did you buy?

They do run on bearings, but not only the part which goes through the seattube, the parts which go through the rear triangle dont have an extra sleave or bushing or so...its bare carbon.
I noticed it on my frame within the fist 1000km.

And my shock is a rs deluxe 165x42.5

Hooe this info helps

Sorry, I am still a bit confused. Do you mean this part?



If yes, then these rear triangle bolts run through bearings. The bearings sit in the rocker and are retained with circlips. See below:




There are six bearings in this frame in total. The main issue I see is that the outer torx bolt on the rear triangle binds the conical washer (I am not sure if that's the correct term) underneath it directly on the carbon. If you're not careful with how you undo these bolts (you must undo the 5mm on the opposite end while holding the torx bolt still) the conical washer/spacer under the torx bolt will dig into/start peeling the outer layer of carbon. I see the NS Synonym rocker has a recess that the bolts in this position go in, so I am not sure if it's any better on the Synonym.

The lower pivot is the main concern. Yes the rest have aluminium inserts in them...lower pivot doenst, the bolts go direct on the carbon

[carbonazza]

For my marathon 29er I went with 25mm rear, 30mm front. Carbonfan T800 rims were 300g/360g. It works nicely.

Interesting. Do you mind to share the logic behind having different wheels width for front and rear ?

[wfl3]

For my marathon 29er I went with 25mm rear, 30mm front. Carbonfan T800 rims were 300g/360g. It works nicely.

Interesting. Do you mind to share the logic behind having different wheels width for front and rear ?

For me the reason is to run a bigger tire with a bit more footprint up front.  I run a couple of my bikes like this.

[Maze44]

Hello,
i am new in the forum!
I have already buyed the frame fm936. Now i look for the right shock.

I found this one:
https://www.ebay.com/itm/143042612579

Is is the right one? There is some Note:

Note: If your frame uses a shock with eyelets on both ends, this shock will not work. Please look at the photos. This shock has an eyelet on one end and a trunnion mount on the other. This is a newer configuration and is not compatible with older bicycles

Can anyone help me?

Thanks

Maze44