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Re: Carbonda FM-1306A a 69° Hardtail Hi all

First post here. Have been following for a little while to get advice and inspiration for a new build, which I finished yesterday. So thought I’d contribute with info and experience in case useful/interesting for others.

Build list:

- FM1306a XL in RAL 1015 (light ivory)
- XMCarbonspeed wheelbuild KAS930C 29er T800 on DT Swiss 350 with Sapim
- Fox step cast 32
- Formula cura brakes
- SLX cranks, rear mech, XT chain, BB
- ZRACE chainring
- Sunshine cassette 10-50
- BikeYoke Divine SL dropper
- Selcof bars
- ZTTO XC stem
- Barzo tyres
- Cheap, light Ali saddle
- Risk grips and seat clamp
- Ritchey headset
- XT pedals

Weight 9.68Kg including cage and Garmin mount.

Dealing with Wing at Carbonda was great - really helpful and quick communication. The frame and paint quality seems first-rate, can’t find any faults at all. Likewise Peter at XMCarbonspeed. And the wheels arrived with me in the UK about 10 days after I paid for them - super fast!

Most of the Ali stuff looks decent, albeit yet to ride. The Sunshine cassette seemed harder to index than it should have been. The bar plugs that came with the Risk grips broke when fitting them. Otherwise all looks good.

I replaced the top section of the headset that Carbonda supplied with a Ritchey 1,1/2 to 1,1/8, based on feedback on another thread.

I’ll chop off the rest of the steerer once I’ve dialled the position - I think the -20 degree ZTTO stem might be a bit too aggressive….

Photos hopefully attached!

April 12, 2023, 02:24:59 AM
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Re: Carbonda ACR Headset Fix Hi all

Just wanted to say @binaryagent thanks a lot for this post. I’ve just built up a Carbonda 1306a (see post in that topic) and based on your post I chucked the headset upper that came with the frame and put in the Ritchey 1,1/2 to 1,1/8. (Easily sourced here in the UK.) Fits nice and flush. For those interested in this kind of thing it weighed 76g for the 1,1/2 bearing, the adaptor ring to 1,1/8 and the dustcap. The bearing on its own is about 30g from memory


Additional Resources:

FSA Replacement Bearing:
https://www.fsaproshop.com/products/acb-bearing-1

Enduro Bearings shows that these are replacement bearings for the MR-127 bearing (these are thinner than the FSA bearing above and more like the Carbonda bearing):
https://cycling.endurobearings.com/products/acb-6808-cc $18
https://cycling.endurobearings.com/products/acb-6808-cc-ss $32
https://cycling.endurobearings.com/products/acb-6808-cc-sxd $109

Unavailable FSA ACR Retro Fit:
https://www.fsaproshop.com/products/no-55r-1-5-558 $45

Ritchie Headset:
https://www.bike-discount.de/en/ritchey-comp-cartridge-drop-in-1.5-upper-headset ~$74



The FSA PDF doc shows the ACR specs for the head tube, bearings, etc.

BrokenTibia took a nice picture (attached) to show the difference in the Carbonda and FSA bearing. You can see why the FSA bearing would sit deeper in the head tube and would be more stable. The bearing retainer above the bearing is what really needs more stability though.

April 12, 2023, 03:19:45 AM
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Re: Carbonda FM-1306A a 69° Hardtail Thanks. The gold bits are vinyl decals - good spot! I wasn’t 100% sure what to go with and so thought I’d experiment a bit. Actually a pretty close match to the kashima gold on the forks.

Good luck with your build, will be interested to see how it goes

Very nice build! Are the golden elements a part of the painting or did you add some golden adhesive?

My frame is somewhere between China and here... I can't wait to  hold it in my hands. And then having a sleepless night.

April 14, 2023, 12:46:51 AM
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