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Messages - dhengen

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1
Somehow i'm still struggling with a bit of headset play:
- the expander sits tight and flush in the steerer tube during and after headset compression

I found the expander needs to sit just a bit under the top of the stem. This way, when you tighten the steerer tube bolt, it can pull the cap down on the stem, while pulling up on the steerer tube. I hope this makes sense, but I think if the steerer tube is perfectly flush with the stem, then the cap has nothing to pull against as you tighten the bolt. I had play that I couldn't get rid of until I took the steerer tube down a bit more and then things tightened up nicely.

2
Well my build is 90% complete. Waiting on some power meter SRAM Force cranks to finish the build. Running some loaner cranks for the time being.

Mixed feelings about this bike. The quality of the paint (see pic of example - it chipped really easily. Has happened in a few locations), issues with the headset plug (as others have noted) and misaligned brake caliper mounts were low points (normal methods for aligning brakes didn't work, needed to really play around to eliminate brake rub). Overall required excessive fiddling to get things right, in my opinion.

The bike rides well enough, but it seems noisy and the wheels I chose are probably too stiff. I can't tell if the noise is the chain/cassette combo? Open to feedback, based on my componenet selection - maybe I'm made some bad choices. Once I get final parts on it, I'll weigh it. I'm not shooting for weight weenie but I think it'll end up light as a result of all that carbon.

Here are the specs:
- SRAM Force AXS brakes and shifters
- SRAM GX AXS rear derailuer (went mullet on this build, good for where I live)
- Garabuk 10-50 cassette
- SRAM Rival cranks with 42T cassette (upgrading to SRAM Force with PM and 44T when it arrives)
- Shimano 160mm ICE-tech rotors
- SRAM GX chain (for now)
- WheelsFar Wheels. 50mm deep, 24mm internals, 30mm external width, DT350 hubs with aero Sapim spokes
- GravelKing SK 43mm tires
- 400mm handlebar and 110mm stem on 58cm frame
- Specialized Power Comp Saddle (not what's on in pic, but have since swapped it out)

Anyone else find specing and building bikes to be almost more fun than riding them?




3
I'm running 160mm rotors with SRAM Force, no adapters needed.

I'm running SRAM Force as well, so this is perfect. Thanks

4
can anyone comment if the frame brake mounts are setup for 140 or 160mm rotors by default? I've ordered 160mm rotors and need to know if I need to get my hands on some adapters.

5
Okay, I need some help. I know the BB on the frame is BBright. If I order DUB compatible BBright bottom bracket, can I run a crankset like this one? Sorry if this seems ameteur, I get overwhelmed by BB/crankset options and different standards. I plan to upgrade the chainring with a 44T one.

https://www.competitivecyclist.com/sram-rival-axs-1x-12-speed-power-meter-crankset


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I was running a mullet setup initially, 10-50 SRAM Eagle GX AXS in the back + 42t SRAM Force AXS crankset. Changed it to SRAM Force XPLR AXS 10-44 + 44t SRAM Force AXS crankset.

Interesting - what has made you switch away from the mullet setup? That's exactly the route I am thinking to go. And thanks for confirming 44T up front is max.

7
Someone might have mentioned earlier - apologies if so...

But what is the max chainring that can be run on the front? Thinking to go with GX AXS wide range cassette and run a 44, maybe 46 up front.

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29er / Re: Carbonda fm936 Thoughts
« on: November 13, 2020, 01:21:16 PM »
Are you happy with sizing down? How does your build ride? Did you end up changing the stem or headset spacers to increase reach/stack?

I sized up and have no complaints.

Yeah, I'm definitely happy with the bike. I was worried it might be a bit small and I'd have to push seat back in rails or go longer stem. But the fit is fine with seat centred in the rails and a 50mm stem. The centre of the bars to seat measurement is within 5mm of my 2019 XL Commencal Meta TR, which has the same HTA, STA so it feels very similar to that bike, but weighs about 10lbs less and pedals like a hot damn! Looking forward to doing XCM with it.

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29er / Re: Carbonda fm936 Thoughts
« on: November 09, 2020, 12:13:19 PM »
I don't want to upset anybody here or deviate the threat so I'm going to try for the last time to explain my point.
Let's say I'm going to buy a new xc bike with modern geometry. In terms of HT angle, ST angle and wheelbase the closest a I could find are the BMC, Unno and Mondraker. On any of this brands I will take hands down the L size which is the one I have always ridden and I don't think any of you would advice me to by the XL. Well, if I take the L from Carbonda it would equal a XL from those brands.
Of course I can ride a XL just lowering the saddle on those and due to the long wheelbase it would be stable and planted on the downhills but it won't feel nimble or fast cornering or going up, which you really need on xc bike.

Hey - I'm late to the discussion, but I was between L/XL sizing and sized down for lots of the same reasons you are considering it. From all your replies you've given, I think you want to size to M and I think you should trust your intuition, which is based on some solid data and your gut feeling. Your point about size M on this bike being a L on most mainstream brands is exactly why I sized down as well. Have fun, after all this is riding bikes!

10
29er / Re: Carbonda fm936 Thoughts
« on: October 24, 2020, 07:37:36 PM »
Thanks! I have been reading quite a lot on the offset, 51mm seems common on 120 forks that replace 100mm forks to decrease the trail a bit caused by the longer stroke and slacker head angle. However, to increase slow speed uphill maneuverability, progressive brands move the wheel towards the frame again by reducing the offset to 44. I think I'll look for a 44mm 120 fork.  ::)

I found it helpful to take design cues from NS Bikes, who use this frame on the Synonym. They use 44mm offset on 120mm fork, as well as 170mm crank length (175mm on XL being the exception).

11
29er / Re: Carbonda fm936 Thoughts
« on: October 23, 2020, 08:50:19 PM »
That Fox DPS is cheaper on e-bay than Fox Academy? No way!

Also was issue with supply. Many items on the pro site were out of stock. I couldn't get a shock even if I wanted, but if it was in stock it still would've been cheaper to go with the ebay DPS.

12
29er / Re: Carbonda fm936 Thoughts
« on: October 23, 2020, 02:24:32 PM »
Finished the build! Too bad winter has come a bit early and won't be able to ride till the spring now. Build specs:

- Size Large Frame; custom painted "Chrome Green"
- Shimano XT 12spd
- Shimano XT brakes
- E*thirteen XCX iW28 rims
- Bontrager XR4/XR3 tires
- RaceFace Next R cranks (170mm)
- RaceFace Next Handlebar (760mm)
- RaceFace Stem - 50mm
- OneUp Dropper (210mm)
- Giant Contact Seat
- Fox 34 SC 120mm, 44mm offset
- Fox DPS Float 42.5mm (the one everyone was buying on ebay)

The bathroom scale test (me with bike, me without bike) says 27lbs, but I sure hope that's wrong cause my spec sheet says it should be around 25lbs based on listed weights + 1lb buffer. Will have to get to a bike shop to properly weigh it. I spent about $5200 CAD on this, but did have some access to pro deals for RaceFace and Fox gear. Bought a bunch of the Shimano stuff on AliExpress a few months back before the prices started climbing.

13
29er / Re: Carbonda fm936 Thoughts
« on: October 10, 2020, 03:36:56 PM »
Just received my frame with custom paint job. Super stoked to build it up. Like everyone else has said, I opened up all the pivots and greased everything. Overall quality seems good. Will post a final build pic and what parts I used.


14
29er / Re: Carbonda fm936 Thoughts
« on: September 09, 2020, 04:28:13 PM »

 
Looks like a very light build. Wonder how much you did spend on components.

Why you did take size L? Your seatpost length looks enormous!

I took an L because my Torso is short compared to my legs AND my local woods are quite tight and twisty. I was a bit worried about the overall length of the XL. I like the low handlebar on my L so an XL would have needed negativ rise stem and flatbar to get the same position. Its all compromises!  ::)

I understand. I'm 6'2" and have ordered a L for similar reasons. I'm going to start with 50mm stem and can run 60mm if needed. When descending it should fit really well. I did want that agility and nimbleness when pedaling in tight/twisty areas. At my height I'm usually just between sizes so will likely have a big seat-post showing (have the same OneUp 210mm dropper). Frame should be showing up later this month!

15
29er / Re: Carbonda fm936 Thoughts
« on: August 22, 2020, 07:56:51 PM »
Ordered my frame last week - super excited to receive it. I did decide to size down to a L (I am 188cm tall) to keep a bit quicker handling and climbing.

A few questions:
1. What is the max rotor size the rear will accept? hoping to go 203mm up front and 180mm out back.
2. Are most people ditching the headset that they include? I opted for it as it was pretty cheap. Not sure about quality.
3. Does the frame come with hardware bushing required for the upper shock mount (8mmx22.2mm).
4. I've seen people saying you should open up all the bearings on the rear link and grease them. I think I'll be doing that (not a question I guess..)

Went with custom paint job too! Will post a pic when I receive it in the next month or so.

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