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Re: Chinese Santa Cruz Any word on manufacturer yet? I’m really interested in this frame.
October 25, 2019, 04:23:31 PM 		1
Chinese 650B FS frame with modern geometry? Is there a Chinese frame that has modern geometry that could compete with something like a commencal clash? I was originally going to just buy a complete bike but the ones I'd be interested in I'd have to wait a very long time for, so now I'm looking to build something. I was looking to get the Commencal Clash frame and then build up from there, but I was curious if there was any full suspension chinese frames that maybe were similar in geometry to the newer stuff that I could start with instead? I know the iCan P9 and P1 are talked about a bit but it seemed they were a bit older design? I'm looking for something with full suspension and decent travel to build a well rounded bike for trails and stuff around Ohio. If I can spend less on the frame it gives me a lot more budget for suspension and what not. The Commencal Clash frame is 1399.
June 22, 2021, 09:38:25 PM 		1
Re: cybrsrce AM831 build I found a decent tune for my local trails so here are some numbers for others that may have trouble dialing it in:

Rider:
225lbs/102kg with winter gear and full pack

Bike:
33.44lbs/15.16kg

Fork (160mm Rockshox Zeb Ultimate RC2):
68psi ~30% sag
Rebound 8 clicks from closed
HSC 2 clicks from closed
LSC 1 click from closed
No volume tokens

Shock (210x55 Rockshox Super Deluxe Ultimate with MegNeg, generic MM tune):
292psi ~32% sag
Rebound 4 clicks from closed
LSC 1 click from closed
No volume tokens
2 bands in the MegNeg

Tuned to be planted but still have enough pop to jump.  For me, Trailhead and SC base recommendations were way off.  Took about 10 rides to get the shock right and there aren't even a lot of knobs to twist.

The Eliminator lasted 1.5 rides without a puncture.  Change the compounds all you want, Specialized tires are still too thin.
December 22, 2021, 11:25:25 AM 		1
Re: FM1002 / FM1166 - 150mm frame
Quote from: FullCarbonAlchemist on January 13, 2022, 01:03:12 PM
How long did it take after you ordered for your frame to ship? I ordered on Dec. 29th and am still waiting…

As for suspension, I think you’ll really like a Topaz with this bike. The ability to fine tune the very bottom and very top of the travel via the positive and negative spacers, plus being able to tune damper support (bladder pressure) separately from the air spring should be perfect for a bike with kinematics like this. I’m expecting to put 2-3 spacers in the positive to compensate for the regressive dip after 140mm of travel, and zero in the negative since the rest of the travel is nicely progressive. Bladder pressure should be able to stay low (175-180 I’d guess) since leverage is reasonable and the linkage has good anti-squat.

I’ll definitely be posting updates to those thoughts when I can actually test the bike out, but it’s going to be a slow build process so that might be a couple of months away.

I’m also going to test out over-stroking the frame, as I got a 205x65 Topaz. If 163mm travel is too much and the seat stay bridge hits the seat tube, I have a 2.5mm travel spacer to cut that to 156. Figured folks here will be interested to know how that works out.

I ordered my frame on the 23rd of Dec and an hour after I sent my previous message the frame tuned up! Mine was shipped with WXY international express.

I originally thought about putting 3 spacers in the negative to begin with so its good you are thinking the same thing, will play about with setting once I get the bike out on the trails. I quickly put my fork, shock and wheels on the bike today and did have a look at to see how close the seat bridge gets the the seat tube when bottomed out as I over stroked my last frame and did think it might be possible on this but I think 65mm will be to much and 62.5mm might be possible but will be close.
January 13, 2022, 02:22:24 PM 		1
Re: Trusted 150mm 29er suggestions
Quote from: veeTee1Pah on May 03, 2022, 08:21:38 PM
The most modern candidates seem to have some concessions compared to mainstream-branded frames. Do these issues give anyone else reservations?

FM1002 Quirks.
  • The bottom bracket drop is 20m if I'm reading the geo chart correctlty. This is pretty high for a 29er. Maybe appropriate for a mullet?
  • FM1002 kinematics are not progressive. Leverage curve is pretty flat (<10% progression) with a regressive section at bottom out. It seems like most mainstream brands have moved to a smoother, more progressive leverage curve.

AM831 Quirks.
Another recent frame that seemed promising, but has been plagued by design problems.
  • The fork hit the frame in some sizes, so a spacer was needed under the fork.
  • The first generation rear triangle was badly designed. If flexed badly, and bearing retention was an issue.
  • A new rear triangle was released for the AM831 that may have solved problems with the v1 design, but more feedback from actual owners is needed to verify

I, too, would consider an aluminum frame, but it seems modern geometry aluminum frames just aren't lucrative enough to offer to the public. Carbon frames are the default mountain bike frames available. I've also seen a video about a bad injury sustained when a Chinese frame snapped under a rider. I guess the reputation of a frame matters.


With some careful research, you can figure out who the reputable manufacturers are that are often also making frames for others. In the case of Carbonda and the 1001/1002 this includes KHS, Sherpa and NS Bikes. My son and I have a spreadsheet running. So far, without diving into the geo detail, we are down to Dengfu, Ican, Carbonda / Flybike and TanTan / Seraph. More research is required so any knowledge of trusted manufacturers over resellers from here is greatly appreciated.
May 04, 2022, 09:59:17 AM 		1
Re: Trusted 150mm 29er suggestions
Quote from: veeTee1Pah on May 03, 2022, 08:21:38 PM
FM1002 Quirks.
  • The bottom bracket drop is 20m if I'm reading the geo chart correctlty. This is pretty high for a 29er. Maybe appropriate for a mullet?
  • FM1002 kinematics are not progressive. Leverage curve is pretty flat (<10% progression) with a regressive section at bottom out. It seems like most mainstream brands have moved to a smoother, more progressive leverage curve.

On point 1, I honestly like this about the 1002. My other bike is kind of stupid-low and I’ve been trying for years to get it higher off the ground (longer forks, 27.5x2.8 tires) without totally compromising the handling. The next (and probably final) thing I’m going to try is making it MX with a 29in front end and only 10mm less travel than the full 27.5 setup.

I don’t find the 1002 problematically high at all, but pedal strikes haven’t been much of an issue which is refreshing.

As to point 2: my experience with a DVO Topaz (a fairly linear air shock) has been that this isn’t much of an issue either. We’ll see how things are when it’s mid season and I’m trying to land the biggest jumps of my 30 year riding life…but so far I’ve launched a few pretty decent ones and come nowhere near bottoming out. No weird feeling on landing from hitting that regressive dip in the last 20mm of wheel travel, because I haven’t reached far enough into it yet.

I’ve actually considered removing one of the two positive chamber volume spacers I installed, to see if I can get into that part of the travel. I’d say with two spacers, you’re pretty safe from any noticeable symptoms of the regressive dip unless you send *HARD* to flat.
May 04, 2022, 09:11:21 PM 		1
Re: FM1001 / FM1156 - 135mm frame True, but I specifically wanted the lesser travel 135mm frame with lesser wheel base. But, it looks like I’m keeping the existing 150mm frame and Carbonda is working out a deal for me to receive another FM1001 frame. So, if all goes as said… I’ll still come out ok and will build the FM1002 soon as well with a 160mm fork and a coil shock. More builds coming in my near future. I’ll leave plenty of feedback on both bikes when the time comes
July 21, 2022, 06:50:29 PM 		1
Re: FM1002 / FM1166 - 150mm frame
Quote from: casual_build on September 14, 2022, 02:39:06 PM
Yeah the small bump compliance on the DPX2 is bad. Honestly the lyrik's small bump performance isn't very good either. Still both a very supportive, big drops feel plush while bumpy green trails feel shakey.

If I was going to fix the small bump compliance I would probably swap out both the front and rear shocks.

According to serveral reviews the lyric should be fine for small bump compliance, but needs some tweaking. Adding some tokens and lowering pressure can help with small bump, but could also make the fork more progressive.
Not tried myself, because havent't got the yet nor the fork.

Good luck.

Ps alternatives with excellent small bumb: the new fox 36 and offcource dvo diamond or onyx
September 14, 2022, 02:55:18 PM 		1
Re: Aliexpress Cyber Monday Discount I really have to contemplate and defer from going on AliEx website for the meantime because I just ordered a $700+ 105 di2 upgrade kit.... That's already beyond my budget means and I don't know why I still ordered one lol
November 29, 2023, 10:33:50 AM 		1
Re: BXT-MTB-117 150mm AM bike 1) Original washers have more space for lubrication and a larger diameter than the bearing. And on the original links there are grease fittings that fill this system with lubricant without the need for disassembly! It makes sense to realize this beauty if you have links with grooves for large washers. But Chinese links do not have grooves and there is no place for it either. Therefore, I decided to use simple washers with a thin dust gap filled with lubricant - it will not allow moisture to easily reach the balls.

2) I just have an extra shock absorber of this size lying around “under the sofa” for a long time.
March 19, 2024, 02:42:40 AM 		1