Chinese Carbon MTB Forums
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Re: 1 x 12 Sram TT Setup
I run a 1x Sram 50t chainring and 10/33 casette, was enough for me for a rolling course with a 2.5k elevation. Might change to a 52t for future flat courses.
September 12, 2024, 10:39:15 AM |
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Re: Race frame with UDH hanger
Adapt just dropped this on their FB stories 3 hours ago... UDH EDIT: Oh...Adapt has been teasing us with this frame for months now. September 24, 2024, 11:47:34 AM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
Can anyone explain to me what Z3 quality is and all the other qualities? I think hambini made it up so he can sell more light carbon frames and get a kick back from them October 21, 2024, 02:42:32 AM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
The real question is: is this Z scale a real bike industry thing or did Lightcarbon more or less invent it as a marketing tool? I believe it's marketing and the equivalent to a coupon code so influencers can get paid October 21, 2024, 08:40:35 PM |
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Re: Frame req? (Aero, dropped SS, high stack, short reach)
OK. So here is our goal to do this new frame, same standard as Faxxxx on headtube and bottom bracket testing. One piece mold and latex molding High stack, short reach, more aggressive geometry than Factor but less than Pina X 700*35C max tire clearance, UDH, T47 85.5mm bottom bracket, both top and down 52mm headtube aero seat post but with two types seat clamps for either 7*7 or 7*9 saddle rails dropped seat stay, aero design Size 54cm weight would be around 895+/-30g after painted and with front and rear derailleur hanger mounted. Here is my only question now: which position do you like the battery located ? Seat post or low side of bottom bracket ? January 02, 2025, 04:09:49 AM |
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Re: Spcycle New Mold SP-R088 Carbon Road Frame
Maybe I can swing by one of the higher end bike shops near me and ask if I can try an SL8!  To be honest I've never owned a high end road bike. I prefer going on vacation every summer instead!  The only reason I went with this frame is due to having familiar geometry and it just happens to have the specs and weight I want within a certain price point. I did keep my TFSA SL6 clone intact and I can compare the two on how they ride. Both are similar, but I'm running that bike geared different with a 52-36/11-32t and the R088 will be on a 50-34/11-34t setup with climbing as a priority.
January 06, 2025, 03:38:17 PM |
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Re: Frame req? (Aero, dropped SS, high stack, short reach)
This is looking really good Peter, this is a production version already? Can you share pictures of the whole frame and profile of the handlebar?Here they are. May 01, 2025, 06:31:42 AM |
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Re: Winspace SLC3 and SLC5 manufactured by Flybike?
If he has visited Flybike he might know. Back in the day, they had different manufacturing, but these things change. One thing to keep in mind is that, while more expensive, one-piece molding is quickly becoming the norm, and the $610 LTK266DSL is made that way, and I am sure there are others as well at similar price points. You don't need to pay SLC3 prices to get a frame that light or made that way. Pet peeve. "Monocoque" does not mean what PT says it does. Same mistake I see repeated here on this forum. While the literal translation is "single shell" or something, in engineering terms it refers to a single load-bearing structure that serves as the shell. Making a frame in two pieces does not make it "semi-monocoque" as when assembled the load would still go through the shell. That designation applies to a structure where the skin is partially load-bearing and there is additional reinforcing structure inside, like an airplane fuselage. October 30, 2025, 06:18:39 PM |
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Re: XM Carbon Speed Race Frame - The wish list
I made a second iteration. This one actually had some planning behind it so it turned out much better than last time when I was making it up as I went. There are still some errors (I wish I remembered what I was doing when I sketched out the fork crown 2 mm further forward than the head tube) and some things I didn't have the foresight to plan around, but for the most part it's alright enough that I can put it through some cfd. The fork even turns a full 360° without contacting the frame. Should still clear 40mm tyres and geometry is a touch more aggressive When I posted the first design, a user messaged me that they saw some prototypes from XMCS, so they are probably far along enough in production that if there are any similarities, they probably arrived there separately. I won't clog this thread further so it'll probably just be a private passion project from now on. November 19, 2025, 06:35:22 PM |
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Re: Zen Carbon Wheels Xiamen
Dusted off the rim cfd setup for this. Caveats, this isn't professional grade stuff and it's only one orientation at a time, in a 2d plane, so not a representation of what drag on a whole wheel looks like, but still useful as an isolated comparison. Also debatable how accurately I eyeballed the shape of a tyre. The rim profiles were traced from pictures, but I think I hit those pretty well. 32 mm WAM tyre at 40 km/h, from 0 to 20° of yaw. "Forward" orientation means the tyre is the leading edge, "reverse" means the rim is the leading edge. "Large r" is what most are describing as "U shape", "small r" what is being described as "UV". Drag plot attached. Can see that the small r profile exhibits slightly lower drag at lower yaws, but it also stalls earlier, which could possibly indicate worse stability (THIS IS NOT A RELIABLE ASSUMPTION). The point of stall can by identified by the abrupt and sharp rise in drag, anything after that is unreliable data (or rather, even less reliable than it was in the first place). CFD snapshot galleries large r forward large r reverse small r forward for some reason, 4 links gets you filtered out so another in next post Not sure if this is a case of bad data being worse than no data, but I have it so might as well show it, instead of just sitting on it. March 15, 2026, 05:48:40 AM |
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