Chinertown
Chinese Carbon Road Bikes => Road Bike Frames, Wheels & Components => Topic started by: rsw42 on May 28, 2025, 11:45:10 AM
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Hi everyone,
In this other thread (https://chinertown.com/index.php/topic,4173.0.html) an aero frameset with high stack, low reach was requested and Peter delivered. It seems like I've got the first one so here's the facts:
Size 56
Unpainted
Parts delivered: frame, fork, seapost, mounting hardware (2 different) for saddle, UDH hanger, front mech hanger, thru axles, grommets
Weights on the pictures include mech hanger (front and rear)
Thoughts: looks extremely well made. Seapost looks a little thin for my liking, would have preferred 27,2 - but aero...
Planned components:
Wheels: Ninevelo GV45
Updates:
Paint Cerakote with Gun Candy effect clears ("Kraken" for the Frame, "Mako" for fork and seatpost)
Tires: Vittoria Corsa in 34 since I'm not planning on going tubeless and the GP 5000 only comes in 35 as AS TR
Headset and stern: Ritchey Switch
Handlebars: Easton EA90AX - 42
Chainset JKT 150mm
Groupset and breaks: GRX 1x11
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Pictures of weights
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More pics... Questions?
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How much did you pay with shipping ? Thanks for the pics
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How much did you pay with shipping ? Thanks for the pics
USD 1009 without paint Inc shipping, customs and taxes.. Price was really well for me since exchange rate in euros where in my favor die to US tariff chaos
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will you be painting the frameset yourself?
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Damn he quoted me 1350...... I was ok but if others are getting 300+ off, im out.
....and my quote was without shipping..... what's up with that?
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Damn he quoted me 1350...... I was ok but if others are getting 300+ off, im out.
....and my quote was without shipping..... what's up with that?
Mine is without paint and without handlebar. I've got quoted 1350 with paint and handlebar as well
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will you be painting the frameset yourself?
It's either gonna be painted or coated with cerakote...
I've already had a friend who's a painter lined up with everything... Since I can't reach him for a week now (and I'm not in s hurry anymore due to injury)... A bit undecided...
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I have some nitpicks, as always, but for what it is, this is a pretty alright design. Although I will probably always be a T47 hater
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Why the hate for T47 may I ask sir ?
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T47-68 is pointless, it does nothing better than BSA, is heavier and less aero. T47-86 moves the bearings inboard, which is better from an aero and load path standpoint, but the former is kinda meaningless for the forces a human can produce. It comes with the downside of interfering with the mounting of some power meter spiders and the spline flanges have to be tiny which worsens tool engagement. Also since the splines on it run all the way through the flange, it's easier to scratch the frame with the tool during installation. T47-77 is just the advantages and disadvantages of each on their respective sides. All still heavier than BSA.
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It comes with the downside of interfering with the mounting of some power meter spiders and the spline flanges have to be tiny which worsens tool engagement. Also since the splines on it run all the way through the flange, it's easier to scratch the frame with the tool during installation. T47-77 is just the advantages and disadvantages of each on their respective sides. All still heavier than BSA.
I am also a T47 hater for these reasons as well. And no problems ever running BB86 either. Whether Shimano 24 or even DUB standard.
Folks shy away from press fit, but a proper bearing tool always gets the job done.
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T47 is not supposed to use 6806 bearings instead of 6805 for BSA which is usefull for SRAM Dub.
Bigger bearings = Long lasting.
Edit : 47 instead of 57, typo error.
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I think you may have had an accident while typing that sentence, but you can get a BSA BB with 6806 no problem
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There are several advantages to internal routing, additional design flexibility with asymmetric designs, etc, which makes T47 attractive. I think the benefits created by having a larger tube are mainly limited to the construction of metal frames and lugged carbon, which is where the T47 originated. It's just a threaded version of PF30.
IME, the bearing size stuff is marginal to the point of being nonsense if the bearing is well sealed. Most people in shops seem to believe that SRAM-branded dub BBs have great longevity, and those that use tiny bearings. Those opposed either claim that they are wearing through a lot of BBs, regardless of size (i.e., something is wrong with the bike or the installer), or are just discussing theory. Long-winded way of saying that the BB standard used wouldn't prevent me from buying a frame.
That said, if you made me king for a day, I would decree that all bikes use T47 or some variant thereof to get us down to 2 types of cups, 1 standard bearing size, and a bunch of reducers. I am not really opposed to BSA either, but realistically, the weight difference is marginal. It's around 20g in a carbon frame, including the BB, and about 50g on a Ti frame.
This XMcarbonspeed frame looks excellent IMO. Geo isn't my cup of tea; nevertheless, I'm looking forward to seeing it built up.
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Looks very nice, thank you for posting!
Could you please add a few pictures of the inside of the frame? Curious to see the weave around the BB & headset.
Also, would you mind adding a few pics of the downtube, the side facing the wind? And the headtube? Curious to play Jesse Coyle to assess aero-nessitude :D
Sorry to hear about your leg, hope you'll be back riding a bike soon!
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Bigger bearings = Long lasting.
Yet on 2 bikes with less than 1000 kms on either I had to replace both T47 SRAM DUB BBs both for chewing up bearings. To be fair one was on a gravel bike (internal bearing) that not treated very nicely. The road bike (external bearing) developed a rough spot that did go away when washing out the NDS bearing - I still changed it out though. Moral of story - buy quality bearings if T47 is a MUST. FWIW
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Yet on 2 bikes with less than 1000 kms on either I had to replace both T47 SRAM DUB BBs both for chewing up bearings. To be fair one was on a gravel bike (internal bearing) that not treated very nicely. The road bike (external bearing) developed a rough spot that did go away when washing out the NDS bearing - I still changed it out though. Moral of story - buy quality bearings if T47 is a MUST. FWIW
As I mentioned in CS-R01 thread, avoid SRAM BBs entirely. Since they introduced DUB standard all bearings are exactly same tiny bearings regardless of BB shell. They wear out super quickly if you ride anything that is always dry and not dusty. Consider them only if you are not particularly strong or heavy rider, as they start to deform at power output of ~250W.
In general, I recommend NOT to use DUB/30MM axle in anything smaller than BB30 BB shell
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They wear out super quickly if you ride anything that is always dry and not dusty.
Consider them only if you are not particularly strong or heavy rider, as they start to deform at power output of ~250W.
In general, I recommend NOT to use DUB/30MM axle in anything smaller than BB30 BB shell
"They wear out super quickly if you ride anything that is always dry and not dusty." - I had the opposite experience, in the wet they wore out faster.
"In general, I recommend NOT to use DUB/30MM axle in anything smaller than BB30 BB shell" - I would even argue that DUB should be avoided altogether unless a person plans on using top quality bearings.
"Consider them only if you are not particularly strong or heavy rider, as they start to deform at power output of ~250W." - From personal experience I def agree with this. I had a SuperSix from 2014-2018 (BB30 using a Shimano DA crank) that went through MANY sets of bearings until I installed a Praxis BB and now the same experience with two T47. Even still, at 1100W sprint I can hear and feel a creak and 2 days ago a 60 mile zone 2 gravel ride it was dead silent the whole time.
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"They wear out super quickly if you ride anything that is always dry and not dusty." - I had the opposite experience, in the wet they wore out faster.
Oh well, I meant "unless you ride...". Should have checked what I wrote ::)
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So here are some pictures of the head tube... I'm really not good on taking these pictures - any advice how to take them will be welcome
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BB Area...
And a little update on the build... will be coated with cerakote and gun candy chameleon effect thingy... but will take some weeks...
Groupset: GRX 1x11
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BB Area...
And a little update on the build... will be coated with cerakote and gun candy chameleon effect thingy... but will take some weeks...
Groupset: GRX 1x11
I wish they still made the exterior in a 'weave' Everyone seems to be making their frames UD carbon. Probably saves weight I suppose.