Chinertown
Chinese Carbon Road Bikes => Road Bike Frames, Wheels & Components => Topic started by: BeR on February 18, 2025, 02:21:25 AM
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https://a.aliexpress.com/_EGI0EHe
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https://a.aliexpress.com/_EGI0EHe
Looks nice. Would appreciate at least 32c tire clearance though.
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Weight 680g is amazing, but I also looking for 32c tyre clearance
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What well known frame would this be comparable to? Doesn't look full aero. Weight is climbing-material, but looks more aero than (for example) an aethos. Curious about normal-size weight :)
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Looks like a nice frame. The reach is a little long for my taste...
And looks like the era of cheap TFSA frames has come to an end... :(
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Looks like a nice frame. The reach is a little long for my taste...
And looks like the era of cheap TFSA frames has come to an end... :(
Yes, over 1000€ is a lot of money for an AliExpress frame
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Yes, over 1000€ is a lot of money for an AliExpress frame
Prices of their frames do fluctuate A LOT, so maybe we're at a peak now and they will get better...
When I first saw this post I kinda got tempted, but when I saw the price the temptation quickly went away 8)
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Added this frame to geometrygeeks: https://geometrygeeks.bike/bike/tfsa-jh-35-2025/
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Yes, over 1000€ is a lot of money for an AliExpress frame
Can't even see how one can justify such value
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Can't even see how one can justify such value
Yeah, the geometry looks nearly identical to the SP-R088 but double the price.
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looks very close to Sp088 but less aero and with more round shape tubes.
I prefer te TFSA over Sp008, it's "cleaner" (I love climb shape)
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looks very close to Sp088 but less aero and with more round shape tubes.
I prefer te TFSA over Sp008, it's "cleaner" (I love climb shape)
SP-R008 has a proprietary seatpost, this has a good old 27.2
I really like this frame.... $1K is OK for the specs, top of what I would pay for a Chinese frame. Problems for me are I'm right in the middle of M & L, and I just finished a road build :(
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I discovered TFSA is well-loved in China. They're the bang-for-buck bike brand over there. I've seen full bike builds of the JH-35 weighing in at the mid 6.5kg range with full pedals/cages/computer mount.
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Pricing is super high vs the rest of their offering
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Looks nice. Would appreciate at least 32c tire clearance though.
Agree, max 30 mm is almost a dealbreaker now a days
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Why would you want big balloon 32s on such a light frame? Seems contradictory
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Why would you want big balloon 32s on such a light frame? Seems contradictory
Because they are faster and more comfortable?
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I'm running 25c tubeless. Less weight, accelerates faster especially uphill and still absorbs a lot of road chatter. For a lightweight road frame, 30c max tires is plenty.
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I'm running 25c tubeless. Less weight, accelerates faster especially uphill and still absorbs a lot of road chatter. For a lightweight road frame, 30c max tires is plenty.
I guess it all depends on your weight also... For us lightweight riders on wide rims 28mm might be plenty... But when you are 100kg things might be different.
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I guess it all depends on your weight also... For us lightweight riders on wide rims 28mm might be plenty... But when you are 100kg things might be different.
If I weighed 100kg, I'd be scared to ride a 700g bike frame! ;D
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Because they are faster and more comfortable?
They either have less rolling resistance or more comfort, not both at the same time.
https://www.bicyclerollingresistance.com/specials/grand-prix-5000-comparison
And in my experience, albeit clouded by frame material etc, the road comfort going from even a 28c road bike to a 42c gravel bike is marginal. We're still talking about zero suspension frames and bumps being handled by a few mm of tire. Narrower tires are lighter and more aero. I think for decent roads 28c is the sweet spot. 32c makes sense more for flat insurance than comfort IMO. I have 28c and 32c on some of my bikes and don't feel a huge comfort difference.
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They either have less rolling resistance or more comfort, not both at the same time.
https://www.bicyclerollingresistance.com/specials/grand-prix-5000-comparison
And in my experience, albeit clouded by frame material etc, the road comfort going from even a 28c road bike to a 42c gravel bike is marginal. We're still talking about zero suspension frames and bumps being handled by a few mm of tire. Narrower tires are lighter and more aero. I think for decent roads 28c is the sweet spot. 32c makes sense more for flat insurance than comfort IMO. I have 28c and 32c on some of my bikes and don't feel a huge comfort difference.
The link you showed clearly states that the rolling resistance goes down as tire size goes up, and we know that wide tires are more comfortable because you can run lower pressures and have the same air volume in the tire. Whether you feel that difference is up to you, but the physics doesn't lie. Wider tires have less rolling resistance and are more comfortable.
Now, it's possible that after a certain size we start losing speed again, but 32s aren't that size (NorCal Cycling tested 28, 32 and 34 and found that the 34s were slightly slower than 32s, they were on par with 28s, with the 32s being the fastest https://www.youtube.com/watch?v=GTKjdTBCw58).
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The link you showed clearly states that the rolling resistance goes down as tire size goes up, and we know that wide tires are more comfortable because you can run lower pressures and have the same air volume in the tire. Whether you feel that difference is up to you, but the physics doesn't lie. Wider tires have less rolling resistance and are more comfortable.
Now, it's possible that after a certain size we start losing speed again, but 32s aren't that size (NorCal Cycling tested 28, 32 and 34 and found that the 34s were slightly slower than 32s, they were on par with 28s, with the 32s being the fastest https://www.youtube.com/watch?v=GTKjdTBCw58).
Yes, RR goes down as tire size goes up if you keep the pressure the same. Nobody is running 32cs at 100psi. You buy bigger tires to run lower pressures, which the link shows makes RR worse at recommended pressures and about equal for equal comfort. So by extension, to actually improve on comfort from a smaller tire you are getting more RR. Along with more weight and aero drag at any pressure setting.
Plus in my experience the comfort improvement isn't huge, or at least not big enough to warrant the sluggish feel and losses. There aren't many wheel choices to get a 32c tire to hit the 105% rule for example. They straight up balloon on the 29-31mm wide wheels I have.
Im not saying people shouldnt buy 32c etc, do whatever you want........ just saying to temper expectations and have a full understanding of the costs and benefits.
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Maybe you are gonna build it up with 25-28c tyres now for a light weight climbing build, that's fine, but if I were to buy a new frame in 2025 I would like the opportunity to go wider than 30 mm in the future, even if I build it up narrower now. As rims are getting wider to, you also risk that even the stated 30c max width is getting problematic with a 30c tyre on a 25 mm internal rim width, and I don't see what you lose with a 28 mm tyre on a frame that max out on 32 and not 30 mm, so why limit the frame to max 30 mm?
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I think TFSA might be very conservative with that max size. I have the SL6 clone (JH-19) that has a max of 28mm according to TFSA and can easily fit 32mm tires.
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Maybe you are gonna build it up with 25-28c tyres now for a light weight climbing build, that's fine, but if I were to buy a new frame in 2025 I would like the opportunity to go wider than 30 mm in the future, even if I build it up narrower now. As rims are getting wider to, you also risk that even the stated 30c max width is getting problematic with a 30c tyre on a 25 mm internal rim width, and I don't see what you lose with a 28 mm tyre on a frame that max out on 32 and not 30 mm, so why limit the frame to max 30 mm?
I agree it doesn't hurt to have slightly wider tire clearance. Even my latest bike build has 32c max clearance, despite running only 25c tires on that bike. I think what gets overlooked is that wider tire clearance also opens up these frames as lightweight endurance bikes.
On another topic, I'm surprised no one has mentioned the built in camera/light fixture on the seat post! I run my lights all the time for safety reason. Having that mount in place would be very convenient for me. :)
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Maybe you are gonna build it up with 25-28c tyres now for a light weight climbing build, that's fine, but if I were to buy a new frame in 2025 I would like the opportunity to go wider than 30 mm in the future, even if I build it up narrower now. As rims are getting wider to, you also risk that even the stated 30c max width is getting problematic with a 30c tyre on a 25 mm internal rim width, and I don't see what you lose with a 28 mm tyre on a frame that max out on 32 and not 30 mm, so why limit the frame to max 30 mm?
I mean I already tried 32c and didn't feel like it was worth it over 28c...... for road bikes not sure why that would change, and if it does it will be far ahead enough in the future to change frames anyway.
The issue with a frame like this is more clearance = longer forks/stays = more weight. Which comes back to my original point. If someone is willing to run 32s, there are probably better frames available for them, since weight doesn't seem to be a priority.
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They either have less rolling resistance or more comfort, not both at the same time.
https://www.bicyclerollingresistance.com/specials/grand-prix-5000-comparison
And in my experience, albeit clouded by frame material etc, the road comfort going from even a 28c road bike to a 42c gravel bike is marginal. We're still talking about zero suspension frames and bumps being handled by a few mm of tire. Narrower tires are lighter and more aero. I think for decent roads 28c is the sweet spot. 32c makes sense more for flat insurance than comfort IMO. I have 28c and 32c on some of my bikes and don't feel a huge comfort difference.
Weight difference between 28mm tyres and 32mm tyres are literally 100% irrelevant.
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Is there any translator :
https://m.bilibili.com/video/BV1GSAoemEmf
;D
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Weight difference between 28mm tyres and 32mm tyres are literally 100% irrelevant.
No, it's actually massive. given the excitement around light frames and the "oooo, that new one weighs 150g less, i should upgrade my frame", 28C vs 32C is a big deal weight wise. Technically, you also accelerate faster with a 28C, so if you're out of the saddle a lot and doing mostly punchy climbs, then light wheels feel nicer. I wrote FEEL nicer, as in reality, you probably wont be any faster. I did efforts on a climb with a 6kg bike vs my OEM disc bike and the light one felt i was superman. Result: no difference in time.
Last batch i measured, 228g vs 296g. One pair makes it a 136g difference. It's the difference between a frame from 3y ago and a frame today.
Why would you want big balloon 32s on such a light frame? Seems contradictory
In the mountains where i spend my summers, there are roads that are "dirty". Early in the season, they havent been cleaned, and there's loose gravel from the snow/ice wreaking havoc on asphalt. During the season, there's rain, and in the forest you can get all sorts of debris. Late in the season, you can have asphalt roads turn into gravel from massive mud runoffs, branches and all sorts of shit.
Basically on main roads, early in the season, wider is safer; on secondary roads, the kind of roads you want to do most of your riding because nobody likes traffic, wider is safer 100% of the time.
There's also less risk of puncture.
And what if you want to take the bike up vineyards and "tertiary" roads, ie roads that are barely roads? In Switzerland, between rows of vine, the access roads are often made with slabs on concrete put next to each other. With wide tyres, you dont care. With narrower ones, you do.
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There now is another shop, shipping from europe:
https://www.aliexpress.com/item/1005008701728415.html
Price difference (including shipping) is significant (for europeans):
~ 867€ (from poland)
~ 1243€ (from china) https://www.aliexpress.com/item/1005008505241314.html
Not sure, if or how this shop is linked to TFSA. The original post's store (china warehouse) seems to be the official one (Huzhyi-TFSA Store). Or at least it's tagged on this instagram page: https://www.instagram.com/tfsabike.cn/
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There now is another shop, shipping from europe:
https://www.aliexpress.com/item/1005008701728415.html
Price difference (including shipping) is significant (for europeans):
~ 867€ (from poland)
~ 1243€ (from china) https://www.aliexpress.com/item/1005008505241314.html
Not sure, if or how this shop is linked to TFSA. The original post's store (china warehouse) seems to be the official one (Huzhyi-TFSA Store). Or at least it's tagged on this instagram page: https://www.instagram.com/tfsabike.cn/
I have a mixed feeling about this store :
1) Does it really send from Europe ?
2) 99% comments are written in english (even french comments ;))
3) The store was created on march
4) All reviews (219) except two or three are 5 stars.