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Re: Tavelo Aero Frame
What makes you so sure? I live in and race(not professionally) in china and i think otherwise. Sure, they often are not as popular as internationally known brands but they definitely have a larger following than internationally. most of the top chinese professional teams are sponsored by chinese brands and a lot of the brands discussed on this forum actually sponsor a team I went to hangzhou for a race last month(unfortunately cancelled last minute due to rain) and saw a few people tavelo frames being ridden May 05, 2024, 07:46:50 PM |
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Re: Yuanan Carbon fiber wheelsets Year end discount promotion
Perfect, love talking about rim design. My ideal wheelset: Let start with the general shape of the rim profiles. Elilptical like the scope rims in the attachment. This is critical in the front rim. This profile provides a great balance of speed and stability and is used by dt swiss/swiss side who make very fast wheels as well as specialised on their very fast roval rapide clx II, though scope claim theirs are even faster. The idea is that the cross section of the tire and rim combined forms an ellipse. It works well both when the airflow hits it for the first time and the tire is the leading edge and rim the trailing edge and when it hits it a second time when the rim is the leading edge and the tire the trailing edge. A V shape does the first well, but absolutelly terrible at the second. Hubs and spokes: Obviously deep aero carbon spokes. The hub interface should be something similar to farsports, scope, crw, etc. Basically replicating a regular straight pull hub but with carbon spokes. This is safer because the spokes wont pop out in case of rapid tension loss, lighter and smaller so more aero. H-works make great hubs like these and aparently dt swiss are moving into this area as well. The spoke to rim interface should have an external nipple like the new superteam wheels, so its possible to true the wheel from the outside with a mounted tire. This makes servicing easier and allows you to true more accurately. It also means you don't need spoke access holes in the rim bed so no need for rim tape. Ideally you would have as much of the nipple still hidden, showing just enough to be able to work on them. Front wheel: 50-55 mm deep, from the development white papers I've seen, 50 mm is around when a wheel can start taking advantage of the sailing effect at higher yaws. 21-22 mm internal width and 30-31 mm external width at the rim edge. That way you can put 25 or 28c tires on without them balooning beyond their labeled size and they will stay narrower than the rim giving the best chance to form the aforementioned ellipse. As low a spoke count as is feasible to reduce weight and improve aerodynamics. Stiffness isn't as critical in the front as it is in the back. Rear wheel: 60-70 mm deep, 24mm internal width and 34-35 mm external width. This one is way wider because the air is so messed up by the time it gets to the rear tire that width matters a lot less for aerodynamics as their biggest impact is when providing a sailing thrust effect in crosswinds. Therefore we can mount a wider tire for improved comfort, rolling resistance and puncture protection. Elliptical shape is probably still ideal but less critical as the first time air will hit the tire is at the seat tube where airflow is all kinds of messed up, so optimising the design for when the air hits it the second time could be more beneficial. Tire should still be notably narrower than the rim. Spoke count should be higher, probably 20-24 spokes. Ratchet hubs with dt swiss compatible internals. Obviously everything should be as light as possible  Edit: also no wavy rims, their only benefit is better cross wind stability by reducing the stall angle of the wheel i.e. the airflow is so messed up that it doesn't even push the rim anymore, meaning you lose the sailing effect. This is unneccessay with good eliptical profiles because they can enable the flow to have a smooth transition from one side to the other. May 07, 2024, 05:30:07 AM |
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Re: Tavelo Aero Frame
The 3rd video of China Cycling on the Shanghai show says that Tavelo is a very frothy brand in China, with a huge social media following, sponsored teams and so on. So that must command a significant price premium, even if that's completely invisible to the west.
May 07, 2024, 10:18:53 AM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
So, my build is done. May 07, 2024, 10:33:51 AM |
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Re: Velobuild VB-R-218
Got some new shoes for the purple bike. I asked the seller to ship without PCW branding but these are what showed up. I will likely remove the decals eventually.
May 08, 2024, 09:33:23 AM |
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Re: Magene QED 12spd groupset showcased in Shanghai
Here
May 08, 2024, 09:59:41 AM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
Looks very nice Thank you. The complete process of ordering with specifying paint, parts, and building has been a no issue (and pleasant) adventure so far. Some really minor things are; Tracking of the frame, a notice of a booked parcel and then nothing for 20days, and the last 1-2 days were packed with updates. Not a product quality issue. Next minor notice, and im being quite picky now, is that the rear axle threads in place somewhat with resistance. Hunch is that derallieur hanger and axle thread tolerances are not the same as the carbon parts. To be honest, those are just small farts in a storm as comparison. Did a initial 60min ride and pushed it a bit. Im about 82-84kgs, Pmax of 1300w roughly on a super light frame, size 56 and my reaction is undisputed happiness. Frame feels stiff and as per geometry of frame, right on target. For a safety check of handlebar + stem check, I hanged my whole body wheight on the drops and jumped/rocked up and down. Solid as can be. To summorize so far, _really_ satisfied. May 08, 2024, 01:45:27 PM |
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Re: Magene QED 12spd groupset showcased in Shanghai
What's the difference between the QED chainrings, and the optional chainrings supplied with the PES? I'm trying to understand by Magene's QED video. As a follow-up: The QED crankset was launched in 3 versions. 1) A standalone crankset with the integrated chainrings, no PM, 2) crankset with the beloved spider-based PM and bolt on chainrings--the exact same PM and rings as on the PES, and 3) with integrated chainrings and Stages/4iii-style P325-model PM in the crankarms, dubbed the "QED P325". You can watch my unboxing on the P325 model video here: https://www.youtube.com/watch?v=mt1B119gEiA&t=157s&pp=ygUKbWFnZW5lIHFlZA%3D%3D May 08, 2024, 03:17:44 PM |
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Re: Tavelo Aero Frame
Actually I must apologise, I misunderstood what tavelo is and can understand their prices now. They're not a bike company, they're a marketing company selling bikes, it's like specialized on steroids. They charge this much because they can. At the end of the day it doesn't matter what the value proposition product is if it sells.I think this is overly cynical. Ultimately, all carbon road bikes are luxury goods. Even the cheapest Tiagra build. So there is some form of "value", but it's not the typical add up all the components on a spreadsheet and divide by $. A lot of it is intangible. The big selling point for Western brands IMO is pro Peleton credibility. If your bike is in the TdF or other big pro races, it's legit and the sky is the limit on pricing. Unless I'm mistaken, that's exactly how Giant and Canyon went from run of the mill OEMs to premium bike sellers. In fact the only big Western brand I can think of that isn't in the pro circuit is Factor. So IMO all brands like SEKA and Tavelo need to do to legitimize their brands is get in the pro circuit. They don't even have to be that good. Personally IDGAF about pro cycling nor would I pay more for a bike on TV. But someone could easily come up with reasons why even a cheap Aliexpress build is a waste of money. May 10, 2024, 10:45:34 AM |
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Re: Tavelo Aero Frame
Current Fleet - This is abhorrentSomeone buy this man a bigger garage May 10, 2024, 03:14:48 PM |
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