Chinertown
Chinese Carbon Road Bikes => Road Bike Frames, Wheels & Components => Topic started by: Milo on May 28, 2024, 03:10:21 AM
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Hi,
Anyone own a BXT Pro 145?
(https://i.ebayimg.com/images/g/WioAAOSwVHxluSqP/s-l1200.jpg)
(https://www.bxtcycle.com/js/htmledit/kindeditor/attached/20240104/20240104174212_53144.jpg)
(https://www.bxtcycle.com/js/htmledit/kindeditor/attached/20240104/20240104174336_72049.jpg)
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There was an earlier thread about it, but I don't think anyone has gotten their hands on one...at least on this forum:
https://chinertown.com/index.php/topic,4731.msg55518.html (https://chinertown.com/index.php/topic,4731.msg55518.html)
Specs and price seems in-line with the SPCycle SP-R065, though the BXT comes with free shipping:
https://www.aliexpress.us/item/3256806415702077.html (https://www.aliexpress.us/item/3256806415702077.html)
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There was an earlier thread about it, but I don't think anyone has gotten their hands on one...at least on this forum:
https://chinertown.com/index.php/topic,4731.msg55518.html (https://chinertown.com/index.php/topic,4731.msg55518.html)
Specs and price seems in-line with the SPCycle SP-R065, though the BXT comes with free shipping:
https://www.aliexpress.us/item/3256806415702077.html (https://www.aliexpress.us/item/3256806415702077.html)
Geo is totally different between the two though. For me, the geo on the SP is much better.
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Geo is totally different between the two though. For me, the geo on the SP is much better.
In terms of weight, T47 BB and 32c tire clearance they're similar. I'm not too picky on geometry, I can adapt to most frames in my size range.
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Hi, thanks for the reply!
The SP cycle Is completely another frame.
It look like a Canyon Aeroad.
The BXT Is a mix of a Trek and a Look...
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Funny enough I am considering both (SP and BXT) base on weight, t47, 32c and low price
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Finally i decided to go for the Tideace cr0068 which looks like a more thoughtful frame design. Have a look it looks amazing
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Finally i decided to go for the Tideace cr0068 which looks like a more thoughtful frame design. Have a look it looks amazing
Are you joking or serious?
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Please explain, joking or serious?
I liked the design much better and it has the same geometry as the new canyon ultimate/aeroad
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Here's a comparison against other popular frames.
(https://pasteboard.co/PXzN1CMi4HkQ.png)
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Someone built the BXT 145. Weight and build issues in the YT comments (will need to translate).
https://youtu.be/ZmqFlPDVYlc?feature=shared (https://youtu.be/ZmqFlPDVYlc?feature=shared)
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Another BXT Pro 145 video....
https://youtu.be/chcZZwC9y2k?si=jR-cuEiKzG92YXHk
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So I've just completed a build around a BXT 145 along with Ltwoo ERX and Elitewheels Pro Disc
https://youtu.be/CKBFDc1qkv8?si=jIzrHLrD3ssPj_VG
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So I've just completed a build around a BXT 145 along with Ltwoo ERX and Elitewheels Pro Disc
https://youtu.be/CKBFDc1qkv8?si=jIzrHLrD3ssPj_VG
I recommend you add markers to your video! ;)
So what's your thoughts on the frame and what was the total weight of your build?
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So I've just completed a build around a BXT 145 along with Ltwoo ERX and Elitewheels Pro Disc
https://youtu.be/CKBFDc1qkv8?si=jIzrHLrD3ssPj_VG
Hi, what's the size of the frame?
Thanks for sharing!
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I have built Bxt 145 recently. Bought it on Ali. Size 58. Pretty heavy, but I really like the looks. Frame, bottom bracket, rear through axle, UDH, front derailleur mount bracket weighs 1,500 grams.
https://imgur.com/5X1Z2GY
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I have built Bxt 145 recently. Bought it on Ali. Size 58. Pretty heavy, but I really like the looks. Frame, bottom bracket, rear through axle, UDH, front derailleur mount bracket weighs 1,500 grams.
https://imgur.com/5X1Z2GY
What was the total weight of your build?
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Looks great Adrian - would you mind letting me know your own dimesions(!) - height, etc - looking at a 58 and wondering how it sizes up in practice.
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What was the total weight of your build?
8,9kg - Sora groupset, Tanke semi-hydraulic brakes (heavy, but have strong stopping power), one bottle cage
Looks great Adrian - would you mind letting me know your own dimesions(!) - height, etc - looking at a 58 and wondering how it sizes up in practice.
188cm, 89cm inseam. Was riding Triban RC500 XL size before. Both bikes are on bikeinsights.com so it was easy to compare geometry of those bikes.
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Hi there, from my side I did not recommend this frame. I had problems with slack on headset (too short bearrings). You are not able to proper mount front derailleur mechanic ultegra r8000 because it's rubbing against own cable armor and can not change for little gear :'( . cracking carbon around saddle post. There is no EPS moulding and from I read on forum there are better frames in that price.
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Can you post some pictures of your issues? How bad is that seatpost crack?
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I got my Pro-145 a few weeks back now. I got it in gloss black as I was intending to paint it myself.
I ordered a 58 with 120/440 handlebar - I'm 6'5" so I know I'm on the limit but geometry charts suggested it would be ok though I have a fairly large spacer stack (55mm) under the handlebar. BB to top of saddle height for me is 83cm.
I received my frame in line with agreed dates. It was well packaged and everything was present. The paint it comes with looks smooth and seems tough and durable (small knocks with tools during the build didn't scratch it).
The build was pretty smooth - the easiest 'direct from China' build I've had so far and at least as good as any more well known brands. I had no issues getting cables through the seatstays which has often been an issue with other frames I've built.
Fitting all the cables in the handlebar/steerer as a fully integrated/hidden cable build was a pain but that's normal for any bike with this design and again, the same as branded bikes I've built - essentially the price you pay for a lovely, neat looking front end.
Once built up, it looks fantastic so I was looking forward to my first ride. The only issue I had was that I had greased all the seatpost/saddle fixing parts and that seemed to slip quite easily unless done up very tight. I stripped and cleaned the seatpost and used carbon assembly compound (designed to stop slipping) and it's been rock solid since.
In terms of ride, I've built it up with Ultegra, aluminium wheels with 32mm GP5000s and straight away I was taken by how smooth it felt - I did think it might be a bit harsh given the chunky looking design and tubes but it was at least as smooth as the other bikes I have, maybe even more. It handles perfectly - no issues climbing, descending and it's nice and quiet and smooth.
One caveat is that the headset has come slightly loose the first couple of rides - I've now used some of the aforementioned carbon assembly paste so we'll see if that helps keep everything together. UPDATE - Used assembly paste on the steerer bung and the headset hasn't come loose since despite several rides on my local roads which are pretty bumpy in places.
I'm very happy - looking forward to many miles on it.
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just finished my build with full ultegra r8000 :)
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Can you comment weight on the ultegra build?
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Build my size M BXT 145 frame in glossy transparent blue with Ltwoo eRx, XMCarbonspeed aero 50/60mm wheels on 30mm tyres and managed to get the system weight down to 7,524 kg including everything mounted on the bike.
Without pedals, bottle cages, sensors or rear light (usually advertised when selling fully build bikes) its at 7,05 kg.
The build is still in a somewhat affordable range of about 3200 € total.
Pairing up the quite heavy weight of this particular frame with my choice of components is probably not the best idea when going for a lightweight build. But hey, the bike looks dope, drives nicely and is still pretty light.
An alternative for this frame would probably be the Spcycle R065 - with similar geometry (R065 has a slightly longer wheelbase) but about 250g lighter for the frameset.
In my case the BB area is slightly rubbing on the P505/P515 powermeter even with 2mm spacers applied... so keep that in mind when going for magene powermeters.
I had some issues with the seatpost slipping on the first rides. But after thoroughly cleaning the seat post itself, the clamp and the inside of the seat tube - so every contact surface upon torquing it up - that issue is fixed.
Been riding for about 3000 km now and there is nothing to complain about.
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here a pic before swapping the handlebar (currently running the cheap AE Kocevlo version on here to test 360x110mm)
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Hello.
I just bought this frame but the inside of the fork is terrible.
I can´t even run the brake cable.
I´m chatting with the seller to give me a solution and I will let you know.
Here are some pics.
Pd: I have a Velobuilt TT-023 and the fork had very simmilar issues. Maybe there is a problem with the mould desing?
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I have built Bxt 145 recently. Bought it on Ali. Size 58. Pretty heavy, but I really like the looks. Frame, bottom bracket, rear through axle, UDH, front derailleur mount bracket weighs 1,500 grams.
https://imgur.com/5X1Z2GY
Nice looking bike Adrian
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just finished my build with full ultegra r8000 :)
How much extra was the paint job?
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Another BXT Pro 145 video....
https://youtu.be/chcZZwC9y2k?si=jR-cuEiKzG92YXHk
Holy crap, hahahahaha, did he make the video on a garbage dump???? Bike is nice, but surrounding looks like crap, hahahaaha
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Made some additional quality of life and - obviously ;D - weight saving adjustments which all relate to the original frame accessories supplied by BXT.
Keep in mind that some of these changes might compromise your ride experience and could also lead to safety concerns especially for heavier riders. In case of the exact products I've installed, I did not experience any alarming sign of instability, cracks or excessive flexing (At a rider's weight below 75kg with some peak sprints over 1000W or 1-minute intervals at 400-500W riding out of the saddle done as testing within the last ~1000km)
In order to sum up the potential weight saving probabilities I listed the original+new weight of the following components:
- 15g: BXT frame to handlebar top cap 25g swapped for a 9,5g 3d printed (probably carbon fiber reinforced nylon) version delivered with the imtos bike integrated handlebar
- 31g: BXT expander plug 38g swapped for a small 7g version
- 52g: BXT thru axles 86g (M12*P1.5mm, TL 17mm, 119,5mm front, 163,5mm rear) swapped for 34g lightweight AL-7075 axles 117mm front, 161mm rear (which due to the shorter length only screw in for 3-4 revolutions compared to about 5-6 revs on the or. ones - which for me personally is not concerning since the actual load is on the frame dropouts and the hub cups themselves, not the thru axle holding the hub in place. Just keep in mind to not overtighten them and always use a torque wrench/be careful screwing them in when fixing a flat tire on a rideout)
- 64g: BXT seat post 189g (only carbon part) with BXT saddle clamp 68g (metal parts) modified to fit a lighter more flexible clamping system which included cutting the top part of the or. seat post and drilling/milling out some holes for the new bolts/screws with a weight of 156g (carbon part) and 37g (metal parts) I mainly modified this because I really disliked the inflexibility of the original clamping system in terms of adjustment options. I had to tighten it well above 10 nm to avoid the saddle tilting front- or backwards when either applying power in a seated position or when sitting upright to take a drink. To readjust the angle it wasn't enough to just losen the bolt - no! The metal parts always wedged themselves into the carbon part of the seat post and in most cases I had to use a hammer to unstuck the saddle clamp. Slightly adjusting the saddle angle or the offset was equally hard since the same issue occurred. With this new system I can freely adjust the saddle angle or offset with two separate bolts and have not had any problems with any unwanted movement so far. Before cutting/drilling in the carbon part I was slightly concerned about creating a structural weak point when removing material. But since the seat post is manufactured in a pretty chunky way, there is more than enough material left to withstand the significantly lower forces with my new setup. I only need to tighten the bolts to 5-6 nm each to get a perfectly secure fit.
Overall I'm now down to 6.8 kg (no pedals, cages, light/GPS mounts but including the spindle powermeter) or 7,45 kg with everything mounted (even radar light, bike computer, speed sensor and aero bottles included)