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Messages - Chris948

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1
26er & 27.5 (650b) / Re: BXT 24" build
« on: September 12, 2024, 07:32:18 PM »
Can the same be done on more modern 26 reba like the SL?

I have no clue. This was one clue a found a few years ago trying to understand. https://www.mtbr.com/threads/changing-travel-on-older-rockshox-reba-29-dual-air-fork.1075241/

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26er & 27.5 (650b) / Re: BXT 24" build
« on: September 12, 2024, 09:27:04 AM »
I never played with spacers but doesn’t that just affect the travel on the compressed side of the stroke, acting like a stop? What I was thinking was reducing the stroke length so that both lower and uppers could be shorter, to minimize the overall length and allowed a lower front end

It reduces the overall length. Rockshox sold the spacers years ago, it's a documented thing.

3
26er & 27.5 (650b) / Re: BXT 24" build
« on: September 12, 2024, 09:25:51 AM »
no way,  so you 3d printed a shorter spacer?  or is it a longer spacer?  would you be willing to make another and how much would you charge?  i was thinking it needed a whole new airshaft like the 29er rebas require.  could i

If you look at the pic, the stock hard rubber spacer is on the left, that shortens the fork 20mm. I added the middle spacer, that reduced the fork another 20mm.

I mean I could help you, if your air side is identical, no problem. You could save time and money and have a local library or maker space print one. I used PETG but I doubt it matters much.

These reba dual airs are pretty sweet. After reducing the length for a 24" bike, you can either shorten or remove the spacer, which I did so it's a 120mm fork for my kids 26" bike.

4
26er & 27.5 (650b) / Re: BXT 24" build
« on: September 11, 2024, 10:02:19 PM »
I wish there was some descent budget 24” fork with 50-60mm travel to lower the from some and reduce the stand over. Almost tempted to try some of the cheap Chinese options, bucklos/bolany

It's childs play on 15 year old reba dual airs. The two I bought are about 120mm, but have a spacer to reduce it to 100mm. I 3d printer another spacer to shrink them to 80mm forks. Took $2 and 1 hour.


5
26er & 27.5 (650b) / Re: BXT 24" build
« on: September 10, 2024, 10:03:57 PM »
Jeff,

Full build picture didn't seem to work, can you try again?

What did you go with for the drivetrain/crank?

Ali goldix 140mm for less than $40 are perfect for this bike.



6
26er & 27.5 (650b) / Re: Kids Size Chinese Carbon MTBs?
« on: August 10, 2024, 04:40:08 PM »
I have been looking for a 24" build for my daughter.  finally settled on going with the BXT 24er frame.  I found a Reba 26er fork and I am going with Deore brakes and drive train and some kids 140mm cranks.  for wheels I actually went with Stans Crest mk4 rims.  they are lighter and wider than what I could find elsewhere as well as slightly cheaper.  as parts come in I will post some pics.   

I would order the 127mm cranks too just to try. I know a dad who has quick kids who put like 114s on a 24" bike. I liked the fit of the 127mm and moved up to 142mm for the 26"

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26er & 27.5 (650b) / Re: Kids Size Chinese Carbon MTBs?
« on: May 02, 2024, 01:43:24 PM »
Those cruz cranks work. I used 142mm. They are extremely small Q, and especially non driver side is very close to the frame but it does fit.


8
26er & 27.5 (650b) / Re: Kids Size Chinese Carbon MTBs?
« on: April 29, 2024, 09:29:19 PM »
The bxt frame is fine, I've built two. They were as little as $220 shipped last ali 11/11 sale.

Quite a bit about them on other forums, but it's all pretty old, the frame has been out quite a while.

Old reba dual airs work great with light kids. My daughter's is like 22.5lbs.

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