Riro 24mm axle carbon crankset

[pavlo.k]

Does anyone have experience with Riro carbon crankset with 24mm aluminium axle?
https://www.aliexpress.com/item/1005007344893638.html

Thinking about getting one on for my new build. The frame has bb86 bb shell and I don't really want to go for a dub crank.
Was looking around for some lighter 24mm axle cranks and could only find this Riro crank and a raceworks one.
Any feedback on how those axles hold up?

[TidyDinosaur]

I have three of them in use. They all are fine. You will probably have to experiment with BB's. I had a Ali BB in my BSA frame and it was too wide. The Shimano BSA BB's are a little narrower and those do fit.

[waltini]

Does anyone have experience with Riro carbon crankset with 24mm aluminium axle?
https://www.aliexpress.com/item/1005007344893638.html

Thinking about getting one on for my new build. The frame has bb86 bb shell and I don't really want to go for a dub crank.
Was looking around for some lighter 24mm axle cranks and could only find this Riro crank and a raceworks one.
Any feedback on how those axles hold up?

Hey mate, I have a Riro at the 50/34 chainring. Has around 500km on it so far, so I cant comment on longevity. No issues installing, I do have a T47-79BB.

[jonathanf2]

I have three of them in use. They all are fine. You will probably have to experiment with BB's. I had a Ali BB in my BSA frame and it was too wide. The Shimano BSA BB's are a little narrower and those do fit.

I'm using 3 Riro/Racework cranksets as well. No issue with the 24mm alloy axle and I use these cranks on two road bikes and a gravel bike. Though the same issues with BB size is a concern. If the BB is too wide, it won't fit properly. I had to switch back to the Shimano BBR60 threaded BB and BBR72 PF BBs to have them fit across my different frames.

[pavlo.k]

I'm using 3 Riro/Racework cranksets as well. No issue with the 24mm alloy axle and I use these cranks on two road bikes and a gravel bike. Though the same issues with BB size is a concern. If the BB is too wide, it won't fit properly. I had to switch back to the Shimano BBR60 threaded BB and BBR72 PF BBs to have them fit across my different frames.

how wide is too wide? I'm planning to use a token bb86 thread together bb. It's probably same width as a shimano pressfit bb86 bottom bracket.

[TidyDinosaur]

how wide is too wide? I'm planning to use a token bb86 thread together bb. It's probably same width as a shimano pressfit bb86 bottom bracket.

Damn, I just took apart the crank on my gravel bike yesterday. Had I seen your post before that I would have measured.
The difference is only about 1mm, but with the wider BB the bearings will seize when tightening the bolt before it is tight enough.

[mcav]

they're fine. the only caveat is that it doesn't come with any indication of the bolt torque, which is not much. I ended up stripping it but I found a way to replace it

[pavlo.k]

they're fine. the only caveat is that it doesn't come with any indication of the bolt torque, which is not much. I ended up stripping it but I found a way to replace it

that's weird. This type of crank mount usually requires 35-40nm of torque.

[pavlo.k]

Ordered the crankset on 11.11, paid 75$ and already received it just a week later.
Looks very good, super light as well. Too bad they only come in a single crank length but hey, hard to complain considering the price. Mine has torque spec printed on the crankarm bolt which is 35-40nm.
A bit concerned about the alu axle but there's only one way to find out if it holds up.
I also replaced the original full contact bb bearings in my token ninja bb with  25mm internal diameter bearings and installed plastic dust caps like on the shimano bbs to minimize the potential wear on the axle,

weight on the picture is with 52-36 chanrings

[Icyseanfitz]

Have this on the way as well, just seeing the discussion around bbs, will a standard 24mm BB work on this?

[jonathanf2]

Have this on the way as well, just seeing the discussion around bbs, will a standard 24mm BB work on this?

I've had success using the Ultegra Shimano BBR60 threaded BB and SM-BB72-41B pressfit BB. Though I've had the Riro crankset seize up on a Kactus ceramic threaded BB and ZTTO pressfit threaded BB. So I'm presuming it depends on the bearings/cup width in the BB.

[pavlo.k]

I installed these cranks today and I think I know the reason they were seizing up for some people. Its because of the flawed preload ring desing(the one on the non drive side). Its too wide so when I tried to preload the bearings with it, it was contacting the bb shell instead of the bearings effectively seizing up the crank.I've put a 0.5mm pastic spacer betweet the preload ring and the bb so that this spacer is pushing on the bearings when I adjust the preload. I use BB92 pressfit bb.

[Ludo]

That’s for the MTB version, right?

[Ludo]

Ordered the crankset on 11.11, paid 75$ and already received it just a week later.
Looks very good, super light as well. Too bad they only come in a single crank length but hey, hard to complain considering the price. Mine has torque spec printed on the crankarm bolt which is 35-40nm.
A bit concerned about the alu axle but there's only one way to find out if it holds up.
I also replaced the original full contact bb bearings in my token ninja bb with  25mm internal diameter bearings and installed plastic dust caps like on the shimano bbs to minimize the potential wear on the axle,

weight on the picture is with 52-36 chanrings

Who did you buy from to get that price?!

[ldavies]

There's a reason that Shimano 24mm axles are made of steel.  They are just not strong enough.  Dub axles at 29mm can be aluminum but of course they are much bigger and therefore stronger.