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Messages - Charmander21

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Component Deals & Selection / Re: New(?) Riro Carbon Cranks anyone? ("Leese"?)
« on: December 06, 2024, 10:03:49 AM »
Quote from: impmonkey on December 06, 2024, 08:18:46 AM

They had them in stock right before the 11/11 sale, but they sold out quickly once the sale started. I was tempted by the three bolt as that is the interface of my magene PM.


Looks like these are available again: https://aliexpi.com/Rwc1

as well as full chainrings: https://aliexpi.com/YL57

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Component Deals & Selection / Re: New(?) Riro Carbon Cranks anyone? ("Leese"?)
« on: December 05, 2024, 05:18:06 AM »
Just a quick update: I ended up purchasing a 'genuine' sram dub BB, I'd read somewhere about a sram rep saying that dub cranks should only be used with their own BB's. Sure, that sounds like marketing BS but I thought I'd give it a go anyhow, and to my surprise the cranks fit perfectly now with zero play. There's also no need for any additional spacers (aside from the 2mm 'road' spacer on the right side and the preload adjustment ring on the left) as the BB protudes slightly further outside the frame.

One other benefit is the plastic covers on the inner bearing races, that may help protect the aluminium spindle from wear.

the other two BB's that did have play were a Prime BB and a Z-Race BB that I purchased from Ali.

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Component Deals & Selection / Re: New(?) Riro Carbon Cranks anyone? ("Leese"?)
« on: December 05, 2024, 05:12:44 AM »
Quote from: zxcvbnmjm on December 03, 2024, 10:52:52 PM
The manufacturer for LEESE actually made more versions of the spindle that take sram 3 bolt, 8 bolt and easton chainrings but they dont seem to be for sale on aliexpress nor taobao.

Theyre visible in this ali listing but they're unavailable. same with on their taobao listing

That is interesting, I would prefer the 3 bolt GXP connection for the chainrings, it's pretty universal on Ali and easy to get hold of spare chainrings. That said, perhaps this will become more popular? Though aparrently this 'sandwich' mechanism is quite hard to manufacture. You can see a discussion of this in reference to the Rotor Aldhu cranks here:



It's worth mentioning that there are 5 bolt 110 and 130 bcd spiders for these cranks, as well as the 4 bolt shimano compatible ones that Leese is selling. Just a pity that no sellers seem to have these parts available to purchase without buying the crankset as well.

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Component Deals & Selection / Re: New(?) Riro Carbon Cranks anyone? ("Leese"?)
« on: November 30, 2024, 01:04:21 PM »
Quote from: Sebastian on November 30, 2024, 12:22:49 PM
You could probably try Loctite bearing retaining which not only keeps the axle in place but is also designed to fill any inconsistency in fitment. I’ve successfully glued in bottom brackets in pretty oversized bottom bracket shells like that. But I’ve never used it on crank spindles. But it could be worth a shot if there’s no other option.

That’s an interesting suggestion. I bought these off AiExpress ‘choice’ and so I’m able to send them back for a full refund, postage paid. So will probably do that. I may order a new pair from another seller.

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Component Deals & Selection / Re: New(?) Riro Carbon Cranks anyone? ("Leese"?)
« on: November 30, 2024, 10:37:16 AM »
Yes I am 100% Sure. I purchased both bottom brackets myself, they are both DUB bottom brackets. If they were BB30, there would be about 1mm of play which is massive, and the crank would be incredibly loose. This is much much smaller, but ultimately there should be no play in a BB. In terms of spacers between bearing and spindle, neither  BB camewith any additional spacers, and were both fitted as per instructions.


The currently fitted BB: https://primebikecomponents.com/products/bb386-bottom-bracket-sram-dub

I’ve also correctly spaced and preloaded the cranks, and maybe I didn’t make it clear but I’m not talking about lateral play (which would be the case if the cranks weren’t preloaded correctly) but vertical play up and down because there is not a proper fit between the spindle and inner race of the BB. I’ve measured both the BB’s I’ve used and they are within tolerance. The BB’s themselves have no play, (they are both new) which could be another explanation.

Photos attached.


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Component Deals & Selection / Re: New(?) Riro Carbon Cranks anyone? ("Leese"?)
« on: November 30, 2024, 07:58:36 AM »
I purchased a pair of these RIRO cranks from here:
https://a.aliexpress.com/_EudctB2 cost me £119 delivered to UK.

Leese seem to have a pretty much identical option.

The cranks use a dub 29mm(28.99) spindle and the chainrings attach using the shimano direct mount standard, though unlike shimano who I believe use a lockring to attach the chainring, these cranks sandwich the chainring between the crank arm and a flange built in to the spindle.

I believe rotor uses a similar mechanism with their Aldhu cranks.

Unfortunately however, the spindle on mine appears to be undersized, and there is a tiny amount of play in the bottom bracket. I’ve tried two different BB’s with the same result. The spindle is measuring in at 28.92/28.93. So, I’m currently processing a refund. I’d rather the seller would just send a new spindle but that doesn’t seem possible.

A pity as the cranks otherwise seem good, look good (imho) and are very lightweight. 571g (165mm cranks) including spacers and preload ring.

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