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Re: Onirii M2 and M4 hydraulic disc brakes
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Thanks for the write up. So they have almost no modulation like Shimanos?

was out for a short ride last night with them. they have more modulation than shimano's. My Xt 2 pot's just seem to bite, with a little give, but it's quite a short window.

These, rather unsurprisingly, feel more linear. there's a fair bit of travel to get to the bite point, however I think that's more to do with the really strong pad springs I have, pushing the pistons back, rather than just keeping the pads in place. once at the bite, there's maybe 1.5x the lever travel once you hit the bite point to getting full power.

That took a bit of getting used to. I like the shimano's for their warp speed into anything and brake late, but you need to be quite subtle with feathering etc. these, no problem, grab a bit of brake and squeeze more for more power.

I'll try a few tricks to get the bite point a bit closer and see how they go.

one thing I did realise though, is that on my local trails, I brake a lot less than I thought. :-/
July 05, 2022, 03:49:59 AM 		3
Re: Onirii M2 and M4 hydraulic disc brakes That's a decent breakdown of them. there are quite a few sharp edges, some need a bit of buffing, mainly those that are in contact with the bars, to prevent point pressure.

The calipers have a rough finish on the inside around the pistons. Although I never thought it would be that much of a problem. they're cheap brakes, it's a hidden area.

he reported caliper flex is a bit worrying, can't say I'd noticed it in use, but....I'd not really looked. I'll need to keep an eye on that, if it looks like it's flexing more than it should I'll def need to watch out for cracking.

The comment about the lever piston diameter is interesting, admittedly it's not something I'd considered as most manufacturers for their mainstream brakes, I thought got piston seals in x size, so make the pistons to suit! there are notable exceptions, I guess.

It's not that they lack power, they don't deliver it in the same way as a servo wave brake. Over the next few rides I'm going to try a few different things, one of which will be swap out shimano levers onto the caliper, and shimano caliper onto the z race levers and see if each end behaves differently to stock. plus look at what impact fitting better hose has. the stock hose is really flexible.


July 11, 2022, 04:10:18 AM 		5
Re: Carbonda fm936 Thoughts
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Hello all!  I am 6'2 with 34 inseam and can't decide between a L or XL FM936.  Any thoughts or feedback from those who have built theirs up?  Thanks!

go XL. I'm similar, albeit slightly shorter legs and went for a L. It just felt really short when seated and a compromise. yes, the seat tube on the XL is pretty big, but the fit will be better.
August 02, 2022, 04:01:16 AM 		1
Re: Onirii M2 and M4 hydraulic disc brakes mine still work, haven;t leaked and haven't changed in performance.

still not got around to changing hoses etc, but they're doing fine, even through my mildly neglectful attitude toward my ride anything bike.

September 06, 2022, 11:42:25 AM 		2
Re: Tideace 2022 29er Boost 12*148mm New Mold MTB029 I have the SPcycle version of this frame and it's not as bad as the one here. bearing seats are well formed, PF BB is always going to be a potential problem...

I have a RF aeffect chainset with a 0 dish 34T chainring and it's tight, couldn't go bigger in this frame. it's definitely Boost only wheels, no adapters in this or the chainline is not great.
the dropout is a bit odd. I've had the driveside retaining bolt jump a couple of times on rough stuff, especially cornering. I replaced with a slightly longer bolt and it's been fine, but I think it's the design. The threaded section of the dropout, the bit the axle screws into, is part of the inner plate of the dropout/hanger. the outer plate just holds it all in the frames dropout, and is secured using a small bolt. If there is any flex being transmitted through the rear wheel, it loads the little bolt. On similar dropouts (they look very much like cube dropouts) the threaded section is part of the outer plate, so tightening the axle closes it all together around the frame dropout, making for a much more secure setup. No idea why it's different on these frames.

ride wise, it's quite stiff and not that forgiving. it may be the short stays are responsible for that, but it doesn't have the give of other carbon frames I've ridden.

it's light and climbs like a goat though.

I ran mine with 120mm forks, but it's much better suited to forks up to 110mm travel.
October 06, 2022, 10:59:05 AM 		3