The rumours over this project started a little while back and were discussed in this thread:
Recently I got the design for their new rim which is asymmetrical and looks to my eyes more like a mix of the Braus’s narrower design and the Dominator2.
I’ve got the go ahead to share this here, so we can get feedback on the design from those with a more engineering bent.
Naturally there’s also an element of trust needed as the engineers at LB also clearly know how to make rims — but for 36” rims to be a success we would need there to be a clear awareness to test tyres at 60psi and be aware that there are variations between tyres.
I can’t wait either as it looks so nice especially the asymmetrical part.
Only area I wasn’t so sure on was the thickness of the side areas - think these are 2.6 whereas others as 2.8 ish. But again I’m not an engineer and my gut says this will work well due to being narrower than the Nextie
Nice job. It’s really narrow which would make for a “pointy” tire. Braus riders might have feedback on this.
Interesting they would make an offset rim. I guess it makes sense since even the bikes will have disc brakes in the front and lots of gears in the rear.
I can’t take the credit here as it was @Maxence that first mentioned it on the forums, but it’s been fun sharing my own view with LB when asked for comment - and I’ll be very keen to see how this one comes out of the mould.
I don’t personally know how it’ll change the feel but I can picture enjoying the feeling of a more pizza cutter style ride.
As for the asymmetry - I think symmetrical wheels are rather an oddity when it comes to normal bikes, and even with unicycles the only symmetrical system relies on the KH external braking system via crank mounted rotors.
It’ll certainly help with building a nicely tensioned 100mm hub or make for a killer 125 build where the tensions can be equalled.
I am sure you know all this but putting out here in block anyway.
I have to say with this rim on the cusp of coming to marking I might have imagined I’d have buyer’s remorse over getting my Braus rim - but I don’t. I don’t think this makes the Braus rim obsolete and since riding that wheel it is clear - so clear to me why people have wanted a carbon 36” / G36er. It flies and feels so nice. So no an LB rim isn’t going to have me not using the Braus rim.
I am planning on building a non-geared 125mm alu hub 36” wheel for this initial rim test. Then if this goes super well, sure later on I may shift it or get a second rim to upgrade my Dominator2 rim on my G36er. But that’s for a later (much later) project.
So I am mainly excited due to really “getting it” about a carbon rims on 36ers but not due to disliking my Braus rim.
The more I ride narrow rims, the more I like them! IMHO, they tend to turn easier than wide rims. They’re usually a bit lighter, too. So better for accelerations and hill climbing. They also seem to be less sensitive to road camber (to be confirmed, I’m not 100% sure of that fact).
So: that’s really great to have a narrow design!
Let me disagree on that point
I would say that on old or low-end bike, that’s not odd. I mean, when using rim brakes on a front wheel, you don’t need an asymmetrical rim. And a symmetrical rim is probably easier to produce.
The same goes for a single speed rim brake rim, no need for asymmetrical.
But yeah, for a top-end, carbon bike, I don’t see why you’d like a symmetrical rim.
And I’m planning on getting 2: one for my current G36er so I can have an easily well centered wheel and a second one for my freewheel 36er
The offset makes almost no difference to spoke length. But until you know the rim’s ERD, it’s impossible to know.
I’d prefer an asymmetrical rim, but I’m not sure I’d make the purchase just for that.
I don’t think a difference of a few mm in width really has an impact on wheel stability. The lightness and stiffness of carbon have a much greater impact.
With a heavy rim and tire, you get the impression of being guided by the wheel. For the same speed, the wheel’s inertia is greater, allowing for more forward/backward positioning error.
That said, it’s still a 36" wheel and, with speed, you get a greater stability than with smaller, even heavier wheels.