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Hooked vs Hookless rim
NB: Originally posted elsewhere on the Global Riders Network and appears via syndication.
What do we think about these?
Based on what I've read and my own experience I know which way I'm going, but I'll reserve my opinion for meow.
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I have been the user of both with the Specialized Roval Carbon Wheelsets.
I like the simplicity of the new hookless rim design, and it does provided some added strength. It should be easier to manufacturer as well - which will hopefully keep the pricing lower.
Having said that, I have cracked both types of rims, but theoretically the hookless rim can be thicker and therefore stronger.
My major issue with the hookless rim, is that it is more tedious to seat and seal tubeless tyres. With new tyres that have been folded it takes a bit of fiddling to seat the tyre when first installing. Once the tyre has a bit of shape it is less of an issue.
D
I've done 7,141kms on my Epic that has Roval Hookless carbon rims and haven't had any issues.
.......what you are saying is that Dicko needs to either lose weight or ride more smoothly
Well, he can't lose any more weight
... with these sometime this year. Reports so far seem good. From a strength perspective I like the idea. I'd prefer a UST style lip on the inner edge of the bead seat though.
Damn, I was hoping some people would rage over this
I've already ordered a set for my recently acquired DH bike. Will have to wait quite a while for delivery tho.
The Enve wheels on my AM bike are hooked, and I've clobbered them a fair bit with no ill effects.
It's probably one of those things that won't make a difference to 99% of riders, but lets face it, if you are buying, you may as well buy the 'latest'.
My questions are:
A: If you trashed a tyre (think sidewall tear)and needed to run a tube to get out of trouble, would the tyre stay on the rim?
B: Would you need to use a tyre with a diffrent bead design?
Tubes are fine and any tyre works. There's no special bead design
I have some on my Epic and haven't noticed much of a difference compared to tubeless rims with bead hooks.
I have had a couple of flats, one which was like a pinch flat from the rim pushing though the side wall. Still didn't manage to damage the rim.
You can put tubes in no problems and the tyres are the same.
They even make that reassuring pop when you initially pump them up and the bead seats itself in the proper location.
My breakages and others that I know of, are probably more related to running really low tyre pressures 18-20 psi then faults to the rim or design itself.
I found I had to run more pressure in the hookless rims to prevent tyre burping when punching into corners.
I'm no light weight, I'm not smooth and my technique is far from pretty...
You look a lot prettier than me
Ahem, on a bike I mean.
I'm confused as to why they're promoting hookless, to me apart from being cheaper to manufacture I can't see an advantage, hooked will save weight & seat the tyre more securely.
The outer edge is where impact occurs is also still thick so why go hookless?
Enlighten me!
Hookless are meant to be cheaper and stronger
Cotic Tony, sure the outer edge is thicker but its also thinner under which is where damage can easily occur on rock strikes. I have seen a number of hooked carbon wheels with the carbon cracked and compressed under the hook.
All ENVE wheels are now hookless!!
I have been running hookless carbon wheels for about 5 months now on my Tracer and have put them through a number of AM race runs 7 days in Rotorua and countless rides around redhill without issue. I had a crack a KOM on Ichy and Scratchy today (got 3rd) and I was sure I was going to blow a tyre off at one point but no problems at all.
I am hooked
I'm more confused as to why rims are still made to look like they need to run rim brakes?
Innovation's greatest barrier is tradition.
I have run both hooked and hookless, broken rims on both types, and have noticed zero difference in the ability to set them up tubeless - there is a lot of fuss over this, but literally no difference that anyone would notice.
I am beginning however to reconsider this continued push for extra wide rims, giving a 'wider' tyre when mounted. Sure - you might burp the tyre less, but the tyre doesn't actually get wider. What is resulting is less 'height' of tyre. This gives less protection against rim strikes when running lower pressures (one of the promotional advantages of wider, hookless rims).
More rim strikes mean more rim damage, and potentially more sidewall rips (not just inner tubes get snake-bite punctures) - so there is a trade off that I am increasingly aware of - and am rethinking my rim / tyre combos as a result....
Enves (interestingly) are not that wide - relative some of the crazy rims being produced at the moment....