Rim Width and Skill...
 

[Closed] Rim Width and Skills

 pnik
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I've been thinking about this. I've got some very nice 819 rims with 2.2 Rubber Queens that I was happy with until I went to FoD a few months back and was chasing someone much faster than me down the berms and a few times felt the tyre give (mainly the rear), so immediately look up here and there conclusive proof 19mm rims are old school need to go large etc. but I cant really afford to replace a good pair of wheels with another set of good but on trend wheels (i guess would be Arch EX btw). anyway to the point. Jerome doodar is sponsored by MAVIC and their enduro rims are 19 back and 21 front. I'm sure even on my best day I'm not going to touch him descending and if his tyres were rolling off his too narrow rim he'd do something about it. So i guess the question is do I need better skills? If so what am I doing that Jerome and the mavic gang arent doing? Does this make any sense?

thoughts, preparing to be lambasted (is that how you spell it?)


 
Posted : 01/10/2013 9:55 am
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719's and 721's here no real issues though I don't run them silly soft as a general preference. not really impacting my speed. Skills are more important


 
Posted : 01/10/2013 10:01 am
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more psi in the tyres?

my guess on the skills front, is you're not leaning the bike over enough. to exaggerate - torso almost directly upright, bike almost horizontal, weight on outside foot

[img] [/img]


 
Posted : 01/10/2013 10:02 am
 pnik
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That is what I think I'm doing, just not well enough, i guess.

I think it is symptomatic of a wider trend where we are drawn into newer shinier ways of compensating for our skills short-comings rather than actually getting good. I know when I take the hardtail out it reminds me of this and can be a more thrlling ride for it too.


 
Posted : 01/10/2013 10:09 am
 pnik
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nice pic by the way.


 
Posted : 01/10/2013 10:10 am
 pnik
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some tyres must be more prone to flopping over than others too. the rubber queen 2.2 do seem relatively large for their quoted size.


 
Posted : 01/10/2013 10:12 am
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They've also got thin sidewalls, even in the protection version. Flexy sidewalls and low pressures mean a tyre is prone to squirm and roll when pushed harder. IME it's also a precursor to rolling a the of the rim if you keep working it hard without recognising the problem and doing something about it.


 
Posted : 01/10/2013 10:25 am
 pnik
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Prior to the RQ's i was running a variety of Maxxis tyres generally happy with grip levels, but I had several where the outer rubber skin detached itself from the carcass so gave up on that, as i recall they where heavier with stiffer sidewalls. The wheels and tyres came on the bike and most of the time i've been impressed, only when pushing the limits (of my skills probably) did i encounter the "issue". tyres are cheaper to replace than rims though. So maybe I should be looking at a tyre swap first.
of course that could lead to a "what tyre" thread and no-one wants that!


 
Posted : 01/10/2013 11:28 am
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It's not a flat corner - the berms will keep you in if you look up and around them.

You might be entering the berms too low for your entry speed, so the bike drifts up the berm, back wheel goes first because weight bias naturally moves to the front wheel as you change direction (not a bad thing).

Try entering the berms higher up where it is steeper and put the bike over more and LOOKING ROUND TO THE EXIT. If you enter too slow you will just ride down the berm as you exit. Fast enough and you will rail it.

BTW. I'm no expert!


 
Posted : 01/10/2013 1:07 pm
 Euro
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It may well be a technique thing, but air is a lot cheaper than new rims (or a skillz lezzon) so stick a bit more in first and see how she goes.


 
Posted : 01/10/2013 1:40 pm