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Author Topic: Polyurethane Rule of thumb  (Read 3355 times)

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07 June , 2011, 10:43:33 AM
Hey guys, is there a rule of thumb for deciding which compound urethane will be best for which roughness tar... Sliding Excluded im talking about speed in realation to urethane compound and road roughness... How does one decide whats best for that particular road. Or are these trade secrets riders keep for themselves...? [bummer]
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07 June , 2011, 13:19:23 PM
i'm still a rookie myself, but i think i can add to this. if you think about your contact surface on a rough road, you do in fact have less grip that on a smoother surface. bigger gravel, more space between the gravel, less contact. so i would imagine you'd want to look at a softer duro when riding a rougher surface.
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08 June , 2011, 08:29:00 AM
If you want speed, a bigger softer wheel is good for rough roads especially. You'll actually find that softer wheels are faster than hard ones because they absorb the imperfections in the road, the amount of energy lost because of deformation of the soft wheel is negligible in the high rebound wheels we have today. The benefit of harder wheels is a better slide and durability. Bjorn is right, rough roads actually have less grip but the slide is unpredictable.

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24 June , 2011, 12:04:27 PM
Really rough roads are nasty...I talking Eastern Cape here...

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24 June , 2011, 12:06:55 PM
yeah we have very few smooth roads here. all the awesome roads have a pretty rough surfaces. they're skate-able i suppose, depending on your level of gnarliness...
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24 June , 2011, 12:08:41 PM
I tried two roads near Uniondale.

One was just gentle and rough == Slow ride, not much fun
The other was moderately steep and rough == Slow ride, then horrible wobbles and bailage...

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24 June , 2011, 12:30:53 PM
my brother now lives in George. he reckons that road leading out to Saasveld is an undiscovered gem! moderate on one side of the pass and more gnarly on the other, but smooth surface.
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