Hypothetically: Pneumatic a Faster Wheel?

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dcpattie
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Hypothetically: Pneumatic a Faster Wheel?

Postby dcpattie » Mon Jun 05, 2017 3:41 pm

If you were building a fast rollerski with zero resistance, would a pneumatic "air" wheel be the fastest set-up? Perhaps a harder compound wheel like what inline skaters use?

Being able to soak up the bumps should be a factor as well as weight and wheel size.

Thoughts?
Dave in Nordic Virginia

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Magnus Johansson
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Re: Hypothetically: Pneumatic a Faster Wheel?

Postby Magnus Johansson » Tue Jun 06, 2017 12:12 am

dcpattie wrote:If you were building a fast rollerski with zero resistance, would a pneumatic "air" wheel be the fastest set-up? Perhaps a harder compound wheel like what inline skaters use?

Being able to soak up the bumps should be a factor as well as weight and wheel size.

Thoughts?

Very interesting questions, Dave. Here is one elaborate answer concerning bike wheels that I believe is relevant also to roller ski wheels: http://europebicycletouring.com/Comment ... tires.html

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dcpattie
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Re: Hypothetically: Pneumatic a Faster Wheel?

Postby dcpattie » Tue Jun 06, 2017 4:09 am

Magnus Johansson wrote:
dcpattie wrote:If you were building a fast rollerski with zero resistance, would a pneumatic "air" wheel be the fastest set-up? Perhaps a harder compound wheel like what inline skaters use?

Being able to soak up the bumps should be a factor as well as weight and wheel size.

Thoughts?

Very interesting questions, Dave. Here is one elaborate answer concerning bike wheels that I believe is relevant also to roller ski wheels: http://europebicycletouring.com/Comment ... tires.html


29ers were all the rage about 5-years ago and now most MTN bikes are indeed on 29 inch wheels. I recall about 15 years ago the debate was 650 vs 700c wheel in triathlon - eventually the 700c wheels won out.

I think the Jenex Aero 150 series rollerskis could be quite fast IF Jenex took some weight (mass) out of the ski. I'd start with a carbon shaft and take a closer look at the hardware and find ways to reduce weight with lighter nuts & bolts. I bet they could take 150 grams out of each ski without too much difficultly.

I ask because I'm looking for a racing rollerski (classic) for an uphill race. I know many use the Ski Skett "BiTurbo" which is a 3-wheel rollerski like the Jenex RC150. The BiTurbo uses hard wheels.
Dave in Nordic Virginia


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