Challenge NME
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Challenge NME
Postby Low Racer » Fri Jul 11, 2008 5:19 pm
Recumbents!! So many varieties and ohh the temptation. Only 10 of this were built and one is offered for sale on BROL. Please tell me don't even think about it.
Chong[/img]
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Postby Low Racer » Fri Jul 11, 2008 8:03 pm
If I were to spend that much money what other low racer bike could you think of. M5 Tica??
Chong
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Postby Bob Henderson » Wed Sep 10, 2008 3:15 pm
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Postby Bob Henderson » Thu Sep 11, 2008 5:40 am
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Re: Challenge NME
Postby Bob Henderson » Sun Feb 28, 2010 3:46 pm
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Re: Challenge NME
Postby Bob Henderson » Sun Feb 28, 2010 4:00 pm
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Re: Challenge NME
Postby Crankitup » Sun Feb 28, 2010 5:10 pm
Might want to change the info on that video from "... 40 mpg" to "... 40 mph".Bob Henderson wrote:I've been having a blast on my NME......My top speed on this great lowracer is 42mpr. This is pretty good for me. Here is a video......http://www.youtube.com/watch?v=tXbopqj8pZo Cheers Bob
Bacchetta Corsa '05
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Re: Challenge NME
Postby william » Mon Mar 01, 2010 3:06 pm
I still wonder why small diameter wheels are used when larger diameter is supposed to be faster?
Are smaller wheels less stable?
william
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Re: Challenge NME
Postby bradwoodbr » Mon Mar 01, 2010 5:22 pm
With the equivalent width and PSI, smaller diameter wheels are fast. There is a small theoretical difference.william wrote:Low racers just look so slickkkkk.
I still wonder why small diameter wheels are used when larger diameter is supposed to be faster?
Are smaller wheels less stable?
william
No stability loss. They are quicker than larger for changing direction.
Smaller wheels give me a harsher ride over rougher road surfaces, but it could be to do with the 120PSI I am running.
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Re: Challenge NME
Postby william » Tue Mar 02, 2010 10:13 am
There is also a large proportion of European manufacturers that are sticking to the 20 inch format with most of their bikes.
Ian Simms from Greenspeed also mentioned that the same profile of a tire, with the same air pressure, has less rolling resistance when smaller.
In all of this though I haven't seen any high pressure 20 inch by 23mm wide tyres. I can imagine they would make a harsh ride.
william
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Re: Challenge NME
Postby bradwoodbr » Tue Mar 02, 2010 12:10 pm
Inflating tyres to about 90% of maximum will give a better ride and faster speed over rough chipseal type road surfaces.william wrote:I run Pro race 3's and 110psi rear, 90psi front on 650c wheels. These have been the most comfortable tyres for me but still feel harsh on less than good asphalt. Lowering the pressure helps but risky with pinch flats. I've also experimented with the max pressures (115) for speed values but that was horribly rough going. It made my teeth chatter so bad and trying to talk to others sounded awful, like chipmunks. it didn't appear to be any faster either.
There is also a large proportion of European manufacturers that are sticking to the 20 inch format with most of their bikes.
Ian Simms from Greenspeed also mentioned that the same profile of a tire, with the same air pressure, has less rolling resistance when smaller.
In all of this though I haven't seen any high pressure 20 inch by 23mm wide tyres. I can imagine they would make a harsh ride.
william
My 28mm/406(20 inch) should not be run under 65psi.
I have not seen any 23mm tyres.
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Re: Challenge NME
Postby John Lewis » Tue Mar 02, 2010 9:08 pm
On rough surfaces max pressure can be counter productive not to mention loss of traction and its inherent danger. Another problem is the waste of power bouncing around. There was an article I recall somewhere with particular reference to bents. If I recall it suggested fatter tyres could be faster. Have to see if I can find it again.
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Re: Challenge NME
Postby John Lewis » Tue Mar 02, 2010 9:13 pm
John Lewis
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Re: Challenge NME
Postby Bob Henderson » Wed Mar 03, 2010 11:31 am
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Re: Challenge NME
Postby John Lewis » Wed Mar 03, 2010 9:07 pm
And my most important question is : What is the minimum X seam for these bikes. I'm not that tall and some have told me I'd not be able to reach the pedals.
Sounds like you really are having a ball.
John Lewis
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Re: Challenge NME
Postby Bob Henderson » Thu Mar 04, 2010 5:28 am
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Re: Challenge NME
Postby John Lewis » Thu Mar 04, 2010 7:09 pm
John Lewis
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Re: Challenge NME
Postby Bob Henderson » Sun Mar 07, 2010 6:52 pm
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Re: Challenge NME
Postby AusAce » Sat Apr 10, 2010 8:10 pm
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