skinny tyre

skinny tyre

Post by Kevin Gilberts » Sun, 23 Apr 2000 04:00:00


Quote:

> I tryed out my new skinny tyre today, werid. A 26 x 1 which as I measured
> it  will allow me to use  the 26 inch rim in a 24 inch race so i don't
> have to take two  similar unis to biejing and euro cycle. Can any body
> confirm this for me, I'm pretty sure some of the swiss team at euro cycle
> were racing on 26x1 s does any body else on the NG do this? The diameter
> is spot on the 61.8 cm allowed in the IUF rules, I suspect this is  why
> that diameter is given?

The Swiss usually use 26" wheels when racing (and they are very fast on
any size wheel), but I don't think their wheels are legal for IUF
competitions. It is possible that the wheel you have will fit within the
legal size, but you'll have to measure it to find out. Measure the
circumference of the wheel and if it's 1941 mm (618*pi) or less, then it
will be fine.
--
        ___________ ===================================================

 / _ '/ / / _'\_ /          ICQ: 12611076      AIM/AOL: UnicyclingGilby
 \_  /_/_/,___/ /   Free Unicyclist.com e-Mail at http://unicyclist.com
/\/ /__________/ World UNICON X: http://www.unicycling.org/iuf/unicon10
\__/           ========================================================
 
 
 

skinny tyre

Post by Sarah Mille » Mon, 24 Apr 2000 04:00:00

I tryed out my new skinny tyre today, werid. A 26 x 1 which as I measured
it  will allow me to use  the 26 inch rim in a 24 inch race so i don't
have to take two  similar unis to biejing and euro cycle. Can any body
confirm this for me, I'm pretty sure some of the swiss team at euro cycle
were racing on 26x1 s does any body else on the NG do this? The diameter
is spot on the 61.8 cm allowed in the IUF rules, I suspect this is  why
that diameter is given?

hopeing someone knows, i don't want to be disqualified on a techniality.

sarah

 
 
 

skinny tyre

Post by unicycleSource » Mon, 24 Apr 2000 04:00:00

I rode Leo's at Bottropp, it was within the regs but it did not feel great -
definitely prefer bigger 24" tyres for track.

Roger
--------------------------------------------
     The UK's Unicycle Source
   http://www.unicycle.uk.com/
--------------------------------------------

Quote:
----- Original Message -----



Sent: Sunday, April 23, 2000 4:24 AM
Subject: Re: skinny tyre


> > I tryed out my new skinny tyre today, werid. A 26 x 1 which as I
measured
> > it  will allow me to use  the 26 inch rim in a 24 inch race so i don't
> > have to take two  similar unis to biejing and euro cycle. Can any body
> > confirm this for me, I'm pretty sure some of the swiss team at euro
cycle
> > were racing on 26x1 s does any body else on the NG do this? The diameter
> > is spot on the 61.8 cm allowed in the IUF rules, I suspect this is  why
> > that diameter is given?

> The Swiss usually use 26" wheels when racing (and they are very fast on
> any size wheel), but I don't think their wheels are legal for IUF
> competitions. It is possible that the wheel you have will fit within the
> legal size, but you'll have to measure it to find out. Measure the
> circumference of the wheel and if it's 1941 mm (618*pi) or less, then it
> will be fine.
> --
>         ___________ ===================================================

>  / _ '/ / / _'\_ /          ICQ: 12611076      AIM/AOL: UnicyclingGilby
>  \_  /_/_/,___/ /   Free Unicyclist.com e-Mail at http://unicyclist.com
> /\/ /__________/ World UNICON X: http://www.unicycling.org/iuf/unicon10
> \__/           ========================================================


 
 
 

skinny tyre

Post by John Fo » Tue, 25 Apr 2000 04:00:00

Quote:
> it  will allow me to use  the 26 inch rim in a 24 inch race so i don't
> have to take two  similar unis to biejing and euro cycle. Can any body
> confirm this for me, I'm pretty sure some of the swiss team
> at euro cycle were racing on 26x1 s does any body else on the
> NG do this? The diameter is spot on the 61.8 cm allowed in the IUF
> rules, I suspect this is  why that diameter is given?

Actually, that diameter was arrived at by taking the nominal maximum wheel
size, 24", and adding a third of an inch to allow for slightly larger 24"
tires, and fixing the maximum diameter at 24.333 inches, which is 61.8 cm.

Wheel sizes, as measured by rim size or by the size printed on the side of a
tire, are very rough. We realized we needed to set an exact diameter as the
maximum. Then, anything that fits within that maximum would be legal, even
if it started life as a nominal 26" rim.

To work optimally, at UNICON or other large competitions, racing wheels
should be measured to make sure they comply. This is usually not an issue as
most racers are on recognized tires. But any unusual wheel should be
measured.

Quote:
> hopeing someone knows, i don't want to be disqualified on a
> techniality.

Give your wheel a good measure, and if it's within the 61.8 cm, you're fine.

According to my calculation, a 61.8 cm tire will have a 194.15 cm (76.45")
circumference. So another way to measure tires would be by rollout. Then all
you need is a measuring tape with some marks on it. Does anyone dispute my
circumference number?

Stay on top,
John Foss, the Uni-Cyclone
http://www.unicycling.com

"I'm not into pain. I'm into juggling." - A grandpa with small child at the
Davis Picnic Day, walking away from the free unicycle lessons toward the
free juggling lessons (and already able to juggle!)

 
 
 

skinny tyre

Post by Leo Whit » Wed, 26 Apr 2000 04:00:00

The 1" (559-25) tyre that I used in Bottrop was inside the limit, it
accelerated well for 100m but in the 1500 it felt too light and didn't
maintain its momentum as well as a big 24" tyre.
It probably would work better with some thin lead strip wrapped around the
rim as at least one other rider was using.

Leo


Quote:
> I rode Leo's at Bottropp, it was within the regs but it did not feel
great -
> definitely prefer bigger 24" tyres for track.