On Sat, 10 Apr 2004 15:35:55 GMT, warren <
[email protected]>
wrote:
>In article <[email protected]>, Andy
>Coggan <[email protected]> wrote:
>
>> "Rob" <[email protected]> wrote in message
>> news:cqNdc.61719$Pk3.47585@pd7tw1no...
>> > I have a question about track Disk Wheels...or any track wheels
>> really..can
>> > one use a quick release on the track or must in be bolt and nut type of
>> axel
>> > ? are they hard to change ?
>>
>> If you'd rather not (or can't )change the axle, you can also use a road
>> wheel by replacing the skewer with one of the Allen head non-quick-release
>> types. However, even if you've got a road wheel than can be used with a
>> fixed cog (e.g., older Specialized Ultralight), I'd be hesistant about doing
>> this on the rear, as you might easily pull the wheel to the side with a
>> strong jump. It works just fine with a front wheel, however.
>
>Andy,
>your concerns are unfounded. ZIPP disk rear wheels are one of the most
>popular track rear wheels and they use an allen screw with washer that
>is almost identical to the allen bolt method used on the replacement
>skewers with allen screw ends sold at Excel Sports and elsewhere for
>this purpose.
It's worth noting that the newest generation of Zipp's track hubs and
disc wheel have abandoned the Allen-head bolts in favor of
traditionally nutted axles. The old system was pretty marginal
(particularly at the rear), but it worked as well and as often as it
did largely because there was only a gap of a few mm between the head
of the bolt and the axle end into which it was threaded.
On the other hand, the Allen-head replacement skewers to which you
refer must pass through the entire over-locknut axle width plus the
left and right dropout before engaging the nut at the other end. On
the front, that's a distance of 110 mm or so, the rear must span
around 130 mm. Consider that you're winding up a slender fastener (~4
mm in diameter) that's twenty times (or more) as long as it is wide to
a recommended torque value that's second only to the torque normally
applied to secure your bike's cranks. Think you can get it tight
enough for consistent security without wringing the head off?
-------------------------------
John Dacey
Business Cycles, Miami, Florida
http://www.businesscycles.com
Now in our twenty-first year.
Our catalog of track equipment: eighth year online
-------------------------------