| Re: Rim brake heat and clincher blowoff, was Re: Potential good news for Mt. Washington access.
>I think Jobst nailed it on the head. While it might be interesting to
>explore all the nuances of this phenomenon, all that really matters is
>what the tire does when actually rolling down a steep hill with a
>rider on board.
>
>But to add my voice to the chorus of armchair testers, I'd suggest
>that it might be interesting to see the effects of using a deep rim on
>the rear wheel to see how effective the extra mass is at getting rid
>of the heat.
Rim heating gets a lot of discussion on the tandem list, for obvious
reasons.
Several posters anecdotally believe that deep dish rims are helpful because
of the extra mass and the area which can be cooled.
I've put forward the theory that rims with ceramic braking surfaces *may*
offer additional resistance to heating as the ceramic *may* serve as an
insulating layer reducing heat induction into the aluminum rim. I found at
least one technical source which appeared to support this idea, but no "real
world" testing has been performed to develop real data on bikes.
Chris Neary
diabloridr@comcast.net
Chris & Tracey
1999 Co-Motion Speedster
|