Re: [Classicrendezvous] Re: smooth hubs


Date: Sun, 29 Oct 2000 15:20:22 -0500
From: Jerry Moos <moos@penn.com>
To: Monkeyman <monkey37@bluemarble.net>
CC: classicrendezvous@bikelist.org
Subject: Re: [Classicrendezvous] Re: smooth hubs
References: <l03130300b6222ca655bc@[128.111.201.65]>


Ah, Harlan! I should have known the "mad scientist" of US components would have been the one to have actually conducted such a test. Shame to hear recently than Harlan is evidently easing into retirement - one of the really innovative thinkers in the industry, but he has certainly "done his time" and deserves to retire if he wishes. BTW, not sure my proposal of coupling an electric motor to the axle is the best way, since in actual operation, of course, it's the hub shell that rotates while the axle remains stationary. Driving the shell with the motor, however, means one must device a more complicated coupling, ideally one with as few of its own efficiency issues as possible. Where does one find archives of Bicycling Science? Maybe I should just read how Harlan did it.

Regards,

Jerry Moos

Monkeyman wrote:
> >> My vote for the early 70's on smoothness was Campagnolo NR/SR(IT), Phil Wood
> >> (US), Lambert(UK) and Maxicar(Fr) followed by the early Duraace and early
> >> Suntour Superbe. Later the field was cloudy as sealed cartridge bearing
> >> smoothed hubs out over many price ranges. It should be noted that Lambert
> >> hubs used sealed cartridge bearings.
>
> None of these are near as smooth as the Hi-E's and Weyless' of the same
> time from my view, though the Maxicars are close. If you're looking for
> tests on hub "smoothness" and relitive energy loss from the bearings and
> their surfaces, I think Harlan (Hi-E) has done them and they were published
> in Bicycling Science, I think. I also seen that England's Mike Burrows is
> working on some testing similar.
>
> enjoy,
> monkeyman
>
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> Nobody can do everything,
> but if everybody did something
> everything would get done.
> -Gil Scott Heron-
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!