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Message from discussion Roller dynamo slippage problem
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Stephen Bauman  
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 More options Apr 3 2012, 7:56 am
Newsgroups: rec.bicycles.tech
From: Stephen Bauman <sbau...@abt.net>
Date: Tue, 03 Apr 2012 06:56:26 -0500
Local: Tues, Apr 3 2012 7:56 am
Subject: Re: Roller dynamo slippage problem
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On Tue, 03 Apr 2012 08:29:07 +1000, James wrote:
> I've never noticed my Sanyo Dynapower roller dynamo slip in wet weather.
>   AFAIK, the light is always on while the dynamo is on the tyre and the
> wheels are turning at a little faster than walking pace.

<snip>

I experienced significant slippage in wet weather to the point that I
replaced it with the Soubitez equivalent. The Sanyo had a very light
spring whereas the Soubitez' was much stronger.

Sanyo's light spring also meant it would bounce off the tire whenever I
went over bumps. Sometimes the bounce was so great that it would snap
back and engage the stop. Like others, I cured this by using rubber bands
to get more pressure against the tire.

Sanyo has upgraded its classic Dynapower bottom bracket generator with
the NH-T10 model.

http://www.peterwhitecycles.com/sanyo.asp

I installed one, along with modern LED lights. The dynamo appears to
eliminate all the problems with the old model. There is a rubber covering
for the roller wheel that eliminates slippage and the spring is much
stronger. Also, the LED lights come to full brightness at only 1 watt so
there much less effort is required. This also reduces slippage.

Stephen Bauman


 
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