Tracy,
I was wondering if someone would mention those.  Someone on the Fly Rotary list
suggested these about a month ago.  (If I could remember who it was I would
give him credit for a great idea.)  It took me this long to locate two and get
them machined.  They are from a Honda Prelude.  I think they call it the H22,
or something like that.  Note though that they are stock POWER STEERING
PULLEYS, not alternator pulleys.  The shaft size is the same as the Geo
alternator, but there are teeth partway through the hole that need to be
removed on a lathe.  I'm sure there is enough material there to open them up to
fit the Mazda alternator if that's what you are using.  Also, the offset is
approx. 1/8" different, so some spacers will be required to get things back in
alignment.  

The Prelude p/s pulley is 4" dia.  but if you want one that is 4.5", use the
Integra p/s pulley instead.  It looks the same as the Prelude pulley, but just
1/2" larger.    

Mark S.

> Mark, I hope this question hasn't been asked a dozen times already but where
> did you get those Boffo alternator pulleys?  I want one!
>
> Tracy
>   ----- Original Message -----
>   From: msteitle@mail.utexas.edu<mailto:msteitle@mail.utexas.edu>
>   To: Rotary motors in aircraft<mailto:flyrotary@lancaironline.net>
>   Sent: Friday, June 18, 2004 8:20 AM
>   Subject: [FlyRotary] Dual Fanbelt/Alternator Picture
>
>
>
>   Bill,
>   I attempted to attach this picture yesterday, but it got cut out.
> Hopefully,
>   this time I'll be successful.  I wish the front belt had a bit more wrap,
> but
>   this is as much as I could get (almost 90 degrees).  The only way I could
>   figure on getting more wrap would entail using an idler pulley, which I
> didn't
>   want to do.  
>
>   Mark S.
>   (picture attached, I hope)
>