> > Ken Welter wrote:

 > >
 > > >  > Does anyone know of a source for cog belts and pulleys
suitable for application to a 13B engine?
 > > >>
 > > >>  Hank Huddleston LNC 235 Rotary
 > > >>  bahahud@aol.com
 > > >
 > > >Ken Welter builds a cog belt reduction drive.
 > > >Search google for Coot.
 > > >
 > > >Paul Lamar

 > >    I make my pulley as there is no off the shelf source for
light weight pulleys.
 > >    I make the small pulley from 1045 steel and the large one from
 > > 6061-T6 and then hard anodize it.
 > >   What ratio do you need ?I do have some used pulleys that I would
 > > make a deal on.
 > >
 > >    Ken
 > >   http://homepage.mac.com/rotarycoot/
 > >   rotary.coot@verizon.net
 >
 >
 > Ken,

 > I'm building a Glass Goose, which will accept a 13B with an in-line PRSU.
 > However, the vertical distances are very tight.  A lower CG may be more
 > appropriate and a higher thrust line might allow a larger prop -- which is
 > currently a 65" Warp Drive.
 >
 > What size Warp Drive prop are you running?
 >
 > Do you have total weights on your PSRU's?
 >
 > Thanks,
 > Scott Gettings

 Ken,

 Check out Jess Meyers website http://beltedair.gfwireless.com/default.htm
 He's not a Rotary powered kinda guy, but he has spent years
developing acft belt drives.

 Jess Meyers built his first Belt Reduction Drive more than twenty years ago.
 Since that time, they have been flying proof of the reliability of
belt driven aircraft.
 67Y now has over 450 hours of trouble free flying. Read about our
development.

 L David Stricker
 15054 West Piccadilly Road
 Goodyear Arizona 85338-8703
 602.885.7706

He does not make a ratio suitable for our use. We need something in the range
of 2.85:1 up to 3:1. I am very familiar with the history of this airplane
and I would not exactly  call it trouble free flying :) I also know the test
pilot :)

Paul Lamar

   Its sure been reliable for me as I lost 3 engines in 400 hrs do to
a Ross redrive and have had no problems in 700 hrs on cog belts.

  Ken

Ross had a lot of quality control problems towards the end of their life
as a business. There are early ones around still working fine.

Also, I might add, Ken has been in the habit of running NOS though the engine
providing an additional 80-100 HP for water take offs with his 2900 pound gross
Coot.

Paul Lamar

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