Subject: Cosmo bellhousing/RD/starter
From: ACRE NL
Date: 11/26/2002, 8:10 AM


Marc Wiese wrote:

Marc Wiese
Great pics. Like the shape and profile of the assembly.
That's the set up I am using on the 20B and one of my FD 13Bs (the
automatic). I have the same bellhousing and starter arrangement. The
adaptor plate could use some ears for motor mounts---
Bulent-
What was TC's upcharge for the new longer shaft? Did you use the ring
gear from the cosmo (if so, how did you adapt it) or the earlier one
Tracy recommends?
Marc Wiese


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Thanks Mark, since my installation is a bit different, I did not want to
bore everybody with it. But for now I have found few things different:
The engine/bell housing meeting surface has two 1/2" dowels which I like.
The bell housing brings the prop 3" further - good for a pusher plane
I can use the stock starter without modifications.
The cost for longer shaft was upset by not getting adapter plate, so it was
a wash.

Tracy's damper plate will not fit Cosmo flywheel, and standard flywheel as
recommended will not work with my starter. So I made adapter plate from 1/8"
steel to be able to use the standard damper. (BTW I have as new flywheel for
sale that will fit Tracy's RD.)
At the moment I don't want to deal with extra mounting points. I use engine
mount from Conversion Concepts. Yesterday I checked the CG of the engine as
you see it on the photo. Without alternator, water pump etc the CG is in the
middle of the rotor housing closest to the prop.
Bulent


The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2002 All world wide rights reserved.