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Why not remove the three Allen head screws you are going to use, take a
piece of thin poster board or vellum, and do a pencil rub to get the impression
of the holes, then use this as a template?
Bill Schertz
Sent: Saturday, September 05, 2015 7:12 AM
Subject: [FlyRotary] Re: redrive question
Rich,
I think the only one
who would have that measurement is whoever has the plans for the PSRU. You
will probably have to measure your PSRU in order to get the measurements.
The other possibility is that whoever built that plane in one of Bobby’s
pictures. I don’t know whose plane it is, but I suspect it is either
Bobby’s or Mark Steitle’s. They probably just made the plate to fit
and don’t have the measurements.
Bill
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]
Sent: Friday, September 04, 2015 10:47
PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: redrive
question
In Tracy's prsu, the forward oil seal is in a
circular aluminum piece which is attached to the prsu by several Allen bolts
which are arranged in groups of two. What I was looking for is the diameter of
the bolt circle and the spacing of those bolts
My bracket will be a flat steel plate affixed to the
front of this plate using 3 of the bolts. The brush/rpm sensor will be connected
through an ear on this plate
Rich,
If I understand what
you are asking, I think Tracy’s PSRU has a SAE
2 flange. The dimensions are in this
gif.
http://acsproducts.co/wp-content/uploads/2013/07/as127.gif
Bill
From:
Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net]
Sent: Friday, September 04,
2015 6:29 PM
To:
Rotary motors in
aircraft
Subject: [FlyRotary] Re: redrive
question
I have already designed the mounting
plate
All I really need is the spacing of the bolts so I can
make the fixture before I disassemble the
prsu
Two examples for MT props.
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