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Re: [GMCnet] Onan-Pertronix install [message #128682 is a reply to message #128668] Sat, 04 June 2011 18:24 Go to previous messageGo to previous message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
Senior Member
G'day,

Here's the picture of how to install the magnet in the flywheel, I would
suggest making the hole shallow so that the magnet sits proud of the
flywheel. That will increase the distance between the flywheel and the
Pertronix.

http://www.gmcmhphotos.com/photos/showphoto.php?photo=6801

The reason being is that the flywheels are a casting and the one on Double
Trouble's Onan was not true. When John Sharpe and I installed mine I set it
at a tight 0.030 and when fired it up the first time the flywheel hit the
Pertronics. We installed a second unit and IIRC set it at 0.060 away from
the magnet and I flap wheeled the flywheel to make sure it cleared. I
noticed after doing that the vibrations increased. I just had the flywheel
on the Onan checked; it was out of balance and had to be drilled to bring it
back in balance.

Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
 
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