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From: "Perry Mick" <pjmick@mail.viclink.com>
To: flyrotary@lancaironline.net
Subject: aluminum flywheel
Date: Fri, 20 Jan 2006 15:22:10 -0700
Message-Id: <20060120222027.M98692@mail.viclink.com>
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Russell Duffy wrote:

Greetings,
 
Yes, I'm trying to avoid spending too much time on this, but I'm tempted to 
try adding more significant flywheel weight to the single rotor, to see it 
it will behave better. I realized this isn't an ideal solution to an already 
heavy engine, but it might still be worth trying.  
My question is how much weight should I add to make sure this will get rid 
of the torque reversal issues?  
I understand that weight added farther out from the center has more effect 
than weight close to the center. Ideally, I would plan to make a ring, with 
about an 11" OD (or as large as I can without interfering with the starter 
ring), and about 7" ID. This would bolt to the redrive side of the dampener 
plate, using the existing 7/16" bolts. I made an estimate of the weight of 
steel, by measuring the volume of a 4130 plate, and weighing it. The result 
was 4.5 oz per cu in. My best estimate is that I can get close to 10 lbs, 
using a half inch thick piece of steel. Unfortunately, this will be quite 
time consuming, and tough to fabricate, balance, etc.  
The other option is to try to add more weight than I did before at the 4 
bolt locations. This is a much easier plan to implement, but I'm afraid I'll 
be lucky to get 5 lbs added using this method.  
Anyone want to take a swag at how well this would work?  
Thanks,
Rusty (resistance is futile)


Rusty,

  How about one of the aluminum flywheels often
sold to racers?

Dale R.

--------------

Rusty, I have a Racing Beat aluminum flywheel just laying around gathering 
dust. It cost me over $400 new.

Perry