Mailing List flyrotary@lancaironline.net Message #29597
From: Ernest Christley <echristley@nc.rr.com>
Subject: Re: [FlyRotary] flywheel weight?
Date: Fri, 20 Jan 2006 13:50:21 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Russell Duffy wrote:

Anyone want to take a swag at how well this would work?

I'll take a shot.  I can WAG with the best of them.  Not so good at getting answers right, but I can WAG all day.

10lbs.  That is about the weight of a rotor.  But you'll be spinning it 3 times as fast, so it'll have 8 times the momentum (momentum is velocity squared, right?).  The object is to keep the shaft from speeding up and slowing down, and I think increasing the momentum 8 times would accomplish that well.

other ideas:  Have the disc water/laser cut.  And you don't need 4130, so have the cutter use whatever steel they have on hand.  Have a brake shop turn the disc and balance it, or you might just be able to get a brake rotor that would bolt right into place with little or no modification.  The heavy duty Matco rotors I just bought seem to be around those dimensions if memory serves.

--
        ,|"|"|,                                    |
----===<{{(oQo)}}>===----        Dyke Delta         |
       o|  d  |o          www.ernest.isa-geek.org  |
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster