The Field Expedient Flywheel

So I had an idea about adding flywheels to an AHM GP18.  It occurred to me that it might be possible to take washers of precisely the correct measurements and mount them as flywheels.  So that's what I did, I measured, went to Lowe's and measured washers....what I found out was that quarter inch flat washers had exactly the correct measurements.  With a little masking tape and mounting the motor just bit higher I got this:

and it works with no problem....no a huge boost in performance, but a smoother operation.