-------- Original Message -------- Subject: Cranks and flywheels List-Post: krnet@list.krnet.org Date: Tue, 27 Dec 2011 02:16:14 -0600 From: Glenn Martin <rep...@martekmississippi.com> To: KRnet <kr...@mylist.net>
On 12/26/2011 9:56 PM, Tony King wrote: > One significant factor, regardless of which end it's being driven from, is > that the torsional loads imposed on the crank in an automotive application > are vastly smaller than those imposed by a propellor spinning at 3000 rpm. On a theoretical note: Isn't the flywheel meant to store the energy imparted to the crank between the power pulses? And if that is the case, doesn't a lighter flywheel tend to cause the torsion differential between the pulses on the crank to increase versus a heavier flywheel which will tend to store the energy longer. This is comparable to what a filter circuit does in electronics. If I reduce the capacity of a filter, then the ripple voltage will increase, especially under heavy loads. Perhaps a heavier flywheel should be considered, especially in an engine which is being increased in its power output. I'd be interested in hearing the science on this. -- Glenn Martin, KR2 N1333A, Biloxi, MS
