D-boy Posted September 7, 2007 Posted September 7, 2007 Will a heavy drive pulley rob power from an engine or will it actually act more like a flywheel.
callwill Posted September 7, 2007 Posted September 7, 2007 The laws of inertia apply. The heavier it is the more difficult to accelerate it...that is to speed it up and slow it down takes more effort/work. And of course where the weight is concentrated also has an effect. Much the same as a flywheel imo.
D-boy Posted September 7, 2007 Author Posted September 7, 2007 So if I have this right once I bring the engine to full throttle The extra weight should help keep the RPM's up.
DMedal Posted September 7, 2007 Posted September 7, 2007 it IS a flywheel. whether that's good or bad "depends". If you've got a PTO clutch in between it may not be a good thing.
D-boy Posted September 7, 2007 Author Posted September 7, 2007 OK here I go spilling out my stupidity If it is a fly-wheel then why do they not put heavier pulleys on the engines (other than to save a buck)?
richp Posted September 7, 2007 Posted September 7, 2007 For the size pulley your talking, I can't imagine it would make much difference. Maybe if it was 8" or bigger.
UCD Posted September 7, 2007 Posted September 7, 2007 Because most engines all ready have a flywheel sized to the need of the engine and pulleys need to be different sizes to accommodate different attachment speeds.
D-boy Posted September 7, 2007 Author Posted September 7, 2007 Thanks for the info The main reason I was asking was I have an old sears that I installed a wisconsin engine on and it has this three groove (4") pulley on it which weighs alot more than a single groove pulley and I was kinda dissapointed in the power it output so I thought that the extra weight of the pulley might be dragging it down.
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