LANCER
Serious Thumper Alliance Member
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Savage Beast Performance Parts
Posts: 10603
Oklahoma
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Keep in mind too that the total mass which the bike must push down the road is a major factor. I know that my Savage ... REX ... has to push pretty hard to get my 208 lbs (this week) moving and up to speed.
350 lb bike + 208 lb dead weight sitting on Rex's back = 558 lbs.
I do not remember the power required to move a pound the required distance in a given amount of time that would equal one horsepower, but ... anyway, if you only weigh 147 lbs then it takes a lot less power to move you down the road at a given speed than it takes to move my fat laden squatty body.
This little book I found at the Northern Tool store, "Pocket REF", by Thomas Glover, says that Horsepower to raise water = gallons per minute x Total head in feet, and all of that divided by 3960.
That just makes everything as clear as mud for me.
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