Cruise speed...
#13
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find out where max tourq is and that will be the ideal rpm range to cruise at . most big block's seem to be around the 4000 mark give or take a few hundred rpm
#15
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What Prop pitch (1) and Drive Ratio (2) are you going to use?
Then, Cruise RPM x (1) / (2) / 1056 ( I use 1056 cause it usually gets me very close without having to calculate slip )
that formula will get you real close to your real world #'s
Then, Cruise RPM x (1) / (2) / 1056 ( I use 1056 cause it usually gets me very close without having to calculate slip )
that formula will get you real close to your real world #'s
#18
Charter Member # 55
Charter Member
1.36's spinning a 26" prop and 1.50's spinning 29" prop will still yield the same cruise and wot speeds within a couple mph.
1.36 gears might be just a tad stronger, but nothing huge.
#19
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Join Date: Dec 2004
Location: shreveport, LA
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do you know for a fact that the 1.36 gears are stronger than the 1.5's? i thought it was the other way around because i thought the 1.5 gears were slightly bigger. not sure tho
help mr gadgets????
help mr gadgets????
Last edited by La/stryker; 03-24-2013 at 02:47 AM.
#20
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Yes, the 1:36's are slightly larger. Correct, he will have to decrease pitch to get his his desired RPM. 1:36's are like starting off in second gear in a car, once you put it in gear you are moving at just idle! So right out of the gate you already are are up on a 1:50 operator. top end is also good for 3 to 4mph