Bill Rusk
BENEFACTOR
Sandpoint, Idaho
Question
Do the hot-rodded engines really put out more power to the prop? I have about come to the conclusion that you can spout all the dyno numbers all you want but if that Hp can not be translated into power at the prop it is pretty well wasted. Will the hot-rodded motor spin the same prop faster? Will it spin more pitch the same RPM? Has anyone compared a new standard 0-360 (or 0-320) to a 0-375 or hot-rodded 0-360 with a pull test? I know we have compared props.
I would like to see a standard, say less than 100 hrs 0-360 engine, same exhaust system pull test with a given prop. Now, take that same prop off and put it on a hot-rodded motor, same exhaust, and do the same pull test.
We have slowly developed some pretty good prop numbers. I am interested in the engine numbers.
Perhaps guys like Peppard, Mike, Crash, Calkins have done this and I have missed it. No speculation please, just the facts. Is anyone in a position to do this? You have a standard motor and your hangar mate has a hot-rodded motor so you could swap props with a pull test? Obviously we would need to limit the variables as much as possible. Not fair to compare a worn out motor to a new one, with different exhaust, etc.
Are the hot-rodded motors really worth it and are they really getting more Hp to the prop?
Bill
Do the hot-rodded engines really put out more power to the prop? I have about come to the conclusion that you can spout all the dyno numbers all you want but if that Hp can not be translated into power at the prop it is pretty well wasted. Will the hot-rodded motor spin the same prop faster? Will it spin more pitch the same RPM? Has anyone compared a new standard 0-360 (or 0-320) to a 0-375 or hot-rodded 0-360 with a pull test? I know we have compared props.
I would like to see a standard, say less than 100 hrs 0-360 engine, same exhaust system pull test with a given prop. Now, take that same prop off and put it on a hot-rodded motor, same exhaust, and do the same pull test.
We have slowly developed some pretty good prop numbers. I am interested in the engine numbers.
Perhaps guys like Peppard, Mike, Crash, Calkins have done this and I have missed it. No speculation please, just the facts. Is anyone in a position to do this? You have a standard motor and your hangar mate has a hot-rodded motor so you could swap props with a pull test? Obviously we would need to limit the variables as much as possible. Not fair to compare a worn out motor to a new one, with different exhaust, etc.
Are the hot-rodded motors really worth it and are they really getting more Hp to the prop?
Bill