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Re: 300 F pto

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D Slater

08-10-2014 10:35:09

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Getting rusty on my formulas anymore, but if I figured correct its about 781 PTO RPM at 1750 engine RPM. Outside chance they could have changed the drive gears in the center housing to match a clutch type PTO. But if the cover under the big drive gear is a 300 number I would say not. Not sure if the lower 460 clutch type drive gear will clear in a 300 housing without grinding. If you don"t need full power on the PTO you could get by at lower RPM without over speeding a implement that may cause damage or be a safety concern.

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08-10-2014 15:29:45

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 Re: 300 F pto in reply to D Slater, 08-10-2014 10:35:09  
That's quite an increase. I think I will put it on a dyno to check the speed just to see what it is.

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D Slater

08-10-2014 17:17:20

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 Re: 300 F pto in reply to bigboreG, 08-10-2014 15:29:45  
I didn't take the time to look up if I remembered the correct math to figure it. You can check, engine crankshaft speed is turning a 25 tooth gear on a shaft and the 25 is driving a 56 tooth gear turning shafts to the PTO input. Output speed of the clutch type PTO is the same as the input unless slippage. Planet PTO has some gear reduction inside it.

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