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1250 PTO Speed ?


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#1 PennsylvaniaNewt OFFLINE  

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Posted September 03, 2011 - 07:23 PM

What is the pto speed on the 1250? Is it the same as the engine speed (are both pulleys the same size drive and driven)? Just wondering for accessory reasons.

#2 wilberj ONLINE  

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Posted September 03, 2011 - 07:33 PM

What are you looking to run off it?

#3 PennsylvaniaNewt OFFLINE  

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Posted September 03, 2011 - 09:25 PM

Who knows? Maybe a generator off the front one day? Just trying to learn my machine and was wondering if anyone knew if it was the same as engine speed!

#4 Bolens 1000 ONLINE  

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Posted September 05, 2011 - 03:18 PM

I believe the PTO speed is 2000 rpm

#5 Bruce Dorsi OFFLINE  

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Posted September 06, 2011 - 06:46 AM

What is the pto speed on the 1250? Is it the same as the engine speed (are both pulleys the same size drive and driven)?


Perhaps you can answer those questions for yourself, and the rest of us.

I'm not trying to be disrespectful, but you have access to both pulleys to measure and compare them.

As you are aware, the PTO speed will vary depending on the engine speed. ....The ratio of the two pulleys determines whether the PTO is overdriven, underdriven, or if it matches the engine rpm.
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#6 PennsylvaniaNewt OFFLINE  

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Posted September 06, 2011 - 08:33 PM

Actually when I originally asked I didn't but now that I do I will! :smile1:

#7 Guest_jdecker94_*

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Posted September 07, 2011 - 06:50 PM

bruce explain how the hell you can figure out if the pto speed matches the engine speed by measuring 2 pulleys =.=

#8 Bolens 1000 OFFLINE  

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Posted September 07, 2011 - 07:35 PM

If the pulleys are the same size the Ratio is 1:1 If the Pulleys are Different size then it is likely 2000RPM's at full throttle
I believe most if not all the largeframe PTO speeds were 2000 rpm's

#9 Guest_jdecker94_*

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Posted September 08, 2011 - 06:41 PM

so bolens 1k. your saying if the pulley on the flywheel is lets say 6 inches hypothetically, which e all know its smaller. and the PTO pulley is 6 inches. at full engine RPM the pto speed would match engine speed? doesnt sound right to me.

#10 PennsylvaniaNewt ONLINE  

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Posted September 08, 2011 - 07:31 PM

Check this caluclator out

Pulley And Belt Information Calculator

#11 bhts OFFLINE  

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Posted September 08, 2011 - 07:47 PM

If the pulleys are the same size the Ratio is 1:1 If the Pulleys are Different size then it is likely 2000RPM's at full throttle
I believe most if not all the largeframe PTO speeds were 2000 rpm's



:ditto:
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#12 wilberj OFFLINE  

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Posted September 08, 2011 - 08:40 PM

so bolens 1k. your saying if the pulley on the flywheel is lets say 6 inches hypothetically, which e all know its smaller. and the PTO pulley is 6 inches. at full engine RPM the pto speed would match engine speed? doesnt sound right to me.


If it's 1 to 1 its the same.

So a 6" pulley is terning at 2000 RPM the other 6" pulley is also terning 2000 RPM.
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#13 Guest_jdecker94_*

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Posted September 08, 2011 - 09:53 PM

but a bigger pulley takes more belt isnt it geared lower with bigger pulleys?

#14 speedyg OFFLINE  

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Posted September 09, 2011 - 12:49 AM

jdecker94, The pulley on the motor turns at the same rpm as the motor itself, regardless of the pulley size. In the above example if the motor ran at 2000rpm with a 6'' pulley with a 12'' pto pulley, then the pto would rotate at 1000rpm a 2:1 ratio. The motor pulley would rotate twice to every one rotation of the larger pto pulley, thus reducing the rpm by half.
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#15 PennsylvaniaNewt ONLINE  

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Posted September 17, 2011 - 07:39 PM

Well I measured the pulleys today the engine (drive) pulley is 3.3" and the PTO (driven) pulley is 6.1" So using the calculator it indicates a PTO speed of 2,000 RPM's.




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