PTO speeds

[Marcle]

Someone asked elsewhere about engine speeds against PTO speeds, so....

I've just been and tested my TX2140. These readings will give you a good idea what to expect...

Engine RPM 1026 (measured on the end of the crankshaft)
PTO gear 1 =180 RPM
PTO gear 2 =296 RPM
PTO gear 3 =470 RPM

Engine RPM 1950
PTO gear 1 =340 RPM
PTO gear 2 =540 RPM
PTO gear 3 =820 RPM

My tacho is not calibrated, so accept my readings for what they are as a guide.

 

[part-time-Farmer-NC]

I only have a single PTO gear (I think) with my kioti. I hadn't verified it but it says at 2500 rpms its 540 rpm.

 

[masseyrider]

My Masseys hit 540 on the PTO at aboot 1750-1800 rpm.
Different engines might reach 540 at different rpms because of design and torque curves.
Old school Massey Perkin's engines were long stroke and ran at lower RPMs for 540 on the PTO.
John Deeres tended to be short stroke and ran at higher RPMs to reach 540 on the PTO.
What the story is with modern makes and models I can't say with any expertise. But don't expect 540 on the PTO to be reached at the same engine RPM from make to make or even model to model.

 

[scootr]

My Kubota has a 540 PTO mark at 2200 rpms HST drive

 

[chrismac]

Someone asked elsewhere about engine speeds against PTO speeds, so....

I've just been and tested my TX2140. These readings will give you a good idea what to expect...

Engine RPM 1026 (measured on the end of the crankshaft)
PTO gear 1 =180 RPM
PTO gear 2 =296 RPM
PTO gear 3 =470 RPM

Engine RPM 1950
PTO gear 1 =340 RPM
PTO gear 2 =540 RPM
PTO gear 3 =820 RPM

My tacho is not calibrated, so accept my readings for what they are as a guide.

Thats interesting, I thought gear 1 was 540 pto speed. maybe this is why my finishing mower is not cutting 100% although its doing a fairly good job. I must up it to pto 2 and see. thanks.

 

[WinterDeere]

Thats interesting, I thought gear 1 was 540 pto speed. maybe this is why my finishing mower is not cutting 100% although its doing a fairly good job. I must up it to pto 2 and see. thanks.

There are some mighty inexpensive digital optical tach's on Amazon and eBay, which will serve you well. Stick a piece of white tape on the PTO shaft, point the tach at it, and you'll know your exact PTO speed. Just make sure the one you're buying covers the range of speeds you're interested in measuring.

At least 300 to 4000 RPM would be useful around any shop running motors, etc. Or make that 20,000+ RPM if you want to use it to check speeds on shapers and larger router bits.

 

[chrismac]

There are some mighty inexpensive digital optical tach's on Amazon and eBay, which will serve you well. Stick a piece of white tape on the PTO shaft, point the tach at it, and you'll know your exact PTO speed. Just make sure the one you're buying covers the range of speeds you're interested in measuring.

At least 300 to 4000 RPM would be useful around any shop running motors, etc. Or make that 20,000+ RPM if you want to use it to check speeds on shapers and larger router bits.

Its been a while, I have an analogue taco, but it does not read in reverse (the direction the pto shaft spins) if I remember correctly I did use the wheel attachment, thanks

 

[WinterDeere]

Its been a while, I have an analogue taco, but it does not read in reverse (the direction the pto shaft spins) if I remember correctly I did use the wheel attachment, thanks

This is the one I have. $25 gets the job done. Been using the same one many times per year for about 10 years, but I think I did have to replace or repair the 9V battery connector pigtail once, a few years back.

Amazon.com

 

[BigGG]

There are some mighty inexpensive digital optical tach's on Amazon and eBay, which will serve you well. Stick a piece of white tape on the PTO shaft, point the tach at it, and you'll know your exact PTO speed. Just make sure the one you're buying covers the range of speeds you're interested in measuring.

At least 300 to 4000 RPM would be useful around any shop running motors, etc. Or make that 20,000+ RPM if you want to use it to check speeds on shapers and larger router bits.

There's an app (of course) called Strobily available for Android. I'm not sure I'd want to get that close to a rotary cutter drive shaft to use it.

 

[WinterDeere]

There's an app (of course) called Strobily available for Android...

There I go, playing the dinosaur again...