Quote:
Originally Posted by Renze  This is actually because old tractors had a single PTO: when you pressed the clutch pedal, it would only disconnect the engine from the rest of the transmission, but leave the PTO and wheel drive locked together. With a dual stage clutch, the PTO and gearbox are not locked together anymore when you press the PTO clutch.
I have never worked with tractors without dual stage clutches... talking 1965 and newer. |
I think you are only partially correct. A simple dual stage clutch has two stages of engage with the flywheel. One stage for the motive power and one stage for the
PTO power. If you step on the clutch all the way down, a rotary mower will still power the transmission from the
PTO. Same as a single stage clutch with direct
PTO.
You may be thinking of an independant
PTO with a dual stage clutch. That would fit the experience you describe. It has a built in one way sprag to stop the power from the
PTO going back into the transmission.