PTO clutch

[repete]

I have a L2550 and am using a tiller rated for 75 HP.

I am uncomfortable with using the belts to adjust the "slip" to protect the PTO tractor clutch (no clutch on the tiller input shaft).

I know I can get a clutch that fits onto my PTO shaft and goes inline to the tiller but how can I determine the correct spring pressure on this clutch to assure slippage occurs at this clutch and not the tractor's clutch?

Is there a FT LB setting so that I can use a torque wrench to adjust and set to slightly less than the internal tractor clutch?

 

[Bluegill2]

I wouldn't worry too much about the tiller breaking the tractor, it would likely just stall the engine. I would be concerned about the tractor having enough power to run the thing though.

 

[repete]

It does turn it, and it will kill the tractor which is what prompted the question.

 

[SPYDERLK]

I have a L2550 and am using a tiller rated for 75 HP.

I am uncomfortable with using the belts to adjust the "slip" to protect the PTO tractor clutch (no clutch on the tiller input shaft).

I know I can get a clutch that fits onto my PTO shaft and goes inline to the tiller but how can I determine the correct spring pressure on this clutch to assure slippage occurs at this clutch and not the tractor's clutch?

Is there a FT LB setting so that I can use a torque wrench to adjust and set to slightly less than the internal tractor clutch?

I have a 2550. The tractor PTO clutch will definitely kill the engine in a slow stall. In an abrupt stall [implement suddenly stops] it will slip some and protect the drivetrain. This is good, but you dont want it to keep slipping. Mine did once when my bushog hit a stump and stopped dead. I heard the engine lug down and then hold. Caught it quick and declutched. No harm done apparently - it was 10yrs ago.
...You can rely on your PTO clutch and your vigilance ... or you can get an external slip clutch as you mention. You would adjust it by heat. After installing, run your tiller at increasing load until the engine lugs slowly down to below 1500rpm. Did the external clutch heat up. Probably not. Loosen tension a bit on the clutch springs and repeat. Stop immediately if the engine wont lug down -- it means the external clutch is slipping. Once you find the slip point let it cool and then tighten the spring tension about 1 turn and try again. You want that clutch to run cool in normal smooth tilling [even to the point that the load will drastically slow the engine], but be warm when youre hitting rocks and roots.
...Is that a 6foot tiller? Larger?
larry

 

[repete]

Very good Larry. Thanks for the response. I have a point and shoot thermometer I think I will carry and watch the add on clutch. Perfect plan!

Thanks again!