Snoopy11 5,713 #26 Posted October 26, 2021 15 minutes ago, ebinmaine said: I'm not sure I see how that's more or less valid when comparing the belt slip at high RPM. I'd like a correct technical explanation if anyone has it. I think belt deflection is in play here... That, coupled with the amount of torque at lower rpms may put more stress on the pto... Don 1 Share this post Link to post Share on other sites
Bill D 1,599 #27 Posted October 26, 2021 I usually engage my clutch slowly with the throttle wide open. On my Bobcat deck this will be an absolute necessity. The PTO belt and clutch will slip until everything comes up to speed. I plan to upgrade to a 5/8" PTO to deck belt if I can. Share this post Link to post Share on other sites
Bill D 1,599 #28 Posted October 26, 2021 44 minutes ago, Snoopy11 said: You talkin something like this? Don Do you have a source for those? Thanks. 1 Share this post Link to post Share on other sites
Snoopy11 5,713 #29 Posted October 26, 2021 1 minute ago, Bill D said: Do you have a source for those? Thanks. I am looking here: https://www.ebay.com/itm/393209141459?chn=ps&mkevt=1&mkcid=28 And also: https://ogura-clutch.com/files/pdfIMP/softstart2.pdf Don Share this post Link to post Share on other sites
pfrederi 17,146 #30 Posted October 26, 2021 (edited) For some electric PTOs (Think John Deere) manual says engine at full throttle then engage. I do not think there is a big engineering /wear issue here. Unless the engine is warmed up if you engage the PTO at lower throttle she can stumble or even stall. Full throttle engagement avoids this issue (and complaints to the the dealer...maybe in exchange for advanced wear that won't manifest itself until long after warranty expires... Edited October 26, 2021 by pfrederi 3 Share this post Link to post Share on other sites
Snoopy11 5,713 #31 Posted October 26, 2021 1 minute ago, pfrederi said: she can stumble or even stall You are right there... I have tried it myself... it does stall. Don Share this post Link to post Share on other sites
johnnymag3 2,441 #32 Posted October 26, 2021 Trying to see or grasp belt slip, when the belt doesnt slip.. its the disc wear that appears to be more prevalent....as for belt slip...there should be NONE if you have your deck belt tightened as per manual Share this post Link to post Share on other sites
ebinmaine 63,089 #33 Posted October 26, 2021 3 minutes ago, johnnymag3 said: Trying to see or grasp belt slip, when the belt doesnt slip.. its the disc wear that appears to be more prevalent....as for belt slip...there should be NONE if you have your deck belt tightened as per manual I have no mowing decks. The chipper shredder has a very long belt. The front mounted generators are a similar straight belted setup but a much shorter belt. Being shorter and also solidly bolted the generator belt can be made tight. The chipper literally hangs off the front of the tractor by 2 pins with no way to get the (84"?) Straight belt properly tightened. If I engage the chipper shredder belt anywhere near full throttle the belt leaves town fast. 1 1 Share this post Link to post Share on other sites
johnnymag3 2,441 #34 Posted October 26, 2021 So after reading this, I see this is a situational situation. A case of into it, or onto it....If you will... My deck belts will not ever slip....but I guess if you have a 108 inch belt ...or thereabouts...it may have to slip, as there is no room for tension to make it secure to its implement..... Share this post Link to post Share on other sites
pfrederi 17,146 #35 Posted October 26, 2021 If you make the belts super tight you eliminate slippage...but what about wear on the bearings... There is always a weak point somewhere Share this post Link to post Share on other sites
johnnymag3 2,441 #36 Posted October 26, 2021 26 minutes ago, pfrederi said: If you make the belts super tight you eliminate slippage...but what about wear on the bearings... There is always a weak point somewhere There is a setting, or dimension between..... for belt tightness...its in the manual...when you squeeze the belt halfway between the PTO and the Mule....there is a number you should be at...No wear on belt, or bearing,,,,,,or excessive wear I should say. It is not about the belt being too tight to not slip, but having it set up right. Im into my Tractors 40 years...never had a belt or bearing issue....I also do regular and over the top maintenance, with superior Lubricants......It does pay off....3 FOLD 2 Share this post Link to post Share on other sites
adsm08 1,431 #37 Posted October 27, 2021 I let mine out slowly, but being that my primary mower is an 855, so foot operated PTO, and most of my vehicles are stick, it's kind of a force of habit. Share this post Link to post Share on other sites
John c 70 #38 Posted October 27, 2021 I engage mine at WOT as fast as the engine will allow Share this post Link to post Share on other sites
