Re: higher RPM or higher gear?

Posted by G Taylor......increased torque=wear on April 30, 2003 at 09:24:28 from (64.10.143.169):

In Reply to: higher RPM or higher gear? posted by Farmer in the Dells (WI) on April 30, 2003 at 06:52:19:

Diesels are usually rated for continuous use at 80 to 85% of max available torque output at rpms between peak torque and peak HP ratings
. The DD two strokes aside as they develop peak torque at all rpms and confuse some operators.
Pounding along with fuel delivery at 100% and at less than rated max rpm carries higher torque loads on all drive components. Compared to higher rpms and less torque to make the same power/ doing the same amount of work per hour.
Yes the rings and bearing travel farther to do the same work at higher rpms but the stress is less.
I've often heard some proud owner of a restored tractor labouring his engine hard at low to mid rpms while he tell's me how he's making her last longer. The almighty gave me the strength not to strangle one of the stupid SOB's after explaining it twice, and he couldn't or wouldn't grasp the concept.
Even related it to pedalling a 15 speed in high gear vs. say 7th gear while travelling at the same 8mph. His only answer was bikes only had one speed when he was a kid.

Follow Ups:

Post A Followup Name: E-Mail: Subject: Re: Re: higher RPM or higher gear? Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]