There's umpty gazillion sites with torque calculations, but what I am looking for is a bit different. I'm making a piece of clutch linkage, the lever has to be 7" long to fit where I need it, the input travel distance is 1.250" and the output travel distance needs to be .625". If this is done correctly, the required input torque (pedal effort) will take care of itself.
So my question: what calculation do I use to tell me where to put the fulcrum point? From what I see, since .625 is 1/2 of 1.250 means a 2:1 ratio, meaning that I divide 7 by 3, which gives me 2.333 (to infinity) meaning the fulcrum point will be 2.33" from the output end of the lever and 4.667" from the input. Am I right or am I way off base?
RossD
Reader
5/10/09 7:00 p.m.
Yeah that sounds right. I drew it in cad quick to make sure and it was spot on.
just for fun:
Jensenman wrote:
There's umpty gazillion sites with torque calculations, but what I am looking for is a bit different. I'm making a piece of clutch linkage, the lever has to be 7" long to fit where I need it, the input travel distance is 1.250" and the output travel distance needs to be .625". If this is done correctly, the required input torque (pedal effort) will take care of itself.
So my question: what calculation do I use to tell me where to put the fulcrum point? From what I see, since .625 is 1/2 of 1.250 means a 2:1 ratio, meaning that I divide 7 by 3, which gives me 2.333 (to infinity) meaning the fulcrum point will be 2.33" from the output end of the lever and 4.667" from the input. Am I right or am I way off base?
I don't remember using any of these high tech calculations when working on the clutch linkage for the Lemons-turd. I seem to remember a plasma cutter and a welder and not much else....Whats up with that....
Ross, thanks for confirming my calculations.
Toyman, kiss my azz. That was butchery, not race car buildin'. 
