Re: Help with 34 Club Sedan, please!

Posted by PackardV8 On 2009/1/11 11:06:49

" 5 inch stroke and 11 inch long connecting rod, 1.2:1 rod ratio, this engine is at 1450 feet/second @ 3750"

That's not what i get.

ONE revolution of the engine moves the piston 10 inches. 5" down + 5 inches up for one rev.

10" x 3750 rev/min = 37500 inches/min. 37500in/min//12in/foot = 3125 ft/min. 3125//60 sec/min = 52 feet/second.

One of us is wrong. Probably me.

Anyway, compare that to a relatively common or average post war stroke of about 3.5 inches. I get 36 feet/second. About 30% reduction from the 5" stroke.


Keep us posted on the sucess of your project. When will make the first test run????