Thread: Some contemplations on overdrive

Tweet

Originally Posted by rumrumm

You could run a 1:1 ratio in high gear if you have a five or six speed transmission with very low first gear. I think Richmond sets up their transmissions like that.

Yes, I posed this on a couple other forums and that is the best answer I got. Another post on a different forum has the link to Richmond gear and they are saying exactly what I thought.


http://www.richmondgear.com/07pdfs/RG23.pdf
What has amazed me is the range of responses and the fact that very few people understood what I was postulating. Maybe I just didn't explain it right.
thanks rumm

Willowbilly---The best thing about OD is when you pull a trailer or other load you leave it in high and don't cause excessive wear on the gears. You are right about a direct drive top gear being a slight amount more efficient at highway speeds, but face it, most vehicles these days never leave city limits so the OD hardly gets used. To have the same breakaway gearing with a tall rear gear you'd need some steep gearing in Low.