Backing in to reduction ratios

Greg Mueller · Posts: 27 Join date: 2008-07-22

I wonder if there is a program????

I have a 60x28 prop
I have the Kohler 20hp@3600 (maybe more hp if I fiddle with it)

I wonder if there is a program that will tell me what reduction would be the best for this combo?

kmccune · Posts: 12 Join date: 2008-08-13

Try prop design
http://www.mail2600.com/PropDesign/index.html
I also like, though it is for RC airplanes, you can scale it up.
http://www.gylesaero.com/freeware/propcalc.shtml
Valley engineering also has some info available on line.

Kevin

Greg Mueller · Posts: 27 Join date: 2008-07-22

Thanks Kevin

kmccune · Posts: 12 Join date: 2008-08-13

No problem, I also have one called Prop Design by Edwin Dokus EAA # 51432, but I can seem to remeber where I got it.
Kevin