RCU Forums - SF120 performance

RCU Forums (https://www.rcuniverse.com/forum/)

- YS Engines Support (https://www.rcuniverse.com/forum/ys-engines-support-197/)

- - SF120 performance (https://www.rcuniverse.com/forum/ys-engines-support-197/1674910-sf120-performance.html)

DHammer

03-30-2004 07:21 PM

SF120 performance

Hello Dave, quick question. I have a SF120, sweetest running engine in my fleet. I did have it in a plane that weighed 8 1/2 lbs. Was swinging a 16X8 at 9200. Gave me unlimited performance on the plane. It's been idle for a year and now I want to put it in a plane that weighs in about 9 3/4 lbs. Is the 9 3/4 lb plane too much for this engine swinging the same size prop?
Thanks,
Dhammer

Dave Shadel

03-31-2004 09:19 AM

RE: SF120 performance

Depends on what type and how much wing loading. A Cub at that weight vs. a pattern airplane at that weight will be two totally different animals.

DHammer

03-31-2004 08:33 PM

RE: SF120 performance

Good point. Fun fly 3D type with a wing loading right about 16OZ per Sq Ft.

Dave Shadel

04-01-2004 11:02 AM

RE: SF120 performance

I'd say it will work fine. You may have to go with a larger diameter, lower pitched prop. Be ready to experiment.

DHammer

04-01-2004 07:46 PM

RE: SF120 performance

Thanks Dave, Will do.
Dhammer

Dave Shadel

04-01-2004 08:04 PM

RE: SF120 performance

Good Flying!

All times are GMT -8. The time now is 08:08 PM.