I have an old BGX-1 that has never been fired but I want to use it on a 14 lb. 80" plane I'm using and I want unlimited vertical, do you think this combo will give me unlimited vertical performance?

-Kelly

We hate to say this, but there's no way to give you a particular answer. It all depends upon the airplane/engine/ propeller combination. For good hovering, you'll need low pitch, but some airplanes don't fly well with low-pitched propeller.

With the O.S. Max GSX-1, the engine runs best when propped so that peak RPM on the ground is between 8,000-9,000 RPM. To get a low-pitched prop to load the engine in this RPM range, you'll have to increase the diameter. This could cause problems with ground clearance.

The basic propeller we use for general-purpose use is an 18x8 prop. The engine will turn this in the low- to mid-8,000's with the stock muffler installed. Try higher-diameter and lower-pitched props to keep the RPM in the same range and see how it works. That's really the only way to find out which prop is right for you.

We hope you find this information helpful. Should you have any further questions or concerns, please do not hesitate to contact us at this email address. (Please be sure to copy all previous emails into any future questions.)

DID YOU KNOW that our web pages now all contain FAQs? (Frequently asked questions) Please drop by and take a look! We hope you'll find the information helpful and valuable to you.

Sincerely,

Bill Baxter, Manager
Hobby Services
1610 Interstate Dr.
Champaign, IL 61822
USA

Phone: 217 398-0007
Fax: 217 398-7721
Email: [email protected]
Web: http://www.bestrc.com