O.S. .70 Ultimate 4-Stroke problems
 

Bill,

I had high expectations for this engine after all the great advertising that GP did. I could never get this engine to run smoothly. It want's to bog down whenever I change the throttle from low to high and even sometimes on reducing throttle. This engines was supposed to be great for aerobatic planes that needed an engine with great response in any attitude. I have had the fuel lines blow off, tanks burst, I have taped the tanks with nylon strapping tape, clamped the fuel lines, made every adjustment I could think of, tried YS 20/20 fuel as well as a few others. I have never had an engine run as badly as this one. I can't put it in a plane, I am afraid to fly with it. I have had the engine for over a year now so I doubt it is in warranty (I set it on the shelf and tried to not think about it like a fool). Anyhow, I have the original receipt and box, etc. Is there anything that can be done with this engine? I see they have been removed from production.
Thanks...

RE: O.S. .70 Ultimate 4-Stroke problems
 

The warranty is good for two years. If you send the engine to us, we'll be glad to look at it to see how we can help you.

Please ship your item to:

Hobby Services
3002 N. Apollo Dr. Suite 1
Champaign, IL 61822
USA

Package your item(s) carefully against shipping hazards. Please make sure it's insured against loss or damage in shipping. Include a letter with your name, return shipping address, daytime telephone #, Fax, Email (as much contact information as possible), and a detailed description of the problems you are having with your equipment. If your item is still within the warranty period, please enclose a photocopy of the purchase receipt to validate any warranty claims. As soon as it arrives, we'll take care of you as quickly as possible.

RE: O.S. .70 Ultimate 4-Stroke problems
 

Thanks... I think I will send it in instead of trying to fix it myself.