jtprouty

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Hi All,

Does anyone know what the best approach is to increasing fuel efficiency on a gasser? I'd like to get 10 hr + on one without having to greatly increase the amount of fuel onboard.

Happy flying,

Jim

Kris^

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uh . . .LOTS more pitch on the prop, and lean out the low-end needle and make the plane fly at 2 throttle trim clicks above idle. . .

I can fly a BME110 for over an hour on 32 ounces of gas that way.

Diablo-RCU

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OK, I'll bite. Why ten hours of flight time? Maynard Hill did it with a converted OS 61 4-stroke running on gas/oil and CH ignition. What exactly are you trying to do?

jtprouty

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I need to be able to carry a payload for approximately 1300 miles for a test. I know the 31cc Honda engine would be able to make the trip but I'd have to launch the plane from the top of a car to get it up to flying speed with a full fuel load and payload on board.

Happy flying,

Jim

ernie58

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Is that distance one way or closed course? I think I can find you 10hrs on a closed course.

jtprouty

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Hi Ernie,

It's a round trip flight of ~1300 miles.

Happy flying,

Jim

ernie58

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Don't know about 1300 miles, but I have 9-10hrs at 60knots available if your payload is less than 50 pounds. I could possibly fly longer of I swap payload for gas. If interested, send me a personal mail. This is beginning to sound like a work conversation instead of my hobby.....

mglavin

My Feedback: (31)

Were going to need some specific info to offer ideas... Like maybe engine make,size and prop used, ignition, exhaust system, fuel load, current performance data, air frame details... Is speed a factor or only time?

Kris^

My Feedback: (1)

I find myself remembering 9-11 2001. . again.

A GPS guided drone RC aircraft is very simple to make these days . .you just gotta wonder about a persons motivations when they start asking questions like this.

jtprouty

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Kris,

Just the opposite atcually. I'm doing research for colleges, the US military, and for weather (hurricane) research. I make aircraft that carry their payloads for testing purposes. They need more range and I'm having trouble coming up with an engine that will perform as needed. I prefer a 4-stroke but the gassers on the market today are too heavy to be converted.

Happy flying,

Jim

yakman

Since 9/11 I have waited for someone to mention the possible use of rc planes in terrorist activities. Forget it. If the powers that be start to consider it a threat(and it really is) then you can start to wave goodbye to our hobby. I dont want to sound like a spoil sport, but.

jtprouty

My Feedback: (1)

Yakman,

You're 100% correct. One of the tests that I'm currently involved in is how to counter a small UAV that is flying on autopilot without actually having to shoot at it. One of the test criteria is that commercially available off-the-shelf (COTS) equipment has to be used. Basically something that you or I could purchase without raising any eyebrows. Pretty neat stuff and the fact that it can be used as a weapon is being seriously looked into by the US government.

Happy flying,

Jim