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Scale Fuel Consumption...

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Old 09-04-2010, 01:39 AM
  #1
tommygun32
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Default Scale Fuel Consumption...

I just randomly came up with a thought (don't ask me where this stuff comes from)

At what scale in planes, heli's, cars, boats, etc does the fuel consumption become scale to their 1:1 counterpart?

Or is this a completely unrealistic probability?

Thanks
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Old 09-06-2010, 12:43 PM
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Default RE: Scale Fuel Consumption...

Unrealistic, generally. Wings becomes more efficient as sizes go up, so you can't really replicate that in a model. Engines become more efficient in bigger sizes, along with allowing for more efficient designs such as fuel injection. Models also have to be overpowered compared to the full scale counterparts because the wind we fly in is so much faster relative to the size and speed of the airplane, not to mention the ability to pull out of mistakes that a full scale pilot would not have gotten into.
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Old 09-07-2010, 02:07 AM
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Default RE: Scale Fuel Consumption...

Thanks for that jester. Good points. [sm=thumbup.gif]
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Old 09-07-2010, 08:13 AM
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Default RE: Scale Fuel Consumption...

Roughly to the cube of the size of the plane. So 25% would be .25*.25*.25 = .015625. So a full scale plane that burns ten gallons a scale model would burn .15 gallons an hour or 19 ounces of gas. Of course the scale model will do worse because it is a two stroke with some oil in the fuel. Also there are some inefficiencies due to the smaller size. So you could about double this. If glow about 4-6 times this. And again this is assuming that the power is scaled to the full size. We normally overpower our scale planes compared to the full scale..
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Old 09-07-2010, 03:11 PM
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Default RE: Scale Fuel Consumption...

Thank you Sport_Pilot

I know it was a weird question, however, I do appreciate the knowlegeable (?spelling?) responses.

Didn't realize there was a mathematical formula for it.

I understand that I'm presenting this question in the 'club house' which is more based on the aerial side of this addiction, but what about boat / car / etc scale? In your opinion, is there a possible difference?
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Old 09-07-2010, 03:29 PM
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Default RE: Scale Fuel Consumption...

Quote:
(?spelling?)
My spelling isn't that bad. Until RCU has a spelling checker I will be misspelling words from time to time.
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Old 09-07-2010, 07:16 PM
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Default RE: Scale Fuel Consumption...

Sport I think he was questioning his spelling of "knowlegeable"
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Old 09-08-2010, 12:22 AM
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Default RE: Scale Fuel Consumption...

very correct cav8r...

Quote:
ORIGINAL: cfircav8r

Sport I think he was questioning his spelling of ''knowlegeable''
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Old 09-10-2010, 08:32 AM
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Default RE: Scale Fuel Consumption...

LOL sorry. But my spelling probably does need improvement.
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