Fuel calculation

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Stayt`ie
Posts: 1041
Joined: Fri May 13, 2005 11:47 pm
Location: Mackay

Fuel calculation

Post by Stayt`ie »

have just spent the last cuppla hours trying to find the "fuel usage calculation" posted on this site by, i think, Greg Watters, :? ,, can somewon help me out here please :lol:
First Australian to ride a motorcycle over 200mph at Bonneville,,,
penny
Posts: 335
Joined: Mon Feb 26, 2007 8:30 pm
Location: adelaide

the gas can test

Post by penny »

To produce 1 hosepower for 1 hour requires approximately 0.5 lbs of gasoline. If you ran a single-cylinder engine, like the one in your lawnmower under load of 1 horspower for 1 hour and weighed the fuel tank before and after, the tank would weigh approximately 0.5-lb (five tenths of a pound) lighter. Therfore the equastion for fuel flow is 1H.P.= 0.5-lb of fuel, per hour. This expressed on the dyno sheet as B.S.F.C (Brake Specifique Fuel Consumption). Incidently the figure for alcohol is approx 1-lb of fuel, per h.p. per hour. barry grants gas can test.
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Greg Watters
Posts: 760
Joined: Mon Sep 27, 2004 8:57 pm

Post by Greg Watters »

this one :?: http://www.witchhunter.com/injectorcalc1.php4

i just rough it out at around 5cc/hp/min on gasoline and 12.5cc/min methanol,and always allow some spare when figuring injector size or fuel pump flow. Also blown is a bit thirsty so NA could probably reduce those figures a little
Stayt`ie
Posts: 1041
Joined: Fri May 13, 2005 11:47 pm
Location: Mackay

Post by Stayt`ie »

Thankyou Gentleman 8)
First Australian to ride a motorcycle over 200mph at Bonneville,,,
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