Race Twin Cam mileage

[wbmoore]

What kind of mileage does a full-race Twin Cam get ? I'm trying to figure out a fuel cell size. Thanks.

[rgh0]

it depends on the track but about 2 km per litre is what mine gets on the track. I use a 30 litre fuel cell which is plenty for the maximum length of races here.

cheers
Rohan

[2cams70]

I don't have any experience of race engine fuel consumption but that seems like a heck of a lot of fuel. A typical modern 600-700HP B double truck hauling 70 tonnes of freight returns a similar fuel consumption!

[nmauduit]

I don't have any experience of race engine fuel consumption but that seems like a heck of a lot of fuel. A typical modern 600-700HP B double truck hauling 70 tonnes of freight returns a similar fuel consumption!

Not in terms of mileage but time, my friend's 3.8l E-type (not full out prepared, say rally level) needs between 40 and 50l per racing hour, an other friend told me his Cheetah can use 60 to 80 l/h depending on enthusiasm...

all that without trailer.

[patrics]

Hi,
a 30 litre tank will hold enough to last a 40 minute race - I don't have experience for the 60 minute Classic K but my guess is you would need a bigger tank.

Regards
Steve

[toomspj]

40 l does me for a 1hr race which is normally under 80 miles ( there's pit stop to take into acccount). So, Rohan's rule of thumb would allow some margin. But if it's a particularly hard fought race the fuel warming light will be coming on by the end.
Paul

[wbmoore]

Thanks guys. That was a fun exercise. Kms/liter to miles/gallon to gallons/lap to laps/session to gallons/session to gallons/cell. Now I have to figure the shape and weight of the cell.

In the video below the driver mentions a 100 liter cell. Check it out.

http://www.motorsportmagazine.com/opini ... s-elan-26r

Thanks for the input. Brad Moore.

[prezoom]

Different race tracks had different amounts of fuel required. The amount of time spent at WOT usually made the difference. The old Riverside Raceway track was a real fuel guzzler, especially when using the long course. The amount of time spent at WOT, and at maximum rpm, was huge from turns 8 to 9, and 9 to 6. More slow turns, on and off the throttle, used increased mileage fuel wise. Never tried to compute mileage per gallon. Used pounds of fuel consumed.