firasf1dream wrote:Speed_Demon wrote:firasf1dream wrote:
it's the air intake opening
From the picture in the manual you linked..it looked like it had an air cleaner box attached to the motor. If your asking was size hole for that....I'd make the hole 3mm (1/8") clearance on all sides of the filter box. This will allow the engine to move and not damage the body or dislodge the air cleaner.
thank you Speed_Demon for your reply, can you please clarify what do you mean ?
what i am doing is, i am using a tuned version of that engine which has 30 to 40% of more power, and i will be making an air intake box similar to the Formula 1 car, and in the middle of the air box i will be putting the filter, (the original air box which i have is this one,
http://radiocontrolracing.co.uk/WebRoot ... 0666_m.jpg
so what i want to know is how to calculate the hole above the driver's head in the formula 1 car, and then the hole in the middle of the filter
OK, You want to make a F1 style scoop, It really doesn't have to be too big, I haven't found any calculations/formulas for it. I did find a good article on the theories behind the development/design changes for drag racing. I think it might help with you'r design.
(
http://www.onallcylinders.com/2015/08/0 ... echnology/)
You don't want it to be strong vacuum at Idle, here is a calculator for throttle body sizing
(
http://www.hipermath.com/engines/throttle_body_size) could use that and add 20% so their wouldn't be a restriction.
If you made it too large you might have to worry about the air pressure tearing it off. Happened with the 68 hurst/hemi darts and cudas. Plus making it NOT too big will prevent debris/water etc. from getting caught.
The Scoop itself should be a gradual taper, to limit boundary layer separation/turbulence inside the scoop. The taper would allow the air to slow down and pressurize...kind of like the snail on a turbo.
