Hybrid
New member
Don't know how I would feel about having a home made gas tank underneath my legs while flying around, got forbid you ever hit a rock and you blow your legs off after topping off! better put a guard underneath it.
If it's like my twin then there shouldn't be any pulses from the crank case, one piston goes up while the other goes down. Some engines have both movie in sync, tho.
I'd check to make absolutely sure it's past the butterfly, because if it's not then you won't get any vacuum or pulses and it won't work.
Usually those pumps are great, but you have to prime them with fuel (AFAIK).
I always pulse off the intake, Look at my post / pics above.
Aslong as its between the intake valve and the carb butterfly your fine.
I'm still jealous of how well equipped your school is. All we have is a manual vertical mill with 10 year old shavings embedded in the knee. (no one had used it forever until a friend and I dug out a bit this year)
Hey the project looks awesome, have you got the fuel problem fixed? i was going through the posts and not one single person put down this idea,
Use a car fuel pump with a return line feeding back to the tank, so it doesn't flood?
Like a 3 way t joiner before the carburetor or something, make it so the t joiner is flow through, with the return off the side if you can understand that.
Advantages would be when it sucked for gas it would have a constant pumping supply, just make sure the tank has a good breather.
Hope that helps.
Why would you have to remove the needle and float?
Have you tried using smaller line?
Cheers.
I just thought that smaller line can make for better velocity, im not going to put a bet on it was just an idea,
when you syfin liquid if the pipe is too big its hard to start? and smaller pipe seems to work better? anyway... just an idea..
A car fuel pump is running between 7-10 psi it will have enough pressure, when the float is down the needle is usually open and when it fills up and the float rises it cuts off supply, correct? If not 7-10 psi will easily push fuel into the fuel bowl, and when it fills up the excess fuel will flow back down to the tank, hey its simple, cheap and worth a try i reckon!
Hope it helps, cam.