Quote:
Originally posted by F18Viper
I figured out that the only thing i really need is a fuel primer pump. Looked on ebay and what did i find? An aviation fuel pump for only 50 bux.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2428531979
Now the only thing left to figure out is how to implement a throttle control system with the pump. I was thinking eaither get a valve between the pump and the nozzle, or just control the pump's amprage.
Sorry, no pics atm, but i will try to get some.
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F16 - That pump is 61 years old and the seller doesn't even say if it works or the pressure rating. An aircraft primer pump is not high pressure, all it is used for is squirt a small amount of fuel into the cylinders to give a rich mixture to to start a cold engine. And it is 24 VDC. Take your fifty bucks and go to a junk yard and buy a 12 volt pump from almost any fuel injected car and you will be better off. You might be able use a higher current fan control type circuit to control the pump.
For throttle you could make 2 or even three valved fuel rails with a different number of nozzles, say 3 for an idle rail, 6 for mid-range and maybe 8 for full throttle. Vary speed by using any combination of the rails. The nozzles could be simply very small, like pinholes, drilled into the fuel rails. Just bouncing ideas.