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Crazy 04-11-2004 05:30 PM

Electronic Injection
Im thinking about designing and testing an electronic injection system for all bikes. Well all bikes that have a lighting coil at this time. My goal would be to be able to be able to incorperate it with the CDI and be able to adjust timing along with exact fuel control so that you would never have to change a jet.

Does anybody think this would be worthwhile? If so ill start designing.

Let me know what you think of the idea and what you think also could cause problems or come into play.

Honda_Rider_XR 04-11-2004 05:50 PM

Re: Electronic Injection
Sounds complicated..

YzRacer#53 04-11-2004 06:34 PM

Re: Electronic Injection
If its possible which it is it would be worth it totally, you could make a lot of money.

ThumperCRF250 04-11-2004 07:09 PM

Re: Electronic Injection
im with honda_rider and YZracer both ,, would it replace anything , or would it just attach to a part of the bike

dirtytrixx400 04-11-2004 07:11 PM

Re: Electronic Injection
well...good idea...but its been on the drawing boards for some time.i remember seeing a show on discovery channel(i think it was)several years ago about direct injection for bikes...offroad bikes in particular...they were testing a cr250 honda in australia with their system(i can't remember if it was a honda co. project or if it was a co-op deal with another co.). i do remember that they were claiming a huge increase in power and mpg,and a huge decrease in emissions. i recently ran across this site...i believe this is what the future holds for us.

YzRacer#53 04-11-2004 07:17 PM

Re: Electronic Injection
Nice link

dirtytrixx400 04-11-2004 07:21 PM

Re: Electronic Injection
wanted too add....haven't you wondered why the new bikes all are using more "smart"cdi's and exhaust valve controls and throttle position sensor's? >>>>>pre-runner systems for fuel injection!!

YzRacer#53 04-11-2004 07:27 PM

Re: Electronic Injection
They will be fuel injected soon I cant wait to see a efi 2 stroke it would HAUL A$$

Jaybird 04-11-2004 07:45 PM

Re: Electronic Injection
Direct Injection is already a reality on dirt bikes.
I got to see a prototype last fall on a 250exc.

The thing is really a great idea, but like most things there are downsides. The DI gives up a slight bit of HP on the top end, but this is only compared to a properly tuned, conventional carbed, two-stroke that is on the jagged edge of lean where the optimum power is created. (I'd venture to say there are very few here running to that tuned standard anyway).
The low end actually shows gains in HP from the conventional carb.

Stay's here.
And if you are going to build one...better get your thinking cap on. :)

Crazy 04-11-2004 07:47 PM

Re: Electronic Injection
thx for the link to that site im sure it will be very helpful. Ive read many things about how efi cars work and all the different types. being that this will be a single cylinder i think ill be able to pull it off. the only thing that would have to modified on bikes that didnt have a lighting coil could be to change the stator assembly to one that had it. Another option would be on the idler pully type generator, it would just run off of the stock chain on the swingarm. I have an extra OLD school thumper that im going to try the idea on.

The idea of the idler type generator on the swingarm would be a more retrofit type idea that would fit more bikes with ease, but then issues of water getting on it would be an issue. The only other thing that i thought would be a problem was the energy needed to run the fuel pump.

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