Please bear with my 'nonsense' but I had an interesting idea and I'd like to hear other opinions.

Please this is only theoretical and I haven't any plans to pursue this.

Anyway, a friend was asking if it would be possible to convert his GoPed into some sort of FI setup. I told him he's on crack and if he can find a 'whistle' sized turbo for his tiny GoPed motor I'll help him. I told him if he wanted to destroy his motor he might as well NOS it (kits do exist for them using Sneaky Pete systems).

Then I thought he could have a FI setup on demand using an 1/8 size standard scuba tank, "Spare Air" size to those who scuba, regulated to a couple of psi via air-valve and some sort of remote operated solenoid to 'boost' on demand. He'd need to have a 12V battery on board to power up the hardware and run the external fueling. Heh, it may work. I should tell him to find an MF2 and the smallest single injector available. Maybe a 1-way air check valve after the filter so the compressed air doesn't blow it off.

Know what I mean?

No need to get into details, its the concept I was interested in.

 

wtf, I'm tired. Why did I post that?! Moderator, please feel free to lock. I gotta hit the sack.

 

it's an..... interesting.. idea but there's not enough air to make it really worth your while maybe a full tank, an aluminum 3000psi tank, and you could get something out of it. the "regulator" setup would be tricky. heh.

 

This was actually done on a drag car in the 70's i believe (it WAS done, not sure the time frame though), I think the guys name was Jack...somthing.

I was trying this a while back on my truck but coldnt get the valve that switches between compressed air and ambinet (sp?) to work right.

Search the newsgroups with google, it will come up.

 

Let's say you have a 1.8l running at 6000rpm. That's 1.8l per engine cycle, which is two revolutions. So thats 1.8l * 3000 = 5400 cubic liters of air per minute. Or 190 cubic feet of air per minute.

A scuba tank is 80c.f. This all works out to (80 / 190) * 60 = 25 seconds of air (at ZERO boost!)

With, say, 10psi boost, it would be much less time, perhaps 15 seconds

Notice the 3000psi never enters into it...


[Modified by kb58, 9:12 PM 6/5/2002] Darn math!!!


[Modified by kb58, 9:14 PM 6/5/2002]

 

sure it does, the reason a tank with just a few cubic feet of physical volume holds 80-100 cubic feet of air is because it's at 3000psi. but yeah, it's not enough air.