Query: Using SCUBA compressed air?
#1
New User
Thread Starter
Join Date: Mar 2001
Location: San Diego, CA, usa
Posts: 572
Likes: 0
Received 0 Likes
on
0 Posts
Query: Using SCUBA compressed air?
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.
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.
#2
New User
Thread Starter
Join Date: Mar 2001
Location: San Diego, CA, usa
Posts: 572
Likes: 0
Received 0 Likes
on
0 Posts
Re: Query: Using SCUBA compressed air? (Pritos)
wtf, I'm tired. Why did I post that?! Moderator, please feel free to lock. I gotta hit the sack.
#3
New User
Join Date: Dec 2000
Location: San Francisco, CA, USA
Posts: 550
Likes: 0
Received 0 Likes
on
0 Posts
Re: Query: Using SCUBA compressed air? (Pritos)
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.
#4
Re: Query: Using SCUBA compressed air? (schwett)
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.
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.
#5
Re: Query: Using SCUBA compressed air? (FMXer)
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]
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]
#6
New User
Join Date: Dec 2000
Location: San Francisco, CA, USA
Posts: 550
Likes: 0
Received 0 Likes
on
0 Posts
Re: Query: Using SCUBA compressed air? (kb58)
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.
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]
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]
Thread
Thread Starter
Forum
Replies
Last Post
Urban Business
Honda CRX / EF Civic (1988 - 1991)
26
05-03-2002 11:28 PM