Nitrous and road racing...
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Teching In
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Nitrous and road racing... I read the FAQ and it said:
a 125 HP Power Shot kit with a standard 10 lb. capacity bottle will usually offer up to 7 to 10 full quarter-mile passes.
I want to use nitrous while road racing. I need to know if this is a dumb idea.
It's a turbo car and I want to use a very small shot primarily for the cooling properties. I'm thinking like a 20HP shot. The races last 20 mins though and your above 3K rpms the whole time. Is there a formula to find out how lbs. of nitrous I would need? Two 20lbs. bottles wouldn't be enough I would think. Could I use a scuba tank. I think they hold 20 cu. ft. @ 3000psi. Does anyone have a conversion for cu.ft. to lbs. Any info is appreciated. Thx.
a 125 HP Power Shot kit with a standard 10 lb. capacity bottle will usually offer up to 7 to 10 full quarter-mile passes.
I want to use nitrous while road racing. I need to know if this is a dumb idea.
It's a turbo car and I want to use a very small shot primarily for the cooling properties. I'm thinking like a 20HP shot. The races last 20 mins though and your above 3K rpms the whole time. Is there a formula to find out how lbs. of nitrous I would need? Two 20lbs. bottles wouldn't be enough I would think. Could I use a scuba tank. I think they hold 20 cu. ft. @ 3000psi. Does anyone have a conversion for cu.ft. to lbs. Any info is appreciated. Thx.
the general rule of thumb is 4 pounds are used over a minute of continuous use of a 100 shot (2.5 minutes worth of a 10# bottle)...on a 20 shot it should equate to about 10 minutes continuous, of course you wont be using it continuously, but just food for thought
I seriously doubt you need more than turbo power for steady
***-hauling. I expect it's really needed for "passing authority"
or something. You may want to do something like I plan; rig
all the safety, window & WOT switches but also have a "go
button" somewhere handy (my plan, a toe button down by
the footrest plate) that will shoot only when you command
-and- the RPM, WOT conditions are in place. That way you
won't blow your bankroll at random.
***-hauling. I expect it's really needed for "passing authority"
or something. You may want to do something like I plan; rig
all the safety, window & WOT switches but also have a "go
button" somewhere handy (my plan, a toe button down by
the footrest plate) that will shoot only when you command
-and- the RPM, WOT conditions are in place. That way you
won't blow your bankroll at random.
Originally Posted by Bens3rdgen
I read the FAQ and it said:
a 125 HP Power Shot kit with a standard 10 lb. capacity bottle will usually offer up to 7 to 10 full quarter-mile passes.
I want to use nitrous while road racing. I need to know if this is a dumb idea.
It's a turbo car and I want to use a very small shot primarily for the cooling properties. I'm thinking like a 20HP shot. The races last 20 mins though and your above 3K rpms the whole time. Is there a formula to find out how lbs. of nitrous I would need? Two 20lbs. bottles wouldn't be enough I would think. Could I use a scuba tank. I think they hold 20 cu. ft. @ 3000psi. Does anyone have a conversion for cu.ft. to lbs. Any info is appreciated. Thx.
a 125 HP Power Shot kit with a standard 10 lb. capacity bottle will usually offer up to 7 to 10 full quarter-mile passes.
I want to use nitrous while road racing. I need to know if this is a dumb idea.
It's a turbo car and I want to use a very small shot primarily for the cooling properties. I'm thinking like a 20HP shot. The races last 20 mins though and your above 3K rpms the whole time. Is there a formula to find out how lbs. of nitrous I would need? Two 20lbs. bottles wouldn't be enough I would think. Could I use a scuba tank. I think they hold 20 cu. ft. @ 3000psi. Does anyone have a conversion for cu.ft. to lbs. Any info is appreciated. Thx.
Since you can't compress liquid nitrous, how could you get 20 cubic feet of it into a scuba tank? And what fool is going to fill it for you?
Most road racing bodies won't even let you on the track with a bottle.
Jim
Most road racing bodies won't even let you on the track with a bottle.
Jim
Thread Starter
Teching In
Joined: Dec 2005
Posts: 40
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Thx for the replies guys...
Hennytime Quote:
4 pounds are used over a minute of continuous use of a 100 shot
(2.5 minutes worth of a 10# bottle)...on a 20 shot it should equate to about 10 minutes continuous.
According to that calculation a 20lb bottle might actually last 20 mins. Races aren't much longer than that.
jimmyblue Quote:
I seriously doubt you need more than turbo power for steady
***-hauling.
Yea, I don't really 'need' half the parts on my car but they sure do make things fun. Thx for the suggestion. My plan is to have the nitrous come on automatically during parts of the race where I need it most. You don't have your foot burried in it coming out of a turn, but as soon as your wheel is straight and your at WOT, that would be a great time to have a little extra boost.
DeltaT Quote:
Since you can't compress liquid nitrous, how could you get 20 cubic feet of it into a scuba tank? And what fool is going to fill it for you?
Most road racing bodies won't even let you on the track with a bottle.
Thanks for the heads up, I'll make sure to hide the bottles.
Help me out here since I'm not a chemistry major. What's the difference between a scuba tank and a nitrous tank? How much psi does a nitrous tank hold, because I can buy 4500psi scuba tanks. I'm sure there is a difference in the regulators, could I switch them and get it hydro tested?
I thought nitrous was a gas at atmospheric pressure and a liquid when compressed, is that wrong? Thx for the info.
Ben
Hennytime Quote:
4 pounds are used over a minute of continuous use of a 100 shot
(2.5 minutes worth of a 10# bottle)...on a 20 shot it should equate to about 10 minutes continuous.
According to that calculation a 20lb bottle might actually last 20 mins. Races aren't much longer than that.
jimmyblue Quote:
I seriously doubt you need more than turbo power for steady
***-hauling.
Yea, I don't really 'need' half the parts on my car but they sure do make things fun. Thx for the suggestion. My plan is to have the nitrous come on automatically during parts of the race where I need it most. You don't have your foot burried in it coming out of a turn, but as soon as your wheel is straight and your at WOT, that would be a great time to have a little extra boost.
DeltaT Quote:
Since you can't compress liquid nitrous, how could you get 20 cubic feet of it into a scuba tank? And what fool is going to fill it for you?
Most road racing bodies won't even let you on the track with a bottle.
Thanks for the heads up, I'll make sure to hide the bottles.
Help me out here since I'm not a chemistry major. What's the difference between a scuba tank and a nitrous tank? How much psi does a nitrous tank hold, because I can buy 4500psi scuba tanks. I'm sure there is a difference in the regulators, could I switch them and get it hydro tested?
I thought nitrous was a gas at atmospheric pressure and a liquid when compressed, is that wrong? Thx for the info.
Ben
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Once it is a liquid it can be compressed no further. Since a scuba tank is not much difference in size to a nitrous tank, it will hold a similar amount. The pressure in the tank will be around 850-1200psi.
The difference in the scuba tank is that air doesn't change to a liquid at the scuba temps, so they can just raise the hell out of the pressure and hold a decent volume of air in there.
Now, if you wanted to inhale nitrous while you went diving... It might be fun.
Once.
Jim
The difference in the scuba tank is that air doesn't change to a liquid at the scuba temps, so they can just raise the hell out of the pressure and hold a decent volume of air in there.
Now, if you wanted to inhale nitrous while you went diving... It might be fun.
Once.
Jim
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It seems like it would be way more practical to add some meth for cooling and up the boost for the power gains. Unless your tapped out on the turbo side and would be pushing it out of it's map? The added cylinder pressure of the nitrous over that much time would really stress your engine and almost negate the cooling factor, especially in a 20 minute road race!
Jeffrey
Jeffrey
Thread Starter
Teching In
Joined: Dec 2005
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Meth doesn't actually add much if any power right? I know it's high octane and I know it ignites in the chamber but I thought the heat it created was way than less than gas.
Thx for the replies. It might be more fun than pratical but I'll let ya guys know when I find out.
Thx for the replies. It might be more fun than pratical but I'll let ya guys know when I find out.
Don't get me wrong the "fun factor" is there. I'm all about some nitrous! It's just going to be hard on parts using 40+ pounds of the stuff per race. But I say try it out, nothing like a little bottle action on a long back stretch! Good luck!
Jeffrey
Jeffrey
