I was wondering how long will a 5# bottle last?? How long will a 10# bottle last. I am thinking if i have a hard time fitting the 10 in the spare tire compartment neatly, without modifying, that i'll just go with a 5lb. But i would like to know how long each will last.

 

I read somewhere a 10lb bottle will last 3 minutes on a 50 shot. You should be able to fit a 10lb bottle into the spare tire well fairly easily.

 

I typically get 3 consistent 150hp passes (12 sec each, +-.1) and the 4th falls off pretty bad on a 10lb bottle.

So a 5lb bottle may last two solid passes at that level. If you are only spraying 100hp, obviously it would live longer.

I tried a 15 pounder one weekend and got 4 good passes with the 5th falling off .25sec (not that it pertains to your question).

 

General rule: 10sec/lb/75hp is pretty close. Of course, you can't empty the bottle completely. So, ~4 10sec. runs/10lb bottle at the 150hp level.

Rich

 

i have done 3 solid passes at 125 hp level, with some to spare.

although if i dial it up, i can get only one good pass, and then i have to grab a fresh bottle, lmao!!!!

 

So i guess i won't go below a 10lb then

 

You can definately fit a 10# in the spare tire well, I did with my spare tire still in there. Of course I used an older NOS brand bottle, which is longer and skinnier than most newer ones...

 

10 lb fits fine in spare tire area

 

How do you guys have them mounted? Straight up or at an angle?

 

10 lb will fit at a slight angle in the spare compartment. I get two passes from 10 lb bottle, 5 lb would be frustrating.

 

What is your ET and how much N2O do you run? That sems like you must be running too high a nitrous/fuel ratio or that you are running a huge (300+hp) shot. Just curious.

Rich

 

I agree, on a 150 shot, you should be using about 0.15 pounds of nitrous per second. You should be getting atleast 5 runs per bottle.

 

I thought it had to be at a certian angle?

 

300 shot 11.23 at 125 mph.

 

So two passes is right on the estimate. ~75hp/10sec for 1lb at the 100hp level = ~4.5lbs for 11sec @ 300hp. IOW, two passes on a 10lb bottle.

Rich