Bottle Heater + Arming button
#1
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Bottle Heater + Arming button
my switches have it where you flip down for the heater to come on and up to arm the system, does anyone wire it different so you can just arm it and it will heat it before during and after without having to switch it back and forth?
#2
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You seem to be asking whether two switches are necessary. The answer is yes. Arming and heating should be two separate switches. Each of the two functions should have an associated indicator light.
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Arm and heating are two seperate "operations". By setting your car up to heat the bottle while you drive around "armed" is a bad idea.
While a properly set up system would require three things to actually "Arm" the system (Arm On, WOT Switch Active, Engine RPM within RPM "Window"), you would be setting yourself up for accidently lighting off the system while your driving around "heating" up the bottle. Consequences are wasted Nitrous (its not cheap for refills) or worse, forgetting it was armed and losing control of the car either damaging it or worse killing someone as a result of losing control of the car.
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Gotta disagree with Cam on this one. You could use a single switch for arming and bottle heat but you shouldn’t. When bottle pressure is near 950 psi, the heater should be disabled (switched off). You should not rely solely on a pressure or temperature switch to control the heater. You should control the heater. When you are heating a nitrous bottle, you should check the pressure gauge frequently. The pressure or temperature switch should be considered as a safety backup switch, not as the primary heater control. Your system should not be armed until you are completely focused on controlling the car. This means not until a few seconds before going WOT. You sometimes need to heat the bottle for many minutes before the pressure reaches 950 psi. Having the system armed during this time is asking for trouble. Both functions should be active for the minimum time necessary. To meet this requirement, separate switches are needed.
Last edited by Gary Z; 06-19-2011 at 05:49 PM.