I've been using the Flaming River Big Switch for many years without issue...
Mark Goulette Owner/Driver of the Livin' The Dream Racing dragster www.livinthedreamracing.com "Speed kills but it's better than going slow!" Authorized Amsoil Retailer
Posts: 1538 | Location: Back home in Alaska! | Registered: February 13, 2011
Moroso 4-post on my dragster with alternator. My brothers car uses two Cole Hersee Continuous duty solenoids, one for the main power and one for the alternator so it is disconnected from the battery when the power is shut off from the car.
Nick Craig
1971 Camaro Split Bumper 376ci LS3
Posts: 410 | Location: Ohio | Registered: December 28, 2013
We use Heavy Duty continuous duty solenoid from Fastronix. Easy to wire "kill switch" to rear of car and inside for driver as all it takes is a toggle switch or basic push-pull headlamp switch in back of car that is wired pull-on completes ground and push-off that breaks ground. We use 16-gauge wire from switch to On-Off solenoid.
Cole Hersee 75912-BX on both cars, which is a double post switch so it shuts the alternator off too. Currently it's $47.47 on Amazon. Moroso re-brands it and calls it 74108 and they get $80-90 for it.
Posts: 742 | Location: Upstate NY | Registered: July 02, 2013
Originally posted by 183N: Cole Hersee 75912-BX on both cars, which is a double post switch so it shuts the alternator off too. Currently it's $47.47 on Amazon. Moroso re-brands it and calls it 74108 and they get $80-90 for it.
quote:
Originally posted by Ron Gusack: Cole Hersee 75912-BX for me.
X3 on the 4-Post/2 Circuit Cole-Hersee 75912-BX. Whatever you buy, look at the current rating first. Some of those cheap units with plastic levers or keys on them are barely capable of handling enough current for a fuel pump, much less a starter...
Dan "Jim" Moore Much too young to feel this damn old!!
On my front engine dragster I have the electric solenoid for master cutoff with switch in drivers compartment and one in back of car. Very convenient.
On my new Altered I am going to set it up with both mechanical master in the rear and the electric solenoid to with switch in drivers compartment.
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4X NE2 CHAMPION. 2020 TDRA NE2 Champion
Posts: 4275 | Location: United States of Texas | Registered: April 02, 2011
Originally posted by Curly1: On my front engine dragster I have the electric solenoid for master cutoff with switch in drivers compartment and one in back of car. Very convenient.
On my new Altered I am going to set it up with both mechanical master in the rear and the electric solenoid to with switch in drivers compartment.
How are you going to accomplish this? My guess is your going to run the 12+ from battery to one of the switches and then the other side to the second switch? If doing so, you will lose more voltage than needed instead of just doing one or the other... Might want to just consider doing the Electric solenoid, to minimize voltage drop.
Nick Craig
1971 Camaro Split Bumper 376ci LS3
Posts: 410 | Location: Ohio | Registered: December 28, 2013
The problem you get NOT using a 4 post disconnect is if the voltage regulator / diode in the alternator sticks it can drain your battery. I had this happen more than once before I switched to them.
Yes you can use whatever, but I wouldn't use anything other myself anymore.
Originally posted by DragRaceResults: The problem you get NOT using a 4 post disconnect is if the voltage regulator / diode in the alternator sticks it can drain your battery. I had this happen more than once before I switched to them.
Yes you can use whatever, but I wouldn't use anything other myself anymore.
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