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Post by btinsc on Dec 13, 2022 10:11:30 GMT -5
Having no success in finding a usable Harrison heater, but still searching, I am interested in a small heater made by Inferno, they cater to the ATV crowd. I need some heat, I’m not tuff anymore, age took care of that. LOL Looks like the heater can be stuffed behind the dash and not be seen. Problem is the heater is not available in 6v. Checking with the manufacturer the fan pulls 5.5 amps, KW carries a power converter rated for up to 10 amps (6 volts to 12 volts) which should carry the motor ok. Question is have any of you used such a device and how well did it work out?
I have a stock ‘52 CJ3A. Thanks...Bill T
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Post by m38mike on Dec 13, 2022 13:13:55 GMT -5
I've used a couple of inverters taking 6v to 12v. They work well if you have them wired up with the connection close to the battery. They can pull over 120 watts. Use at least a 14 gauge wire to connect them to the battery for a 10 amp inverter. Also make sure the inverter is someplace with good air flow to help cool it. If you're pulling 60% of it's capacity it's gonna get hot. As a rule of thumb, don't tax inverters at more than 75% of capacity. Most of them are not made to get rid of the heat they create as well as they should.
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Lee
Full Professor
Vagabond Jeeper
Posts: 642
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Post by Lee on Dec 13, 2022 13:35:50 GMT -5
As Mike said the converter gets hot 🥵 I woul suggest buyin the heater you like and investing in a 6V replacement motor for the unit, they are not hard to find, a Company like Red Dot or even Napa can source them and most likely no more costly than a converter.
Lee😉
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Post by btinsc on Dec 13, 2022 14:16:11 GMT -5
Good information guys just what I was looking for.
Lee that is what I was hoping to do.Tried to get motor specs from blower manufacturer but all I got was motor amps. So I will do as you suggested, if no luck there I can use the power inverter. Mike I’m thinking about the additional load on the generator, I need to check what amps the generator is rated for. If the 12 volt motor is rated for 5.5 amps then the amp load on the 6 volt side would be twice that... 11 amps plus the the draw of the converter. Right?
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Post by m38mike on Dec 14, 2022 9:02:18 GMT -5
Bill, that is correct. Amps X Volts = Watts. 12 x 5.5 = 66. 6 x 11 = 66. Add 5% for power lost due to inefficiency in the circuit and to create heat. ~ 3 watts. 69 watts / 6 volts = 11.5 amps draw on the generator with power thru a converter to run the 12v motor at full speed. If you run it at a lower speed, you will draw proportionally less power.
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Post by btinsc on Dec 14, 2022 13:07:24 GMT -5
Just wanted to make sure I was thinking right Mike. Doing a bit of searching I found that there were 3 generators installed in the CJ3A. Two of them were rated at 35 amps and one rated for 45 amps. I want to do a load test on my 6 volt circuit. Never checked it before, just curious. Thanks again for the info. Bill
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