Re: Beating a Dead horse - 6v AC
Posted by Mike On 2010/1/10 20:07:56
Quote:
That was of course my first step, but most research turns up threads that say you can't use one with AC because the load is too much. Since i'll probably be using an A6 or similar compressor for looks and price, that means i'll have to have one closer to probably 10 volts for minimum ( i don't know what the minimum closing voltage is for an older compressor, assuming)
Now if i could find a step up converter to do that to do that, that'd honestly be the best of all worlds. AC with an on and off clutch that cycles itself as needed (and probably VIR based instead of 60's muscle style which are parts i've been reading about). However, the only step ups i've found so far are in the 800mh to 1 amp range. I'm sure a heavier one could be custom built and you could honestly sell the crap out of those to lazy 6v people like myself who don't want to convert. I'm still going to look tonight and see if i can find a heavier duty one, even if it had to hide under the dash or somewhere similar and run 12v out to the compressor.
From what i've read (which i could have interpreted wrong), even clutch enabled compressors up until somewhere in the 70's ran all the time that the AC was on. If it was off the clutch was off and if you turned it on the clutch was on. They didn't seem to cycle automatically and used STV valves or POA valves.
From what i understand the VIR (valve in receiver) setup has a pressure/temp switch that cycles the compressor, and that came out late 70's.
If all that is correct, and you had, say a 71 tempest to look at (i do!) and you ran the ac most of the summer, and had a packard with constant on compressor that you drove only really in the summer, you could expect the same kind of AC performance and reliability/AC component life (in the ballpark anyways.)
So unless i can find a really good step up converter, i still think best bet is to mimick a 60's air system that has the AC switch turned on all the time (for my driving habits, no saying this works for all).
Also, lets not forget a movable compressor mount with lever operated through linkage that lets you tighten the belt against the compressor to turn on or relax it slightly to let it slip
Ok, lets forget that, it belongs on a tractor, not a fine car like the packard.
BigKev wrote:
If the Sanden Compressor clutch requires 7.5 volts with a max of 49 watts, then that is a max of 6.5 amps. With 12 volts at 49 watts, thats 4 amps max.
So why not get a 6 > 12v voltage step-up converter that is rated to handle that amperage with a constant load.
I know they sell those step-up convertors to run 12v radios in 6v cars and most radios with internal amplifiers pull between 5 and 10 amps constant. So it may be a good fit.
Just floating an idea.
That was of course my first step, but most research turns up threads that say you can't use one with AC because the load is too much. Since i'll probably be using an A6 or similar compressor for looks and price, that means i'll have to have one closer to probably 10 volts for minimum ( i don't know what the minimum closing voltage is for an older compressor, assuming)
Now if i could find a step up converter to do that to do that, that'd honestly be the best of all worlds. AC with an on and off clutch that cycles itself as needed (and probably VIR based instead of 60's muscle style which are parts i've been reading about). However, the only step ups i've found so far are in the 800mh to 1 amp range. I'm sure a heavier one could be custom built and you could honestly sell the crap out of those to lazy 6v people like myself who don't want to convert. I'm still going to look tonight and see if i can find a heavier duty one, even if it had to hide under the dash or somewhere similar and run 12v out to the compressor.
From what i've read (which i could have interpreted wrong), even clutch enabled compressors up until somewhere in the 70's ran all the time that the AC was on. If it was off the clutch was off and if you turned it on the clutch was on. They didn't seem to cycle automatically and used STV valves or POA valves.
From what i understand the VIR (valve in receiver) setup has a pressure/temp switch that cycles the compressor, and that came out late 70's.
If all that is correct, and you had, say a 71 tempest to look at (i do!) and you ran the ac most of the summer, and had a packard with constant on compressor that you drove only really in the summer, you could expect the same kind of AC performance and reliability/AC component life (in the ballpark anyways.)
So unless i can find a really good step up converter, i still think best bet is to mimick a 60's air system that has the AC switch turned on all the time (for my driving habits, no saying this works for all).
Also, lets not forget a movable compressor mount with lever operated through linkage that lets you tighten the belt against the compressor to turn on or relax it slightly to let it slip
Ok, lets forget that, it belongs on a tractor, not a fine car like the packard.
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