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Old 08-02-2013, 02:31 PM   #61 (permalink)
oil pan 4
EV convert
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Location: NewMexico (USA)
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Originally Posted by justme1969 View Post
It would be awesome for a throttle sensitive switch mabe disconnect @ 1800 rpm? Not sure application is key but a toggle switch to flip on when parking would be Jazzy for my app.
You could do this very easy with a spark ignition car.
You can buy MSD brand RPM activated switches. They are no more than a set of electronics that uses an ignition system signal to figure RPMs, then it turns a relay on or off at depending on what RPM its set for.
Their main use is powering nitrous oxide and fuel solenoids so they can handle any kind of P/S clutch you might want to use.

I will tell you how I would wire it up.
First of all I would have a toggle switch that I could flip on for use in parking lot situations.
Then I would have it wired into the reverse light and brake system so any time I backup or apply the breaks I have P/S.
I would also add a time delay that will power up the clutch for the first minute or so after I turn the key on, that will just to get out of the drive way and on the road.

Then lastly I would also add a little indicator light that will turn on when the P/S clutch circuit goes hot.

1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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