• RME Gear & Apparel

NAPA 12-Volt Dual Air Compressor (MT-WM102-15C)

Stephen

Stephen

Who Dares Wins
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I've been thinking about version 2.0 of this (@bobn's), and I think that the 300A relay may be overkill, really. I'm thinking if we stepped down to a ~150A relay, we'd be fine since the compressor only pulls 90A. This would also mean a smaller physical relay, which should allow us to put the stock plastic "NAPA" covers back on and reuse the stock power switch. The only thing you'd have to do to the covers is drill out the back one to fit the new and larger couplers and power cables. This would make it look a lot cleaner, which would be nice.
 
TRD270

TRD270

Emptying Pockets Again
Supporting Member
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SaSaSandy
Stephen said:
I've been thinking about version 2.0 of this (@bobn's), and I think that the 300A relay may be overkill, really. I'm thinking if we stepped down to a ~150A relay, we'd be fine since the compressor only pulls 90A. This would also mean a smaller physical relay, which should allow us to put the stock plastic "NAPA" covers back on and reuse the stock power switch. The only thing you'd have to do to the covers is drill out the back one to fit the new and larger couplers and power cables. This would make it look a lot cleaner, which would be nice.
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How about a relay wiring how to for us inept in that department. Wiring is like my understanding of how planes fly it’s just magic 😂. Since you people made me spend more money

(Also j/k I have a thorough understanding of aerodynamics 😬)
 
Kevin B.

Kevin B.

Not often wrong. Never quite right.
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Stinkwater
TRD270 said:
How about a relay wiring how to for us inept in that department. Wiring is like my understanding of how planes fly it’s just magic 😂. Since you people made me spend more money

(Also j/k I have a thorough understanding of aerodynamics 😬)
Click to expand...
12v relay has four pins, and they look like this, with one of them perpendicular to the others. 87 and 30 are your main power path, I always "point" 30 at the device I'm powering with the line in from the battery on 87, but I don't know if it actually matters. 86 and 85 are for your trigger, and again I don't think it matters which is which as long as one side comes from your switch or whatever you're using to trigger the relay and the other is wired to ground.

1707848975303.png

Most relays are "normally open", and don't allow voltage from 30 to 87 until they see voltage on the 86/85 path. That's the trigger that closes the relay.

Now teach me how a 737 stays in the air because I'm pretty damned sure that's black magic.
 
BlackSheep

BlackSheep

baaaaaaaaaad to the bone
Supporting Member
Location
South Carolina....no public land
Stephen said:
I've been thinking about version 2.0 of this (@bobn's), and I think that the 300A relay may be overkill, really. I'm thinking if we stepped down to a ~150A relay, we'd be fine since the compressor only pulls 90A. This would also mean a smaller physical relay, which should allow us to put the stock plastic "NAPA" covers back on and reuse the stock power switch. The only thing you'd have to do to the covers is drill out the back one to fit the new and larger couplers and power cables. This would make it look a lot cleaner, which would be nice.
Click to expand...
150A relay perhaps like this one? Physically smaller than the 300A that you noted earlier.
 
BlackSheep

BlackSheep

baaaaaaaaaad to the bone
Supporting Member
Location
South Carolina....no public land
Stephen said:
But the two pack and resell one here. There are enough people in the cult... club who would buy it from you!
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They’re so cheap it wouldn’t be worth shipping from SC.
Kevin B. said:
Or, you know, buy the two pack and toss one in the tool bag as a spare because it's cheap Amazon chinesium and likely to burn out at the worst time possible?
Click to expand...
This is the way.
 
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