VPC20HD
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Can anyone tell me what this is??
- Thread starter VPC20HD
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nvrenuf
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Aftermarket trailer brake controller.
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Trailer brake controller.
idahovette
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OLD OLD OLD aftermarket brake controller
brooksman9
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Several years ago I bought a 72 Camaro. Had some kind of sensor under the body and something on the drive shaft that triggered it every rotation. Found out it was some kind of aftermarket cruise control apparatus. I think someone told me they came from Sears when I posted pics of it on NastyZ28. I don't remember there being anything inside the car for it though. Just speaking of odd old things.
Ha! Even found the post from 2007.
Ha! Even found the post from 2007.
Driveshaft sensor????
Hey Guys, While under the 72 I recently purchased today I found a little what looks like a sensor mounted to a bracket an inch or so away from the drive shaft. Then a piece of metal I think tie wrapped to the drive shaft so that the sensor would pick up revolutions. It had two small...
nastyz28.com
Last edited:
PrairieDrifter
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Looks like the Kelsey hayes unit I just picked up. Good quality units. I'll take it if you're gonna junk it.
That brake line runs to one of the outputs on the master cylinder.
That brake line runs to one of the outputs on the master cylinder.
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Several years ago I bought a 72 Camaro. Had some kind of sensor under the body and something on the drive shaft that triggered it every rotation. Found out it was some kind of aftermarket cruise control apparatus. I think someone told me they came from Sears when I posted pics of it on NastyZ28. I don't remember there being anything inside the car for it though. Just speaking of odd old things.
Ha! Even found the post from 2007.
Driveshaft sensor????
Hey Guys, While under the 72 I recently purchased today I found a little what looks like a sensor mounted to a bracket an inch or so away from the drive shaft. Then a piece of metal I think tie wrapped to the drive shaft so that the sensor would pick up revolutions. It had two small...nastyz28.com
I worked at a junkyard for a bit in '02/'03 or so. I remember taking apart several cars with aftermarket cruise control like that. I don't remember what the switchgear looked like on any of them. I just remember the janky sensor setups.
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- 225/6, 350 c.i., 350 c.i., 5.9l Cummins
@brooksman9 @bucket
My 76 had an aftermarket cruise setup like that. Magnet glued to the driveshaft with proximity sensor self tappered to the floor. Magnet flew off in the first week of owning the truck.
I pulled everything out of the truck not long after, kept it though in a shoe box. The “control” switch was mounted to the turn signal stalk.
My 76 had an aftermarket cruise setup like that. Magnet glued to the driveshaft with proximity sensor self tappered to the floor. Magnet flew off in the first week of owning the truck.
I pulled everything out of the truck not long after, kept it though in a shoe box. The “control” switch was mounted to the turn signal stalk.
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The ones I remember had what was basically a hose clamp holding the magnet to the drive shaft.
75gmck25
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I installed a couple aftermarket cruise controls, and they both had two magnets you epoxied to the driveshaft. Then you mounted a sensor on the body and it stuck out near the driveshaft (1/4”?). Magnets spinning around near the sensor were used to measure road speed.
However, the device shown in the first post is a trailer brake controller.
However, the device shown in the first post is a trailer brake controller.
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3 old's Perry? I would call it a reliable trailer brake controller.
And if it manners, period correct!
59840Surfer
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The problem with the hydraulic brake controllers is that they "stole" some fluid from the discharge of the master cylinder, and whatever position they were installed in (front or rear) suffered a bit for pressure and application volume.
Initially, they were designed for the old single-system brakes where all four wheels had fluid from the same single pressure system.
This was typically before dual brake systems, and if I found these on a dual-system, I used to fail them on the inspection.
Initially, they were designed for the old single-system brakes where all four wheels had fluid from the same single pressure system.
This was typically before dual brake systems, and if I found these on a dual-system, I used to fail them on the inspection.
PrairieDrifter
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Sounds like wives tales. If that little extra displacement causes brake issues.. Once bled and equalized, there should be barely any extra displacement of fluid.
Then normal brake wear should cause no brakes, going off that theory. Normal brake wear is 10x the displacement of that fluid. Caliper pistons will extend pretty far. Also every inch of hardline should matter too with that theory. I'm sure there's some ridiculous distance where you wouldn't get the same pressure as "normal".
