Pamco home made rectifier and vr291 voltage regulator

cormier

Ive built one of these pamco rectifiers to and im using the VR291 voltage regulator again from pamco for my bobber that im in the prosses of building. Can i bolt the aluminum plate from the rectifier directly to my frame or does it have to be isolated so it does not ground out? And the same goes for the vr291 voltage regulator can it be bolted direct to my frame without isolating it so it to does not ground out?

Thanks

kingwj

The plate is for cooling and not grounding. You should have a ground wire to the recitifiers already. So mount it to the frame with no worry.

xsleo

I think to get the regulator to work you need the case grounded. pamcopete can tell you for sure.

HndaTch627

xsleo wrote:

I think to get the regulator to work you need the case grounded. pamcopete can tell you for sure.

correct, the case of the regulator needs to be grounded in order to function.

Retiredgentleman

Both the rectifier and the regulator will have a black ground wire coming from them that needs to be connected to the common black ground wires in the harness. If you don't have a stock wiring harness, you can connect the black wires from each device to bare metal on the frame (not to the battery box that is rubber mounted).

The rectifier plate and the regulator casing can be bolted to the frame if you wish, or they can be bolted to the battery box, because they have no need to be grounded.

pamcopete

RG is correct in the fact that you do not have to ground the case of a VR291 regulator because it has a ground wire for that purpose.

However, you do have to ground the case of the "Chrysler" style regulator as it does not have a ground wire.

cormier

pamcopete wrote:

RG is correct in the fact that you do not have to ground the case of a VR291 regulator because it has a ground wire for that purpose.

However, you do have to ground the case of the "Chrysler" style regulator as it does not have a ground wire.

Alwrigh a few questions for Pamco

So i ordered a regulator for a 1974 cherokee, i did not come in yet so i dont know exactly what it looks like, but from the pics the parts guy showed me it looks diferent than the one you posted the pic of. The one i ordered has wires and a plastic connector comming out of it. Did i order the right one? Will it work on my 1978 with point system?

Thanks Pamco

kingwj

Does it look like this?

pamcopete

cormier

There are basically two type of regulators that can be used on a motorcycle.

The VR291 provides a switched battery to one brush of the alternator rotor, the other brush is grounded. The VR291 style has four wires and a plastic connector.

The "Chrysler" style regulator provides a switched ground to one brush, the other brush is connected to battery. The "Chrysler" style regulator has two pins in a plug type arrangement and requires that the case be grounded.

So, take a look at the brushes on your alternator rotor and see which style you have to determine which regulator you need.

kingwj....that's a really pro looking mounting for the Vr291 style.

cpotts454

I have this set up and it works great.. Actually too great. I've burned up two power wires coming from the rect. to the battery. I keep replacing it with larger gauge wire. I am at 14 gauge right now and it seems to be working pretty good. I get a full 20 amps of power when reved 3000+.

tron · Full Member Joined: Apr 27, 2009 Posts: 63

i have a Duralast / Voltage Regulator Part Number:
VR733 from autozone/advance auto it looks just like the ones ive seen with the triangle connector , i think its just a differnt number because its from autozone?

its for a 89' dodge pickup , same thing?

also where are the directions to make a radio shack rectifier?

thanks

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