Topic: rectifier upgrade

[KRONUS0100]

I did a search like a good boy.  But it seems that all the threads have disappeared.  Any one got any ideas on how to upgrade a 76 cb750f to a solid state voltae regulator and retifier?  will one off a gl1000 or gl1100 work?  How do I hook it up?  thanks.

[super pasty white guy]

I went with a 3 phase rectifier purchased from digikey mounted on an old cpu heatsink-  see this thread for something similar.
http://forums.sohc4.net/index.php?topic=34220.0

I used an automotive solid state regulator.  I can pull the part nos if you're interested in going this route.

Also switched out to blade fuses at the same time.

spwg

[eurban]

I have a solid state regulator purchased from this fellow

http://www.oregonmotorcycleparts.com/

It is just a reg, not a reg/rec combo so you keep your existing rectifier and install the regulator in the same location as the stock one.  Works very well and not crazy expensive.

[jph550]

i hooked one of these up
http://www.electrosport.com/street/street-model-products-listing-street_42450.php
I put it where my stock fuse box wasd and moved the fuse box under seat.It took a little wiring magic. It uses only two wires to the regulator because it shares the ground with the rectifier. I used a two prong wiring plug in place of the blade to blade found in the stock regulator on my '76 cb550. The heat-sink and good craftsmanship sold me too.

[KRONUS0100]

May have a change in plans.  Happen to have a good reg/rect combo from a GL1100.  It has the 3 yellow stator leads, a black 12 volt lead to the ignition switch, 2 green ground leads, and 2 red/white leads that go back to the battery.  This info is from the factory service manual wiring diagram.  My question is this...the white wire on my cb750 rotor is just a 12 volt sensor wire.....triggers the magnetic field to start the charging process.  I can just hook this up to any black wire on the bike....right?    This is the only question as the reg/rect comco IS a Honda part and going on a Honda bike....and the wire colors match on both schematics. Will keep updated.

[TwoTired]

The white wire on the SOHC4 alternator controls an electromagnet in the alternator.  The regulator drives this wire with voltage, thus controlling the alternator output strength.

You need a regulator that provides this function.  From your description, it doesn't appear the GL1100 R/R has this capability.  I'd guess the GL has a permanent magnet alternator.

Cheers,

[Pinhead]

Check the link in my sig....

[sandcastcb750]

Chect out Rick's Motorcycle Electrics in New Hampshire for updated electrics.