Ever seen this for a reg/rec

[trevor]

So this is on the 81 gs1100e I just picked up. The po said it was on it when he bought it ten years ago. Rob (AZR) and I tested the charging system and it was dead on.
So Rob asked me to post this as he tought it might cause some debate here...

[azr]

I think it's a GS time machine du hicky thing a majig

[BigD_83]

This place continues to surprise me. What you have there, is some hocus pocus.

I'd love to see the backside of that plate. Looks like a relatively clean solution, but just what are all of those parts? Are all of those terminals covered bu something?

Posplayr might have some insights.

[posplayr]

This looks like a home brew shunt regulator. The two square things together make the rectifier. I only see one device that is serving as a shunt (the round one)

[Steve]

Creative, for sure.

Nice to hear that it actually works.

.

[robertbarr]

Really impressive work. I'd like to see the backside of that.

I'd also like to see his workbench; no doubt there's plenty of imaginative & intelligent homemade tools & fixtures, a gadgeteer's playground.

[tatu]

It looks neat enough, I would imagine the whole setup wouldn't'v cost more than $5 in components.

[rustybronco]

The round thing looks like an SCR.

[posplayr]

It looks neat enough, I would imagine the whole setup wouldn't'v cost more than $5 in components.

Even though electrically it is still crude, I suspect it was an engineered who understood that if he could distribute out the heat into that relatively large plate of aluminium he would end up with a reasonable heat sink as well as sufficent area to get decent convective heat flow as well.

[Highway_Glider]

Neat.

He built a time machine out of a GS.

It' missing the display that shows the time you are at, the one you came from and the one where you are going....And the flux capacitor itself. Which is what makes time travel possible.


Joke aside I like the way he used a wire-screw-terminal as a breadboard and insulator. Clever. It passed the test of time too. +1 with stars on it.

[trevor]

Crazy eh?? I happen to know the guy that owned the bike before. I'm going to contact him and ask him about it. He is a member here but hardly ever logged in.

[JTGS850GL]

Yep, looks like two bridge rectifiers, an SCR, a Zener Diode for regulation and a couple resistors to bias the diode. Pretty basic R/R. The large plate serves as a decent heat sink for the rectifiers and SCR. Wont save the stator from damage but most likely built with over speced components so the R/R wont get killed at the same time.

[bwringer]

Many many moons ago, I had a GS400 with the usual charging system issues.

I explained my woes to my Dad (an Industrial Engineer, who had previously been an Electronics Design Engineer), and much scribbling ensued. Then the soldering started. A short time later, he handed me an aluminum box with pretty much the same components you see here inside (the lid was off so it could cool, and I remember seeing a heat sink or two in there as well; I think the box was just what he had lying around.)

It actually worked pretty well, although looking back I'm pretty sure the stator was only working on one phase. In any case, I could at least ride to class and get home again as long as I turned the headlight off at stop lights.

Until now, I never really knew what the hell Dad whipped up.

Thanks for posting this.

[trevor]

Here an email I got fom the guy who sold it to the guy I bought it from...he didn't put it in either..so that means it's at least 14 years old...who knows. lol

I seem to recall when I bought it, the guy was an asian guy working in the electronics field. I think he messed with the electrics since all GS bikes of that era had a reputation for eating their stators. The quick fix for eating stators, according to Murray at Modern Møtorcycling ( A Suzuki dealer since 1966), ADD a secondary negative ground wire to the battery. I failed to do that on ONE bike, an '82 GS-650L, and it ate the stator. All other GS models I've added the ground wire and never had a problem. Murray says bikes with high mileage don't eat stators. It's the 'down to the pub' then home type rides that eventually cause the problems since the batteries never get fully recharged on short runs. Makes sense. If I run across any other photos, I'll pass them on.

[Gregory]

I wish the picture were still here so I could ogle this curious creation.