Shindengen SH775 (2018)

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Deets55

Deets55

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I’m trying to get a SH775 reg/rec. for a project. It looks like a real Shindengen has gotten crazy expensive. Anyone know where I can source one out at a reasonable price. It seems like the going price is around $150.00 with generics going for about $65.00.The latter is reasonable, but quality is a unknown.
It also looks like Shindengen has a new model out SH847. Anyone have any info on that unit?
Pete
 
Hi, I'm not familiar with the unit you refer to but if you have a 3phase alternator just stick a Honda superdream or similar reg/rectifier unit on there.
They cost about two quid and they don't go wrong,had one on my commando for over 15 years no problems, cheers
 
Baz,
The 775 is a series type reg/rec that basically disconnects the alternator winding instead of shunting the excessive voltage. It is suppose to keep the alternator windings cooler and put less strain on it. Jeander ( forum member) was one of the first guys I saw using one. They were about $65.00 when I first read his post. Apparently they have become very popular in the motorcycle world and have gotten a little expensive. I have a couple of projects that might benefit from this system but I don’t want to lay out $300.00 on an experiment if I don’t have to.
Thanks,
Pete
 
Interesting website, nice gear; power transistors rather than diodes. More efficient, still a shunt type, but with considerably less heat produced.

Probably not as "needed" on a motorcycle that has, generally, stone age electrical technology, but very cool, none-the-less.

Thanks for the lead, as I am within 4 months of wiring up a '73 750, the heat sink is a bit large, but eminently mountable.
 
I would only consider a series reg/rec these days - even more so if you are thinking of going up the lithium ion battery route.
I have fitted several SH775s now to various classic brit bikes, and I really like them - good spec, don’t get too hot, output is really stable and they shut down to an open circuit when the battery is charged, taking the load off the windings in the alternator.

Even at 100 bucks, I’d say they are a good investment (although I bought them at $65 when I was over in America a couple of years back) - extra protection on the charging circuit, prevention against exploding batteries or melting alternators.

Be careful though with the lower cost SH775 units from China - they are counterfeit, and are not series rectifiers.
Shindengen SH775 (2018)
They are the standard $3 reg/rec unit potted up in a heatsink that looks similar to the SH775 - these shutdown to heat rather than shutdown to an open circuit.

You normally get what you pay for, but with counterfeit components like this, you are getting less than you pay for! So be careful!
 
The SH775 was discussed here a while back. Maybe 2 years ago? It made me go buy a used one for $35 on eBay (came out of a snowmobile). I haven't installed it because it is a fairly big sucker and need to find a new spot to mount it. Right now I have a 3-phase PODtronics unit. I looked at the SH775 with an oscilloscope under various loads when I got it and could see how it works.

It is confusing shopping for one of these because the sellers don't know anything about electronics and just throw out a few buzzwords here and there.

Russ
 
I just bought a Shindegen SH 640 . It's 12 volt, three phase 27 amp. Not cheap, but the Sparx one didn't last long at all.

The only minor hassle is that the mounting holes are about 1/8" further apart than the Sparx one. Not hard to fix.
 
The SH640 is a shunting reg/rec so it doesn’t open the circuit like a series unit will when it’s not charging, it outputs to ground and heat.
So it behaves the same as the podtronics, and will get very hot in use - not a bad thing, just how they work.

Shindengen are a great company though, and their parts seem very reliable.
 
The Polaris part # is 4012941 for the SH775 R/R. I bought one a couple years ago for around $100.00 for my 08 T100 Triumph. The price is up to about $165.00 now so for my other Hinckley twin I bought a FH020AA with Triumph harness # T2500676 from Roadstercycle for $114.00 plus shipping. The harness can be used on both R/R's and is a good deal at about $10.00, just cut off the end you don't need and solder on your own battery and alt. connections. As far as I can tell the SH847 like the SH775 is a series type R/R but is better used on higher output and higher RPM multi cyl bikes. For some reason the Roadstercycle site doesn't show the SH775 now, wouldn't hurt to contact the guy and see if he can sell them at a better price than Polaris.
 
rweb said:
The Polaris part # is 4012941 for the SH775 R/R. I bought one a couple years ago for around $100.00 for my 08 T100 Triumph. The price is up to about $165.00 now so for my other Hinckley twin I bought a FH020AA with Triumph harness # T2500676 from Roadstercycle for $114.00 plus shipping. The harness can be used on both R/R's and is a good deal at about $10.00, just cut off the end you don't need and solder on your own battery and alt. connections. As far as I can tell the SH847 like the SH775 is a series type R/R but is better used on higher output and higher RPM multi cyl bikes. For some reason the Roadstercycle site doesn't show the SH775 now, wouldn't hurt to contact the guy and see if he can sell them at a better price than Polaris.
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Jack told me he was having a hard time getting the 775’s so he is moving to the 847’s. Just installed one on my Gold Wing and it seems to work well. The 847 is slightly larger than the 775
Shindengen SH775 (2018)

Disregard the polished fins and aluminum plate in the back. I had to do some mods to get it to fit.
Pete
 
Deets55 said:
I’m trying to get a SH775 reg/rec. for a project. It looks like a real Shindengen has gotten crazy expensive. Anyone know where I can source one out at a reasonable price. It seems like the going price is around $150.00 with generics going for about $65.00.The latter is reasonable, but quality is a unknown.
It also looks like Shindengen has a new model out SH847. Anyone have any info on that unit?
Pete
Click to expand...
I installed a SH775 regulator on a Yamaha known for cooking stator coils and regulators. I sourced mine from a CanAm 4X4. Triumph uses the same regulator on their motorcycles. But unless you have a 3 phase stator I don't see the point. The SH775 from a Triumph dealer is about $150. Get the Triumph pigtail too, $6.
 
Jackson5 said:
I installed a SH775 regulator on a Yamaha known for cooking stator coils and regulators. I sourced mine from a CanAm 4X4. Triumph uses the same regulator on their motorcycles. But unless you have a 3 phase stator I don't see the point. The SH775 from a Triumph dealer is about $150. Get the Triumph pigtail too, $6.
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Thanks Jackson5 already sourced one, that was from an older post
 
Sorry I know this is an old post but does anyone know where I can buy a genuine shindengen sh775 in the UK?
Chy
 
They are available on eBay UK, but they all seem to ship from the US.
 
baz said:
The trouble I have with eBay is I just don't know which ones are genuine ?
Click to expand...
This guy has a good blog on how to tell -

https://www.roadstercycle.com/

Though I've read that some of the fakes now have stainless bottom plates. The add needs to show the heatsink casting (from the top), the bottom plate, and the back side with the Shindengen logo.
 
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