Jeans Voltage Regulator Installed, Performance (2015)

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jaydee75

jaydee75

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Reference Thread: voltage-regulators-t22113.html

Ok, I've had the Polaris SH775 regulator installed for 2 weeks and I am well pleased with the performance. I can't thank Jean enough for his discovery.
Before I removed the MK3 dual Zeners, I took some charging data. Then I took the same data after installing the new regulator. This is with the stock Lucas headlight on high beam:

RPM Battery Voltage ZENERS/SH775
0 12.48/12.71
1200 12.43/12.83
2000 13.00/14.29
2500 13.06/14.30
3000 13.26/14.28

You can see that the new regulator outputs a nice charging voltage at fairly low rpms, and my tri-color charging LED is green most of the time now, while with
the zeners it stayed red at low rpms.
The biggest benefit is explained by Jean that the alternator is not stressed nearly as much as other regulator systems, resulting in longer life. This being a result of being a non-shunting type regulator.
After 3 trial rides, the regulator has never been more than warm (est <120F) to the touch.
I'm happy.
Jaydee
 
Sorry about the formatting of the above data. It looked ok on the preview. I hope you can read it.

Jaydee
 
Beautiful! Based on your numbers, it appears that you're charging at 1200 and above, which is excellent. What stator are you using (stock or 3-phase) and headlight wattage? As you can read in uprated-charging-system-t19016-60.html#p304919, I'm back with the 41-year-old stock system, and would still like to get a bit more out of the old girl (heated suit?).

Nathan
 
I still have the original single phase stator. All I did is unplug the zeners and plug in the new regulator. The headlight has the original incandescent bulb.
Jaydee
 
Thanks for the info Jaydee. I just got my first Commando going and want to keep it simple and stockish. I may have other problems but of the 3 old zeners I have 2 don't work, volts go to 16 and the 3rd it goes to 15 volts so I've been riding it slow around town hoping I don't fry anything and not wanting to spend $75 on a new zener if something better is available.
 
If I were in the market for a new regulator, I'd sure be looking at the SH775. It would be interesting to see someone put it on an early bike with the original rotor/stator and what the voltages turned out to be. Mine doesn't start charging until somewhere around 2500.
 
DogT said:
If I were in the market for a new regulator, I'd sure be looking at the SH775. It would be interesting to see someone put it on an early bike with the original rotor/stator and what the voltages turned out to be. Mine doesn't start charging until somewhere around 2500.
Click to expand...

Paging DynoDave.... :mrgreen:
 
jaydee75 said:
Reference Thread: voltage-regulators-t22113.html

Ok, I've had the Polaris SH775 regulator installed for 2 weeks and I am well pleased with the performance. I can't thank Jean enough for his discovery.
Before I removed the MK3 dual Zeners, I took some charging data. Then I took the same data after installing the new regulator. This is with the stock Lucas headlight on high beam:

RPM Battery Voltage ZENERS/SH775
0 12.48/12.71
1200 12.43/12.83
2000 13.00/14.29
2500 13.06/14.30
3000 13.26/14.28

You can see that the new regulator outputs a nice charging voltage at fairly low rpms, and my tri-color charging LED is green most of the time now, while with
the zeners it stayed red at low rpms.
The biggest benefit is explained by Jean that the alternator is not stressed nearly as much as other regulator systems, resulting in longer life. This being a result of being a non-shunting type regulator.
After 3 trial rides, the regulator has never been more than warm (est <120F) to the touch.
I'm happy.
Jaydee
Click to expand...

Glad you confirmed that the SH775 is the right choice. While looking for info, it became apparent that this is a known problem on many other bikes with permanent magnet alternators, at least know to those looking past the first failure. The only reason for manufacturers to install shorting type regulators is for planned obsolescence or to put it another way, to make sure something breaks past the warranty period. The only time they seem to put better regulators is when they give unlimited mileage warranties or the bikes are more touring oriented. The component count for either regulator is about the same so why make a shorting regulator when there is a better alternative?

Jean
 
For sure they didn't have these kind of regulators available in 1969 much less 1970. Did anyone else use Zeniers other than Norton?
 
DogT said:
Did anyone else use Zeners other than Norton?
Click to expand...

AJS/Matchless, BSA, Triumph, Royal Enfield, Indian Lambretta (SIL) etc...etc...
 
Yeah, most brits used zener's for voltage regulation. My 1966 TR6R did and also my current 1970 T120R.
The deal with the zeners is: as of now, june 2018, they seem to be unobtainium. All the suppliers are out of them.
The lucas ones have been gone a long time and the aftermarket ones have ceased production due to a health problem of the guy sourcing them from (yeah,you guessed it-china). So this will be a rub with the judges at classic bike shows looking for the zener and heat sink. Not to worry. Just put a dead zener in. The judges don't have VOM's and usually do not even ask for the bike to be started. I had my 1966 Cheney 650cc Triumph at the Quail show in Carmel. Ca. and the judges had never seen one before. (Rider magazine Jan 2017. retrospective, last pg).
It has no battery and they were suspicious and asked me if it ran. I fired it and a huge crowd gathered.
The judges finally asked me to shut it down .
Recently the zener in my 1970 T120R failed to connect to ground (regulate voltage)@ (13.5-15.3 volts). This is a common failure mode. I tested voltage @ the battery reving to about 4Krpm and the voltage went to 16.5 volts. It was well above the max voltage design envelope of my Boyer ignition and smoked the black box.
Yes, I ordered the SH775. Amazon had one, about $45. (that is the price of just a zener,i f you could even find one). The SH775 charging circuit voltage is perfect for the lead acid gel batteries and I won't smoke the electronic ignition black box. Huge thanks to Jean for his attention to detail.
 
rustee said:
Y
...Yes, I ordered the SH775. Amazon had one, about $45. (that is the price of just a zener,i f you could even find one). The SH775 charging circuit voltage is perfect for the lead acid gel batteries and I won't smoke the electronic ignition black box. Huge thanks to Jean for his attention to detail.
Click to expand...

I would be very surprised if what you get is a real SH775 for $45.00 there are a lot of fake ones out there since Shindengen also made a whole slue of shut style in the same housing, and most vendors will not show you the beck side which should have the Shidengen logo with the model number plainly visible, and China inc is very good a duplicating a good thing...
 
Yes at 45 $ it seems pretty strange , but.........and what about Cycle electric regs which are series too..........?
 
@rustee at 45 bucks I can guarantee that your SH775 is a fake!

Be very careful, as pointed out already, the market is awash with cheap knock-offs.

These contain the same $1 rectifier that most of the rec/reg manufacturers use, which is NOT series type.

Jeans Voltage Regulator Installed, Performance (2015)

The chipset used is not a bad thing - it’s a common replacement for the original Lucas 49072, however be aware what you are getting here - leaking to heat and keeping the load on the alternator like most of the everyday rec/regs do.

At this $45 price though, they will be poorly assembled, and I guarantee that the chipset will not be potted properly to give you decent heat transference to the heat sink of the casing.
Do also consider that they have probably spent 35 of the 45 dollars on making it look like a SH775.

There is a brilliant video here that gives you some pointers on how to distinguish a fake Shindengen unit from the real thing.




Buyer beware - none of us want to see a post containing pics of your burnt out bike (not even a Harley deserves a fate like that)
 
gtiller said:
@rustee at 45 bucks I can guarantee that your SH775 is a fake!

Be very careful, as pointed out already, the market is awash with cheap knock-offs.

These contain the same $1 rectifier that most of the rec/reg manufacturers use, which is NOT series type.

View attachment 5474

The chipset used is not a bad thing - it’s a common replacement for the original Lucas 49072, however be aware what you are getting here - leaking to heat and keeping the load on the alternator like most of the everyday rec/regs do.

At this $45 price though, they will be poorly assembled, and I guarantee that the chipset will not be potted properly to give you decent heat transference to the heat sink of the casing.
Do also consider that they have probably spent 35 of the 45 dollars on making it look like a SH775.

There is a brilliant video here that gives you some pointers on how to distinguish a fake Shindengen unit from the real thing.




Buyer beware - none of us want to see a post containing pics of your burnt out bike (not even a Harley deserves a fate like that)
Click to expand...
 
I installed one of these regulators on a friends Honda ACE 1100 3 years ago. The stock Honda regulator did last 45,000+ miles but the Polaris unit was half the price and the Honda V-Twin forums were all giving this mod a big double thumbs up. After the install we saw charging comparisons very nearly identical to what jaydee75 documented. We had a low mile ACE1100 to run the comparison against. Sooooo, 3 years and 28,000 miles and my buddy hasn't had a lick of problems. At about $100 dollars for the SH 775 plus the six pack and a pizza install fee, my friend is very satisfied.
 
Jeandr said:
Glad you confirmed that the SH775 is the right choice. While looking for info, it became apparent that this is a known problem on many other bikes with permanent magnet alternators, at least know to those looking past the first failure. The only reason for manufacturers to install shorting type regulators is for planned obsolescence or to put it another way, to make sure something breaks past the warranty period. The only time they seem to put better regulators is when they give unlimited mileage warranties or the bikes are more touring oriented. The component count for either regulator is about the same so why make a shorting regulator when there is a better alternative?

Jean
Click to expand...

Hello, Jean. Thanks for your work on this. I have been able to open this thread:
https://www.accessnorton.com/Norton...e-regulator-installed-performance-2015.20160/

but the other previous thread references (like voltage-regulators-t22113.html ) will not open within Access Norton if I click on them. Can you provide a "full HTML" URL that will allow me to see either the earlier threads or any important later ones. (If opened my primary case to find a melted alternator in the past -- I'd prefer not to do it again.) Thanks! BH
 
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