Series Regulator Source SH775

Has this SH775 R/R been vetted as a cheaper alternative to the Compufire? I've seen several people say they've bought one but I haven't seen (or overlooked) anyone coming back with reports of testing or comparison to the Compufire part.

My Honda R/R seems to have soiled the bed just before I left on a vacation ride to Georgia last Fall and the bike has been parked in the garage ever since. Now I'm finally dragging my butt out to there to turn some wrenches and I'm planning to replace the Honda unit with either a Compufire or one of these units. $64 plus shipping is s lot more attractive... A local friend I sold a GS450 to last year is also interested. I was going to pass my Honda unit on to him but now it's a paperweight so we're both in the market. I think it's a paperweight anyway, I did some testing last year when the charging system went south and I'm pretty sure both the R/R and stator showed failure indicators.

My apologies if this has been answered or debunked already, as usual over the last few years I've been away from the forum for a long time and I've been trying to take in WAY too much new info over the last few days.

/\/\ac

If it did, your toes would know about real quick- my 650 stator does not see any oil unless it's on side stand or lying on its side. I'm skeptical of any oil cooling effect - positive or negative - on stator. But I'm beginning to think some oil chemicals are detrimental to stator insulation.

When I was picking up some transformer wire for a stator rewire(I never did- but may as I have an RM stator core - surprise- surprise) from the local industrial rewinding shop he mentioned that much of the older shellac did not like prolonged exposure to gasoline.

Or the heating discolouration had reached its fullest extent for the range of temps it was being exposed to?

I am a firm believer of the touch test. My cover is hot not searing hot to the touch. The cooler running stator would act as a heat sink yes?

[posplayr]

Well Jim, it that stator is running at 400+ F then it will heat the oil as you say.

What stator company uses powder coat and how do you come by that information?

Ed,
Attached is a picture of a Electrosport R/R that was a brand new install with a FH0012A FET R/R after only 250 miles on a trip from SB out through Ojai on Highway 33 to Maricopa and back.

The reason I took off the stator cover was to deal with an oil leak. There is clear heat damage. Most of the trip I was going 40-70 mph and mostly in the 4000+ RPM range. I like to stay in the mid range power band in the twisties.

There is clear heat damage on the upper side of the stator (where there is less likely to be an oil bath). The baby blue epoxy insulation on the stator is burned but not yet crispy. I understand that it is common practice to use thermally conductive epoxy powder coat on these stators. While I don't know the specific brand used by Electrosport with some investigation I found you need right at about 400 degF just to cure powdercoat. I'm guessing that 450-500 degF is needed to char the stator.

I immediately fabricated an oil sprayer and then later after finding out about it added the Compufire. Last I looked at the stator it was the same condition as you see here following an additional 5000+ miles of riding. In other words the damaging effects were arrested.

Jim

[tom203]

Agree.

Keep in mind that in order to heat oil up to 270 F, the stator would have to be hotter than this by a fair amount. Does a GS stator run at 300 F due to shunted current?

If it did, your toes would know about real quick- my 650 stator does not see any oil unless it's on side stand or lying on its side. I'm skeptical of any oil cooling effect - positive or negative - on stator. But I'm beginning to think some oil chemicals are detrimental to stator insulation.

[tkent02]

Planning on putting a series regulator on a couple bikes, the 1100G and the 550/650 for starters.

I would be happy to do some test riding, keep track of temperatures before and after, etc. but I need a cheap oil temp gauge I can slap on there temporarily. Or maybe something that just sticks on the side of the stator cover...
Anyone know of one that is just a quick mount/dismount? I don't want a silly oil temp gauge on there permanently.

[salty_monk]

Ed,

Quite a chunk of travel coming up but I'd love to have a go at it one weekend if we can figure it out....
Got some new toys to show you too!

[Nessism]

Of course it does Ed, what else do you think is burning powdercoat off of the stators. It takes about 400 degF just to cure the stuff. Is it 450-500 degF to burn it to a crisp?

Well Jim, it that stator is running at 400+ F then it will heat the oil as you say.

What stator company uses powder coat and how do you come by that information?

[posplayr]

Agree.

Keep in mind that in order to heat oil up to 270 F, the stator would have to be hotter than this by a fair amount. Does a GS stator run at 300 F due to shunted current?

Of course it does Ed, what else do you think is burning powdercoat off of the stators. It takes about 400 degF just to cure the stuff. Is it 450-500 degF to burn it to a crisp?

[Nessism]

I remain extremely skeptical.

You're talking about roughly 850 Btu, and that's going to heat an engine that size by 30 F° in substantial airflow... I just don't see that happening. 850 Btu is a couple of light bulbs -- and that's going to sustain a temperature difference that great?

Sorry. Can't buy it. I'd have to see something that remotely resembles a scientific test, with some control of the half-zillion variables.

Agree.

Keep in mind that in order to heat oil up to 270 F, the stator would have to be hotter than this by a fair amount. Does a GS stator run at 300 F due to shunted current?

[robertbarr]

I remain extremely skeptical.

You're talking about roughly 850 Btu, and that's going to heat an engine that size by 30 F° in substantial airflow... I just don't see that happening. 850 Btu is a couple of light bulbs -- and that's going to sustain a temperature difference that great?

Sorry. Can't buy it. I'd have to see something that remotely resembles a scientific test, with some control of the half-zillion variables.

I have a 337. Unfortunately ? I just picked up a compufire for my Daytona.

[Nessism]

Anyone manage to get a meter/scope on one of these SH775's yet?

Hey Dan,

We have clamp on amp meters where I work. I'll work on "borrowing" it one day after work or on the weekend.

As far as Jim's oil temperature claim goes, count me as skeptic. I have both a Compufire and FH009 and plan to do back to back tests in the future.

[salty_monk]

Anyone manage to get a meter/scope on one of these SH775's yet?

I'm gonna chime in here too, on the temp subject. The load on the engine will cause it to work harder and create more heat, it won't solely be heat soak from the stator.

Taxable HP is a big deal too, if you don't believe that go pop the serpentine belt off the grocery getter in the driveway then go see how it runs.. it'll wake right up.

My recently purchased GS550 came with a battery that had been boiled out, so I am going to replace the RR right off, its a 4500 mile bike so Im hoping the stator is still good to go, I think the series reg is a no brainer, especially this sh775, for the price.. all I care about is charging performance and reliability, 10 degrees or 7/10s of a hp will make no difference to me, but to say it can't possibly make a difference? I won't.