Poll for Compufire R/R Users

[Nessism]

I don't know why anyone would purchase a Compufire R/R in this day and age when a SH775 series type R/R is available for much cheaper while still being a high quality unit.

One thing I can tell you guys also is that using a series R/R will not noticeably reduce oil temperature in your engine. I'm repeating myself again here but the only way for an R/R to affect oil temp is if a large amount of current is shunted back to the stator to the point where the stator is heating up way HOTTER than that of the oil. A GS will run oil temps well over 200F and I do not believe shunting current will spike the stator temp above this level. In order for the stator to heat up the oil it would have to get this hot all the time. Another thing is that there is very little oil inside the stator cavity; the only oil in that part of the engine has to go through a small hole in the engine cases. So even if the stator was baking like an electrical heater and running above 250F or so there isn't enough oil coming in contact with this hot device such that the entire quantity of oil in the crankcase plus all the mass of the engine is heated above the normal engine temp. Nope, ain't gonna happen.

Not to mention I performed an oil temp test on my GS1000 and ran both a SH775 and a shunt R/R for 30 miles each, back to back, and there was NO difference in measured oil temp. Period. End of story.

[posplayr]

I don't know why anyone would purchase a Compufire R/R in this day and age when a SH775 series type R/R is available for much cheaper while still being a high quality unit.

There are very good reasons for purchasing a Compufire as well as why the oil temperature drops.

[Nessism]

There are very good reasons for purchasing a Compufire as well as why the oil temperature drops.

The Compufire R/R's are an excellent product. An YOU Jim were the primary driving influence which got everyone around here onboard with purchasing series type R/R's. My only point was that since the SH775 has hit wide spread release, AND IS CHEAPER than a Compufire, purchasing one has become the defacto standard these days.

[posplayr]

The Compufire R/R's are an excellent product. An YOU Jim were the primary driving influence which got everyone around here onboard with purchasing series type R/R's. My only point was that since the SH775 has hit wide spread release, AND IS CHEAPER than a Compufire, purchasing one has become the defacto standard these days.

The primary reason to buy a Compufire is it is much easier to fit and will fit in the stock location of a GS1100EZ/ED. You claimed you know of know reason.

[mnferwerda]

Fit was the main reason I bought a Compufire over the SH775. I managed to squeeze it in the same place as the other one. With the SH775, I would have had to relocate it someplace else.

[posplayr]

Fit was the main reason I bought a Compufire over the SH775. I managed to squeeze it in the same place as the other one. With the SH775, I would have had to relocate it someplace else.

You can then find satisfaction in the knowledge it also provides:

• a slightly higher low RPM voltage (0.2V) and
• dissipates less power; probably (about 5 watts) and
• has zero drain current compared to about 2 mAmp for the SH775.

[GSXR7ED]

Duplicate thread start:

http://www.thegsresources.com/_forum/showthread.php?243944-Series-R-R-installations-at-the-GSR&p=2349108&highlight=#post2349108

Ed

[kaufen]

I installed the Cycle Electric 601 on my 1000G. I voted 2000 miles.

[OldVet66]

I will use the Compu-Fire again if I ever build another bike that needs the conversion. Smaller size is the motivation for me over the SH-775

[850 Combat]

I don't like that the Shindengen SH775 has a big plug on it. It doesn't come with the connecting plug and pigtail, does it?

I go to trouble to minimize the number of connectors, due to eventual resistance and heat. The Compufire looks like I could just solder the pigtail.

[OldVet66]

I don't like that the Shindengen SH775 has a big plug on it. It doesn't come with the connecting plug and pigtail, does it?

I go to trouble to minimize the number of connectors, due to eventual resistance and heat. The Compufire looks like I could just solder the pigtail.

No the SH-775 does not come with the power and stator lead plugs but you can get them herehttp://easternbeaver.com/Main/Elec__...onnectors.html) The Compu-Fire could be easily soldered or use the 14-10 gauge connectors here: (http://easternbeaver.com/Main/Elec__...etri-pack.html)

[Nessism]

The SH775 does have a larger foot print but it's lower profile than the Compufire R/R. It's also about 1/2 the cost.

Shindengen makes the SH775 and they are very robust units. You can purchase used units off ebay without much concern about getting a bad unit. A quick search on "Polaris RZR Regulator" turned up a lot of hits. There are counterfeit units on the market so make sure you get a photo showing the top of the unit so you can verify the SH775 part number printed on the unit. Here is one such unit that is selling for less than $40 shipped. http://www.ebay.com/itm/2012-POLARIS...dXKgt1&vxp=mtr

Triumph part number T2500676 is a nice pigtail harness with the connectors needed for the SH775. Last time I checked they were less than $10. You can always use simple spade terminals on some wires and plug them directly into the SH775 if $10 is too much for you. Use silicone to fill up the cavity after you make the connectors to provide water protection.

[posplayr]

bump...................

[mrbill5491]

My compufre is going on 8+ years and is still going strong. And I would do another Compufire if I need too.