Compu-Fire SERIES R/R Install

[mforbes]

I have the CE-602 on my GS1100G. I mounted it under the battery box. It is big. Heavy duty everything. Wires are 10 gauge. It fits nicely under there, but I have room on the bike. I was worried some about it hitting the swing arm during a big bounce in the road, but no problems with that even when I have a passenger and all my stuff in the trunks and side bags. For other bikes with clearance problems, this regulator might be to big unless you mount it on the front of the bike. I was going to mount it where my stock horns were mounted, but than decided to put it under the battery box which was better as I didn't have to extend the stator wires to the front of the bike. I was going to do the Comp-u-fire but at the time, it was out of stock. So I went with CE and the local HD shop ordered it for me.
Posplayr's write up on the Comp-u-fire sold me on the switch to these regulators. I was so tired of the every other year replacement of either the stator or rectifier.

Rob, No I am not a dealer; you can buy them from where ever you want.

You don't need 40 amps, but the 55402 is the only 3 phase SERIES R/R compufire has. All the rest are two phase.

Motorcycle Electric also have SERIES units like the 602 that are also 3 phase but as I mentioned before they are physically much larger.

Billy may have found a OE SERIES model but I have never seen or test one of the.
http://www.thegsresources.com/_forum/showpost.php?p=1407392&postcount=4


I did test this one two weekends ago,and it was a fraud.
http://www.thegsresources.com/_forum/showthread.php?t=173731

 

[Steve]

No mine is a 650GLD, but I don't understand, the headlight gets fed AC from the Stator, not regulated 12 DC?

No, the headlight does NOT get fed AC from the stator.

The headlight switch actually has two totally separate sets of contacts.
One set does, indeed, switch regulated 12 volt DC from the battery (and/or R/R).
The other set interrupts current flow in the third leg of the stator.

The theory was "if you are not consuming the electricity (by using the headlight), why generate it?" Any excess would have to be shunted to ground, so they just minimized the excess by turning off part of the stator. Since many (most?) of our bikes came to the US with the headlight switch defeated or missing, and the headlight running all the time, that switch is no longer needed. The wiring harness just bypasses it anyway, so we just bypass it even sooner and eliminate a few more connections.

.

 

[first timer]

Added a better description of the fundamental differences. In addition the SERIES Compufire puts out more voltage at low RPM (about 1 volt more or 14.2V by 1500 RPM v.s. about 13.2V OEM) and stay cooler along with keeping the stator much cooler.

SHUNT_vs_SERIES_RR_Compare_Tutorial

hey Jim you PDF links are down.

can you repost and update your links in this thread?

thanks,
R

 

[Andrew Vanis]

Compufire Pin Connectors - get them at NAPA - here are part#s

Compufire Pin Connectors - get them at NAPA - here are part#s

No pins came to crimp on to the stator wires. What type/size/etc do I need to take advantage of this nice setup? Can I find an automotive application pin kit that is right for this?

Compufire Pin Connectors - get them at NAPA - here are part#s

Since the CompuFire doesn’t come with the male pins, you can get them at your local NAPA - ~$1/pin, ~$0.50/grommet. The pins and grommets are stocked. NAPA can also get you the connector if you need it but it is a special order.

Pin – Male
Part Number: NW 725170
http://www.napaonline.com/Catalog/C...ther-Pack-OEM-Series/_/R-NW_725170_0282444263

Grommet
Part Number: NW 725152
http://www.napaonline.com/Catalog/C...iring-Grommet-Rubber/_/R-NW_725152_0293960868

If you want a completed wire (notice how the grommet is pinched in the second barb)
Part Number: NW 725436
http://www.napaonline.com/Catalog/C...ther-Pack-OEM-Series/_/R-NW_725436_0293957210

 

[posplayr]

hey Jim you PDF links are down.

can you repost and update your links in this thread?

thanks,
R

I think I redid most of them in the first post at least. I have 10 years worth of links go down with a free hosting service.

 

[Guest]

Thanks for the info, Jim, I just ordered one from Amazon to replace my Electrex shunt type.

 

[posplayr]

Thanks for the info, Jim, I just ordered one from Amazon to replace my Electrex shunt type.

Note this is what will be missing from the Compufire and you should probably order or otherwise obtain before hand.

http://www.thegsresources.com/_forum/showpost.php?p=1915267&postcount=44

 

[Guest]

Thanks, I have a NAPA just blocks away.

 

[posplayr]

An interesting thread discussing Compufire and SH-775 Series R/R's. It appears that in comparable tests the SH-775 gets hotter for high current applications and it was also noticed at high RPM for (16K RPM) there was one instance over voltage break down in regulation reported on the SH-775. Not likely an issue with any GS's around here.

http://www.vstrom.info/Smf/index.php/topic,20426.0.html

 

[Guest]

I installed the series R/R on my bike along with Jim's (pospalyr) SSPB fuse block replacement.
I took a 300 mile ride and my average temp has always been around 230-240 and up to 300 in high heat/hills/traffic. The average temp with the series R/R was around 200 and rose all the way up to 210 climbing the Grapevine (LA pass)
I was so happy not to have to keep an eye on my gauge and just ride.
BIG DIFFERENCE!

 

[rustybronco]

and it was also noticed at high RPM for (16K RPM) {above 9K} there was one instance over voltage break down in regulation reported on the SH-775.

Will install a digital Volt meter to keep an eye on it.

Thanks for the link.

 

[bwanna]

Will install a digital Volt meter to keep an eye on it.

Thanks for the link.

I actually did this on a previous effort. I bought one of those small LED volt meters on Ebay and installed it inside my tachometer. It took some patience to CAREFULLY cut a window just big enough for the 3-digit LED to fit through. It worked real nice. I think it was a .28" size digits, so the window was about 1.25"x.5"

 

[posplayr]

I actually did this on a previous effort. I bought one of those small LED volt meters on Ebay and installed it inside my tachometer. It took some patience to CAREFULLY cut a window just big enough for the 3-digit LED to fit through. It worked real nice. I think it was a .28" size digits, so the window was about 1.25"x.5"

Do you have any pictures you could post?

 

[Rijko]

GS1000, rebuilt engine with 1100 Wiseco's, WebCams, ported head, 34mm RS, fairly open Yoshi exhaust, no oil cooler (yet), planning to run a LED headlight.
I will use the bike for road use but also take it to the track.

i have been reading up on this subject, found Jim's Compufire installation instructions https://www.keepandshare.com/doc/4094057/compufire-intall-pdf-june-5-2012-11-34-pm-548k?da=y&dnad=y
Electronics is not my thing so i am looking for confirmation that i understood things right and some advice please.
Can you please check me on below ?

- both the Shendingen SH775 and the CompuFire 55402 are a huge improvement over stock and both replace the old regulator as well as rectifier
- The SH775 mounts to the original mounting points, the CompuFire will fit by drilling 2 new holes in the electrics plate.
- the CompuFire is a switching design that shuts off rotor outputs and in doing so does not draw load when not needed.
Advantages : - no power lost by drawing power that is not needed (up to 1/3 hp)
- less useless amps converted into heat in RR and stator
- cooler stator, extended lifespan and cooler engine oil
Disadvantage : CompuFire way more expensive than a SH775.

I am leaning towards the CompuFire because of less heat and small power gained.

the 55402 is the only 3 phase SERIES R/R compufire has. All the rest are two phase.

I found these 2, both 3 phase and 55402, they are the same ?

What confuses me is the description on the Harley one :

"The Compu-Fire 40 AMP 3 Phase charging systems provide 25 AMPS at idle and 40 AMPS continuously above 2800 RPM."

http://www.ebay.nl/itm/Compufire-Re...ms-55402-Vltg-F-Cmpfre-21120416-/322412618461

http://www.ebay.nl/itm/Compu-fire-5...hase-40-amp-For-Harley-Davidson-/172624436679


Thanks !

 

[Guest]

The Compu-Fire R/R will handle 40A but the Suzuki AC generator is incapable of rising to that level, so it doesn't matter. I got my Compu-Fire 55402 for size, It's a lot smaller than the SH-775 and pretty much loafs along staying cooler than what was on the bike. It's probably the better of the two but they both do the job. I doubt the power gain is anything more than theoretical in any case you wouldn't notice it but you can't go wrong with The Compu-Fire. I installed mine when Jim first started talking about the Series R/R's and would get another one if I ever have the need.

 

[Rijko]

i thought the switching design of the CompuFire would make sure that if only 25A is needed, only 25A is drawn, not 40A continuously. I must have misunderstood :shame:

 

[posplayr]

i thought the switching design of the CompuFire would make sure that if only 25A is needed, only 25A is drawn, not 40A continuously. I must have misunderstood :shame:

True; the reason to get rid on 40 amp fuse and use the 15 amp fuse in the fuse box is that you will have better protection.

 

[Rijko]

Jim - thanks, i take it you agree on my other conclusions and will be ordering the Harley one based on your advice ! Must have missed the tip on replacing the fuse in other threads, but will do that also.

Oldvet66, i found your GS850G-Compufire-R-R-and-Caltric-Stator-install thread and will be following it with interest !

Standing on the shoulders of giants here, thank you guys.

 

[Rijko]

Will install a digital Volt meter to keep an eye on it.

That is exactly what i planned to do.

Don't think this was mentioned in other threads on this subject, expect max. 14 volt.
Compu-Fire was quick to confirm, good service !

Comment: i found this in the Compu-Fire installation instructions (does not cover the 55402/55403)

TROUBLE SHOOTING
1. Do not use test procedure found in the factory shop manual. The Compu-Fire voltage regulator uses high efficiency series circuitry. The electronic circuitry is completely different.
2. With the main switch OFF, measure the voltage from the regulator output terminal to ground. The reading should be 12 - 13 volts. If there is no voltage reading, the battery is disconnected.
3. Start the engine and bring the RPM to 1500. The voltage should rise 1/2 to 1 volt. This indicates that the voltage regulator is charging. This completes the test.

Do these procedures and values also apply to the 55402/55403 RR ?

Is there a way to distinguish the 55402 from the 55403 ?

Hello Rijk,

This method of testing applies to all of the series regulators Compu-Fire manufactures. The 55402 and 55403 are the exact same regulator, the 55403 is supplied with extra wire and connectors to allow for custom applications.

Best Regards,

 

[850 Combat]

I'm leaning toward the Comp U Fire because it has fewer plugs.