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Compufire

M

mustangflyr

Forum Mentor
Finished the install of the Compufire regulator and hooked up the AGM battery then performed the Stator Papers tests and all's well. Volts are up now to spec and so far the unit stays cool to the touch, no test ride yet thunderstorm.
 
Compufire is the closest thing I have used that approaches miraculous.
Glad its working out for you.
 
They do bring an element of reliability to the table. Most will go with the cheapest fix, but in this case you get what you pay for. The system was designed for the Harley with a matching stator in order to add more capacity. We are limited by our stators, so I don't think the CompuFire is even running anywhere close to it's capacity. Time will tell, but I think these units will outlast the bikes.
 
Compufire

I have already been the route of using a Honda regulator so this was the obvious way to go. Not a direct replacement but the end result worth it so far.
 
There is no room to put anything larger in our bikes, but plenty of room in the Harleys. It is lucky we can get the R/R separately.
 
Last edited:
OldVet66 said:
There is no room to put anything larger in our bikes, but plenty of room in the Harleys. It is lucky we can get the R/R separately.
Click to expand...

The Compufire will fit in the stock location with some relocation of components, example the atc fuse box is now above the starter solenoid, aft of that now is the reg, then the master relay which is activated by the ignition switch. That provides power to the fuses. The turn signal control it now mounted forward of the ignition box on the battery holder. Believe it or not it fits quite well.
 
mustangflyr said:
Thanks to all for assistance, see if the picture clarifies how I did my install.
Click to expand...
Looks good to me.
icon_thumbsup.gif


.
 
mustangflyr said:
The Compufire will fit in the stock location with some relocation of components, example the atc fuse box is now above the starter solenoid, aft of that now is the reg, then the master relay which is activated by the ignition switch. That provides power to the fuses. The turn signal control it now mounted forward of the ignition box on the battery holder. Believe it or not it fits quite well.
Click to expand...

On my bike it mounted in the stock R/R location, I just had to grind down a couple of the cooling fins just a hair for clearance.
 
Compufire

Well ?#%$^!, now that's out of the way it seems there's a problem. After the install all well, volts right on the money per Stator Papers at 2500 (13.5+) and 5000 (14.4) rpm. Got back from a ride hooked up the meter and now we have mid 12's to just over 13 volts. Checked connectors, battery satisfied with B.Tender, ran through the checks again and volts are ok. This time I hooked up a multimeter to the battery and rode around, readings per spec then after a couple of miles the volts drop again, Also the regulator is toasty to the touch. Could the Compufire be defective? Any ideas? Thanks
 
mustangflyr said:
Well ?#%$^!, now that's out of the way it seems there's a problem. After the install all well, volts right on the money per Stator Papers at 2500 (13.5+) and 5000 (14.4) rpm. Got back from a ride hooked up the meter and now we have mid 12's to just over 13 volts. Checked connectors, battery satisfied with B.Tender, ran through the checks again and volts are ok. This time I hooked up a multimeter to the battery and rode around, readings per spec then after a couple of miles the volts drop again, Also the regulator is toasty to the touch. Could the Compufire be defective? Any ideas? Thanks
Click to expand...

The CF should not be so hot as to cause pain, maybe 110 degF. You should be able to hold your hand on the case and not feel so much heat you have to remove your hand.


If it is real hot it is sounding like it might be defective or failed prematurely. What does the Quick Test say? (see link in my signature)
 
Cf

Cf

Thank you for the advice I'm going to delve into tomorrow one step at a time following your procedure. One way or another I'll fix it.
 
Compufire

mustangflyr said:
Well ?#%$^!, now that's out of the way it seems there's a problem. After the install all well, volts right on the money per Stator Papers at 2500 (13.5+) and 5000 (14.4) rpm. Got back from a ride hooked up the meter and now we have mid 12's to just over 13 volts. Checked connectors, battery satisfied with B.Tender, ran through the checks again and volts are ok. This time I hooked up a multimeter to the battery and rode around, readings per spec then after a couple of miles the volts drop again, Also the regulator is toasty to the touch. Could the Compufire be defective? Any ideas? Thanks
Click to expand...

It seems the problem continues, stator checks out, battery voltage fine, checked connections all crimped and soldered, and ran all tests again. When running up to a couple of miles distance voltage readings easily in spec, then it drops back down about 1.5 -2 volts. Is this normal in a compufire? If the batteries satisfied should it continue to read 13.5 at 2500 rpm and 14.8- at 5000 rpm or the 12.7 I'm getting? At this point I'm going to return the Compufire as defective and try a new one. Thanks for all your suggestions.
 
mustangflyr said:
It seems the problem continues, stator checks out, battery voltage fine, checked connections all crimped and soldered, and ran all tests again. When running up to a couple of miles distance voltage readings easily in spec, then it drops back down about 1.5 -2 volts. Is this normal in a compufire? If the batteries satisfied should it continue to read 13.5 at 2500 rpm and 14.8- at 5000 rpm or the 12.7 I'm getting? At this point I'm going to return the Compufire as defective and try a new one. Thanks for all your suggestions.
Click to expand...

Without know what the results of the Quick test it is hard to determine if the bike is charging.

It is possible everything is fine, measurve teh voltages in seach step and report back
 
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