| Author | Message | ||||
     Cataract2 |
Ok, I'm trying to get a handle on what the pros and cons are between the FH0012A and the Compufire regs. There seems to be a ton of info out there on both, but I'm unable to filter out what the pros and cons between each is. I have an 08 1125R and have never been happy with how my charging looks while riding. So I'm looking into either of the two and can't decide which I would want to go with. | ||||
| Nuts4mc |
The OEM part is made by Ducati - it has a SCR in it to control the charging of the battery - OK but kinda old technology - want more info google SCR the Shendegen FH00XX has a MosFET in it... smarter than the SCR - used in most newer rice burners: here's a good post about the Shendegen from another site ( Triumph-Rat): http://www.triumphrat.net/for-sale-parts-hinckley- classic-twins/149637-mosfet-rectifier-regulator-co mplete-with-modified-harness.html do a search on the Compufire - it has yet another strategy ( circuit design) when it comes to rectifying and controlling charging If you search my "ID" you'll see pictures of my install of a FH0014 - it doesn't require any "new" connectors - just cut and solder - for the battery hook up the (-) terminal is closest to the edge of the FH0014 case...mine has been working very well since December - I also added a large Gauge wire ground (4 AWG x 40" long - Auto Zone P/N "Duralast" DW440B) from the ground terminal by the swing arm pivot under the seat up over the shock down past the cylinders and bolted to the block using a bolt that holds the starter to the engine...it appears to help "hot starts" It sounds like you have "analysis paralysis"...many young engineers suffer from the same disease...What solution gives you the best Value? (Value=Price+ Performance+Quality...in EQUAL amounts) quit thinking and start doin...summer is here ...'nuff said - I gotta go riding! | ||||
| Posplayr |
This is a simplified explaination; the SERIES does not Short the windings like the SHUNT so is easier on both the stator and the R/R. The data was taken with a 83 Suzuki GS1100 that needs about 14 amps at 5K rpm. The Depending upon your loads and when teh current comes in your results may vary, but the SERIES will never stress the stator and R/R as much as the SHUNT. http://www.posplayr.100megsfree3.com/FH012AA_Charg ing/RR_Tutorial.pdf | ||||
| Dannybuell |
do a search on Posplayr. He is an EE and does a fairly good job of explaining just what you are pondering Shunt v.s. Series regulators. | ||||
| Cataract2 |
Well, here's the thing. I've got an FH0012A currently in use. I find that when I start my bike the charge is around 13.9-14 volts. After I've been riding for awhile and the fans turn on the charge slowly drops and settings in the low 13s with the fans running and just stays there unless I get moving. With that you are saying it would seem like my reg is shunting more current once the battery is charged and that's why my volts drop and just stay there. True? Since the compufire was found out, I've been toying with pulling my FH0012A and swapping in the Compufire as I also have read that it is easier on everything in the line. I would sell the FH0012A if I go this route. | ||||
| Cataract2 |
Posplayr, trying to find your post that explains things. Not really coming up with anything. | ||||
| Dannybuell |
http://badweatherbikers.com/buell/messages/290431/ 638679.html?1308894705 | ||||
| Cataract2 |
Anyone on my above question? | ||||
| Avc8130 |
You might be using 100% of the stator capability and the regulator might not be shunting anything. Remember, the 08s were considered to have a mediocre (albeit reliable) output from the charging system. ac | ||||
| Posplayr |
avc8130 - is there a general description of the 08 charging performance v.s. 09? | ||||
| Zac4mac |
I did some charging tests back in early 2008.
Here's a test looking at the temp of the R/R as a factor.
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| Cataract2 |
You know Zac. That looks like how mine is looking. Question for you, you have the multi LED voltage gauge on your bike that American Sport Bike sells correct? When you stuck at a light, do you only have 1 green LED lite? Does it maybe flicker a bit when you've first started the bike for the day? | ||||
| Zac4mac |
Ryan - I think, on a hot day at a light it will be one green. At first start, when cold or still "cool", under 180, I see two greens. On the highway, it's always 2 greens. Basically the tests I ran said my charging system was working pretty well, which a later 25k miles corroborates. Z | ||||
| Cataract2 |
My one green will flicker when it's hot when I'm stopped. While moving it stays steady. | ||||
| Cataract2 |
Well, since I decided to order some tire repair tools for use on the road I went ahead and ordered the compufire 55402 regulator which others have ordered. After I run it for a bit to ensure it will work I will be selling my FH0012A. | ||||
| Chessm |
i think anyone of us with 09s would be happy to trade stators with you. ours puts out more charge, ya thats it. | ||||
| Cataract2 |
Well, while I don't have the issues you 09 guys have, I am planning on getting my 08 rewound this winter while it's down for the winter. I just don't trust what I'm seeing with it right now. | ||||
| Posplayr |
Zac4mac - Thanks for that data. Has anybody take any current data? |
