Post by abscooters on Sept 27, 2011 11:17:38 GMT -6
There are 2 different fans. The one that has the Y type mounting, those ones are good. Then there is the square ones that is usually in the MC-54 reflex copies, those are the ones that most often pull too much voltage. They are often in the linhais too, but they can handle the higher wattage fan.
And lighting is the 2 35w headlight bulbs, Their 3-5w counterparts (I forget why they even install these, something to do with a real old DOT or EEC lighting requirements), the 2 5-8w tailight bulbs the half a dozen 3-5w dash and marker light bulbs, not to mention when turn signals and brake lights when on. Tailight bulbs are 5-8 watts on the dim element and 21 watts on the bright one. And on all the dc stuff, you have to consider voltage drop on that skinny ass 18-22 guage wire, not to mention what it loses getting rectified and regulated. I don't know what it takes for sparkplug ignition, but it seams to come out of the same ciruit, unlike the GY6 setup where it is usually separate.
Out of all the Bali MC-13 with the shortcase, Y-type fans and less lighting I have hardly ever encountered a charging problem, when I have it is usually a failed diode or brake lights stuck on. The MC54 that usually has more dash & marker lights the voltage chewing DC fan, longer main harness, a clock and usually a radio, I have had a ton of charging issues. The manufacturers must know this, cause they often have a trickle charger installed as standard equipment in hopes of having the battery absorb the brunt of it.
Yes the linhai has a much more stable charging system, kind of funny they usually use the same regulator but a smaller plastic diode. Amazing what an extra 100 watts will do. I don't know if the CF-motos spec out to 240W, but I'll bet they are damn close if not correct. Who knows on all the replacement stators running around, look the same in the box, LOL.
Post by abscooters on Sept 24, 2011 10:40:19 GMT -6
Whatever Honda specs are, thats what the clone specs are, I don't know, I don't rarely test anything. When something doesn't work I take one off the shelf and plug it in. Out of the many many 250's with electrical issues I have serviced, only a couple ended up being the stator.
The majority of the charging issues with these china machines is what they plug into it outside of the motor. The MC-54 (cn250 long case) honda reflex copy has known charging issues, usually it is the radiator fan. It charges at barely a volt over battery voltage(another common Honda design flaw) and then when the fan kicks on, it runs at a volt under battery voltage. Then if you got cooling issues, fan is running way more than it should, or they have too low of a fan switch temperature, it runs too much, draining the battery while riding instead of charging.
I had one in here last month that I had to build a complete harness for, something got fried somewhere. The owner tried regulator & diode. I tried stator, ended up being a short in the wiring harness.
I have also seen the MC-13 Bali 250's be the brake light switches stuck on. I have found that running a little higher gauge red wire from the battery side of the charging diode(usually the red wire) directly to the battery terminal helps kick up the charging by a quarter to half a volt (alot in Honda engineering tolerances).