GazW Posted March 20, 2016 Share Posted March 20, 2016 Is 14.65v when revving high a bit much?I boiled a battery last week. Swollen and hissing after a long ride, so I've replaced the reg/rec and new battery and that's what I'm getting on the multimeter Quote Link to comment Share on other sites More sharing options...
Stu Posted March 20, 2016 Share Posted March 20, 2016 14.7v is the max charge rate Quote Link to comment Share on other sites More sharing options...
Tango Posted March 20, 2016 Share Posted March 20, 2016 so long as it doesn't go much higher you should be OK. ..... Quote Link to comment Share on other sites More sharing options...
GazW Posted March 20, 2016 Author Share Posted March 20, 2016 Cheers.Will it come down at all? Does seem a bit close to the limit, and the reg is situated right above the exhaust. Do they become less efficient as they get hot? Quote Link to comment Share on other sites More sharing options...
Stu Posted March 20, 2016 Share Posted March 20, 2016 when you normally start a bike the reg/rec will put full charge in until the battery is full then it should level off a bit any extra charge is put out as heat you usually find the volts will stick to around the same but the amps will drop Quote Link to comment Share on other sites More sharing options...
eastanglianbiker Posted March 20, 2016 Share Posted March 20, 2016 make sure the reg/rect is mounted firmly against metal and use some heatsink cream on the rear of it that helps it dissipate the heat from it Quote Link to comment Share on other sites More sharing options...
GazW Posted March 20, 2016 Author Share Posted March 20, 2016 when you normally start a bike the reg/rec will put full charge in until the battery is full then it should level off a bit any extra charge is put out as heat you usually find the volts will stick to around the same but the amps will drop So it should be alright? I fell lucky, it must have been overcharging for a while, I took my Mrs to Haworth for her birthday last Sunday, we thought Yorkshire had an eggy smell, until we realised it was following us. Luckily I was near home by the time I realised and managed to limp home at low revs, but when I got it home and let the battery cool I went to start it to check the voltage and it was goosed, wouldn't turn over. I'll be out a fair bit over Easter and don't fancy getting stranded if I haven't cured it. Quote Link to comment Share on other sites More sharing options...
GazW Posted March 20, 2016 Author Share Posted March 20, 2016 make sure the reg/rect is mounted firmly against metal and use some heatsink cream on the rear of it that helps it dissipate the heat from it would it be a computer shop I'd be looking at for stocking this? Quote Link to comment Share on other sites More sharing options...
eastanglianbiker Posted March 20, 2016 Share Posted March 20, 2016 places like maplins will stock it no ideas it the bigger chain stores will stock it Quote Link to comment Share on other sites More sharing options...
Stu Posted March 20, 2016 Share Posted March 20, 2016 So it should be alright? I wouldnt like to commit myself to a yes!! as you have only tested it at stationary and not over a period of time! did you check the old reg/rec? I would also check the input voltage to the reg/rec too put the volt meter on AC across the 3 wires from the stator obviously you can only test across two wires at a time so you have to do varying combinations you are looking for around 70V ac more could cause the reg/rec to overheat and blow Quote Link to comment Share on other sites More sharing options...
GazW Posted March 21, 2016 Author Share Posted March 21, 2016 So it should be alright? I wouldnt like to commit myself to a yes!! as you have only tested it at stationary and not over a period of time! did you check the old reg/rec? I would also check the input voltage to the reg/rec too put the volt meter on AC across the 3 wires from the stator obviously you can only test across two wires at a time so you have to do varying combinations you are looking for around 70V ac more could cause the reg/rec to overheat and blow I'll check that then. I didn't check the old reg/rec. Would have done, if the old battery worked, but it was properly goosed, I didn't want to hook it up to the new battery.There's a large 3 pin block connecter under the tank. Would I be able to just test it on the pins on that? Will it run without the reg/rec hooked up.There's that, an earth and a little two pin block connecter. That's all the wires that were on it. Quote Link to comment Share on other sites More sharing options...
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