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Makotosun

76 DT 250 high charging voltage

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Replied by Gr8uncleal on topic 76 DT 250 high charging voltage


As an experiment, and if it is possible, try fitting a 12v bulb into the headlight. Some owners of the earlier bikes do that instead of fitting a regulator.
18 Aug 2020 00:46 #11

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Replied by Pedalcrazy on topic 76 DT 250 high charging voltage

I looked in my 75/76 Yamaha service manual and says DT250B 8.5V daytime charging at 2000 RPMs. At 8000 RPMs it is still 8.5V. Nighttime charging rate 7.0V at 2000 RPMs and 8.0V at 8000 RPMs. This is measured at the battery while connected to the bike of course. Doesn’t sound like your far off.
1978 DT400E
1976 DT400C
1973 RT3
1971 RT1B
1968 DT1 (3)
18 Aug 2020 15:43 #12

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