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Makotosun
At-1 running after 5 years
- RT325
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Replied by RT325 on topic At-1 running after 5 years
Just kick start it you'll know straightaway if its charging.
Not much charge need to kick it & fire up.
You'll see the light come up bright & hold while the motor is above almost stopped.
Granted a battery charge is needed but if you try that first you'll get more of an idea of change than with a fully charged battery.
But ok there's other easy ways to test like volt meter across even when fully charged & should go to 14+ volts. Well, would go to that even with an almost flat battery with motor running & charging.
A good battery should come up quick with a ride as will be much more charge going in than a charger would do, but yep an overnight charge is good.
Not much charge need to kick it & fire up.
You'll see the light come up bright & hold while the motor is above almost stopped.
Granted a battery charge is needed but if you try that first you'll get more of an idea of change than with a fully charged battery.
But ok there's other easy ways to test like volt meter across even when fully charged & should go to 14+ volts. Well, would go to that even with an almost flat battery with motor running & charging.
A good battery should come up quick with a ride as will be much more charge going in than a charger would do, but yep an overnight charge is good.
14 Aug 2023 03:57
#31
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- Yojimbo
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Replied by Yojimbo on topic At-1 running after 5 years
Got a .75 amp charger last night. Charged overnight. Checked voltage in the morning, I think it was 13.5, I didn’t write it down. Disconnected the charger, went to work, came home at 4:30, checked voltage again, 12.59. Went for a short ride, maybe 2 miles, kept the revs up, no headlight, checked voltage again, 12.89v. I think this is the first time it has gone up after a ride.
I’m gonna go through the charging system tests as outlined by the service manual tomorrow evening. I’ll post my results.
I’m gonna go through the charging system tests as outlined by the service manual tomorrow evening. I’ll post my results.
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- RT325
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Replied by RT325 on topic At-1 running after 5 years
Sounds hopeful. Does the starter work. Any old cheap meter with dc volts capability put across the battery will tell you if it rises above its static voltage when started, if thats the right terminology. Then lights on it should still keep charging the same as compensates for battery draw with the regulator,
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- MarkT
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Replied by MarkT on topic At-1 running after 5 years
12.6 after resting is fully charged. Since your voltage was even higher after a ride you're likely just fine.
Electric start shares the same space with the generator but has its own circuits. So generator can work fine even though starter doesn't.
Electric start shares the same space with the generator but has its own circuits. So generator can work fine even though starter doesn't.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
15 Aug 2023 15:57
#34
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- Yojimbo
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Replied by Yojimbo on topic At-1 running after 5 years
The starter does not work.
I did the voltage regulator test as described in the service manual. 13.8v at 2500 rpm. Manual states 15.8-16.5v at 2500 rpm. I adjusted the regulator as described, it’s 16.0v at 2500 rpm.
Is this a wise adjustment?
Thanks for the responses, I’ve been a part of a number of technical forums in the past. This one is excellent.
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I did the voltage regulator test as described in the service manual. 13.8v at 2500 rpm. Manual states 15.8-16.5v at 2500 rpm. I adjusted the regulator as described, it’s 16.0v at 2500 rpm.
Is this a wise adjustment?
Thanks for the responses, I’ve been a part of a number of technical forums in the past. This one is excellent.
Sent from my iPhone using Tapatalk
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- RT325
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Replied by RT325 on topic At-1 running after 5 years
Blimey that sounds high or higher than neccessary. It's just an electric brake, so be loosing a few horses having it that high. But--if that what the manual says. Bummer the starter doesnt work. Could bridge the solenoid just to prove a point that its not 'that'. By memory it sends direct battery voltage straight down the 'heavy' green? to the stator field coils & brushes? without looking.
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- Yojimbo
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Replied by Yojimbo on topic At-1 running after 5 years
Starter works, switch wire was not fully inserted.
Adjusted the carb after I read Superhunky’s article.
Head was leaking, disassembled cleaned and deburred the head bolts and washers, new gasket, torqued the head. Started with the electric stater nearly instantly.
What should the idle rpm be?
Thanks for reading
Adjusted the carb after I read Superhunky’s article.
Head was leaking, disassembled cleaned and deburred the head bolts and washers, new gasket, torqued the head. Started with the electric stater nearly instantly.
What should the idle rpm be?
Thanks for reading
15 Aug 2023 18:56
#37
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- RT325
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Replied by RT325 on topic At-1 running after 5 years
Wow, impressed, you're into it 'now'. into it & onto it.
Idle is a personal prefference thing realy.
But the yamaha data for AT3E which is similar with electric start says 1300-1400rpm.
If motor gets down to say 1000 guessing a bit that it'll drop onto retard & may stop it.
But if its got full compression it might idle on retard & hang on.
But thats too slow anyway. So up to you realy.
Idle is a personal prefference thing realy.
But the yamaha data for AT3E which is similar with electric start says 1300-1400rpm.
If motor gets down to say 1000 guessing a bit that it'll drop onto retard & may stop it.
But if its got full compression it might idle on retard & hang on.
But thats too slow anyway. So up to you realy.
15 Aug 2023 20:46
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- Ht1kid
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Replied by Ht1kid on topic At-1 running after 5 years
Retorque your head in the morning before you ride it again cold
15 Aug 2023 21:09
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- MarkT
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Replied by MarkT on topic At-1 running after 5 years
Congratulations!
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
15 Aug 2023 21:22
#40
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