speedo problems
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Joined: Feb 2020
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From: oh-io
speedo problems
Good morning. this is going to kinda long.
i have a 2003 dyna wideglide, the speedo has stopped working,kinda.
i was out for a ride sunday morning when the speedo needle went to zero.
i slowed down to about 40, it started working again. sped up and it went to zero again, the trip odometer also went out.
im going about 60, i pullin the clutch and everything starts working again. let out on the clutch and the needle goes to 60 and is froze there.
pull in the clutch and it goes to zero. the speedo seems to work ok at speeds below 40. also i don't think the fuel gage is working correctly and the turn signals don't seem to cancel.
watch youtube vidos and all seem to say change the SPEED SENSOR, it's a noted problem, ok so i get a new sensor and change it.
WHAT A P.I.A.. anyway, put the bike back togather and i still have the same problems. the bike runs great, no misfires no problems at all also it is carbureted..
CAN ANYONE HELP ME.
i have a 2003 dyna wideglide, the speedo has stopped working,kinda.
i was out for a ride sunday morning when the speedo needle went to zero.
i slowed down to about 40, it started working again. sped up and it went to zero again, the trip odometer also went out.
im going about 60, i pullin the clutch and everything starts working again. let out on the clutch and the needle goes to 60 and is froze there.
pull in the clutch and it goes to zero. the speedo seems to work ok at speeds below 40. also i don't think the fuel gage is working correctly and the turn signals don't seem to cancel.
watch youtube vidos and all seem to say change the SPEED SENSOR, it's a noted problem, ok so i get a new sensor and change it.
WHAT A P.I.A.. anyway, put the bike back togather and i still have the same problems. the bike runs great, no misfires no problems at all also it is carbureted..
CAN ANYONE HELP ME.
Last edited by oldharleyrider2; Aug 22, 2023 at 07:20 AM.
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From: backwoods
If volts went high, amps would go down. If volts went down, amps would go up and trip breaker maybe. Never had one trip. I thought reset time was longer.
Touring bikes they were changed out for bigger one. Not sure all models and years.
I can see volt flucations doing weird stuff. Breaker surprises me. It's cheap might as well replace.
Touring bikes they were changed out for bigger one. Not sure all models and years.
I can see volt flucations doing weird stuff. Breaker surprises me. It's cheap might as well replace.
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From: New Hampsha
The circuit breaker is there to prevent the pipe from bursting.
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From: backwoods
Load or watt has not changed by raising voltage.
Low volts from long run or cheap extension cord, or 208 instead of 240, can raise amps, and heat on a motor.
It is why we have transformers. The power company doesn't transmit power house to house at 240.
Plumbers need to stay from electric
Last edited by Rounders; Sep 21, 2023 at 09:41 AM.
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From: New Hampsha
That's only true if you have some kind of exotic constant wattage load. Ohm's law states E=IR. R is the resistance of your load which doesn't change. So, if E (volts) goes up, so does I (Amps).
That's true, but the reason is the motor will not reach its rated speed without the rated voltage. As a motor speeds up it actually generates voltage, called reverse EMF, which counteracts the current coming in. The faster the motor goes, the more reverse EMF it generates and the less current it consumes. This logic only applies to electric motors, though, and not to light bulbs or electronics. It has nothing to do with what happens to the electronics in the speedometer when the system voltage goes too high.
Low volts from long run or cheap extension cord, or 208 instead of 240, can raise amps, and heat on a motor.
Last edited by John CC; Sep 21, 2023 at 07:15 PM.
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From: backwoods
But also in this case load is fixed. So wattage is not changing. So if v goes up, current goes down. Watt=vi. I use this more than v=ir.
100 watt light bulb @12 volts draws 8.3 amps
100 light bulb at 15 bolts draws 6.6 amps.
100 VA either way.
100 watt light bulb @12 volts draws 8.3 amps
100 light bulb at 15 bolts draws 6.6 amps.
100 VA either way.
Last edited by Rounders; Sep 21, 2023 at 09:27 PM.
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From: backwoods
Volts 12 = Ix10 ohms. I =1.2
15 volts =Ix10 ohms. I= 1.5
Yes current goes up.
I work with power so I think about VAs not resistance. If load is fixed, volts go up and current go down
So it depends how you look at. Your headlight is the load in wattage. Wattage doesn't change, so v goes up current goes down
I am having fun thinking about this . So I think the answer is you have work on power, which is the load on stator
But in this case the source has increased due to bad regulator. But head light is same size. But you also have battery. Got to think about that.
This fun
15 volts =Ix10 ohms. I= 1.5
Yes current goes up.
I work with power so I think about VAs not resistance. If load is fixed, volts go up and current go down
So it depends how you look at. Your headlight is the load in wattage. Wattage doesn't change, so v goes up current goes down
I am having fun thinking about this . So I think the answer is you have work on power, which is the load on stator
But in this case the source has increased due to bad regulator. But head light is same size. But you also have battery. Got to think about that.
This fun
Last edited by Rounders; Sep 21, 2023 at 09:45 PM.
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From: backwoods
That's true, but the reason is the motor will not reach its rated speed without the rated voltage. As a motor speeds up it actually generates voltage, called reverse EMF, which counteracts the current coming in. The faster the motor goes, the more reverse EMF it generates and the less current it consumes. This logic only applies to electric motors, though.
But I get if not meeting rates speed something funky could happen. Curious.
Do you have any articles?
Put in a buck boost or auto transform to get to 240, is what you should do.