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Discussion Starter #1
I have the Escort 8500 radar detector, and have it set so I can keep an eye on the voltage while it keeps an eye out for the locals with radar. I also have the Honda volt meter on the right side of the fairing.

The situation is that the Escort reads 14.6 +/- while the Honda meter reads about a volt less 13.6 +/- while riding. Which one should I rely on more?

Mike
 

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I'm reminded of the old saying:
"A man with a clock always knows what time it is. A man with two clocks is never sure."
Under the circumstances, I'd believe the digital voltmeter that's part of your radar detector. Given the inaccuracy of the Honda speedometer, I wouldn't trust the voltmeter to be dead accurate either.
 

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Volt meter

I really wouldn't worry unless it drop below 12 volts. Meter are best used as trend monitors anyway. In two hundred thousand miles of wing riding I've only needed that information one time. Tom
 

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Discussion Starter #4
I appreciate the replies.

I should have added that I wasn't really concerned about this, just that there was a discrepency, and wasn't sure which one may be correct. But hey, it's only one volt, no problems, still enjoying the rides! :biker:

Mike
 

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I would have a tendency to believe the digital readout. Especially since the analog readout could be read from different angles and give you different results.

I would ordinarily trust the one that has the best connections and as close to the battery as possible.
 

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richard h said:
I would have a tendency to believe the digital readout. Especially since the analog readout could be read from different angles and give you different results.

I would ordinarily trust the one that has the best connections and as close to the battery as possible.
I agree with Richard.
If you know someone who has a good quality digi-volt meter, you could connect it up in parrallel.

The hond meter is perhaps a D'Arsonval ( finger pointing ) type?
These rely on an internal current limiting resistor.

I don't know any E-techs who would rely on this type of meter for accuracy.
But checking it would cure the curiosity
 

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Great White Wing said:
They both could be right for what/where they are measuring from.

I would USE the one that is connected closest to the battery.
That is a true and correct assumption. Both volt meters need to be connected to a power source of known voltage to test thier accuracy and to compare readings between the two.
 

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Get a power supply that's calibrated with standards traceable to NIS (national institute of standards) then apply the appropriate voltage to check the accuracy. If there are no adjustment on the meter you will have to make a correcton chart. If you get a power supply with an analog meter remember the greatest accuracy is always in the top half closest to full scale.

LAW
 

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In my electronic "book-learnin'"...I always thought a 12v charging system was designed to charge at 13.8v. :|
 

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One of my jobs in a previous life was to spec out NIST calibration equipment.

Our HP sales man used to say

A digital meter with an advertised tolerance of 3% is probably close to the truth.

A meter with an advertised tolerance of 2% has probably got its fingers crossed behind its back.

And a meter that advertises 1% is BSing you!!

Have fun, no matter what the doin :lol:
 

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You need a tie-breaker from a good quality volt meter.
You can check around the bike and determine if the voltage monitor location is the culpret as well.
I don't get worried if I see the voltage rise to 13.2 to 14.5 while the engine is running. The trends are important.
 
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