Electrical Problem - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 15 (permalink) Old 07-16-2014, 12:11 PM Thread Starter
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Electrical Problem

I started my RC after a stop I made on a ride last Saturday and it hesitated like it wasn't going to start but went ahead and fired up like I expected it to. As I pulled away I noticed that the speedometer had been reset to the odometer. I had it set to the trip meter. When changed it back to the trip meter, I saw that it had been reset back to zero, but it functioned fine. This is the second time I've had the speedo reset by itself.

I have a fresh battery and I've checked the terminals and they are tight. Has anyone experienced anything like this? I'm wanting to take a trip soon and this makes me nervous.

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post #2 of 15 (permalink) Old 07-16-2014, 12:17 PM
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That only happens when the battery is about to shit itself. Just because it is new does not mean it is healthy and all cells are working.
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post #3 of 15 (permalink) Old 07-16-2014, 12:19 PM
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Mine has reset several times in it's life and slow cranks on occasion but always starts and behaves like a HONDA

Makes me nervous too.

F.W.I.W. my battery is a no-name 8 year-old tiny thing I got from heavyzee back on speedzilla when I did the relocate mod in 2006

Last edited by wingnutt; 07-16-2014 at 01:00 PM.
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post #4 of 15 (permalink) Old 07-16-2014, 03:01 PM
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my bike (2000 model) has done this from new, never failed to start; yuasa battery, Li Po, all the same, with or without pc11, i pulled the starter motor and checked the brushes ten years ago, they were fine, i have put up with it ever since.
If you leave the throttle alone it is less of a problem, but since i have no (choke) fast idle cable on mine i generally crack the throttle and suffer the slow cranking speed and resetting the dash
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post #5 of 15 (permalink) Old 07-16-2014, 04:41 PM
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Originally Posted by wingnutt View Post
Mine has reset several times in it's life and slow cranks on occasion but always starts and behaves like a HONDA

Makes me nervous too.

F.W.I.W. my battery is a no-name 8 year-old tiny thing I got from heavyzee back on speedzilla when I did the relocate mod in 2006
That sounds like it has barely enough cold cranking amps to spin the engine.
The voltage level drops to where the ECU may start hickupping.

A higher capacity battery may be needed for your locale, especially when the weather gets cooler this fall.

That's the main reason why I went with the 18 Ah Shorai vs. 12 Ah model.
The weight was irrelevant (still super light), but I wanted those extra cranking amps for those two big pistons when the weather gets cool.
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post #6 of 15 (permalink) Old 07-16-2014, 04:48 PM
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^ Same here, bigger battery, Yuasa 14H. Never once had my speedo/odo reset like that, or any other issues like OP described.

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post #7 of 15 (permalink) Old 07-16-2014, 09:54 PM
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Electrical Problem

My ZX14 did the same thing when the battery was about to die or take a shit lol. Take it back and change it out. As LDH said it doesn't matter that it's new it's probably buggered. It happens a lot I've noticed and nobody wants to blame a new battery at first.


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post #8 of 15 (permalink) Old 07-17-2014, 09:54 AM
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That sounds like it has barely enough cold cranking amps to spin the engine.
The voltage level drops to where the ECU may start hickupping.

A higher capacity battery may be needed for your locale, especially when the weather gets cooler this fall.

That's the main reason why I went with the 18 Ah Shorai vs. 12 Ah model.
The weight was irrelevant (still super light), but I wanted those extra cranking amps for those two big pistons when the weather gets cool.
Sub, there was not anything but the little yuasa or mil spec abc cells 8 years back and they were a hit or miss depending who built them and if the were real or counterfeit some dude named Jason got sued for marketing his brand and there's a big thread someplace about it.

So about my set-up I have never lost a map or had a no start condition and paid like $150.00 for the whole shebang bracket cables and all 20,000 miles and 8 years ago used.

And now that I think about it since I installed my oh so sik Dr. Carbon headlight filler it hasn't happened.

FIX ON FAIL and who knows by then there may be watch batteries with 500 CCA
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post #9 of 15 (permalink) Old 07-17-2014, 09:59 AM
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On another related note BRAND LOYALTY IS GETTING MORE AND MORE VAGUE EVERY DAY

FROM CHINESE SNAP-ON POCKETKNIVES TO FAKE GM BRAKE ROTORS TO TRUSTED YUASA BATTERIES
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post #10 of 15 (permalink) Old 07-17-2014, 10:37 AM
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Originally Posted by wingnutt View Post
On another related note BRAND LOYALTY IS GETTING MORE AND MORE VAGUE EVERY DAY

FROM CHINESE SNAP-ON POCKETKNIVES TO FAKE GM BRAKE ROTORS TO TRUSTED YUASA BATTERIES

Yes....Craftsman finally sold out to the Chinese too. Damn hard to find a quality USA made hand tool these days.

Good thing is, I have a lot of the hand tools I will every need and many duplicates.

Big question is, if I ever take a broken USA Craftsman tool into Sear or now K-Mart, will they try to replace with the Chinese shit? That will be an excellent argument.

Back to your regularly scheduled thread.....



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