[SP-1] Changing speedo from Km/h to MPH? - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 15 (permalink) Old 09-21-2015, 06:05 AM Thread Starter
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Question [SP-1] Changing speedo from Km/h to MPH?

Hey guys.

Not been here for a LONG while. The Beast has spent most of the last 2 years under a cover. Since I returned to the UK from Holland I simply haven't been able to afford to 'convert' her to UK Road Legal.

Now she's up for sale and I need to find out how much of a pain it will be for a buyer to do what I can't.

The one thing I do know needs changed is, here the speedo must read in MPH, not Km/h.

To me, it would make sense for there just to be either a software switch or a wee DIP switch to do the change, as the whole unit is digital anyway.

Does anyone out there know if this is the case? (And if so, how to do it?)

Thanks in advance

Aslan K Freeman

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post #2 of 15 (permalink) Old 09-21-2015, 10:10 AM
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The speedometer is selectable between MPH and KPH.
Here's a link to the owners manual and service manuals, both N.American and UK.

Free RC51 Service Manual Download Honda
RVT1000R RC51.info
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post #3 of 15 (permalink) Old 09-27-2015, 06:09 PM
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The speedometer displays both ‘‘mph’’ and ‘‘km/h.’’ Push and hold the multi-function select and reset button ( ) to select ‘‘mph’’ or ‘‘km/h.’’
This function only operates while the display is in the ‘‘ODO’’ mode

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This is what the manual said.
Although it also said US only, I haven't tried it on my bike.

But I believe I will give it a go.
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post #4 of 15 (permalink) Old 09-27-2015, 06:12 PM
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Not all speedometers are switchable. Only certain jurisdictions.
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post #5 of 15 (permalink) Old 09-27-2015, 06:48 PM
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Out of curiosity. I tried. I am stuck on Kph.
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post #6 of 15 (permalink) Old 09-28-2015, 07:51 AM Thread Starter
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Yeah, it doesn't work on mine either

My thinking is still that there must be a way to do it, it's all software - well, firmware - not mechanical after all.

The dude who's thinking about buying it says a new MPH unit is over £900!!!!

Anyone got any more ideas of how to solve this?
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post #7 of 15 (permalink) Old 09-28-2015, 11:00 AM
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Buy a US speedo used.
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post #8 of 15 (permalink) Old 02-24-2016, 05:44 AM
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Currently, I'm able to program speedo eprom memory. I can also set the millage for after crash replaced cluster.
I am looking for some insert file from kmh version to reprogram my current mph version. I looking for file * .hex or *.bin
I can give my mph version *.hex file.
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post #9 of 15 (permalink) Old 07-29-2017, 10:00 AM
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Hi Kizior,

Have you managed to finish the reflash process? I have and SP1 and SP2 (both KMH) that I wish to convert to MPH next year, if you have been successful perhaps you would be willing to share the process?
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post #10 of 15 (permalink) Old 07-31-2017, 02:50 AM
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Quote:
Originally Posted by longclose View Post
Hi Kizior,

Have you managed to finish the reflash process? I have and SP1 and SP2 (both KMH) that I wish to convert to MPH next year, if you have been successful perhaps you would be willing to share the process?
Yes I've reflash my speedo. I've MPH version and I had to set the right millage. I'm almost sure that same memory chip stores MPH/KMH version marker. But I didn't get KMH version memory instert so It would be nice to get some. I've got your e-mail and have answered.
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