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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">I know this is not the best method but it worked and no mechanical labor was involved. I used a 12 channel Garmin GPS and found a straight, level, section of highway approximately
6 miles long. With all 12 satellites accessed I used a red Sharpie and made a small mark next to the speedometer number I was testing accuracy for. I backed that up by being followed by a friend with a new Toyota Tundra which has an accurate speedometer. It
was too much fun and now I know with a reasonably acceptable degree of precision what my true speed is.
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<div>Randall Reihing</div>
<div>1960 TR3A<br>
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<div id="divRpF99064" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> Triumphs [triumphs-bounces@autox.team.net] on behalf of Rye Livingston [ryel@mac.com]<br>
<b>Sent:</b> Thursday, February 02, 2017 9:30 PM<br>
<b>To:</b> Tim Gaines<br>
<b>Cc:</b> Triumphs<br>
<b>Subject:</b> Re: [TR] HVDA 5-speed in TR6--speedo gear<br>
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<div>Oh yeah, that's right, 1/100th of a mile, or <span style="color:#545454; font-family:arial,sans-serif; font-size:small">52 feet, 9.8 inches.</span></div>
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On Feb 02, 2017, at 03:13 PM, Tim Gaines <mtgaines@presby.edu> wrote:<br>
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<div class="_stretch"><span class="body-text-content">Thanks Rye. I was pretty sure that the speed and odometer readings were from the same gearing. The measures you described for recalibrating the speedometer are pretty much exactly what Herman van den Akker
recommends in the manual for his conversion kit except that the distance he prescribed for the push was 1/100 mile. I'm starting to think I will be doing that measure too, but I think I will try an online Toyota forum along with the Triumph Experience forum
and this list I've already contacted. Maybe something will turn up in a few days.<br>
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My aversion to messing around behind the dash comes from some scraped fingers, a couple of dash lights that failed to work after my last excursion there, and a really big mistake. A couple of years ago my temperature gauge started reading very high. I did everything
I could think of to avoid buying a new radiator: different thermostats, thorough flushing of the engine water channels, check of the water pump, etc. Finally, having exhausted all other fixes, I bought a new radiator. After installation . . . . . . temperature
readings were still high! After an appeal to this list, someone suggested that maybe I had a loose ground connection behind the dash. Sure enough, the ground wire that serves the instruments was loose where it fit on the speedometer mount. After tightening,
normal temp readings. Sheesh.<br>
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Tim<br>
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----- Original Message -----<br>
From: "Rye Livingston" <ryel@mac.com><br>
To: "Tim Gaines" <mtgaines@presby.edu><br>
Cc: "Geo Hahn" <ahwahneetr@gmail.com>, "Triumphs" <triumphs@autox.team.net><br>
Sent: Thursday, February 2, 2017 5:23:21 PM<br>
Subject: Re: [TR] HVDA 5-speed in TR6--speedo gear<br>
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Your odometer would be off as it's all run by the same gear in the speedometer. <br>
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I understand you don't want to get behind the dash and take out the gauge. For my TR3 I was having Palo Alto Speedometer rebuild mine along with the tach. I'm running Panasport wheels with 205/60 15, which is smaller than stock, so I had them calibrate my speedometer.
Per their instructions I marked out x number of feet, I think it was 90 feet and a few inches, down in the street. I then attached a paper clip to the end of the speedometer cable and pushed the car the distance and counted the number of revolutions. I did
it 3-4 times. They took that number and put in the proper gear in the speedometer and now it matches my GPS when I'm zooming down the freeway.
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Good luck, <br>
Rye<br>
PH: 530-FIND-RYE <br>
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