Topic: Daytona Velona Gauges

[rockthehellout]

I've had this dual digital Tach/Speedo on my CB750 for about a year now. The tach, being tied directly to the coil, is extremely precise. The speedo, having an analog to digital converter, has always been a bit spotty on accuracy. I finally decided to try and dive into it tonight and see if I couldn't sharpen up the accuracy. I found a couple of connections that looked like that had separated a bit, so I rewired both, fired it up and...all of the sudden the speed was flying to 250 MPH...while I was in neutral in the garage.

First and foremost, does anyone have any experience in calibrating these gauges? I've lost the one page manual, and the one that will show up with a quick google search is for a needle gauge, not the one I'm using.

Secondly, and more just out of curiosity and wanting to problem solve, how on earth would the gauge be reading random speeds while at a stand still? Speed pulse wire? Bad ground? Or maybe the 12V is getting surges through it of some kind?

[evanphi]

Analog to digital converter connected to your original speedo drive?

Check the link in my sig for setting it up correctly... on undamaged wiring.

Have you tried emailing Daytona to see if they'll tell you how to recalibrate or even send you a manual?

[rockthehellout]

Analog to digital converter connected to your original speedo drive?

Check the link in my sig for setting it up correctly... on undamaged wiring.

Have you tried emailing Daytona to see if they'll tell you how to recalibrate or even send you a manual?

Yes and, yes. They continue to send the manual for the needle gauges. The one I'm using is attached, and yes with the digital converter attached to the original speedo drive. I'll scan through the link now, thanks!

[rockthehellout]

Analog to digital converter connected to your original speedo drive?

Check the link in my sig for setting it up correctly... on undamaged wiring.

Have you tried emailing Daytona to see if they'll tell you how to recalibrate or even send you a manual?

Yes and, yes. They continue to send the manual for the needle gauges. The one I'm using is attached, and yes with the digital converter attached to the original speedo drive. I'll scan through the link now, thanks!

Unfortunately there isn't a manual input option on these gauges for circumference etc. There's an Auto Calibrate, which is taking the PPR on a mile long run (which isn't working, as the gauge is shooting up in MPH it's getting an incorrect reading of distance travelled, etc.) and a manual option which involves setting the gauge as you're traveling 40MPH. I might try the later this evening, just doesn't seem like it's going to be very accurate, nor safe.

[rockthehellout]

Any Japanese translators that can decode this to see if there's any calibration instructions?

[evanphi]

WOW I can't believe there is no manual input... seems unsafe to do the "press buttons while riding" thing.

[rockthehellout]

Unfortunately there isn't a manual input option on these gauges for circumference etc. There's an Auto Calibrate, which is taking the PPR on a mile long run (which isn't working, as the gauge is shooting up in MPH it's getting an incorrect reading of distance travelled, etc.) and a manual option which involves setting the gauge as you're traveling 40MPH. I might try the later this evening, just doesn't seem like it's going to be very accurate, nor safe.

Can you not use this instruction set to finagle your way to a setup screen for Speed calibration?
http://daytona-global.com/products/pdf/84787.pdf

Yeah that's what I was doing last night which brought me here haha. I'll keep playing with it and hopefully be able to post a resolution.

[rockthehellout]

Thought I'd go ahead and post this in the event someone else ever purchases this gauge and needs the document. The rep from Daytona in Japan finally sent it over.

[evanphi]

RIght on! There's the manual setup switch.

Did you get it all figured out with the speed calibration?

[rockthehellout]

RIght on! There's the manual setup switch.

Did you get it all figured out with the speed calibration?

Yeah, ironically I found the manual setup switch later that night. Like I had said I had this on the bike for about a year, and the first auto calibration was...mediocre, so I had never even clicked through enough to see the manual input. (should have!)

The problem I was having is the gauge autocalibrated while not moving presumably while I was trying to figure out which buttons sequence I needed to use to calibrate it, ironically...so it was telling itself that at zero pulses it was going as fast as possible. Once I managed to work it back down to a zero baseline (which literally involved recalibrating about 25 times, slowly increasing the pulses/decreasing the speed it read) it was an easy auto calibration. HOWEVER, when I turned the bike off and came back to go out for a ride the MPH was shooting all over the place again. As I was riding it slowly worked its way back to normal.

It's still giving me a couple of fits, but I'm learning the auto calibration on this gauge is kind of an ongoing program.

[Ellz10]

I've had this dual digital Tach/Speedo on my CB750 for about a year now. The tach, being tied directly to the coil, is extremely precise. The speedo, having an analog to digital converter, has always been a bit spotty on accuracy. I finally decided to try and dive into it tonight and see if I couldn't sharpen up the accuracy. I found a couple of connections that looked like that had separated a bit, so I rewired both, fired it up and...all of the sudden the speed was flying to 250 MPH...while I was in neutral in the garage.

First and foremost, does anyone have any experience in calibrating these gauges? I've lost the one page manual, and the one that will show up with a quick google search is for a needle gauge, not the one I'm using.

Secondly, and more just out of curiosity and wanting to problem solve, how on earth would the gauge be reading random speeds while at a stand still? Speed pulse wire? Bad ground? Or maybe the 12V is getting surges through it of some kind?

I wish this guy was still an active member on here, because I'd really like to know how he went about successfully connecting the pulse cable to the ignition coils for the tachometer. Anyone have any knowledge regarding this?