Topic: Speedo cable removal (for electronic speedo)

[Frosty]

Hi there!

The next change I plan for my bike will be to remove both the stock speedometer and tach and replace with a "Motoscope tiny" electric speedo. Now I've found out that I'm going to need a plug for the hole where the tach cable goes, but what to do about the speedo cable, or rather, the device at the front wheel where the speedo cable is going? Is that something that can just be removed or do I need some sort of plug for that one too? If so, are there plugs for it readily available?

If anybody here has ever installed one of these speedos and their sensors, I'd also be happy about posted pics that show the attachment of the magnetic sensor.

Cheers!

[Jerry Rxman Griffin aka MuthaF'er]

You may be able to use the same plug for the speedo. If you haven't had that screw out I suggest you use an impact driver as they can turn into a nightmare.

[Frosty]

Thanks for the heads-up, if that works, it'll be fine. Regarding the screw, I know what you're talking about, it was a horror show getting it out without a impact driver, and even when I removed it again (new screw this time) only a year later it sat still pretty tight although I hardly tightened it and even put some WD40 on the year before...

[calj737]

Just leave the speedo drive in place. You can run without a cable attached to it also.

I've installed many of those gauges, and I prefer to run the sensor under the left case cover reading a magnet installed on the front sprocket bolt. I do this by welding a small piece of steel on the cover, opposite the sprocket. Drill a small hole, screw the sensor through it far enthusiasm away from the sprocket to clear, but close enough to read it. I then run the speedo wiring up and with the OIL/NEUTRAL wires in a separated loom to the gauge.

[Frosty]

Wow calj737, that is genius! Any more pics would be greatly appreciated!

[trueblue]

When I installed my electronic speedo I modified a speedo drive off a VFR750.  I only had to thin it down by 100 thou.  There are details in the link in my signature. 

[calj737]

Just install the magnet on one of the sprocket bolt heads (or use a magnetic bolt, which you can find online 6mm, 1.0 threads). Depending upon which bike you have (the picture is of a 550) you may need to either fashion a mounting plate for the pickup, or you can install it on a part existing under your shift cover.

The ratio for the speedo is remarkably close to the rear sprocket when you look at provided ratios for tire sizes. I paced my bike with a car using Cruise Control, put the gauge in CONFIG mode, and dialed the RPM by hand until it matched at 20, 30, 40, 50 and finally 60MPH. Pretty easy and dead accurate.

Whenever I re-wire a bike with MotoG gauges, I always break out the OIL and NEU wires from the stator harness anyway. These get run inside a small piece of sleeving directly to the gauge since they're truly GROUND signals for indication. The Tiny has a supplied plug harness, and I just run new, smaller gauge wires to it from the bike side since these wires are really conducting low voltage and very low amp signals. This makes it much easier to crimp them into the supplied plugs. And I locate that harness plug under the tank area, well beyond the neck and use rivet nuts in the backbone for proper GROUND terminals. Easy.

I don't know if this picture helps, but its the only other one I have presently:

[rotortiller]

Plug the hole, drill the disk, glue the magnet and install the sensor. Many ways to do it.

[calj737]

The big reason I chose to place it where I did is to protect it from the elements. But anywhere concentric to the axles.

[Frosty]

Thanks both of you! That'll point me in the right direction...