having a problem whit my speedometer(honda mtx)

[spliffi]

hi im having a problem whit my speedometer.it does not measure speed, just km I have run it.so bought a used instrument panel but same problem.but if I use hand drill that end of the speedo wire it measures speed.is there a special position speedometer gear shall be fitted to the inside the brake system on the rim?

[bikenut]

from memory the speedo drive unit is on the RHS of the front wheel ?

Again from memory the speedo drive unit has a worm gear that actually drives the cable, a small shaft with a slot, that the "blade" of the speedo cable fits into.

The worm is driven by a gear, which is drive by a "dog plate", which in turn is driven by the wheel hub.

The dog plate is a circular plate that had 2 external teeth which engage in 2 slots in the wheel hub.

the dog plate has 2 internal teeth that engage in 2 slots in the drive gear.

poor wheel fitting can bend the dog plate, meaning no drive.

remove the speedo cable from the drive unit, see the worn "blade", does this turn when the wheel is turned ??

if no then problem inside the drive unit.

if yes, is speedo cable broken ?

if no, then problem with the speedo instrument....... :karma:
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nuts about bikes

[mentalboy]

[Ariel Badger]

If the odometer is working the unit is getting drive, you have two routes to go. Learn how the speedo works and fiddle with it with very little screwdrivers etc. Or buy a second hand unit off Ebay.
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Bikers make great organ donors, get 115 on your licence today.

[bikenut]

hi im having a problem whit my speedometer.it does not measure speed, just km I have run it.so bought a used instrument panel but same problem.but if I use hand drill that end of the speedo wire it measures speed.is there a special position speedometer gear shall be fitted to the inside the brake system on the rim?


if no, then problem with the speedo instrument.......


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nuts about bikes

[unitynotsocri...]

Make sure the cable is fully engaged in the drive unit. Putting the bike on a centre stand and spinning the front wheel should show the cable is turning. Check this before attaching it to speedo.
Also note, the internal cable could be too short or not engaging in the clock\ speedo drive.
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[spliffi]

got speedometer to work .was just speedometer gear that was not in the right track on the rim

[bikenut]

one too many spliffi ??

anyways its fixed now, enjoy....... :karma:
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nuts about bikes