Ty 350 Speedo Operation

[wasmeneh]

I am getting my newly acquired TY 350 up to speed and have an issue with the fork mounted speedo. I checked the owners/service manual and there's no real information about the sppedo listed in it.

1st the speedo itelf works... I disconeceted the cable from the wheel fitting and turned the cable with a drill and it functions fine.

2nd when I spin the front wheel with the cable attached the cable doesn't move, so I guess the cable drive in the front wheel isn't working.

Anybody know of a fix, or how to get to the part? Anybody know where to find the part?

Thanks in advance

Mike

[kevin j]

see if the tabs in the drive engage the wheel. they may be bent from assembling the wheel in the wrong location.

where are you located?

I may have an extra one, have several speedos and don't use any of them. I just need the drive as as a spacer on the axle.

kcj

[wasmeneh]

see if the tabs in the drive engage the wheel. they may be bent from assembling the wheel in the wrong location.

where are you located?

I may have an extra one, have several speedos and don't use any of them. I just need the drive as as a spacer on the axle.

kcj

Kevin,

The my TY is not where I'm emailing the board from. I'll check tomarrow but I dont recall any provisions for tabs? It looked like the speedo cable went into the fitting and everything was internal. Do I need to take the wheel off to see the tabs?

Located in Wilmington, NC.

Thanks

Mike

[kevin j]

yes, if I recall correctly it's been a while since I have had my wheel off. Don't ride it too much any more. It's the one I have converted to GG front disc brakes, and I need the speedo drive in there as a spacer.

I think there are two milled slots on the wheel hub. Two tabs on a sheet metal part inside the speedo drive engage the slots. On other models, if the tabs are not in the slots, and axle is tightened up, the tabs bend back flatter. Then they don't reach into the slots when the wheel is put on correctly. I think its true of the Ty also.

The tabs turn a large gear, sort of, or metal piece with teeth cut on it. That turns the speedo drive the cable plugs into. Basically a worm gear drive, like a car steering box, in reverse: the big gear is the input, the small worm is the output.

Sometimes the drive tangs shear off or the teeth strip out if the cable seizes or puts to much resistance

take it apart and it will likely be obvious what is wrong.

Edited May 18, 2007 by kevin j

[wasmeneh]

Kevin,

After getting the right tool, 12mm allen wrench, I got the front axel out. You were right there were 3 tabs that were bent back by the front wheel tabs. I was able to pry them back straight and reassemble the front wheel correctly. Now the speedo works and I am a happy camper.

Thanks for the help.

Mike[

uote name=kevin j' date='May 18 2007, 05:40 PM' post='125371]

yes, if I recall correctly it's been a while since I have had my wheel off. Don't ride it too much any more. It's the one I have converted to GG front disc brakes, and I need the speedo drive in there as a spacer.

I think there are two milled slots on the wheel hub. Two tabs on a sheet metal part inside the speedo drive engage the slots. On other models, if the tabs are not in the slots, and axle is tightened up, the tabs bend back flatter. Then they don't reach into the slots when the wheel is put on correctly. I think its true of the Ty also.

The tabs turn a large gear, sort of, or metal piece with teeth cut on it. That turns the speedo drive the cable plugs into. Basically a worm gear drive, like a car steering box, in reverse: the big gear is the input, the small worm is the output.

Sometimes the drive tangs shear off or the teeth strip out if the cable seizes or puts to much resistance

take it apart and it will likely be obvious what is wrong.