Speedo repair

[Curtis]

Has anyone had any experience with repairing speedos?? Mine has the usual jumping around needle.
Thanks!

[GD66]

That can be as simple as giving the cable a decent lube, or checking that the little square on the cable end isn't rounded off where it feeds into the speedo.

Of course, it won't be....

[Curtis]

Drive is good, cable is good. Its in the speedo unit.

[Hoony]

there was a place in sydney (or Melb ?) i think that specialised in this. i cannot remember the name.

check on some old pommy bike forums who they use.

[Natroy]

Try Attspeed Auto Instruments in St Mary's. (02) 9833 0055.

[LWC82PE]

http://ottoinstruments.com.au/

[Mudnut]

I’ve fixed a few over the years, the jumping around is the usually speed cup jamming up ( a magnet in an alloy housing) , the hardest part is getting the actual speedo to bits . Removing the trip counter knob is another issue. They are usually a L/H thread and a pain to undo. Once apart they are pretty basic, I’ve found a good clean of the dust out of the speed cup via compressed air and some light oil on the drive usually fixes them.

Hope some help

MD

[Curtis]

yes well thats the problem getting it apart?? It seems to be pressed together.

[Matador107]

I cheated on one I did. Put a 4 inch hose clamp around speedo and filed the underside of the crimped chrome retaining ring. The clamp prevented file marks.Cleaned inside then silicone on the chrome retaining ring , all good.

[pokey]

yes well thats the problem getting it apart?? It seems to be pressed together.

correct, some are pressed some are glued and some are even melted togther. all depends on the Brand.

Jap ones from the 70s are assembled with a solvent that melts the plastic and leaves no residue but they can often be split with a very carefully executed hacksaw blade on the seam as the melt isnt usually complete.

Mudnut is on the money as first the trip knob needs to be removed and again it depends on what breed  as to how it comes off. Euro are usually metal cased and after the trip meter is removed its a fairly easy process to remove the cover.
 metal case rings are crimped the metal is very soft so go gently.

 after a good clean and a drop of lube you can reassemble with a good glue and a a wipe of black silicone to hide your scar and make it almost invisible.