Topic: Speedometer trip meter knob screw kaput

[whizzer]

CB350F speedometer trip meter knob screw was rusted and phillips slots crumbled.  so head was drilled off. I think this is common. Coming up with a replacement is hard to imagine. Small, long, fine threads.

Besides glue what can i use to hold the knob on the shaft?

[edwardmorris]

CB350F speedometer trip meeter knob screw was rusted and phillips slots crumbled.  so head was drilled off. I think this is common. Coming up with a replacement is hard to imagine. Small, long, fine threads.

Besides glue what can i use to hold the knob on the shaft?

See if you can find a replacement here

http://www.motogrid.com/pages/OemParts?aribrand=HOM

[whizzer]

I'll try to find a very small generic metric machine screw. Will post size that works.

[Schnell]

I was thinking about using a twist on electrical home wire connector. Or the type with a set screw.

Then I got a used replacement part from a friend. Thanks Reid!

[seanbarney41]

I was thinking about using a twist on electrical home wire connector. Or the type with a set screw.

Then I got a used replacement part from a friend. Thanks Reid!

I had the same idea, but could never find one that fit...finally ended up finding a smashed up speedo at a swap meet for cheap and stripped it for parts...

[whizzer]

screw size M2-.04 4mm works, it could be longer I think, like 6mm or maybe 8mm.  Went to hobby shop and got several that did not work.  these came from Amazon for about $4.  now can fit 99 more gauge knobs. 

[Supermex01]

I used a table lamp switch knob
You can get them at home depot in all kinds of shapes and colors
They work wonders

[whizzer]

M2-0.4 4mm is too short.  Knob hole depth is 3 mm-4mm and shaft hole is 8 mm so screw can be no more than 12mm.  Ordering 8mm since that is what's available on amazon. 100 count for $3.30.  Should work with locktight.

The lamp knob idea is a good one.

[Nic]

I went to return my trip meter to zero after filling up today and the bastard knob is gone. CB750 faces  has em for $19.50 plus shipping, in Oz money that's $35, I bought it 

[whizzer]

M2-0.4 8mm worked well.