SOHC.co.uk Forums > CB750
Gauge Repair
DaveB:
Very scary. Sounds like I should use a plain brown paper bag? :)
RGP750:
Well we did 8)
BigAl (Alan):
Job for a specialist, especially the damper fluid...I'm no expert, but I'm sure someone will point you in the right direction.
I re-faced a couple of clocks a few years ago, made a timber jig (as image) which helped with the removal & re-fit of the locking ring.
Alan
kent400:
Fair to say the bands on the larger gauges are not too easy to fold back, the gauge needs to be clamped to compress the rubber seals to get the band edge above the base flange and to ensure the body isn't loose on the base. A drill press with a piece of 6mm round stock in the chuck is utilized, the gauge is simply revolved and pressed back to the base flange. A very reasonable appearance on the underside can be achieved but this can't be seen when fitted. The wood block is made of several pieces of MAF glued together, this protects the top edge of the band and the paint finish on the body.
It's a bit of a task forming the wood block but it might be possible to use a piece of plastic drain pipe that the gauge will drop into up to the band if the pipe is marginally too big a cut along the length and closed up with a couple of hose clips might work. I've not tried that and only thought about the possibility have made about 4 blocks to suite various size gauges over the years.
AshimotoK0:
--- Quote from: kent400 on April 05, 2017, 10:48:05 AM ---Fair to say the bands on the larger gauges are not too easy to fold back, the gauge needs to be clamped to compress the rubber seals to get the band edge above the base flange and to ensure the body isn't loose on the base. A drill press with a piece of 6mm round stock in the chuck is utilized, the gauge is simply revolved and pressed back to the base flange. A very reasonable appearance on the underside can be achieved but this can't be seen when fitted. The wood block is made of several pieces of MAF glued together, this protects the top edge of the band and the paint finish on the body.
It's a bit of a task forming the wood block but it might be possible to use a piece of plastic drain pipe that the gauge will drop into up to the band if the pipe is marginally too big a cut along the length and closed up with a couple of hose clips might work. I've not tried that and only thought about the possibility have made about 4 blocks to suite various size gauges over the years.
--- End quote ---
I am making up something similar for the CB72/77/Bomber/JDM CB250K0, that have combined speedo/tacho in an oval enclosure . Once I get the outline on CAD I am going to have a piece of plastic milled out to suite. What do you do on those old 1960's 'clocks' Peter? Any hints & tips?
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