Early S2 Speedo/Tacho damping needed.

Baff1960 · Post by **Baff1960** » Sun Jan 08, 2023 1:01 pm

Hi there.

Noticed that my 71 S2 NOS speedo and tacho lacking damping on longer ride outs. Any advice to fix without having to unmould the retaining lip on the plastic covers would be appreciated.

Cheers Alan

Post by **Triple Parts** » Sun Jan 08, 2023 4:30 pm

You are going to have to take it apart, you may find this useful...
viewtopic.php?t=20226

If you don't fancy it, Alan Smith does them...
viewtopic.php?t=18345
.

Baff1960 · Post by **Baff1960** » Mon Jan 23, 2023 7:08 pm

Hi Tony.

Thanks for that. Saw you article in the club mag detailing the disassembly/assembly of the plastic shrouds. I might end up going there but still mulling it over. Will chat to Alan first to pin point the damping solution.

Cheers Alan

Fast Phil · Post by **Fast Phil** » Tue Jan 24, 2023 11:25 am

Have you tried greasing the cable?

mraxl · Post by **mraxl** » Tue Jan 24, 2023 1:13 pm

The needle rides in a cavity that is filled with a grease. If that grease has seeped out, the result is rapid needle bounce.
It can only be corrected with total disassembly and cavity fill with proper grease.

Post by **Triple Parts** » Tue Jan 24, 2023 4:42 pm

Is it not damping oil Dale? I thought it is quite thin, so when you leave the clock on its side or upside down it can leak out, but I have never stripped one down that far.

.

mraxl · Post by **mraxl** » Tue Jan 24, 2023 6:27 pm

It is a grease but viscosity and amount is critical.

Post by **Triple Parts** » Tue Jan 24, 2023 9:45 pm

mraxl wrote: ↑Tue Jan 24, 2023 6:27 pm It is a grease but viscosity and amount is critical.

Learn something every day

.

David Riley · Post by **David Riley** » Wed Jan 25, 2023 10:51 am

I had a similar problem a few years ago and found a solution on another forum.
You need to get some silicone model car diff oil (30000 cst viscosity) and basically you strip down the speedo/tac and refill the damping chamber with the oil.
I thinK i used a small syringe.
Its a bit fiddly but can be done.
Must be 10 years ago and the needles are still spot on with no flutter.
Got mine on the interent from core-rc.com.
Regards
Dave.

Baff1960 · Post by **Baff1960** » Sat Jan 28, 2023 7:42 pm

Hi.

Thanks for the info. I have an old Tacho I've taken apart and that's good for a test bed so will experiment on it.

Regards Alan

Pierrot974 · Post by **Pierrot974** » Mon Jan 30, 2023 6:48 am

Hi
A friend of me use this silicone grease :

Baff1960 · Post by **Baff1960** » Sun Feb 05, 2023 11:18 am

Hi.

Had a look at my spare Tacho which has almost no damping at all. Examined what was left of the damper pot contents. Looks to be thick oil. Have acquired some CORE-RC 30000 oil which is very viscos. Will
test it soon as the weather improves.

Alan

Post by **Triple Parts** » Sun Feb 05, 2023 12:42 pm

Maybe test it with a drill?

.

Klawsuc · Post by **Klawsuc** » Sun Feb 05, 2023 6:04 pm

Run the drill in reverse. Phil

Kawasaki Triples Club

Early S2 Speedo/Tacho damping needed.

Early S2 Speedo/Tacho damping needed.

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