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Speedo damping?

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Arch stanton:
Hello.
I have a 750f1 speedo apart for refurb, but it has no damping.
What substance should i use & where do i put it?
Obviously i dont want a bouncy needle on a rebuilt speedo.
I already have clock needles like windscreen wipers on my T500. Most annoying.
So your help would be appreciated.
Sean.

Skoti:
Try contacting this Guy for advice:

https://www.cb750faces.com/cb750faces.nl/en/content/7-gauge-restoration-services

Arch stanton:
Thank you for your willingness to respond.
I have taken your advice.
Sean.

AshimotoK0:
Never done a F1 only K0&K1 but you need 30,000cst silicone oil like this in the link below. Some people recommend higher viscosity but this worked fine for me. There will be a little pot underneath the top bridge below the needle, which will need refilling. On the 750K0/K1, I drilled this with a 2mm sharp drill bit and filled through the hole, from side top and then sealed it with aluminium filled epoxy. This meant that I didn't have to remove the top bridge, which is staked over and a bit tricky to remove. I used a small syringe fitted with a tiny bootlace ferrure that electricians use, which created a short injection needle.

https://www.ebay.co.uk/itm/Core-RC-100-Pure-Silicone-Oil-For-Diff-shocks-All-Grades-In-Stock-100-300-000/141159428673?ssPageName=STRK%3AMEBIDX%3AIT&var=440235905561&_trksid=p2057872.m2749.l2649

Select 30,000 cst

Arch stanton:
Hello Ash.
I have looked at a few old threads on this subject.
There appears to be quite a difference between the K1 & F1
Speedo's in the damping pot dept.
The F1 has Very small bullet shaped pot that looks more like some sort of weight than anything else.
I cant think how the damping works.
There is no sign of a seal or joint.
I would post a pic but im a bit of a Dunce in the IT dept.
Sean.

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