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Standard clocks

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brian 450
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Standard clocks

#1 PostAuthor: brian 450 » Sun Sep 22, 2019 9:00 am

Hi, not been on here for a while. The Z has not really been ridden for the past 3 years. I am going to get it back to working this winter. What I want to know is how is the best way of fitting standard clocks with a modern wheel that has no speedo drive. Is there a digital conversion available ?

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Re: Standard clocks

#2 PostAuthor: Swirl » Sun Sep 22, 2019 12:43 pm

Good question following with interested

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Re: Standard clocks

#3 PostAuthor: Ginger Bear » Mon Sep 23, 2019 5:27 am

Brian, it seems mechanical to electronic conversion is easy, but not so much the other way round as you need to do. Might be worth having a word with these chaps..........

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Re: Standard clocks

#4 PostAuthor: Charlie » Mon Sep 23, 2019 4:23 pm

You actually have two problems there, and both are a nightmare.

One is getting a feed from a speedo sensor which would either mount and feed from the gearbox sprocket which you would need to cobble together probably from another model, or maybe use a magnet and sensor type arrangement on a wheel, but they look a mess and are inaccurate too.

Secondly you will need a converter to go from electrical to mechanical ...they are available in the car world and run around the 300 quid mark, but they all tend to use car style speedo cables, so again you have a big problem to overcome as it wont fit your speedo.

Examples here https://www.speedhut.com/Speedbox.html in the spares section, but there are plenty of similar if you Google them

If you dont/cant go that route, you are left with either finding a wheel with a speedo drive that fits whatever forks you have fitted, or machining a speedo drive into a wheel hub that you already have

The cheapest and easiest way is to just use a GPS speedo. That keeps you legal at least. After that, I would look for a wheel with a speedo drive. Depending on what size wheel you want, there are plenty of donors that will do that.

Me - I would (did) find a wheel with a speedo drive on it. It makes life easier.

What size front wheel are you wanting ?
Why do I persist in debating with idiots ? I really should know better :)

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Re: Standard clocks

#5 PostAuthor: ADRIAN H » Mon Sep 23, 2019 7:40 pm

I have bought the two gauges below - which will fit within the original clock cover and mechanical speedo / tacho housing (with a bit of work to the housing). I have not got around to finishing them and fitting them yet, as I just have been extremely busy with work / elderly parents / grand children.

Tacho - https://www.digital-speedos.co.uk/gauge ... lable-p607

Speedo - https://www.digital-speedos.co.uk/gauge ... meter-p606

I also have a speedo sensor that plugs into the original speedo drive from here - in accesories page http://www.smithsspeedos.co.uk/
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