Over reading clock

[johnr]

Those unicorn clocks could well be for a GSX1400 as unicorn do a Kat body kit to fit the 1400 Kat .
Irrelevant really because the rest of you above post is a valid point.

click on the advert, if you read the wording below, it says that its an original suzuki part for a gsx400 katana (though it says catana)

[PaulD]

Well I’ve managed 30mins to look around the bike and it looks like someone has been inside them by the state of the bezel. Pics for your perusal.

[johnr]

thats a new clock face, so, im wondering if it didnt start out as a set of kmh clocks. and thy fitteed a mph front to it.

[johnr]

i notice that neither needle falls back to zero.

[fossie]

The needles are orange so replacements, not reddy orange and it has 55 mph marked , which is for US market.
So mystery seems to be solved. ( sorry Toyah.!)

[fossie]

The initial gearing is different.

[PaulD]

Ok so it appears I have a badly reconditioned American clock set? The problem still is how can I fix it or indeed can it be fixed at all?

[stockcar]

sounds more feasible someone has used an American face on a random KMH clockset without realising the internal gearing is wrong??

[Uncle Bob]

Sorry if I’m being thick here but why would an mph face give an incorrect reading?
Isn’t it just the same as an overlay?

If you look at a set of KPH clocks the 240kph mark is just about 12 o'clock.

On the MPH clocks and the replacement MPH overlay the 240kph mark is nearer 1 o'clock, and the wrong values translate all the way around, though by less as you go slower. So if you put the MPH overlay on a KPH clock you will get the wrong reading, though the indicated would slower i.e. a kph clock at 240kph (149mph) would be showing about 140mph on the MPH overlay.

Hence why I would not use one of the MPH overlays on my KPH clocks.

UB

[Uncle Bob]

All the overlays I have seen are marked up as the US or UK MPH clocks (240kph / 150mph at about 1 o'clock), not for a KPH speedo where 240kph / 150mph is at about 12 o'clock. If you put one of those overlays on a KPH clock it will read slower than you are actually going.

From what has been said it looks like the OPs clocks were possibly KPH with a new (but incorrect IMO!) MPH face added (together with new needles).

I don't understand how they could read faster though if it was a MPH face on KPH clocks. What I would do is get a Smartphone with GPS, add a Speedo App, attach to bike somehow (or use in a tank bag which is what I have done) and go for a spin to see how the GPS Speedo compares with the actual clocks. Then you'll now what the error is at least and which way.

UB