creating a new cluster speedo background and calibrating

[a_ahmed]

Hey guys,

So, I've got a spare broken speedo that I've got to play with. I disassembled it and wanted to figure out a number of things. I know where the pot for calibrating the speedo is located, I also know the resistor mod to make the thing even 399km/hr capable (useless but none the less...)

Now I scanned in the speedo backdrop, prepped it so I can make my own but I have a curious dilemma.

I may sound as a noob but I honestly don't know. On some car's speedos the distance between the ticks is not consistent between the initial 0-10 and the rest. As I observed the stock 0-180km speedo, the 10km incremenets are all consistent and the thick bold jumps are 20km increments, all that is equidistant except the initial 0-10 which is small.

I've noticed on the euro 0-240, the nismo 0-260 and the tomei 0-280 that the 0-10 is tiny and almost inexistant. Now I could just guesswork and make the distnace between 0-10 tiny and then do the rest equidistantly (not an issue).

However this inital 0-10 is a prob for me... I am sounding completely noob but I don't even know why the initial 0-10 would be smaller. On some cars the 0-10 is equidistant with the subsequent 10km incremenets... but not on some cars and well in our case, yes on our cars.

I'll attach the scan of the JDM 0-180km speedo