Yeah counting them is what I do with a gear plan / map which goes along with my braking markers etc. I find them a useful backup tool so you don't downshift into first when you really wanted second. Question is, are they allowed?

I cant see any reason why acu or dd rules would prevent you from using one but personally if youve got time to look at one then youre not going fast enough!:)

I dunno, on a DD bike you get loads of time to look down and straights..not like youre arriving at 160mph

The Rules are written to try and prevent people gaining a performance advantage by spending money on certain go faster bolts ons.

As I can't see a gear indicator improving the performance of the bike then I'm happy to allow them in, especially as some of the Tachos that can be used such as Koso can come with it built in and therefore go unnoticed

Thank you for the clarifaction Kev.