Manky Monkey Motors

Can anyone explain, in simple terms, how one of the after-market ones of these work? And if they're any good?

Clive

There's a magnet on the front wheel and a pick up on the forks which sends a pulse to the speedo which inturn calculates the speed, you have to programme the circumference of the front wheel in it's quite simple.

I recommend the Sigma ones maybe a bit dearer but will last longer than the cheap bicycle ones.

I have used a Sigma from Hein Gerike for the last 2 years only had one speeding fine so must work ok

Cheers buddy,

How does the magnet attach to the wheel, and surely if you put the circumference of the wheel in, it'll not matter how big the wheel is, but where along the radius of the 'circle' the magnet is fitted? Or am I being a biff here?

Clive

I used Araldite resin an put it on the rim but it don't matter where you put it it's just a counter provided you programme the unit with your wheels circumference accurately all will be well.

A bit of inventing to mount the sensor but it's nothing you cant handle.

You can buy "cordless" ones too, though their range is only a couple of feet -I tried one on a chop & the distance from front wheel to yoke mounted speedo was too far!

HI I HAD A CHEAP ONE OUT OF HAFORDS FITTED TO MY KITCAR PASSED SVA NO PROB SAME BATTERY 2 YEARS ON

Also the coils can interfere with the signal.

Does SVA require the speedo to be illuminated?

not got a book but sure i read it some where that must be illuminated.but almost sure they have to be

I think so but never had mine checked

Yes thy do mine was light up by a mounted micra number plate light

I got a vapor one for xmas.It is backlit.The pick up magnet is a special replacement bolt for the  brake disc to hub. You then calibrate it as per the instructions.It has a rev counter ,trip meter ,etc etc all built in .

I wanted one of them but a bit too much out of my pocket money!

yes i recomend the trailtek vapour does all you want and more,
easy to use and view , tried and tested,
regards Phill

These look pretty good.

http://acewell.co.uk/

They have a good range here to.http://www.digitalspeedos.co.uk/

didnt it make your neck ache, looking around the back at the number plate area to see your speedo ;D ;D ::)

YES but when i looked i was told to Wined my neck in

Thank you for the links to these things...I am planning on fitting one to my chop in the very near future...Voodoo....

put a acewell on my last trike , superb piece of kit , easy to set up to!