Fitting a tachometer (rev meter/gauge)

[cicatrez]

How does one go about fitting one to a bike that doesn't have one? I would really like to fit one to my City Fly, but have no idea where to start.

[Finglonga]

Why would you need one? Just go by the sound and feel of the engine.
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[cicatrez]

I know that, but I like to have it there, just in the corner of my eye. I'm a new biker! It would help me to remember which gear I'm in etc.. and to know how low the revs need to go before it starts to labour, and which power band has the most torque etc.
I know you can do this by ear. But you know...

[Ariel Badger]

I could tell you how to fit a tacho but I am sure as hell not going to as you do not need one on most bikes let alone a ped. Learn to listen to the engine, feel how she pulls, become a biker. But you know....
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[G]

What I've seen done on CGs is to work out the red line for each gear on the speedo.
Will at least give you an idea of the gear you're in and is a guide for when to change up. While I like having a tacho, I don't find it a big problem not having one.

If you really want one, there's a variety of aftermarket electric speedos that will do it. Have a look at the Acewell unit, which is quite reasonably priced and has various other functions too. Some units even offer a gear indicator (my veypor datalogger unit does).

[chris-red]

You can get electronic ones you hook it up to the HT lead and tell the it how many cylinders you have and whqat the red line is and it should give you a bouncing LED.
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[G]

Here's some info on fitting an acewell, though the one shown with the extra indicator lights is more expensive.

[cicatrez]

those acewell ones seem rather expensive, I'd be happy with a simple analogue type tachometer like for example
https://www.rnrfabrication.com/image947.jpg

[hmmmnz]

far you guys are mean
the analogue rev counter usually has 3 or 4 wires,
1 of which is the power (switched from the acc)
1 from the coil -
1 of which is an earth
and if you have a 4th then its usually for the back light


friggin easy as pie
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[finpos]

Easy to fit an electronic one, 3 or 4 wires as stated. Good look finding a cheap one that works for a 1 cylinder engine, though, they are normally designed for cars and so can be set up to work for 4/6/8 cylinders. Prepare to pay motorcycle premiums.

f.

[iooi]