Tachometer solutions

[nuclearbike]

My 05 M50 doesn't have a tachometer. I don't really see any threads relating to this, has anyone found a nice tach for their bike?

[Easy Rider]

Originally Posted by nuclearbike

My 05 M50 doesn't have a tachometer. I don't really see any threads relating to this,

Really??

I just did a search for "tach". It found 364 threads.

Got to be some good information in there somewhere..........unless you insist on seeing something that specifically mentions an '05 M50.

[Ray Nielsen]

Drag Specialties offers one that will work with an adapter circuit (not included). It's about $80 and comes with handlebar mounts. Since it's for a Harley with one coil it needs an adapter to handle the two coils of the M50.

The parts are cheap, and are available at Radio Shack. You'll have to fabricate your own wiring, but that's not too extensive.

I'll try to post the circuit with this reply.

Ray Nielsen, in Minneapolis and just back from Nova Scotia!

[VtWoodChuck]

This is the better model than the one I use: TinyTach T226R-2C
I mounted it on the top of the front brake reservior using velcro and a 45 degree piece of wood.

http://www.tinytach.com/tinytach/commercial.php
faster response.

An hour-meter for lawn mowers, garden tractors and a tachometer variety of small engines and generators. Run-time feature is excellent for equipment rental agencies.


Commercial Tiny-Tach™
Tachometer and hour meter for gas engines.
Can be programmed for different engines.
RPM to 19,990.
Updates every 1/2 second.
High RPM recall.
Contains tachometer, hour meter, two service timers, job timer and max RPM.
All menu controlled.
Standard wire length is 6 feet. Allow 2-3 weeks for custom orders.
Estimated battery life is 5+ years — not replaceable.
One year warranty. Click here for warranty information.
Model Description Price
CTT-II Standard Model. $65.00



An hour-meter for lawn mowers, garden tractors and a tachometer variety of small engines and generators. Run-time feature is excellent for equipment rental agencies.
Click for larger view
New Features | Installation Instructions | Operating Instructions | Commercial Home

Commercial Tiny-Tach™
Tachometer and hour meter for gas engines.
Can be programmed for different engines.
RPM to 19,990.
Updates every 1/2 second.
High RPM recall.
Contains tachometer, hour meter, two service timers, job timer and max RPM.
All menu controlled.
Standard wire length is 6 feet. Allow 2-3 weeks for custom orders.
Estimated battery life is 5+ years — not replaceable.
One year warranty. Click here for warranty information.
Model Description Price
CTT-II Standard Model.
$65.00

[nuclearbike]

thanks for the tach solutions! I have the 05 model and wasn't sure if newer models have a tach w/stock configuration. I guess the m50's didn't come with tachs. Correct me if I am wrong.

[DIN-K-DAU]

Hey Ray,
I went to Radio Shack to get the diodes and resistors and ran into confusion.
They do not have the 1n4007 diodes and wanted to know the amps on the resistor.
Did you by the parts at Radio Shack or just relaying the adaptor PDF?
I have a cheap tach I bought off of Ebay and it is for the dual fire ignition. It works, but only shows 1/2 what it should be. I have found the adaptor on Ebay for the single fire ignition, but it is about as much as i paid for the tach.
Can you or anyone help with finding the parts that I need?
Tanx,
Din-K-dau

[Ray Nielsen]

The resistors were 1/2 Watt, the diodes were rated with a Peak Inverse Voltage (PIV) rating of 1000 volts or something close as I remember.

A 1N4007 diode is similar, the high voltage rating is necessary because of an inductive kickback that can be a couple of hundred volts. Actually a 400 Volt PIV rating would probably work okay, but I went with 1000 Volts PIV rating.

Mine has been working just fine for over 7K miles now.

Ray Nielsen, in Minneapolis and just back from Nova Scotia!

[DIN-K-DAU]

Hey Ray,
Tanx
Cheers,
Din-K-dau