small digital tach recommendations

[sbaugz]

has anyone had any luck using an electronic tach on their vintage suzuki two strokes? (To clarify, my bike is a GT185)


The one I am looking at uses a small pickup lead that you wrap around the plug wire several times. Has anyone used one? Does it work?

Here is the one I was thinking of using: This particular model allows you to select between 0.5, 1, 2, and 4 pulses per revolution. Which setting would I use on a two stroke twin?

https://www.trailtech.net/tto-1

[Zunspec4]

Hi sbaugz,

If you are fitting it to a T500 with points & coil each HT lead will get a pulse every 360 degrees. if you attach your sensor lead to just one HT lead you will get 1 pulse/rev. If it's a GT500 set-up. with the common HT coil, each HT will get a pulse every 180 degrees (wasted spark), if you attach your sensor lead to just one HT lead you will get 2 pulses/rev.

Cheers Geoff

[sbaugz]

Hi sbaugz,

If you are fitting it to a T500 with points & coil each HT lead will get a pulse every 360 degrees. if you attach your sensor lead to just one HT lead you will get 1 pulse/rev. If it's a GT500 set-up. with the common HT coil, each HT will get a pulse every 180 degrees (wasted spark), if you attach your sensor lead to just one HT lead you will get 2 pulses/rev.

Cheers Geoff

Thanks Geoff. I guess I should have clarified which bike. Its a GT185. Do you happen to know how many pulses per revolution this would be?

[Zunspec4]

Hi sbaugz,

For the GT185 I'm afraid not. If it's twin points & coil it will be 1 pulse/rev from a single HT lead.

Cheers Geoff

[sbaugz]

It’s twin points and twin coils. So one plug wire should be one pulse per revolution?

[dollydog]

you could always fit a kr1s coil or cbr600 coil, or even wire the 2 coils together like i sometimes do with my electronic ignition conversion. the kr1s and cbr600 coils are one coil into 2 ht leads and are wasted spark, as the 2 coils would be when wired together. would this set up work? love doing electrics, but electronics baffle me
cheers, dd.

[sbaugz]

an update. I heard back directly from tech support at Trail Tech. They said this will not work properly on a points ignition type motorcycle. They said there will be too much interference. So I guess I will have to stick with a mechanical tach or possibly a digital one from motogadget/

[daxman]

an update. I heard back directly from tech support at Trail Tech. They said this will not work properly on a points ignition type motorcycle. They said there will be too much interference. So I guess I will have to stick with a mechanical tach or possibly a digital one from motogadget/

Or update points to hall-effect system maybe. I imagine they exist for the GT range..

[sbaugz]

an update. I heard back directly from tech support at Trail Tech. They said this will not work properly on a points ignition type motorcycle. They said there will be too much interference. So I guess I will have to stick with a mechanical tach or possibly a digital one from motogadget/

Or update points to hall-effect system maybe. I imagine they exist for the GT range..

I have looked- not for the GT185 bikes because they have that goofy all-in-one starter/ charger/ points system.

[daxman]

an update. I heard back directly from tech support at Trail Tech. They said this will not work properly on a points ignition type motorcycle. They said there will be too much interference. So I guess I will have to stick with a mechanical tach or possibly a digital one from motogadget/

Or update points to hall-effect system maybe. I imagine they exist for the GT range..

I have looked- not for the GT185 bikes because they have that goofy all-in-one starter/ charger/ points system.

Aha - like my old Yam 200 from the early 80s..