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Author Topic: Tachometer  (Read 399 times)

eda1bulletc5

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Tachometer
« on: October 04, 2013, 09:04:56 PM »
Hi Guys!
This topic might have already been discussed - sorry to bring it up again...

I have a dual fire electronic tach (Analog faceplate). The UCE ignition is Single fire. There are single fire tach adapters that can be used for Twin cylinders - which should have 2 ignition coil (right?)

In our RE, it seems like we have 1 ignition coil. The single fire adapter that connects to coil has wires for coil#1 and coil#2. In this case, considering RE has 1 ignition coil, can both coil#1 and coil#2 be connected to the same ignition coil negative?

Will this show the proper RPM?

Also essentially these adapter are 2 diodes with parallel resistors across each - allowing current to flow only in one direction.
http://www.gadgetjq.com/single_fire_tach_adapter.gif

Please let me know if any inputs...

Thanks,
Sajiv
2011 RE C5
2012 Honda NC700X 6-speed

tooseevee

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Re: Tachometer
« Reply #1 on: October 07, 2013, 07:05:29 PM »
Hi Guys!
This topic might have already been discussed - sorry to bring it up again...

I have a dual fire electronic tach (Analog faceplate). The UCE ignition is Single fire. There are single fire tach adapters that can be used for Twin cylinders - which should have 2 ignition coil (right?)

In our RE, it seems like we have 1 ignition coil. The single fire adapter that connects to coil has wires for coil#1 and coil#2. In this case, considering RE has 1 ignition coil, can both coil#1 and coil#2 be connected to the same ignition coil negative?

Will this show the proper RPM?

Please let me know if any inputs...

Thanks,
Sajiv

           I don't think the UCE is what I would call single fire.

            I believe the UCE fires the plug on both Power stroke & Exhaust stroke. That is not single fire.

             A single fire ignition system fires only on the power stroke & on my harley would require 2 coils & a whole lotta other money  ;)  ;)

             Here's what I would try with your tach: I would hook up the 12V wire, start the bike & touch ONE of the tach's coil wires to the Enfield's coil & see what happens. Whatever happens will tell you what to do next. I'll make a S.W.A.G that the tach will work.

              But godknows, I've been wrong before. That's how I've learned so much from my mistakes.
2008 ACE Head AVL Classic
1977 Shovelhead Hardtail Bobber

Mr.Mazza

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Re: Tachometer
« Reply #2 on: October 10, 2013, 04:00:59 AM »
I know there is modern looking tachs, but has anyonre found a good looking 50s style?
Lizzy - 07 500 Deluxe ES - Red and chrome