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| jdlmodelt |
 Jan 6 2013, 10:57 PM
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#1
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James D. Lane  Group: Members Posts: 345 Joined: 30-November 12 From: Colorado Member No.: 15,210 Region Association: Southwest Region  |
What drives the tachometer in the 72 914?
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| r3dplanet |
Jan 6 2013, 11:37 PM
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#2
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Senior Member Group: Members Posts: 679 Joined: 3-September 05 From: Portland, Oregon Member No.: 4,741 Region Association: None |
Elves.
It's actually just a simple gear inside the transmission that rotates a cable. Old school. -m. QUOTE(jdlmodelt @ Jan 6 2013, 08:57 PM)  What drives the tachometer in the 72 914? |
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| messix |
Jan 7 2013, 12:00 AM
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#3
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AKA "CLUTCH KILLER"! Group: Members Posts: 6,995 Joined: 14-April 05 From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada Member No.: 3,931 Region Association: Pacific Northwest |
QUOTE(r3dplanet @ Jan 6 2013, 09:37 PM) Elves. It's actually just a simple gear inside the transmission that rotates a cable. Old school. -m. QUOTE(jdlmodelt @ Jan 6 2013, 08:57 PM) What drives the tachometer in the 72 914? (IMG:style_emoticons/default/slap.gif) fail!! it's driven off the points side of the coil |
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| jdlmodelt |
Jan 7 2013, 07:26 AM
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#4
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James D. Lane Group: Members Posts: 345 Joined: 30-November 12 From: Colorado Member No.: 15,210 Region Association: Southwest Region |
QUOTE(messix @ Jan 6 2013, 11:00 PM) QUOTE(r3dplanet @ Jan 6 2013, 09:37 PM) Elves. It's actually just a simple gear inside the transmission that rotates a cable. Old school. -m. QUOTE(jdlmodelt @ Jan 6 2013, 08:57 PM) What drives the tachometer in the 72 914? (IMG:style_emoticons/default/slap.gif) fail!! it's driven off the points side of the coil I have a wire there that I have not connected yet. So you are saying it connects to the negative side of the coil? That's the side I have the points connected to. It makes a very small spark when I touch it to the negative side of the coil. Back when I was trying to get the engine running, when I connected that wire it kept the engine from firing. So I've left it disconnected? |
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| Dave_Darling |
Jan 7 2013, 10:13 AM
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#5
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914 Idiot Group: Members Posts: 15,161 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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QUOTE(jdlmodelt @ Jan 7 2013, 05:26 AM) I have a wire there that I have not connected yet. So you are saying it connects to the negative side of the coil? That's the side I have the points connected to. It makes a very small spark when I touch it to the negative side of the coil. Back when I was trying to get the engine running, when I connected that wire it kept the engine from firing. So I've left it disconnected? Should be a black wire with a purple stripe. Make sure that it's the same wire that connects to the back of the tach, and that it's on the right plug back there. If it is the same wire (the "continuity tester" function on your multimeter will help show that, or the ohmmeter function) and it's plugged into the right place, and it isn't shorted to ground somewhere, then your tach is hosed. And yes, it's supposed to connect to the same side of the coil as the points wire. --DD |
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| jdlmodelt |
Jan 7 2013, 10:22 AM
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#6
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James D. Lane Group: Members Posts: 345 Joined: 30-November 12 From: Colorado Member No.: 15,210 Region Association: Southwest Region |
QUOTE(Dave_Darling @ Jan 7 2013, 09:13 AM) QUOTE(jdlmodelt @ Jan 7 2013, 05:26 AM) I have a wire there that I have not connected yet. So you are saying it connects to the negative side of the coil? That's the side I have the points connected to. It makes a very small spark when I touch it to the negative side of the coil. Back when I was trying to get the engine running, when I connected that wire it kept the engine from firing. So I've left it disconnected? Should be a black wire with a purple stripe. Make sure that it's the same wire that connects to the back of the tach, and that it's on the right plug back there. If it is the same wire (the "continuity tester" function on your multimeter will help show that, or the ohmmeter function) and it's plugged into the right place, and it isn't shorted to ground somewhere, then your tach is hosed. And yes, it's supposed to connect to the same side of the coil as the points wire. --DD Thanks DD! That was the most clear and concise instructions I have received to-date! I can do that. So...what is the "right" connector on the back of the Tach? |
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Posts in this topic
jdlmodelt tachometer Jan 6 2013, 10:57 PM
mittelmotor
Elves.
It's actually just a simple gear insi... Jan 6 2013, 11:52 PM r3dplanet Oh right. My mistake. I was thinking of the odomet... Jan 7 2013, 01:39 AM
Chris H.
Oh right. My mistake. I was thinking of the odome... Jan 7 2013, 07:30 AM Cap'n Krusty I forget the numbers, but you can look at the nice... Jan 7 2013, 11:01 AM jdlmodelt
I forget the numbers, but you can look at the nic... Jan 7 2013, 11:15 AM jdlmodelt i swapped the brown grounds to the terminal labell... Jan 7 2013, 08:23 PM cwpeden Tach wire goes from the neg. side of the coil to t... Jan 7 2013, 10:18 PM |
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