Tachometer drive cable

Wow. Sounds like there's not a lot of leeway for error. Too short and it's obviously a problem. Too long and I'll end up having to weave it around too much creating kinks and bends that aren't acceptable. Thanks Ron. Thirty six inches seems reasonable. If I win the tach I'm bidding on on Ebay right now, I'll order that one from Univair with option to return if it's wrong.

Chris

Mine is about 36" long. The tach is located on the far left. The cable passes through the elongated hole in the firewall, then over to the tach connection on the engine. It is just long enough. It is not long enough to pass through the center of the firewall and then weave over to the tachometer.

Thanks Ron. I run a string or something to simulate the cable for a better estimate.

Chris

I have the NR type in mine. I imagine it depends on which tachometer you get, mine is pretty old (maybe original?). Regarding length, you will need to know where on the Instrument panel is your tach installed, and where will the cable passes through the fire wall. Then stretch a wire (no tight bends) from the tach to the take-off on the engine, following the path the cable will follow. Measure that and get the next longer cable. The tachometer take off is part of the oil screen housing, between the magnetos. 24" inches seems short, I don't think that even gets you from the instrument panel to the firewall. I can get a rough measurement on mine tomorrow.

Ron

My 415C (ser # 508) had an electronic tach that senses off the magnetos installed many years before I bought it earlier this year. I hate it and want to install an old fashioned analog dial-type tachometer again. The instrument is fairly easy to find but I'm not sure which drive cable to get. Univair lists several, all applicable for Ercoupes (and others), and all of different lengths, some up to 96". I can't imagine mine would be more than 24" judging by the looks of it but really don't have any idea which one to get. Does anyone know how long the Teleflex drive cable should be?

Chris
Sioux Falls, SD