Instruments rebuild

[Bird]

I had to take a trip to NY and figured I would just stop by Keystone in Penn. to drop my instruments off.
I met Dave (former owner? before EPA shut him down and forced him to move because of the radion crap at old shop), and I got a big bonus when he was looking at my big Tach and I was telling him I wanted it for a cont. eng and not the Lycoming and he was telling me it was gonna cost a bunch to switch around-he then tells me my tach is already a cont. tach. So for those of you who want to know how to tell and this is really stupid unless 1 person tells you, is just to look at the face- if the Tach is calibrated like a regular speedometer (Low speed on left high on right) then that is for the Lycoming. the cont. eng is exactly the other way and the needle starts on the right side. And make sure you never let a cub owner see the 90* angle on the back side for the cable-they seem to just disappear fast lol.

[Hank Jarrett]

Re: Instruments rebuild

There are some of those 90* fittings floating around in the Tribe. They are getting hard to find, but they are out there and can be used to reverse the rotation of the cable to the tach. There was originally TWO of them on my 41 so there would be more room between the firewall and engine rear case.
Hank

[Bird]

Re: Instruments rebuild

Hank, there must be 2 or more 90* fittings. The one that came with my project looked kinda like a 90* copper pipe fitting-nice radius type and that can't be reversed and then the type pictured here that can be reversed but would require some delicate machinging to match up with the back of the tach.

[M Jones]

Re: Instruments rebuild

The first that you described is original to the back of the tach I believe. That's the same as on my '39 and others I've looked at anyway. The one in your picture is a later part. I bought one from WagAero and attached it to the back of my engine case to take some strain off the tach cable. Since adding that one 10 years ago, I haven't had to replace a cable anyway.