MG-Cars.info

Welcome to our Site for MG, Triumph and Austin-Healey Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG TD TF 1500 - Turn Signal Attaching Nut Size

Any of yinz guys know what the thread size is supposed to be for the large nut that holds the turn signal switch in place on the dash? The bake-a-light threads have stripped and I am trying to come up with options.

Thanks.

Safety? Fast?

Scott Ashworth - '54 TF
S. R. Ashworth

That's two of us then!
Dave H
Dave Hill

I gave up on my turn signal switch after a long battle with worn threads, failing internal leather cup, erratic behavior etc, etc, when an internal tab broke and could not be repaired. I now use a $5 Ace hardware 3 way switch and it does fine. You might consider just epoxying it in place, once the threads are stripped I don't think there is much else that can be done.
Actually, one of my projects is a smart switch with an internal compass cip which will self-cancel based on time and/or the end of a turn process. May take a while to get it built though :)
Geoffrey M Baker

My plan was to coat the damaged thread with epoxy, then recut the thread with a die. But first need to know the thread size. It appears to be about 24 tpi and around 19mm, but this does not correspond with a BSF or Whitworth thread. Maybe UNEF!
Dave H
Dave Hill

I was thinking that I could turn down the bake-a-light threads and then super-glue a threaded metal sleeve in their place. I can guess at the thread size but since it has to fit the knurled nut, I thought somebody might know the official size for the die I would need to locate.

As I write that down, I realize that the flats top and bottom will make the process more challenging.

I, too, have thought that fitting a switch inside the canister which was activated by the original lever would be slick. I like your idea, Geoffrey of a self-cancelling switch. If you come up with a electronic diagram, please share.

Take care,

Safety? Fast?
Scott Ashworth - '54 TF
S. R. Ashworth

It may be easier to get another knurled nut and make a cut through the threads to essentially make it into a die. It would mean kinda destroying a good knurled nut, but might be easier.

.... CR
C.R. Tyrell

Actually, you've given me an idea. Coat the threads with epoxy, allow to part set, then cut the thread with the nut before the epoxy sets hard. The main issue being to apply enough epoxy, but not too much. Not that it has to be perfect to be an improvement - just a few patches may be enough.
Dave H
Dave Hill

"Actually, you've given me an idea. Coat the threads with epoxy, allow to part set, then cut the thread with the nut before the epoxy sets hard. The main issue being to apply enough epoxy, but not too much. Not that it has to be perfect to be an improvement - just a few patches may be enough."
This is exactly what I did on my TF. I coated the nut with patrolium jelly first. It worked well.
David
D. Sander

Ok thanks - that seems a viable solution then.
Dave H
Dave Hill

All,

I am bringing this thread back to life because, in my spares I have found a good used outer cylinder for the turn signal switch. I am willing to part with it on an exchange basis for a set of glovebox lid chrome strips for my TD, in any restorable condition. If anybody is interested conntact me off line at "john dot scragg at wanadoo dot fr"
Needless to say, I will pay any difference in value

John
J Scragg

Be careful of applying too much torque to the threaded spigot it will part company from the rest of the mechanism. "Ask me I know".
G Evans

This thread was discussed between 20/04/2015 and 27/04/2015

MG TD TF 1500 index

This thread is from the archives. Join the live MG TD TF 1500 BBS now