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Transmission band lining question.

Posted: Sun Nov 10, 2019 11:03 am
by AndreFordT
Last week I started the rebuild of an English 1912 engine.
I can't identify the band linig that is on the transmission bands.
Maybe someone out there can help me?
Where can I find this lining?

The lining is not wood or kevlar but looks like usual brake lining.

I saw this kind of lining about ten years before on an unknown 1926 engine. See photos watch also how smooth the drums are.
First photo are the drums of the 1912 engine.

Andre
Belgium

Re: Transmission band lining question.

Posted: Sun Nov 10, 2019 11:27 am
by RajoRacer
It appears to be a "hard" lining that was used back in the "70's - similar to forklift brake material although it has a weave design like the newer repro Scandinavia type liming - can you poke an ice pick or similar pointed tool easily into it ?

Re: Transmission band lining question.

Posted: Sun Nov 10, 2019 3:23 pm
by Kerry
Looks like the hard lining that is used in the turning brakes in bull dozers.

Re: Transmission band lining question.

Posted: Sun Nov 10, 2019 4:20 pm
by modeltbarn
It looks like the 'hydromatic' hard lining we used in the late 60s-early 70s. I don't know if I spelled that correctly, but it sounds correct.

Re: Transmission band lining question.

Posted: Sun Nov 10, 2019 4:58 pm
by Wayne Sheldon
All of the above. It was favored by many before the days of Kevlar, due to its long lasting and the ability to be abused by drivers that didn't want to learn how to handle soft cotton linings.
There are two problems common to such linings. One, they tend to wear the drums a bit much. The lining being harder, tends to wear the soft cast iron drums.
Two, look very closely, maybe wash the oil out with some solvent. Many but not all such hard linings also had tiny brass wires woven into the lining. These helped with both strength, and grip on the braking surface. They also eventually wear or work out of the lining and can cause several different problems. The wires, being brass, can get into the magneto, or timer, and short out part of the ignition system. They can also get into the Babbitt bearings. The crankshaft, being harder steel than the drums may not be harmed by the wires, but that point is debatable. I had a block years ago that had wires embedded in the Babbitt. I don't remember what I did with it (I think I traded it to someone that wanted to do a full new bearings rebuild?). It might have worked okay if I had used it? But I really didn't like the way the bearings looked.
These hard linings are excellent for outside brake bands (like AC brakes). That is what they are intended for.

Just to be clear. Several longtime active model T'ers used such linings for many thousands of miles with no known problems from them. Some of those people also had distributors on their cars. And I did clean out the timer for a friend that had them when it shorted out.

Re: Transmission band lining question.

Posted: Sun Nov 10, 2019 5:29 pm
by DickC
Most people focus on kevlar as the preferred band replacement. I was that way also until I tried wood. I am very pleased with the wood linings as they don't seem to have the worries associated with kevlar, are chatter free (maybe a little going into reverse), and require little if any adjustment after the first adjustment. Just my .02. Dick C.

Re: Transmission band lining question.

Posted: Sun Nov 10, 2019 6:25 pm
by dykker5502
That transmission is not a 1912 transmission, but a 1926-1927.

Re: Transmission band lining question.

Posted: Sun Nov 10, 2019 6:47 pm
by Wayne Sheldon
Michael D, I imagine the first photo is of the 1912 transmission, the second is likely the "unknown" 1926 transmission he mentions. But good to point it out for the benefit of less knowledgeable readers.

Always happy to see your posts! Did I see your name on the Lang's calendar list again?