I have a 1914 Touring which has a non-starter transmission (later than a 1914) and an aluminum transmission cover. The cover is currently off so I could inspect the bands and try to stop significant oil leaks.
When I removed the cover, I found the later than 1914 non-starter transmission and bands with removable ears. The low speed pedal shaft (3427) and the low speed adjusting screw (3419) are both the style listed for use with non-removable ear bands. The low speed adjusting screw is damaged on the end that engages with the pedal shaft.
What is the reason for the change in the design of the low speed pedal shaft and the adjusting screw for use with bands with removable ears? Should I change the pedal shaft and adjusting screw to the later style (3427B and 3419B)? Are there any problems in using the later style pedal shaft, adjusting screw, and bands with the 1914 aluminum cover?
I tried to search for answers in previous threads but must not be using the proper search words. Any help is appreciated.
The original design up until removable ears was introduced had a long axle on the low speed shaft that goes into the adjusting screw that has a hole for the shaft. The later design has a shorter low speed shaft so you can remove the band without lifting the hogshead and a solid adjusting screw with a short stub ending with the same dimension as the low speed shaft that holds the spring in place.
You can shorten the low speed shaft 2-1/2" with a hacksaw and put a later adjusting screw in place - or maybe glue a piece of the sawed off piece into the old adjuster with epoxi so it looks like the newer design.
But if you plan to use Kevlar or wood and doesn't drive very much every year, maybe you can keep the old low speed axle parts - IMHO it's not an easy job to reline the bands through the inspection plate with an aluminum hogshead - it's so tight in there so maybe you won't gain many minutes over a full hogshead lift - and an alu hogshead isn't all that heavy.
(Message edited by Roger K on October 16, 2014)
I converted all of my early cars except my '10 to use quick change bands. It was easy enough to do and it sure beats having to pull the hogs head. My '10 has the small square opening in the hogs head so quick change bands won't work. That said, with Kevlar linings I have had the same bands in my '10 for over 15 years so if you go with Kevlar and drive reasonably pulling the hogs head is not the periodic maintenance requirement it used to be with cotton bands.
It's easier on the early cars to use the bands that came with the car when new. Those covers were not designed to use late style bands.