Spring on the L Speed Regulation Arm

[Sherazhyder]

Hello ! Sometime back our fellow member Inigo explained here the correct method of setting the spring on the L shaped speed regulation arm of 32 No. Motor. Recently, i changed the governor on my machine. During the process, the spring on the L shape arm got loose and I have not been able to fix it. May I request you to please guide me as how to adjust the spring on the arm. I will appreciate if you could share the pictures demonstrating the method.
Regards
Sheraz

[Sherazhyder]

Hello ! Sometime back our fellow member Inigo explained here the correct method of setting the spring on the L shaped speed regulation arm of 32 No. Motor. Recently, i changed the governor on my machine. During the process, the spring on the L shape arm got loose and I have not been able to fix it. May I request you to please guide me as how to adjust the spring on the arm. I will appreciate if you could share the pictures demonstrating the method.
Regards
Sheraz

Since I did not receive any response, I thought I might have not been able to properly phrase my question. So I put the question again to this Forum with a little detail. My motor is No. 32. I recently changed the governor and during the process i messed up with settings of the little spring wrapped around the L shaped arm link, which is moved back and forth to regulate the speed.

Now there is no tension in the arm link (I did not notice if it had any tension earlier). As of now, the upper and lower end of the spring are properly wound over the arm link. The upper end is closer to the leather pad and the lower end goes a little beyond the bend. But none of the ends are tied to anything. Visibly, there is no hole or screw for holding either of the two spring ends. I trust at least one end of this spring is to be tied to something (e.g. motor’s body or the block) but I don’t know where.

I hope you understand the issue now. I might be completely wrong in understanding the function of this spring. Whatever is the case, you may like to guide me to properly finish this job. Thank you and best regards

Sheraz

[Inigo]

Hello. It would be great to see photos of your problematic motor... It seems by your explanations that your spring is faulty, or misplaced. It should have an end hook in one end, and a short straight prong in the other. The spring goes as you say, by the bend and the long straight arm. The curved hook takes the short arm, and the short straight prong engages on a lug protruding from the motor frame, so the spring, acting by simple torsion, forces the short vertical syn with the leather pad against the governor disc.

[Sherazhyder]

Hello. It would be great to see photos of your problematic motor... .

Hi Inigo ! Thank you very much for your detailed response and the pictures. The coil spring on the L shape arm is in good shape. I will try to fix the proble following your recommended course and then get back.

Best regards
Sheraz

[Sherazhyder]

Hello. The curved hook takes the short arm, and the short straight prong engages on a lug protruding from the motor frame, so the spring, acting by simple torsion, forces the short vertical syn with the leather pad against the governor disc.

Hi Inigo !! Finally, I was able to very easily fix the problem fully adhering to your advice. The tension is back to the L shaped arm. Thanks a million for helping me out. The environment of cordiality, support and knowledge sharing is the beauty of this group.

Before I conclude this discussion, may I ask Inigo and other fellow Members about (i) some tips on optimally aligning the governor worm with the brass worm wheel on the spindle, and whether any play is allowable in adjusting the governor between the two keepers (bearings)? I feel that the governor generates noise because of this play.

Best regards
Sheraz

[Inigo]

Another long and detailed explanation is required here. I cannot do it just now, but later in the day it will be possible... Be patient.

[JerryVan]

Sheraz,

There should be very minimal end play between the two shaft bearings and the governor shaft. Really, as little as possible, but with no binding whatsoever.

[Sherazhyder]

Another long and detailed explanation is required here. I cannot do it just now, but later in the day it will be possible... Be patient.

At your convenience please. Looking forward to hearing from you.

Regards
Sheraz

[Sherazhyder]

Sheraz,

There should be very minimal end play between the two shaft bearings and the governor shaft. Really, as little as possible, but with no binding whatsoever.

Hi Jerry ! Noted. Thank you

Regards
Sheraz

[Inigo]

Here I am.
I've touched several hmv and Victor motors of the same type, so maybe yours has the features I'm explaining or it has not. Just answer my questions and we'll proceed from there.
Governor: The two brass bearings at both ends do have a slot in the middle? Only one of them? The two of them? None? If there is one with the slot, it should be placed at the worm end of the governor axis.
Spindle and its brass gear that goes to the governor worm gear: when you loosen the set screw of that gear so you can slide it along the spindle, do you see a round notch? If yours has this feature, it is intended to fix the position of the gear in the spindle, as the notch is for the set screw to set into it) so this should not be modified.
These devices make fix the position of the brass gear on the spindle, and that of the governor axis on the motor frame.
The adjustment of the governor axis end play must be done then by fixing the fixed end bearing first with the set screw, then the opposite bearing, with screw loosened, must be pressed against the axis so there is no side play along the axis, and while in this position, just retract this bearing a little bit, and then fix the set screw. The governor axis must be left with a very tiny end play along the axis when you move it, just a click.
The governor disk, band springs and weights, and the small collar at the other end, are a complete set fixed with six screws, one at each end of the band springs, three on the disc plate neck and three on the small collar at the opposite end. Here there is a fourth screw, smaller than the other three, and this is a set screw that fixes the position of the complete set on the governor axis. This screw also has a fixed position, for there is a round notch in the governor axis to take the set screw.
If your motor is modern and has all these notches and slots, the only possible adjustment is that of the governor end play, to let it rotate freely, and the adjustable speed control screw, or lever, if any. As I remember, also the L arm with the leather pad has a fixed position, because the connector with two screws in it which connects the short L arm and the long speed control lever, also has notches to set the screws into them, as I remember. All is done to be automatically adjusted in a fixed position, fool proof.
If the lenght of the band springs or the weights in the governor have been changed and are not the usual standard, the motor will run at a different speed than designed, and to readjust it you'll need to jump over all these position controls, setting the things differently.
Also, there is no possible adjustment for the meshing of the spindle brass gear on the governor worm, unless you move the things ignoring the set screw notch and fix the gear in another position.
If you have any doubts, just ask and I'll try to explain better. I have the motors enclosed in their machines, but one nº32 motor of my HMV127 gramophone needs spring regreasing, so I'll have to disassemble it soon, and I can take photos to illustrate all this.