New Carrier Spockets

J Henry · #1 17-09-13, 01:57

Hello all,

I am in the process of reproducing carrier sprockets for my own carrier but am curious if there is a greater need to make more for fellow carrier owners.

What would be a reasonable price to charge for a set?

Could we run into problems with new sprockets and worn track sets?

Looking for your thoughts fella's/Gal's

rob love · #2 17-09-13, 02:23

Yes, new sprockets and old track will be a problem. Depending on the wear of the track, the old track will hang up, especially in reverse, on the sprockets. I would compare it with trying to drive #60 chain with a #50 sprocket.

Lynn Eades · #3 17-09-13, 13:43

I am led to believe that a set of tracks will require 2 to 3 sets of sprockets.
This is from a guy who worked them hard, making a living with them post war.
I recall new track will hang up for some time until it is run in.

Hans Mulder · #4 17-09-13, 20:39

I could be interested in a pair of spare sprockets. I have the T16 axle on my carrier, but I believe the sprockets are essentially the same.

J Henry · #5 18-09-13, 03:59

Will keep you guys posted, I have the first set being made as we speak and will test them out and give a review on how they perform, but considering how wore out most tracks are I would think new sprockets would work with limited catching up and would probably mate to the old tracks quickly. I know the tracks stretch and the distance between links varies but the loose tolerances of the tracks I think will work them selves out with new sprockets?

Michael R. · #6 07-12-13, 05:51

Jason, how did those sprockets work? Cost, fit, function?

J Henry · #7 03-03-14, 04:17

It's been a bit and we are just machining the first sprocket now and will see how it fits to a set of tracks I have then we will go from there. When I said earlier that I was having a set made as we speak, well I thought I was but there was a delay in the machining. Also working on track links??

Radek · #8 03-03-14, 11:25

Hi I would like one, as spare.

Thanks

RichardT10829 · #9 03-03-14, 12:10

are the teeth case hardened ?

Stew Robertson · #10 03-03-14, 15:03

I think if the sprockets were later cut from 4140
Plate they would work harden and would work as well as the originals there would have to be a slight taper cut on the outside edges though
That should be a the machining needed
Just my opinion again

John Mackie · #11 26-03-14, 10:47

i tried putting worn track on new sprockets , it did not work! i used the worn sprockets which worked ok. i was told that the old timers used to cut the sprockets into segments and space them out, increcing the diamater.
today it is possible to cut a sprocket with increased pitch and diamater.

Andrew Rowe · #12 26-03-14, 18:29

I have put several sets of new sprockets on track that started out new and then slowly wore out and had no problems. I have a NOS set of track on a Loyd carrier at the moment that is giving me problems , you can do several rotations of the track and then it gets out of sequence , they do say it does take a few miles to ' bed ' in. I am thinking of just putting the NOS back on the shelf and running good second hand track that is already 'bedded' in.

McDell Bros · #13 03-04-14, 11:44

Hi everyone. I had a similar problem to what Andrew has with the new track and sprockets, If you have a close look at how the pitch of the sprocket matches the track, on a new set they don,t quite match just as a worn set does not. It appears to me that they were designed to match best in a slightly worn situation which would give it an overall longer life. On our carrier (which had near new track at the time) we just kept driving it and it soon stopped trying to jump out.

Lynn Eades · #14 03-04-14, 13:31

One of the manuals (from memory) said that they are mismatched, and may be so, for up to 100 miles. One can imagine that there would be quite a bit of "stretch" in the initial running in process of the the track, and that once the pin and link load surfaces have bedded to each other, that there would be a period of dimensional stability.

(well how else would you describe it?)
From here on, it just goes down hill, so to speak

From the practical side, Does track tension make any difference?

Hans Mulder · #15 03-04-14, 20:58

I had new sprockets on my carrier when I bought it, with old track. Initially the track would ride up as it didn't mesh perfectly, but now it is fine. I have another set of NOS track, however, so ideally when it goes on, I'll need some new sprockets to go with.