pushrod tube dimensions

[teachingscience]

Folks, I need some help with dimensions. I have a styled B which needs a new pushrod tube. I have a home machine shop and want to make one if possible. Problem is I cannot seem to find any dimensions anywhere. I want to have the dimensions in advance to see if I have any material to make it from before tackling the project. If I dont have any tubing that'll work, I'll just bite the bullet and buy a new one but I would enjoy the shop time to make it from scratch. Any help would be appreciated. I can only find information on the non styled B's and my understanding is that they are not the same size.

Thank you in advance for your help.

Charlie

 

[Mark-Ia]

You could pull yours out and then have a pattern or, Just buy one from www.handjmachining.com

 

[HILL]

I made a pair of them a few years ago and the old ones are hanging on my shop wall. I will measure them tomorrow and post.

 

[HILL]

(quoted from post at 19:25:24 07/04/21) I made a pair of them a few years ago and the old ones are hanging on my shop wall. I will measure them tomorrow and post.

This is the measurements of the PR tubes that came out of my 1945 model B about 20 years ago, steel. The LG 4.165, ID .640, OD small end .725, large end .730 .
Here is how I made my PR tubes, I used 1/2 inch galvanized water pipe ( I would like to have used copper, brass, stainless steel but this is what I had) the ID was correct size no matching required. I faced each end to the correct length, I turned the OD between centers, turned each OD a couple of thousands oversized , turned the middle a couple of thousands undersized, chamfered the small end so it would start in. I tinned the machined surfaces with solder . Put a little sealer on them and pressed them in large end to the
front of tractor. Over 20 years CNC machining

 

[HFP]

HILL is spot on with the dimensions. If you were going to purchase material to make them from, 3/4 inch OD, 0.065 inch wall brass tubing would be the way to go.

 

[teachingscience]

Thank you Hill, That is exactly what I needed. I was thinking about using 1/2 brass water pipe. I knew it should be close but wanted to have
a more accurate measurement to determine if I even wanted to tackle it. Sounds like it should be a good project. Since I wont be tinning
mine, do you still suggest a couple thousand over?

Thank you and everyone else for your help. I tell all my tractor friends to check here for any question because you all have so much
experience and knowledge.

Charlie