SAE-8 Banjo Fitting Autocad

[notamustang]

</font><font color="blue" class="small">( I'll try to remember to take pictures of the lathe work as I go. Might be interesting to some who've not run a lathe. They're fun to use, but my only resistance is that these will take a lot of tool setups and time, which I don't have that much of, but trying to buy them has taken a lot of time too. )</font>

Ok you baited the hook now you have to take pics /forums/images/graemlins/smile.gif Actually if you could that would be a fun process to see. If not its understandable too. /forums/images/graemlins/grin.gif
Steven

 

[tomrscott]

Dummy,

Actually, it is Yanmar who has them custom built for John Deere. I found out this morning that Yanmar-branded tractors use banjos, but they are metric, mostly 22mm.

May yet find a source for some metric ones.

re: "one piece or two"

I will make them in one piece. Pics of the process will follow... /forums/images/graemlins/smirk.gif

 

[tomrscott]

Wow! You sure got better service than I did from their 800 number on the flyer! I don't know what office I was talking with, but the guy was not exceptionally helpful. He never did call back like he said he would.

Hummmm, $13 is much better, still would like to get some additional dimensions, I wonder what the lead time would be like? I'd still be willing to be they are getting them from India. I've got a guy checking some scrap inventory he has from grey market Yanmars which might turn up something too.

I think I will at least fab one on the lathe, to get one with two tubing ports on it, 90 degrees apart. If you look at the attached picture, near the middle there is a banjo and then below it there is another which has tubing routed almost straight down from it. That is the "return to tank" line. If I replaced that fittin with one that had another port oriented 90 degrees (to the right as you look at the picture) I could TEE in the new valve's return line very conveniently.

Once I get to making them, I may just go ahead and make more. Depends on how much work it is I guess. /forums/images/graemlins/smirk.gif

 

[tomrscott]

So here's the first profile cut for one of the braze sleeves. This will be a two port banjo with one port at a right angle to another, so this sleeve has to be off-center. A four jaw chuck is crucial for projects like this as you can see.

 

[tomrscott]

Here's another shot of the setup.

 

[tomrscott]

And here's a shot of the old lathe. Its not pretty, but hey, it does cut steel!

/forums/images/graemlins/smirk.gif

 

[PineRidge]

Tom looks like you're doing a fine job on your banjo fitting so far.

Your lathe looks like an old South Bend like I used to have but what is this in the picture?

You can expect a visit from the Inspector real soon. /forums/images/graemlins/wink.gif

Whenever I have a boo-boo like that I airbrush it out of the picture so he doesn't see it......

 

[MadReferee]

</font><font color="blue" class="small">( And here's a shot of the old lathe. Its not pretty, but hey, it does cut steel!)</font>

Almost looks like my Southbend Model 9A with the QC gearbox although mine has the factory stand with motor underneath, chip pan and drawers on the side.

 

[tomrscott]

Pineridge,

You get the PRIZE!

I wondered who would notice that.

Yesterday was the first that I had been able to get the lathe hooked up and running since we moved it here with my Dad's stuff. It has been sitting there getting dusty and -- very sadly -- a little rusty in places due to Oregon dampness and some mice that found a way into a bench drawer full of chucks and tools. I spent hours and hours cleaning and oiling it getting some new work lights over it, and wiring it up. Unfortunately I cannot find the wiring cover for the motor since the movers disconnected it. The reversing wires for the motor hang over the edge of the bench and the movers didn't want to worry about cutting them, so they cut them (???). I would have thought the movers would have had the good sense to put the motor's wiring cover and screws in the drawer of the lathe bench, but I can't find them. If they don't show up, I'll have to fabricate one.

Anyway, I had to look at the wire colors of the cut ends and figure out which was which, requiring some educated guessing since the wires they attached to were two white and black pairs. When I put those wire nuts on, I wasn't sure it was going to be right, but it spun right up and even the direction was correct. I just couldn't resist getting started on that banjo.

That brings up another topic that I guess I will move over to the projects forum: Keeping a pole barn dry enough that your tools don't get rusty. I will go kick that off in a minute.

PS: Oh the prize? It's that feeling of smug your wearing! <grin> As the Bible says, you already got your reward.

 

[tomrscott]

It is labeled Sears Craftsman. But it may well be a South Bend, I know Sears private labeled a lot of things like that. I will look a little closer at the labels and see if there are any other clues.

It came with tons of gears and cutting bits and chucks and other stuff. There is not much that I can't do with it.

Dad mostly used it for aluminum for hobby astronomical telescopes that he hardly ever used but enjoyed building. Now his eyesight and manual dexterity is so poor that he can neither use the lathe safely, or see anything through the telescope. He's 87 and having a real hard time adjusting to the limits of age. He also fabricated some parts for electronics, coil forms, and other stuff. He was also a radio systems engineer and ham radio hobbyist.

I don't think he cut steel very often with it, but it does the job just fine, you do have to keep the feed rate / cut depth under control so it doesn't get loaded up too much.

Cheers! /forums/images/graemlins/smile.gif