I'd like to officially file my objection and disappointment concerning the "reset" of the cutter for each pass not being accompanied by a typewriter "new line" bell sound... :D
As someone who has worked with farm equipment PTO's all my life I can tell you having the PTO a few thousandths under actually makes life so much easier during hooking and unhooking simply becaue it gives a tiny bit of clearance for dealing with all the crud that ends up in the couplers.
Tony - another beautifully-done video. Very informative, and lovely to watch. I'm amazed that you can 'crank out' so many videos, and keep the quality (and entertainment value) absolutely top-notch!
I'll wait to pass judgement until he's finished the part. I don't even think it's half as long as a proper one and is certainly missing the groove part way along it - which is presumably used on some couplings to hold them together.
Tony, your videos are educational on many levels. Big fan. One request : can you make a video on the cutting fluids: usage, types you use when and why, what's your setup is like ? how fluid cleaned ( any skimmers? ) . Looking forward to see it on your channel ! Cheers.
YOU ROCK! This Old Tony is my favorite machinist based RU-vid channel! Being a broke as wannabe farmer, this one hit home. Thank you Tony please keep up the good work. BRAVO!
Dead: exactly right . Nuts: A common and certainly apocryphal folk etymology is that the term originated from the historical poker games in the colonial west of America, where if a player bet everything he possessed, he would place the nuts of his wagon wheels on the table to ensure that, should he lose, he would be unable to flee and would have to make good on the bet. Since it would be expected that a player would only make such a bet when he had the best possible hand, the folklore says that this is how the best possible hand came to be known as the nuts.
I was thinking along the same lines, but rather than do the whole cut with a fly cutter, maybe just one more pass with a simpler one with a radius on the face just to skim a light pass at the root to accomplish the minor diameter.
Thanks for the infotaining video as always, Tony! And how serendipitous; I just broke the gears and internal spline in my electric tractor PTO gearbox. Will be a fun fix...
Thanks for the tech, Tony! Still wondering how the heck 5' long spline shafts are machined...There's more than a few otherwise great glassblowing lathes out there in the world that get written off as a loss because of spline shaft damage. Usually this happens when the new owner was an idiot and strapped the machine to a trailer by the spline. Anyhow, from what I've heard they are very difficult to source and machinists hate making them.
Let us know if it fits, breaks or drives. Interesting, most of youtube machinists make tools and stuff for there shop. Real life useful projects are quite rare even here on my favorite channel. Reminds me of my early days on citizens band radio where i figured out quickly that non pros used it exclusively to talk about there radio.
@@RMWeinberg In Germany, that was basically the only thing that was allowed for quite a while. Well .. besides of "topics, which are too mundane to justify using official communication systems" Don't want to cut the states telephone services sweet profit.
I'm a welder and have absolutely zero knowledge of machining nor do I have any plans to get into it, however I find machining videos fascinating and yours seem to be the most entertaining 👍
I don't even know what a PTO Spline is, but i want to learn either way...hahaha Thanks for all the awesome content... I always learn something while enjoying the entertaining dialog and goofy edits... have a great day, take it easy... I use to call "dead nuts" "gramppa" 😜😜
PTO in this case is " Post Traumatic Option" in which the customer got the estimate from a "real " machinist, then had Old This Tony do it for free. Lol otherwise it stands for " power take off" as in a shaft to power optional machinery from a tractor.
@@A_Man_In_His_Van Oh, right on, I watch Chucke2009, he is all into tractors(I'm a city boy, hahaha) he says that all the time, didn't even make the connection, thanks... I have a feeling TOT is a just a good ol' story teller, that loves making things, so his friends ask him 1st...
Picking up after someone elses guffaw is always tough. It usually takes more time and be better starting from scratch. From experience most of these 550 rpm drives are badly worn for sure. So all your head scratching and milling will be just fine fella.
I'm a software engineer so picking up after someone else's guffaw is a constant in life. You need to try to get into the head of what they were thinking at times and its a place you don't want to go on many occasions. You learn fast when to just throw out something and do it from scratch. Way fewer antacid tablets involved.
@ChrisHallett83 Boy tell me about it. The other pet peeve I have on that is make comments useful. Restating what the code is obviously doing is of no use. Tell me why its doing something or tell me what the goal is for non-obvious code. Just do something useful.
The nicest thing about smartphones is being able to watch TOT during conference calls. I live in fear of a surprise joke, but otherwise, makes it all better.
you forgot a very important feature, that being the locking groove that runs around the circumference. A ball bearing in the female part locks into it to prevent the shaft from sliding off and entering a low earth orbit. also on the reason for the drive groves tapering back to the od it happens for a few reasons. 1: feature of manufacturing 2:reduce stress points 3: as they are used on machinery that operate in very dirty conditions it is common for them to get covered in dirt. When the female part is installed it pushes the dirt along the grove, if the grove came to a flat face it would pack the dirt hard against it preventing it from seating fully therefor not allowing it to lock in place. The feature helps evacuate the debris
That is a possibility. It is also possible that in the intended application it is unnecessary or even intentional to allow movement in the case of a one piece shaft opposed to the commercially available 2 piece shafts. strange things happen on backyard built machines. Yes on the early shafts it was a bolt passed through a hole tangentially to the locking groove then the spring loaded pins became popular however the are prone to seizing with corrosion or debris ingress. A spring loaded collar that seats ball bearings in place (think ratchet to socket only the locking ball is in the female portion) is becoming a more popular option.
Wow, the videos coming in at a much faster rate now, I love it! Is it because you can dedicate more time to filming and editing because of the Patreon?
@@ThisOldTony I know, but when you said it I was remembering the farmer down the road that lost an arm on the PTO. I always cringe and giggle when I hear "PTO" or "HiLift Jack". Really enjoy your videos.
That looks exactly the same as every spline I’ve ever seen in my career as a mechanic. I’ve never seen one with the curved depression between the splines, although 99% of what I’ve dealt with is metric. Nice job!
Great video! I was contemplating though......would it be cheaper and faster (albeit less fun) to take a 540 rpm to 1000 rpm adapter and cut the 1000 rpm end off? In doing so, you would be left with a perfect 540 rpm splined shaft that could be attached to whatever it would be needed attached to.
@@RambozoClown, I didn't know that. Thanks for bringing that to my attention. In light of the new information, you are correct. "ToT to the rescue"! 🙂👍
@@duanelundgren7985 N series haven't been produced since the 1950s. I don't think that there is enough of them kicking around to justify a company producing an adapter for it.
@@TestTubeGub-GubSnailman 1952 was the last N. There are thousands still in use. Farm stores and Tractor Supply still sell PTOs and adaptor to current sizes.
It's before my time, but as I recall the old Ford size was 1 1/8" - 6 and you can still get stuff for that. Never heard of 1" - 6 so I figured it had to be something small, or maybe a Euro standard from the UK or something?
I always took the parts out of the lathe and piled them into the stolen shopping cart. When the cart was full (heavy) we pushed it into the building next door. The old guy that owned the company would brooch the splines. I never had time to peek in there and see how his brooch machine was setup but it did nice work on those splines.
Hey Tony! What's your vocation? I'm graduating from engineering school this semester, but I've found that the majority of work in my field is desk work and analysis. We only have 1 manufacturing class in our entire curriculum! Your profession seems much more interesting. So what do you do for a living and how did you get there?
another thing i need to do too.. a picture explains more than 1000 words. which brings me to a project you might be interested in: -a centering stand for the mill, i didn’t buy one yet...adjustable up and down, thread fed centre.. :-) great job, thx. better than most tv news channels and talk shows.
Could you make. Follow along series for beginners. ...... Sort if like Making a project that is made up of multiple parts that are not mega challenging.
Don't you have that fancy extra axis chuck on the CNC lathe and a lot of small endmills and time to waste programming weird paths? Old problems require modern solutions!
I really really wish I had the equipment and knowledge for cutting splines. There's some great old equipment out there that could use new splined parts and this alone is causing these cool machines to be placed on the scrap heap. Thanks for sharing, you did a great job, BTW!
It won't work properly. Notice the grove around the shaft at 0:52? This is required to keep the 'knuckle' end engaged to the shaft. There is a little pin with a notch in it that is pushed out of the way then engaged in the grove and held in place with spring tension. What you built is very nice, but as soon as lateral movement is applied, it'll slip off the shaft.
Love these videos Tony. It is clear that you have forgotten more than I will likely ever know when it comes to these subjects. In other words, thanks for making me feel stupid.
Yeah, i was thinking the same thing. 1" 6 is ford 2n,9n,8n and some old farmalls f12, f20. There are off the shelf adapters that you could start with cheaper than custom machining.
It is very valuable to show how to do parts with a manual machine, also the procedure to do it. This skill needs to be retained so the knowledge isn't lost!
