HOMEMADE - Grease Ram

I like the longer videos, nice job Matty.

No apology necessary for the longer video. Enjoyed every minute of it. :) Charlie

I never miss you or Kurt @CEE. I enjoy watching machine shop work and the problem solving. Loran from Ozark, Arkansas USA

If a greese piston can tighten the tracks on a big excavater which is basically the same as what you have created you should have no problem pushing out a pin. The only thing that could give is the piston seal not having a backup ring but if it does its an easy fix. Soft rubber seals are the best for sealing pistons but being soft they can blowout, by putting a especial hard plastic backup ring to give support blowout is virtually eliminated. Don't worry about lengthy videos, I love them, it means I can sit down and have a good cup of tea while watching without having to select another video still having half a cup of tea left. You create some amazing stuff in your videos, thanks for spending the time to share.

Don't apologize for a long video. You supply free entertainmet. So thank you for every minute you post on here.

Back in the day..... I removed locating pins in blind holes: drill, thread, install grease flitting in the pin, and jack the pin out with a grease gun.

Create video Maddie I wouldn't worry about how long it is your content will support much longer videos thank you for sharing

Proper sorry to hear about this setback, the missus had the same thing, only on her tonsil, about 15 years ago. She kicked it's arse, didn't even shut her up!!! Stick in there Matty, you'll soon be back on top.

Thats akeen idea Matty. Using a grease gun to power the cylinder is really thinking outside of the box. Great execution of the idea.

I’ve used brake wheel cylinder with its cup seals and plugs to push a broken rivet out of a shift fork down in a transmission. Used a bucket model high pressure grease gun that had a long hose so a helper could pump it for me. Worked one time and saved disassembling the machine, didn’t work the second time and I had to split that one and put shift fork in a press to get the rivets out. Cylinders were about 1” diameter x 2-1/2” long so pretty compact.

Actually, between the boring bar AND your new grease ram, you made yourself TWO really nice bits o' kit there, Matty! We should be able to give "10 likes out of 10!"

Nicely done mate. Re the orings, they're easy enough to spec. For a dynamic seal like that, around 10-15% compression and 70-80% fill gets you the right seal. Then it's selecting a cross section, there, the bigger the better. Stops it twisting, gives more tolerance etc. So assuming that bore was 50mm, a 3x44 oring would be a good size. That then puts the bottom of the oring groove at 44.75mm ± 0.15mm, that gets you somewhere in the 10-15% mark. The oring cross sectional area for 3mm diameter is 7mm, so 70-80% fill means the grove area needs to be between 8.75 and 10mm². Assuming you hit the groove depth tolerance, that gives a width of 3.565mm ± 0.13mm Given the interdependency of the tolerances and that you cut the bottom and sides pretty much at the same time, it's better to aim for the groove depth to be on the shallower end, cause that gives you a bit more room for the width to go over. If you end up with a 44.9mm diameter groove the width can go out to 3.92mm and still have everything in spec.

If you had been born during the Eqyptian"s era, I am betting they would have made you Pharaoh by moving massive weights with a simple looking tool (@@)! Matty, this concept totally floors this ole fart! Thx and hats off to you mate :-) Oh, the machining was awesome, and well filmed 👍👍

i watch these when i am kicking back. so longer means more kick back time.. i am okay with that.... i am also retired and look forward to my kick back time, watching longer videos

You do some really nice work Matty, and you get great finishes off the lathe as well. Great to watch & hopefully learn from. 👍👍👍

Great build! Perfect length on the episode! Don't apologize for a longer video! Thanks for sharing 🇨🇦

Another great video Matty. Some good shots of great work. Thanks

Ripper effort Matty, and super enjoyable watch - cheers!

I see Matty's hydraulic workshop coming soon, nice job for a first time.

Loved the longer video! That was a very well made project, nice one!