Great Dane excavating co.

[9W Monighan]

opps double posted!
didnt show up this morning ....sorry

[9W Monighan]

Do a rectangular frame above the screw bosses then rectangular pocket with a larger diameter milling cutter just inside of the bosses, then go back and profile the bosses with smaller endmill .

[Efroeh]

any info on the speed controller?

[Cooper]

I understand what you said Steve, thank you. So many things to remember and to keep in mind. I also found out I can drive tool paths off of a sketch. Say I wanted a point in middle and to radiate outward/ inward. Cam will recognize part and not violate part but drive paths according. This is like endless learning!!! And to think that I can honestly say I have never read a book!! Well at least cover to cover an not skipping pages, chapters,,, lol!! Although I have got to get a machinist book,,,,

I also decided to cut up the remainder of an old treadmill belt I had. I'm just not happy with the polyurethane rubber. It being so thin, good to conform to roller assemblies, but it also wants to curl up and flip onto itself at end roller/drive roller. (Sometimes). It's .03" thick, non backed. Wish I could find single ply treadmill belting 4" wide and a roll 10'. Normally called a walking belt being single ply. Then I would not have to try and cut a straight line 10' long. Always little tweaks and suprizes popping up. Trying to make this thing idiot proof!! Lol!!!

[Cooper]

Oh and drive/free rollers have vertical sidewalls about .35" and a small taper at top to help belt track. Although I could put some super thin Teflon tape around free roller to help it slide(to keep centered) the drive roller is knurled for grip.

[9W Monighan]

RW I have the tool to splice the urethane belts together. It' basically a soldering iron with a flat plate.


I have some thin rubber with cloth conveyor belting that I got a piece from McMaster that is 1/16'' thick . It looked good so I ordered a few feet from a company here in Pittsburgh called Conviber. I plan on using the Clipper type lacing to join it together.

[Cooper]

https://youtu.be/nTphz-SjezI

First tests,,,

[9W Monighan]

Works nicely. Maybe we can feed the crushed limestone through it from my crusher.

I almost stopped in yesterday but customer was 2hrs late meeting me at the Columbia Mall. He got a DOT check coming into PA around Scranton.

After the delay I needed to get over to my camp near Punxy before dark to fix some roof leaks on one of my sea containers.

[Cooper]

Anytime steve,, your always welcome,

I figured this would be a good addition to your crusher. We will find therocks and crush them into road base ��������

[Cooper]

https://youtu.be/24wdz5R54Gw

Warning, not what you are expecting,,,

I was getting things around for the upcoming cabin fever eco and the malderbeast decided to add some “dead” weight to help test to make sure everything was working correctly,,,,,

[skeeter]

I really like that cat! Mine would have leapt out of the truck as soon as I tried to move it!

[DADSGARAGE]

What a cat!!! LMAO!! Not a care in the world....just don't back over my tail!!!

[nes999]

That cat couldn't care less!

[modelman]

I like the cat video-do you have any video of your trommel working at Cabin Fever? Surely at this fantastic event someone has more video than what has been posted.

[Cooper]

A side project that I’ve been wanting to do for some time now. I’m making a valve body that will allow use of m5x6mm hose fittings. The valve body is shown above, I still need to grind and lap the surface. Been wanting this for the projects that require more flow. The permacon valve ports are .063” and I’m making these .125” basically doubled the flow (I know for those that are hydro dynamics the flow is not exactly doubled but will be a considerable increase. ).

And for those that wanted to see some videos of the trommel working at the last event, cabin fever, my weekend was cut short due to bad weather. I had things in place to be handled but with the amount of snow and then rain, and everything freezing I had to take care of business. So if anyone does have video of the event , by all means share . I had a great time and Sunday was the day I was planning on taking the time to get some pics and videos. And for those new faces , happy to have met you and for those that I didn’t I’ll be looking forward to a time I do.

[Lil Giants]

Originally Posted by Cooper

The permacon valve ports are .063” and I’m making these .125” basically doubled the flow (I know for those that are hydro dynamics the flow is not exactly doubled but will be a considerable increase. ).

pie x r squared

The math works out to nearly 4x (3.69) the volume increase of 0.065 to 0.125

Martin Meinhardt (the original maker of the rotary valves that Premacon copied) does offer a larger valve, though I don't know how much larger. Fumotec could get it for you. I could nail the info for you, if you want?

Carry on with your version, it'll be exciting to see you accomplish this too.

[Cooper]

Thanks joe, you know me, I'm always doing the things the hard way, look at it, study it, think about it, build it, then realize why it doesn't work, then read some info pertaining to it, then figure out how to make it work. .

The hard part for me is trying to figure out how to machine it , keeping in mind mating surfaces and allowing for surfaceing. (Also with dimensions of applicable materials that I have or easily obtain. Trying to keep my tollarances of +\- .001. That's on the radial side of things. Axial sides should a lapped surface.

As far as flow increase, the fittings are still less than .125". But larger than the 4mm hose fittings. I didn't take exact measurements of them but that will be the smallest diameter that oil passes. That's why I just redneck engineered (eyeballed) my non existent math . And similar to original valve all mating surfaces get an o ring for sealing. The valve and valve housing is where I need to get a tight fit. I plan on making the rotary valve part one piece, nesting it inside the housing and then surface grinding. Probably going to use the parts against each other to achieve a lapped fit. (Only for the top of rotary valve and valve housing. Then flip them into a fixture and surface both parts to achieve exact same heights. At least it looks that way from the back of my eyelids .

[Cooper]

Still need to cut the outside profile. This part Cost me a 1/16” endmill, not sure why it broke but some tweaking and still cutting other parts without breakage. I’ve realized a good start is to check run out on the smaller end mills. Got it down to less than .0002”. At least that’s as close as my eyes can read a .0005” indicator. Again this hobby has become an endless pit of learning. Sometimes it’s fun other times it’s rum-n-coke time to make it fun!! .

[Cooper]

Forgot one. Since I’ve been (semi) accurately measuring tools my tollarances have increased and re-machineing has decreased. First try nailed the .752” diameter I was shooting for. This I.d. Is milled so not a 100% round hole but doesn’t need to be. Some clearance for rotary valve to rotate.

[9W Monighan]

Is that ground flat stock on that plate with the O rings?