George Logue patterns

I believe, from reading the Board minutes, that the George Logue manifold patterns were sent to the Earthmoving Legacy Center with the understanding that ACMOC members could borrow the patterns to use. Why have these patterns now been boxed up and sent to Australia?

Thanks

Ken

Ken,

The patterns have been in ACMOC storage for years with little interest in them. The Club has no ability to put them to use, and frankly, many of the patterns were for items that we have not seen any demand for for quite a long time. Add to this, that the patterns have very likely degraded over time due to environmental conditions, storage, and moving them. To my knowledge, no member has ever borrowed one of the patterns, nor asked to.

Our Australian brothers offered to take them and if any member needs parts made from those patterns that they will happily facilitate getting the parts made. The board felt that this was the best disposition of the patterns, they stay within the Club and are not discarded or given over to a commercial concern.

I do not know what manifold patterns you are referring to, but to the best of my recollection, there may have been one manifold pattern in the bunch, if you are in need of one of those manifolds, let me know and I can get you in touch and I am sure that a good result can come of it.

Hi, Folks.

If those patterns have gone to where I suspect they have gone, I think that club members WILL have access to them, possibly even to the point of having products made from them.

Just my 0.02.

if they have gone to chapter 19 they do make reproduction parts. so thats a good thing they could be used to make fresh patterns that can then be used to cast new parts.

that's the thing about casting patterns they have to be maintained and remade occasionally as they are timber and do suffer damage due to age and possible pest attack. they could be used as master patterns to make 3d printed ones that then become the "working" pattern. also once digitised its easier to share them as its a file that you could then use to print your own patterns.

a model engineer i know does his patterns this way design in cad, 3d print it, make sure it fits, then make the moulds and cast the part in metal much simpler than using wooden patterns.

Clarify Please - is someone needing the pattern to have a particular part cast? If the patterns are with ACMOC Chapter/Club, the location is not the issue. It would seem that the part should be specified and then determine if that pattern exists and is useable. The question would be are they needed by someone to use and are they available to have new patterns made and the parts cast based upon these patterns. "trainzkid88" has valid points on the pattern conditions and age. - cts

Are these the patterns the club used to produce the Sixty manifolds? I’ve got a friend that sure would like to buy a set if any are around.

BP

Hi, Bruce.

You might like to contact Chapter 19 direct to see what they can do.

https://acmoc.org/chapters/chapter-nineteen

Just my 0.02.

Do they have a list of what patterns are there? More people would be more interested if you know what is there for patterns. Are they already gone to Australia?

That would be correct.

The plan for the moving of the patterns was to save the Club storage fees (there were a couple of pallets) and also for Chapter 19 to assess and catalog what’s there in order to try and make them available for members if desired. Having spoken to experts in the field of casting it was felt that they were a bit past their sell by date and not up to current standards. Things like not having period correct casting numbers and some having George Logue’s name on. In these days of 3D scanning and printing things have moved on a bit. The reason they went to The Earthmoving Legacy Center first was purely because MTS ship stuff regularly to Australia and they very kindly agreed to ship them for free. Not a bad deal considering the distances involved!

I offered three times to store these items with absolutely no response from the club. The only cost to the club would have been getting them to my place. The Sixty patterns were just reworked by the club to Cat specs. Changing the part numbers to the correct font is easy as is the removal of George's name, both of which were done on the Sixty patterns. In the Cat's production run of the L/PL manifolds, the font used on the part numbers and the location of where the part numbers were changed several times. Early intakes did not even have the core plugs on the ends. For many in this club, having a solid usable casting that is not "up to current standards" is better than the scrap manifolds they have now. I bought a Sixty manifold from the club because that was the only option. I have also bought many manifold parts from Catman. Catman's quality is not affordable to many of our club members, and a lower-cost local option would have been nice for them.

3d printing of patterns and 3d printing of foundry molds is current tech. If I were to make a pattern now, for a run of a few parts, it would be 3d printed. If it were a one or two-off job of a complicated casting that needed several core boxes, I would go with the 3d printed foundry molds. If you want to see an excellent example of 3d printed molds, look at Wendall Kelch's current work on the John Deere Dain tractor. This Facebook page shows a video of a computer test run of the gating systems with metal temps as the mold is filled. Programs like these are also used to detect stress risers that can happen during metal freeze, shrink problems, etc. Casting tech has come a long way, but there is still a place for a cupola, wood patterns, and some sand.

https://www.facebook.com/groups/533527626787996/

For many of us who like to make parts and make them correctly, we need the blueprints that Cat has. I hate trying to reverse engineer parts.