1/2A History Lesson

**944_Jim** Sun Aug 22, 2021 7:17 am

Sorry if I'm duplicating someone's post here (I thought I found it somewhere else, but can't find the original link).

Seeing this last night shocked me to see how far back my memories of this hobby went. The Leisure Dynamics entry was earlier than I remembered. It was a good, fast read.

Enjoy!

https://adriansmodelaeroengines.com/catalog/main.php?cat_id=309

davidll1984 Sun Aug 22, 2021 8:52 am

I just looked at the link I read some old cox advertisement I read some strange specificity one Particularly intrigued me question what is a tem trol piston??? Look this advertisement I took a screenshot of the screen I don't know if I have the right to share but hey have To chare this

Improve crankchaft bearing? I wonder what is this improvement??

Marleysky Sun Aug 22, 2021 9:12 am

Very Nice of you to hook us up to that article. Great reading and lots of information to boot.

rsv1cox Sun Aug 22, 2021 10:04 am

Wow, good stuff. Saved it.

Only engines listed that I don't have are the Canuck, O&R Marine, and the Wasp (I think). Even have the Arden Plug.

Davenz13 Sun Aug 22, 2021 1:58 pm

Wild stab at it but Tem-Trol might be a shortened Temperature Controlled

KariFS Sun Aug 22, 2021 2:36 pm

Davenz13 wrote:Wild stab at it but Tem-Trol might be a shortened Temperature Controlled

Yes, I remember reading that it meant temperature-controlled machining. Not sure about the details, probably had to do with the temperature of the cutting fluid.

Scotland421 Sun Aug 22, 2021 5:17 pm

Temperature control or TCC, Was used by Cox in Santa Anna, CA. Also used by K&B/Veco. It is a process where the bar stock is kept in the exact same temperature as the Machine shop. This prevented variances in tolerances, and measuring, due tae temp differences. This is important when ye machine parts with micron tolerances

andrew Sun Aug 22, 2021 9:53 pm

I have a friend who owns a high end CNC shop in a nearby town who had recently acquired and installed a new piece of equipment. They had to allow the it to sit for at least 72 hours before they could calibrate it -- as noted above, to stabilize its temperature to the ambient shop temp.

I really like the inked illustrations used in many of the ads -- done when draftsmen were craftsmen.

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