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Noob finds Cox engine in Grandpa's shed - Page 2 Empty

Noob finds Cox engine in Grandpa's shed

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Noob finds Cox engine in Grandpa's shed - Page 2 Empty Re: Noob finds Cox engine in Grandpa's shed

Post  Ken Cook Sun Oct 03, 2021 5:27 am

Taking apart a Cub can be risky. If the piston is stuck in the cylinder and you loosen the cylinder, it twists the rod and it doesn't take much to twist it or even break it. They came with two types of rods, a steel rod and a alloy rod. Either one was fragile. Yours has a aluminum backplate, older ones had magnesium and they corrode badly so if you remove it, you run the risk of it breaking in the process. There's also a very thin and fine brass shim under the base of the cylinder which can be damaged by even holding it. Charles Brebeck retired a year ago and he was selling off what was left for parts. The parts to my understanding went to the dumpster. Yes, the quality of a OK is quite prehistoric to a Cox but the OK's actually can run quite well. They're considerably louder than a Cox engine so don't equate the noise as a trade for power. The OK can handle high percentages of nitro. This also makes them even louder. There were so many variants of OK engines, it's important when searching for parts you know what you have. What used to be a dime a dozen are now being sought out collector items. I discarded them for 40 years and now that I have a purpose for them, they're difficult to source. They're extremely light and they're anemic which makes a great freeflight engine.
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Post  rebelrider.mike Wed Oct 13, 2021 3:35 pm

I went and saw Grandpa again this weekend. While we were working on the shed, I set up the Cox engine and got it running for a couple minutes. He got a kick out of seeing it run again after 45 years.

The shipment I ordered from Cox International came in the mail just before I left, but I haven't had a chance to mess with it yet. So the old engine is running with all it's original bits at the moment. I've placed another order for what I need to properly rebuild and repair all three engines.

Hopefully I'll be back in a couple weeks with some pictures, once they're all built back up and working.
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Post  MrGoodwreck Wed Oct 13, 2021 11:54 pm

Awesome!

I bet your gramps was pretty stoked.
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