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Cox Engine of The Month
February-2024
1/2A Nut's

"RC Speed Boat Power Drive TD .020"

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Post  Mark Boesen Tue Nov 28, 2017 12:06 am

Mud sent me this photo, something you don't see every day, c. '57-'58
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Post  MauricioB Tue Nov 28, 2017 4:58 am

Hi Mark, those engines look beautiful.
I have indicated one of them with a green circle, because I have a question, how is that engine attached to a bench or a model?Huh...
Do you have any additional accessories?
Pre Production Space Hoppers 57-58_10
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Post  Mark Boesen Tue Nov 28, 2017 10:29 am

I know the word prototype is way over used, almost to the point of meaningless, but these are real preproduction engines. My guess is the initial idea was to inclose engine in plastic airframe, like the Cox Shinn or the later Testors planes, saving the cost of four screws.
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Post  Mudhen Tue Nov 28, 2017 10:40 am

.


Last edited by Mudhen on Tue Nov 16, 2021 10:37 am; edited 1 time in total
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Post  KariFS Tue Nov 28, 2017 10:46 am

Could be that the long crankcase neck was supposed to be used as a camping point for the front of the engine, and the other clamp point would be the carb body between the needle assembly and the crankcase. Or maybe it is a "proof of concept" unit and supposed to be held on a clamp?

The other one looks like it has a bushing in front to enable the use of the longer crankshaft Huh... edit: Or is that crankshaft from a Space Bug/Thermal Hopper?

Off topic...
It would be so neat if someone produced a bee-compatible crankcase with side mounting lugs. The asking prices of postage stamp backplates would skyrocket! Imagine some mounting lugs on this:

Pre Production Space Hoppers Image15
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Post  MauricioB Tue Nov 28, 2017 3:37 pm

Here I share some photos with you, it is about this adaptation made by a man of about eighty years old, he has made some engines and parts, his name O.Nocera.
It has a venturi and bench, the bench is an aluminum profile, maybe, that engine that you show, also thought to tie it or hold it by means of such a system .... I only provide this as a suggestion .... Huh...

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Post  Mark Boesen Tue Nov 28, 2017 10:38 pm

Pre Production Space Hoppers Cid_0010
here's a beam mount design, if you look close it's actually a radial mount, extruded 'T' the 'beam' is not attached.


lol, and one of the fastest reedies in the world:
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Post  batjac Tue Nov 28, 2017 10:47 pm

KariFS wrote:
It would be so neat if someone produced a bee-compatible crankcase with side mounting lugs. The asking prices of postage stamp backplates would skyrocket! Imagine some mounting lugs on this:

Pre Production Space Hoppers Image15

*** SIGH ***

You just had to say that, didn't you?!?  I can think of a way to do it in about 45 minutes to an hour.  Now I'm gonna have to find time to make one...

The Prototyping Mark
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Post  Mark Boesen Wed Nov 29, 2017 9:00 pm

Here's another photo of Leo's K&B Tornado with custom beam mount.
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Post  MauricioB Thu Nov 30, 2017 10:02 pm

Thanks for the Green friends! that deserves to return the gratitude and share with you part of the activity of Mr. Nocera, I invite you to see this note that is December 2010.
Nocera shows here the Cloudster 1/2A-Texaco model with the Cox .049 engine and the most built-in carburettor.
Mr. Nocera today is over 80 years old and he was with some health problem, I hope he recovers. I will try to locate him at least by phone to cross a talk with him.
Possibly make a video of my engine with that carburetor and bench, to share here with all of you. Very Happy  Thumbs Up

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Here you can see perfectly the engine with its carburetor and bench by Nocera.
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