**VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (October 2018)

My vote has been cast.

We have a WINNER!

Congratulations to Mudhen and his "Prototype T.D. .010 c.1960"



I'll get the picture up shortly!

Congratulations  Mudhen yours is a really valuable historical relic.

I wonder if apart from the dim colored carb body and backplate that were fashioned red and later black for mass production, and the missing anodization, are there any other features of this prototype different from the stock 010 engines? Or did COX hit the nail right smack on its head with the prototype and nothing had to be changed because it was already as good and perfect as it could be?

Congratulations MUDHEN!! Very Nice !!

Hey…Cool!

Thank you. What a neat tribute to the .010.
There are differences. The off-white is Delrin’s natural, unpigmented color, though it has yellowed with age.
Cox had a surplus Dental injection mold machine. Mold cavities were cut by hand into aluminum, then set into the machine. Plastic was heated and hand-pumped into the cavities.
It was a great way to manufacture experimental parts in small lots without being too costly or having to invest in more advanced molds.
The glow head center post and associated parts are from a .020. The other parts were free-hand machined by Art Carlson.
It is possible at this late stage of development that Cox already had experimental crank case extrusions manufactured by Alcoa, but if the crankcase is extruded, it’s hard to tell.
Cox had several “crackerjack” machinists and Art was tops.
Mud

A very cool engine and a very deserving winner.

Congratulation's Mudhen good photo taking effort!

Says "BLW Collection 2011" bottom right corner is that one of the folks that worked at the Cox company?
Is that a wood prop, if so do you know what size pitch / dia.? Perhaps it was benched tested back in the
day with that prop before the carb body cracked, any data on it?

   

Thanks, Mudhen for sharing your photo and garnering the win this month. That is a rare one, you certainly have a prized possession in your hands, not just any prototype but the smallest mass scale production engine at that. Also, thanks for the historical info on its creation.
Congrats.

Congratulations Mudhen !!! ... is a very good photo of a very good example (ejemplar) of COX !

CONGRATS Mudhen. Nice Pic . Nice little engine .