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Post  Cribbs74 on 1/22/2012, 7:56 am

When did Cox stop stamping cylinder numbers? None of my engines have numbers stamped on them and yet I see stamped cylinders all the time. Is it a hit or miss type thing or was there a period of time when they just came sans stamp?
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Post  nitroairplane on 1/22/2012, 8:03 am

well read this.
http://en.wikipedia.org/wiki/Cox_model_engine#Cylinders
it helps a lot with cylinders.
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Post  Cribbs74 on 1/22/2012, 8:10 am

Indra, I was just there, it doesn't say anything about when they started or stopped. I may have missed it.
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Post  warrenlead on 1/24/2012, 2:43 am

According to Dan Sitter's Cox Model Engine Handbook, "Generally the numbers were imprinted on the base of cylinders starting June 1, 1961 and continued as new cylinders were developed.... the practice continued until 1976"

The idea was to distinguish different cylinder types during production runs. So if there was only one type of cylinder being produced at a certain time there would be no need to stamp them, hence why you sometimes get cylinders with no numbers on them.

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Post  nitroairplane on 1/24/2012, 2:46 am

But them then how did the #1 slit cylinder come about?
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Post  Cribbs74 on 1/24/2012, 10:21 am

warrenlead wrote:According to Dan Sitter's Cox Model Engine Handbook, "Generally the numbers were imprinted on the base of cylinders starting June 1, 1961 and continued as new cylinders were developed.... the practice continued until 1976"

The idea was to distinguish different cylinder types during production runs. So if there was only one type of cylinder being produced at a certain time there would be no need to stamp them, hence why you sometimes get cylinders with no numbers on them.


Thanks Warren,

I knew the why but, not the when. Much appreciated.
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Post  Cribbs74 on 1/24/2012, 10:28 am

nitroairplane wrote:But them then how did the #1 slit cylinder come about?

If you are speaking about crankbndr's cylinder it could be any reason. Simply a worker who was tired of confusion an decided to stamp like it was done in years past or possibly a modeler who wanted to keep things straight for his own purposes.

Upon further inspection the #1 appears to be scribed and not stamped. I may be wrong there. If scribed then it's a good possibility it was done outside the factory.
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Post  John Goddard on 1/28/2012, 12:51 pm

Just a thought.
I imagine that 61 was just about the pinnacle of production when the ability to distinguish between the different cylinders for the many different products they'd
Be manufacturing every day would have been paramount. 76 was perhaps the beginning
Of the end where perhaps individual weeks were dedicated to single model
Production which might explain no more numbering.
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Post  Mudhen on 1/28/2012, 6:30 pm

John Goddard wrote:Just a thought...76 was perhaps the beginning of the end...
Interesting thought, John.
Although off topic, I believe the “beginning of the end,” was when Cox moved away from hobby/competition engines to slot cars, gardening tools, and toys. These diversities may have been lucrative in the beginning, but they had an egregious end. I often wonder where the company could have been had it remained focused on what it did best.
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Post  nitroairplane on 1/28/2012, 6:37 pm

Mudhen wrote:
John Goddard wrote:Just a thought...76 was perhaps the beginning of the end...
Interesting thought, John.
Although off topic, I believe the “beginning of the end,” was when Cox moved away from hobby/competition engines to slot cars, gardening tools, and toys. These diversities may have been lucrative in the beginning, but they had an egregious end. I often wonder where the company could have been had it remained focused on what it did best.
Mud

I reckon through better management through from the late '70s it could have survived.
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Post  Jason_WI on 1/28/2012, 6:50 pm

Maybe the Conquest 40 would have made it to production.
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Post  nitroairplane on 1/28/2012, 6:52 pm

I reckon cox would hae been the first to get into BNF warbirds and stuff.
I find it kin of ironic that cox started the RTF craze that eventually killed them.
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