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  #11  
Old 09-22-2016, 09:34 AM
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ghrocketman ghrocketman is offline
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The ONLY person that would pay anywhere near the asked $1500 would not only have to be a dedicated rocketry hobbyist, but also one that this particular item holds particular sentimental value as well. Rarity often does not determine VALUE.
Being rare often does increase value, but there also needs to be an actual want for the item in question for it to have marketable value, rare or not.

While the audience on ebay is HUGE, the correct audience for specialized items such as this is actually lousy.
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  #12  
Old 09-22-2016, 07:42 PM
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Royatl Royatl is offline
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Quote:
Originally Posted by Gus
In doing some research I was looking at picutures and descriptions on the Smithsonian site. I noticed that the original Rock-A-Chute motors, made by Orville Carlisle himself were actually 13 mm motors ("Dimensions: Overall: 1/2in. x 3 3/8in. (1.3 x 8.57cm)"). The motors in the pictures below (from NASM) have printed labels so they were actual "production run" motors meant for sale, made by Orville himself, before G. Harry and before the motors made by Brown Manufacturing.

So a few questions:

Does anyone know why the switch was made from 13mm to 18mm?

Does anyone have any pictures of either these motors being used or the motor mounts of the earliest Carlisle rockets.

Does anyone know if the test models G. Harry initially got from Orville used these same 13 mm motors (I presume so since these were given to NASM by G. Harry).

Finally, does anyone have any idea what Orville Carlisles designations of "4-4" and "4-4-2" on the motors stood for?

Thanks,

Steve


This is probably already answered, but Brown said they could make motors for MMI cheaper if they used their existing tooling for the Zenith BuzzBomb! Harry first related this story in Model Rocketry Magazine when MPC introduced the MiniMotors in '71.

Specifically, look in the July 71 issue "The Old Rocketeer: Engines Full Circle". Page 27
http://www.ninfinger.org/rockets/Mo...03n09_07-71.pdf

The motors Carlisle sent to Harry in '57 were the 13mm motors. There was another manufacturer around 1965 that introduced 13 mm motors but was unsuccessful ("Uni-Jet").


Of course, things in Harry's articles were sometimes tinged with literary licence. Note the paragraph where Harry indicates that Vern walked in off the street unannounced, where it is now well established that Harry went looking for Vern. Though if you think about it, maybe it happened just as he said, he was just expecting Vern to show up after giving him the challenge.

As for the numbers:

According to Carlisle's letter to Stine of Feb 13, 1957,
The first number tells "how much booster is in the unit." Probably how many scoops of powder.
The second number tells "the kind of powder".
The third number tells "what the delay charge is made up of." where 2 is slower than 1.
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Last edited by Royatl : 09-22-2016 at 07:59 PM.
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  #13  
Old 09-23-2016, 12:17 PM
John Dyer John Dyer is offline
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Quote:
Originally Posted by sandman
If it's just for display, it could be duplicated in wood or polycarbonate.

But again, you would need dimensions.


I was looking at the MMI Arcon kit instructions, and they reference the "42 inch tall deluxe tower" so there's 1 dimension.

And I would prefer to build it as a functional tower - you never know what you would want to do once built.

John
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  #14  
Old 09-23-2016, 01:37 PM
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sandman sandman is offline
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Quote:
Originally Posted by John Dyer
I was looking at the MMI Arcon kit instructions, and they reference the "42 inch tall deluxe tower" so there's 1 dimension.

And I would prefer to build it as a functional tower - you never know what you would want to do once built.

John


Oh, I can make it functional

But I will need more than one dimension.

If someone can go to the museum and get some good close up pics and close dimensions that would be enough for me
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  #15  
Old 09-29-2016, 01:14 PM
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Gus Gus is offline
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The MMI launch tower is back on ebay at a reduced price.

http://www.ebay.com/itm/Vintage-MMI...AAOSwzaJX4Ka r

If the ebay poster listed this in an auction starting at 99 cents, what do you think it would end up selling for?

My impression is that rusted as it is, missing half the parts, and no box, I doubt it would reach $200.
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  #16  
Old 09-29-2016, 01:18 PM
John Dyer John Dyer is offline
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Quote:
Originally Posted by Gus
The MMI launch tower is back on ebay at a reduced price.

http://www.ebay.com/itm/Vintage-MMI...AAOSwzaJX4Ka r

If the ebay poster listed this in an auction starting at 99 cents, what do you think it would end up selling for?

My impression is that rusted as it is, missing half the parts, and no box, I doubt it would reach $200.



I wouldn't pay more than $10.00...

I guess I better not say that too loud - he might hear me

John
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  #17  
Old 09-29-2016, 09:24 PM
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mojo1986 mojo1986 is offline
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Quote:
Originally Posted by Gus
The MMI launch tower is back on ebay at a reduced price.

http://www.ebay.com/itm/Vintage-MMI...AAOSwzaJX4Ka r

If the ebay poster listed this in an auction starting at 99 cents, what do you think it would end up selling for?

My impression is that rusted as it is, missing half the parts, and no box, I doubt it would reach $200.


Agreed. You would just have an incomplete kit, and how the heck are you ever going to complete it??
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  #18  
Old 09-30-2016, 09:35 AM
John Dyer John Dyer is offline
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Quote:
Originally Posted by mojo1986
Agreed. You would just have an incomplete kit, and how the heck are you ever going to complete it??



A good machinist could probably replace the missing parts...

But then it wouldn't be an original, and whatever value you assigned to it would really not be valid.

Cloning one (if we can get some of the measurements) would be cheaper, and you wouldn't be afraid to use it.


Question for the group - should this discussion be moved to another thread? we kind of got off-topic, which is talking about Carlisle's Motors.

Completely my fault...


John
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