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  #61  
Old 01-26-2009, 10:21 PM
winson winson is offline
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Quote:
Originally Posted by billspad
They're engines and only an idiot calls them motors.

Actually I call them both but I didn't want you to be disappointed.

they are motors, not engines.
cato is an abbreviation, not acronym
prang is when a rocket meets an area of high drag(the ground) under high speeds

did ANYONE read the handbook of model rocketry by G. Harry Stine?!?!?!?!
ALL rocketeers need to read it cover to cover
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  #62  
Old 01-27-2009, 11:29 AM
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Shreadvector Shreadvector is offline
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Quote:
Originally Posted by winson
they are motors, not engines.
cato is an abbreviation, not acronym
prang is when a rocket meets an area of high drag(the ground) under high speeds

did ANYONE read the handbook of model rocketry by G. Harry Stine?!?!?!?!
ALL rocketeers need to read it cover to cover


It's also by Bill Stine.
http://www.questaerospace.com/itemdesc.asp?ic=9502&Tp=


Should'a bought some of those during the big end of year sale....
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  #63  
Old 01-27-2009, 12:33 PM
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Der Red Max Der Red Max is offline
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Quote:
Originally Posted by winson
they are motors, not engines.

did ANYONE read the handbook of model rocketry by G. Harry Stine?!?!?!?

Well, it's apparent (co-writer) Bill Stine hasn't (and doesn't he own/runs Quest?):

http://www.questaerospace.com/itemd...ic=5597&eq=&Tp=

I guess it's a matter of "Do as I say, not as I do"
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  #64  
Old 01-29-2009, 07:55 PM
winson winson is offline
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well, it looks like he hasn't
if he did quest would have boosters with holes in them
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  #65  
Old 01-31-2009, 08:57 PM
bgmineralman61 bgmineralman61 is offline
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Quote:
Originally Posted by Bob H
I'm pretty sure that I saw a thread about green colored motors on YORF some time back.

Anyways, on Christmas day, my sister in-law gave me 4 packs of Estes motors that had belonged to her late husband. They were in the blue diamond tubes and there was one tube of A8-3's, two tubes of B6-4's and one tube of C6-3's.

When I took them out of the tubes, I was surprised to find that they were the green colored motors. The nozzles on these are smaller than current motors of the same type.

When I asked how they were stored, I was told they had been in an unheated attic up here in the northeast for probably the last 30+ years. I assume that they are CATO's waiting to happen.

I was thinking that I could build a few Midnight Express paper rockets to see what happens since they have had severe temperature cycling but them decided to see if anyone wanted them.

I am not a motor collector so they don't have any more value to me than a current motor, but I understand that there are a few collectors out there. I am planning to attend NARCON in Connecticut this year so I can bring them with me if there is any interest.

Pictures:
1. Blue diamond tubes.
2. One each of green A8-3, B6-4, C63.
3. Nozzle comparison with current motors. L - R: A8-3, B6-4, C6-3
4. Nozzles with a scale in the picture just because Terry Dean is going to ask for one. L - R: A8-3, B6-4, C6-3


Wow, those motors do bring back some fantastic memories.
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  #66  
Old 01-07-2023, 12:14 AM
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blackshire blackshire is offline
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Quote:
Originally Posted by Bob H
I'm pretty sure that I saw a thread about green colored motors on YORF some time back.

Anyways, on Christmas day, my sister in-law gave me 4 packs of Estes motors that had belonged to her late husband. They were in the blue diamond tubes and there was one tube of A8-3's, two tubes of B6-4's and one tube of C6-3's.

When I took them out of the tubes, I was surprised to find that they were the green colored motors. The nozzles on these are smaller than current motors of the same type.

When I asked how they were stored, I was told they had been in an unheated attic up here in the northeast for probably the last 30+ years. I assume that they are CATO's waiting to happen.

I was thinking that I could build a few Midnight Express paper rockets to see what happens since they have had severe temperature cycling but them decided to see if anyone wanted them.

I am not a motor collector so they don't have any more value to me than a current motor, but I understand that there are a few collectors out there. I am planning to attend NARCON in Connecticut this year so I can bring them with me if there is any interest.

Pictures:
1. Blue diamond tubes.
2. One each of green A8-3, B6-4, C63.
3. Nozzle comparison with current motors. L - R: A8-3, B6-4, C6-3
4. Nozzles with a scale in the picture just because Terry Dean is going to ask for one. L - R: A8-3, B6-4, C6-3
Wow--I remember when Estes rather briefly made those green motors (I think it was due to a temporary shortage of the regular tan paper). We flew those in my Cox Little Joe II, and (using green or blue 13 mm mini motors) in my Estes "Firing Line" Vampire, as well as in my father's Estes Falcon and Big Bertha. They had the same performance as the tan motors of the same types, but they did look nice.
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  #67  
Old 01-20-2023, 02:11 PM
ghughes1138 ghughes1138 is offline
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Default Centuri also...

Some grren and blue motors from Centuri.

I used to bulk order engines for our club in Melbourne (Australia) from Centuri. We flew a LOT of their blue and green engines in the day. No catos, but no doubt a few prangs.

gary
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  #68  
Old 01-20-2023, 06:20 PM
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ghrocketman ghrocketman is offline
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Years ago I had a boatload of those Blue and Green Centuri mini-motors.
They all worked fine.
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  #69  
Old 01-20-2023, 11:14 PM
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blackshire blackshire is offline
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Quote:
Originally Posted by ghughes1138
Some grren and blue motors from Centuri.

I used to bulk order engines for our club in Melbourne (Australia) from Centuri. We flew a LOT of their blue and green engines in the day. No catos, but no doubt a few prangs.

gary
Centuri color-coded their motors on purpose. With the tan-colored motor casings, single-stage motors were and are green-labeled (the ink color of the text), upper-stage motors (which have longer delay times, such as the C6-7 [versus the shorter-delay, C6-3 single-stage motor]) are blue- or purple-labeled, and the zero-delay booster motors are red-labeled. In your collection of Centuri motors in the picture, the label ink color is the same (blue) for al of them, and the casings are color-coded. ALSO:

I almost became an Aussie myself (my parents were going to emigrate there in the mid-1970s, and I got to visit there twice, in 1971 and 1972, and my older brother Richard came on the 1972 trip). But my father dithered, and the currency exchange rate changed to a point where the move was no longer practicable. I have always wondered, "What if...?" As well:

Do you by any chance live within "reasonable visiting distance" of Woomera? In addition to their outdoor "rocket garden" museum (they also have a smaller indoor collection on display), I've seen pictures showing that all around town, there are missiles and sounding rockets everywhere--at corners, on "islands" in intersections, in the park, mounted on the walls in pubs, etc. Many of these are Australian and British vehicles for which scale modeling data is very scarce--when it's available at all, which it often ^isn't^. Yet those rockets are sitting right there in plain sight, where they can be measured, and from what I've read and heard, the locals are usually very accommodating to folks who wish to "tape out" the vehicles (I've read and posted on the "Australian Rocketry Forum" [see: https://forum.ausrocketry.com/ ], and a few ARF members have done that at Woomera.)

Advance Australia Fair! (When I would have emigrated, it was still Waltzing Matilda.)


-- Jason
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Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
NAR #54895 SR
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  #70  
Old 01-31-2023, 03:57 PM
ghughes1138 ghughes1138 is offline
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Hah! It never occurred to me that Centuri casing colors were deliberately following the old green/blue/red label scheme. Serves me right for being color-blind. Centuri was a class act in many ways.

We discussed Woomera over in the MPC History thread. I haven't been there since it was openned up to the public. When I went it was a closed town (it was primarily the support town for Joint Defense Space Communication Station Nurrungar), requiring a security clearance to enter the town and they were very antsy about photographing anything. Nurrungar is gone now.

gary
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