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  #1  
Old 01-09-2019, 09:52 PM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
President, MAYHEM AGITATORS, Inc.
 
Join Date: Jul 2005
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Default Wanted: 18mm Aerotech E reloads

I'm interested in acquiring some vintage RMS 18/20 "baby" E loads.
PM me if you have any willing to part with.
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  #2  
Old 04-16-2020, 05:17 PM
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ghrocketman ghrocketman is offline
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Default

Anyone have any ?
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  #3  
Old 04-16-2020, 05:27 PM
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LeeR LeeR is offline
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Location: Colorado
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Quote:
Originally Posted by ghrocketman
I'm interested in acquiring some vintage RMS 18/20 "baby" E loads.
PM me if you have any willing to part with.


I wasn't aware of E reloads for the 18/20. I seem to remember B and C quite awhile back. When I bought my first 18/20 RMS I only saw D13 and D24 available.
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  #4  
Old 04-16-2020, 05:54 PM
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mwtoelle mwtoelle is offline
Flying since 1977
 
Join Date: Oct 2010
Location: Middle TN
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Default

The only E reload for the RMS-18/10 was the E27-4T. It had a total impulse of 23 Newton-seconds. Unfortunately, there is not enough room in the case for a longer delay column. The motor worked well on the heavier 1.9" Aerotech kits. Since these reloads have not been manufactured since the early 1990s, you are likely to get a bonus delay if you don't swap the old delay for a new one. I believe these reloads used the same delay as the D24-4, but they were discontinued long before Aerotech released the Hobby Delay Kits (HDKs) for the hobby-line RMS motors.
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  #5  
Old 04-16-2020, 09:32 PM
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5x7 5x7 is offline
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Posts: 1,102
Default

Aerotech made a
B6-Blue Thunder
C4-White Lightning, grain slotted at a shallow angle to produce a moon burner profile
C6-White Lightning
C12-Blue Thunder
The current D13 and D24
And the mentioned E27

Itís cool AT added the glider motors C3.4, D2.3 for
The case,

Last edited by 5x7 : 04-17-2020 at 07:38 AM.
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  #6  
Old 04-16-2020, 10:02 PM
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Sprint60 Sprint60 is offline
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Location: Greater Kansas City
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Default

Quote:
Originally Posted by 5x7
Aerotech made a
B6-Blue Thunder
C4-White Lightning, grain slotted at a shallow angle to produce a moon burner profile
C6-White Lightning
C12-Blue Thunder
The current D13 and D24
And the mentioned E27

Itís cool AT added the glider motors C3.4, D2.3 for
The case,


Wow, B through E in that one case. Too bad they weren't profitable.
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NAR 78486 L2
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  #7  
Old 04-17-2020, 12:01 PM
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ghrocketman ghrocketman is offline
President, MAYHEM AGITATORS, Inc.
 
Join Date: Jul 2005
Location: Michigan
Posts: 10,651
Default

Unfortunately now all we can barely get are 20n-sec D's.
Would really like that "Baby E" option for my Mars Lander.
The B's and C's are pretty much covered by Q-Jets.
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When in doubt, WHACK the GAS and DITCH the brake !!!
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, if you have to ask, you probably aren't
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  #8  
Old 04-18-2020, 12:04 AM
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Initiator001 Initiator001 is offline
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Location: San Diego, CA
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Default

Quote:
Originally Posted by Sprint60
Wow, B through E in that one case. Too bad they weren't profitable.


I know far more about that whole product line at AeroTech than I care to remember.

...And now, another episode of "Bob's wacky history of model rocketry products".

When the model rocketry line of RMS products was developed at AeroTech in early 1992, the RMS-18 motor casing was just going to have a 'D' performance load for it. This became the D13 load.

(On another tangent, when the RMS-18 load was determined to be a 'D13', Dan Meyer took a picture of the RMS-18 casing and faxed it to then-NAR President Pat Miller with a note that basically said, "Be afraid. Be very afraid.")

So the D13 would be the load for the RMS-18 casing and that was that.

I couldn't leave it alone.

"What's the largest impulse load we can fit in the case," I asked?
Quickly followed up with, "Can we put smaller loads in the case?"

That got some people thinking.

TBC...
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