I'm under the impression that both these examples could come back. Both went away with the fire at Aerotech. There are others as well. My take is it's that they're stilling getting everything back on line. There are alternatives in some cases. For example, Ellis has a G37 that's comparable to the G55.Originally posted by noise I see cool motors in RockSim (D3, G55) that are now OOP, what's up with that?!
Originally posted by noise
I'm sure this has been discussed before, but I'm in the mood to create a new thread.
I see cool motors in RockSim (D3, G55) that are now OOP, what's up with that?!
Originally posted by RoyGreen
D3 could not lift much, was very hard to ignite (it was an end burner and had a very tiny nozzle throat). In addition, small single use motors are just difficult to assemble.
IIRC, the G55 was a single use 24mm G, and I think Gary had mucho problems with casing material. I think there were other design parameters that were close to the edge.
There was another 24mm G motor that Gary used to make for dirt cheap called the G42. Great motor!
Originally posted by heada
Multiple reasons but I bet the most important one is money.
Originally posted by Initiator001
I do not recall the G55 being problem prone during my tenure. They had low sales volume and used up propellant that could have gone into E15s. Good profit margin, though.
Ah, the G42, the Rocketflight G100 killer. Dirt cheap=little/no profit. Another motor which used up propellant that could have gone into E15s. The designation 'G42' was the result of a long set of motor testing trying to develop an 'E42', 'F42', etc., by Scott Pearce and myself. We were reading too much Douglas Adams back then. [/B]
Originally posted by RoyGreen
I'm noticing that these Texas stores all have good supplies of discontinued Estes motors! Did they hoard everything, make Estes think they weren't selling, so Estes would discontinue them and they could then make a mint on them, doling them out pack by pack to those in the know??!!!
Roy in the "Conspiracy Corner!"
Originally posted by RoyGreen
I'm noticing that these Texas stores all have good supplies of discontinued Estes motors! Did they hoard everything, make Estes think they weren't selling, so Estes would discontinue them and they could then make a mint on them, doling them out pack by pack to those in the know??!!!
Roy in the "Conspiracy Corner!"
Originally posted by RoyGreen
D3 could not lift much, was very hard to ignite (it was an end burner and had a very tiny nozzle throat). In addition, small single use motors are just difficult to assemble.
IIRC, the G55 was a single use 24mm G, and I think Gary had mucho problems with casing material. I think there were other design parameters that were close to the edge.
There was another 24mm G motor that Gary used to make for dirt cheap called the G42. Great motor!
Isn't the G55 still on the cert list, good 'til the end of this year? I have a G55-10 from waaaay back that I need to build a rocket around. Especially now that I live in the desert!Originally posted by RoyGreen
I have a G55-5 in my grubby little hands right now (well, when I'm not typing...). I was going to fly it a few years ago in a LOC Stovi, but the pad fell over and busted the launch lugs off. Never got around to it again.
Imagine a motor that could fill an Alpha!
Someday, when I'm in the desert with nothing better to do, and no one to watch me violate the safety code, I'll build an Alpha to sacrifice, and fly this puppy !
Originally posted by jsdemar
Isn't the G55 still on the cert list, good 'til the end of this year? I have a G55-10 from waaaay back that I need to build a rocket around. Especially now that I live in the desert!
-John
Originally posted by Initiator001
The designation 'G42' was the result of a long set of motor testing trying to develop an 'E42', 'F42', etc., by Scott Pearce and myself. We were reading too much Douglas Adams back then.
Originally posted by uncle_vanya
[off topic] No such thing as "too much" Douglas Adams... [/off topic]
I know several have mentioned it... the G37 Ellis is a kick'n motor. I like the G20 even more but it's harder to find a rocket that is light enough for the G20 and also easy to recover.
Originally posted by Art Upton
Semroc Jaguars make great rockets for these motors.
I have one I've gotten back four times now.
Art
Originally posted by R_McMIllan
Do you mean the G20-7?
If you do then I suddenly have a perfect use for the G20-7s in my motor stash and the SLS Javelin that's on the bench.
Originally posted by Rick Lindsey
I've got a G20-7 that's waiting for a very calm, very clear day at a very large field to fly in an Aura .
-Rick
Originally posted by R_McMIllan
Do you mean the G20-7?
If you do then I suddenly have a perfect use for the G20-7s in my motor stash and the SLS Javelin that's on the bench.
Originally posted by Art Upton
They will fly great on the G20, the G37 and the G35 Ellis Motors.
The G20-7 will work fine in it.
Art
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