Ellis Mtn 24mm G37 has anyone used one yet?

[astronboy]

So, has anyone purchased an Ellis Mtn 24mm G37 yet?

I am building a large mid power rocket right now, and am thinking about using this motor in it...

Fred

 

[Stymye]

Fred, I just bought one because it has a 3 sec burn !
I sure would like to have a thrustcurve(and for the new G-20-3 also)
looks like it would be great in a beefed up estes kit like the big v2 or phoenix !

I plan on flying the G37 tomorrow ..I'll give a report here

 

[Bill]

Originally posted by astronboy
So, has anyone purchased an Ellis Mtn 24mm G37 yet?

I am building a large mid power rocket right now, and am thinking about using this motor in it...

Fred

A friend flew a seriously overbuilt Estes Patriot on a single use Ellis G motor at NSL. I do not know if it was 24mm or 29mm If not for radio tracking, he would never have recovered it.

Photo of the boost can be seen at www.aarg.org/nsl/gee-sun/pages/page_21.html


Bill

 

[OKTurbo]

Here's the thrust curve...

https://www.tripoli.org/tmt/new_motors/EM G37 jun 09.pdf

The G20-3 is 29mm. Here's the curve for it too...
https://www.tripoli.org/tmt/new_motors/EM G20 jun 09.pdf

Wow! 5.5 sec burn on the G20.

 

[jetra2]

I betcha that the G20 would kick some serious butt in an Aerotech Mustang...droool!

Jason

 

[Bowhunter]

OHHHH long burn Ill have to stick 2 of them in my CRAMRAAM

 

[Stymye]

the downside is that they only offer a 3 second delay !

 

[Bowhunter]

Mine blew out the front of the motor about 15 feet off the ground sending my rocket to the ground in a ball of fire here is a pic of the blow out

 

[corpse]

Ellis Mtn 24mm G37 were can i get some ?

 

[OKTurbo]

Bowhunter,

Have you e-mailed or talked to Ellis Mountain about your failure?

I've been wanting to try one of these long burn 24mm's, but not if its going to torch a rocket!?!? What ignitor did you use? (ignitor stuck in nozzle...CATO)

Corpse....Giant Leap sell them. https://www.giantleaprocketry.com/hpdefault.asp
You can also get a list of vendors on the Ellis Mountain web site.
https://www.geocities.com/ellismountain/

John

 

[corpse]

thanks

 

[havoc821]

that is an odd loking flame on the Patriot launch. Itis really long, skinny, and curvy/wavy. Is it supposed to be like that?

 

[GL-P]

How does a G37-10 on an Aura sound? Frightful, I agree! A little glass on the fins and it's ready to go. I launched my Aura on an Ellis Mountain 24mm long burn F today. It was amazing! Something like 2500 feet to 3000 feet. I was getting close to our waiver!

 

[GL-P]

I forgot. I had no problem with the F when I used a Firefly igniter. They have extra small heads to fit in those tiny nozzles. They were 10 for $15. I can't remember where I got them. I hope someone can fill me in.

 

[RocketboyG80]

Have you already put glass on the Aura's fins? If not it's not really necessary. A G37 has a long burn but the thrust is rather minimal.
Although I can't help you with the Firefly igniters, sounds familiar though.

 

[GL-P]

I haven't glassed the fins yet. I know it's a long burn but I was thinking of just 1 layer of 3/4 oz cloth since an Aura doesn't have much of a tab on the fins. I also want to protect the fins on the way down under streamer. I got my igniters at LDRS 23. They were suggested for the motor.

 

[Jerry Irvine]

Originally posted by Bowhunter
Mine blew out the front of the motor about 15 feet off the ground sending my rocket to the ground in a ball of fire here is a pic of the blow out

Thanks for the report and the pic.

 

[BlueNinja]

no i havent seen one but yesterday I saw one used in a Vaughn Bros. Extreme 24


needless to say, the owner was not expecting to get it back.

 

[SpartaChris]

So what does it mean when the chart says the motor is 36% G? The chart is at https://www.geocities.com/ellismountain/su.html

-Chris

 

[DynaSoar]

Originally posted by SpartaChris
So what does it mean when the chart says the motor is 36% G? The chart is at https://www.geocities.com/ellismountain/su.html

-Chris

When an engine spec says it is X% of Y, it means the power of that motor is X% of the maximum power alloted to motor type Y.

In this case, the engine carries 36% of the maximum power that could still be classified as a G motor.

 

[SpartaChris]

Ahhh, ok, that makes more sense now. Thanks!

-Chris

 

[DynaSoar]

Originally posted by astronboy
So, has anyone purchased an Ellis Mtn 24mm G37 yet?

I am building a large mid power rocket right now, and am thinking about using this motor in it...

Fred

I'm having trouble finding people who'll actually sell and ship them, especially the HPR motors. They give different reasons.

 

[SpartaChris]

What reasons do they give for not selling/shipping that motor?

-Chris

 

[DynaSoar]

Originally posted by SpartaChris
What reasons do they give for not selling/shipping that motor?

-Chris

Not shipping them at this time.
Not shipping hazmat at this time.
(Similar to these two: selling them at launches only)
Requires BATF license.*

Some just don't list the S/U at all, but that's different.

I checked with the listing of dealers from E.M.'s home page.
I also inquired directly.


*This one bother me most, though I suspect the rest have similar reasons: they're afraid of BATF coming down on them despite the court ruling re: S/U motors exempt as "propellant actuated devices".

 

[astronboy]

I ordered some G37-6s from Als Hobby two weeks ago. I called first to be sure that they were in stock. They were very helpful.

https://www.alshobbyshop.com

Phred

 

[blakbird]

I used the Ellis G37 in my LOC Stovi at XPRS last month. It was absolutely the perfect motor choice for that rocket. I built it with the 7-24mm mounts, so if you want to fly on just one the choices of 24mm motors are few. I've got some RMS F39's as well. I liked the G37 so much I got a couple more.

I have some pictures of the flight which start at the URL below:
https://www.e2scopes.com/rockets/XPRS/source/stovi1.html

Eric Albrecht

 

[r1dermon]

GL-P, the AURA is under 1lb, i thought there was no waiver required...it could go 50,000ft.
on a G-35 LOC says it will do 4500ft. im planning on flying my AURA on F20-7W's at the next CMASS launch. the only way i'd glass the AURA is if i was using something like a G80 or better. short burn, high thrust.

 

[GL-P]

i was using a small F motor in my Aura so it was pretty low

 

[r1dermon]

i think it was doctor rocket who offered a 29mm I reloadable casing....now THAT would be NUTTY in an 8oz aura.