has anyone cloned an Estes mirv here?

The Rocketry Forum

Help Support The Rocketry Forum:

SirNomad

Well-Known Member
Joined
Aug 27, 2015
Messages
59
Reaction score
1
I always thought that Estes Mirv was a cool design, but unfortunately it seems to be out of production. I'd be interested in ideas on how to clone this bird. Anyone have any?
 

Zeus-cat

Well-Known Member
Joined
Mar 14, 2009
Messages
4,643
Reaction score
859
I just checked eRockets and they have 3 in stock. And they are discounted 50% to $14.99
 

Lowpuller

Well-Known Member
Joined
Nov 23, 2013
Messages
2,230
Reaction score
14
I have one and it is a cool Rocket. Relatively expensive to shoot and takes special paint to not melt the foam
 

Daddyisabar

Oddrocs Rule!
TRF Supporter
Joined
Jan 23, 2009
Messages
4,848
Reaction score
452
Location
Littleton Colorado
With the plastic funneling it would need some high end 3 D printing to clone. Just build a stacked stager from a number of plans out there. Yes, the whole idea of the kit is to burn lots of motors. Motors are where the money is at! I melted the foam a bit with Krylon for the heck of it and it still turned out cool with a rough surface.
 

GlenP

Well-Known Member
Joined
Oct 4, 2014
Messages
2,233
Reaction score
526
Here is another MIRV-type option, the Seattle Rocket Works MIRV Gryphon.
https://plans.rocketshoppe.com/srw/srwMG/srwMG.htm

I made a variation of this where the booster is a single 18mm engine that gap-stages/vents up to the 4 13mm sustainers. (I guess it could fly with only 2 sustainers as well.) I have not finished painting yet, and not flown it yet. I extended the booster body tube with a boat-tail and added some length to the chord of the booster fins, from the original design. I also borrowed from the Estes MIRV design the central dowel that holds the sustainers together on individual lugs.

IMG_0535.jpg
IMG_0536.jpg
IMG_0537.jpg
 

snrkl

Well-Known Member
TRF Supporter
Joined
Apr 11, 2017
Messages
1,368
Reaction score
208
I'm mentally adding this to my build pile. 😜
 

BABAR

Builds Rockets for NASA
TRF Lifetime Supporter
TRF Supporter
Joined
Aug 27, 2011
Messages
8,621
Reaction score
3,331
Here is another MIRV-type option, the Seattle Rocket Works MIRV Gryphon.
https://plans.rocketshoppe.com/srw/srwMG/srwMG.htm

I made a variation of this where the booster is a single 18mm engine that gap-stages/vents up to the 4 13mm sustainers. (I guess it could fly with only 2 sustainers as well.) I have not finished painting yet, and not flown it yet. I extended the booster body tube with a boat-tail and added some length to the chord of the booster fins, from the original design. I also borrowed from the Estes MIRV design the central dowel that holds the sustainers together on individual lugs.

View attachment 326870
View attachment 326871
View attachment 326872
Love it. Hope you do well with a C booster, I found the Estes MIRV extremely underpowered. An 18 mm D Might work.
 

mccordmw

Well-Known Member
Joined
Jan 18, 2016
Messages
1,020
Reaction score
49
Location
St. Louis, MO
done

https://www.rocketryforum.com/showt...aunch-and-Staging-Cerberus-III&highlight=mirv

also built and flew the real MIRV. YMMV, but for me worst rocket ever.

Extraordinarily underpowered booster.
I currently have a MIRV in my fleet. I'll second the power issue. If you buy one, don't use a B6-0 for the booster like the package says as an option. Go with the second option of a C6-0. Even that is a bit iffy. Not to be flown in anything but calm winds.

Oh, and don't paint as per the picture. Paint the darts something bright like silver or white. They're super hard to find in grass.
 

GlenP

Well-Known Member
Joined
Oct 4, 2014
Messages
2,233
Reaction score
526
Love it. Hope you do well with a C booster, I found the Estes MIRV extremely underpowered. An 18 mm D Might work.
Good point. I think I built this one lighter weight than the stock plans from SRW, and four A-engines in their booster should roughly be equivalent to the impulse of 2 B's or 1 C in this version. The cardstock tubes are probably lighter than the plastic/foam Estes MIRV, and within the 4 oz weight limit of a C6-0 when fully loaded for launch. I just have a base primer coat on there now, and may end up sanding most of that off before final color coat painting.
 
Top