12” Mega Punisher Build Thread

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tjsnakez

tjsnakez

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Ok exciting stuff happening. “The Anti Gravity Group” which consists of Braden Carlson, Matthew Myers, and myself will be doing a one week speed build on this project. I have been working behind the scenes the last 3 months making a 12” Punisher “kit”. C0EC9EF3-0B49-4727-880B-95B3F7389338.jpeg

This project started as a joke because Braden and I think Punishers are, in a way, the perfect rocket. Of course after we joked about it long enough, it eventually became a reality 🙂

This project means a lot to us because growing up in rocketry, Braden and I dreamed of building “the big one”. Looking in awe at the Gates Brothers, Hillbilly Rocketry, Wildman, and Wedge Oldham building massive projects by today’s standards, that were completely insane for the time.

-12” diameter, 16’ tall, and 200lbs on the pad.
-A central 98mm and six 75mm outboards
-First flight planned for Airfest

Braden will be making adjacent videos on the RocketVlogs YouTube channel to cover the build as well, so please subscribe to follow along If you haven’t already.

More to come! Stay tuned 🙂
 
Great work so far! Very nice hand cut parts.

If your group is going to be doing a lot of big, custom builds like this, I would highly recommend you invest in a CNC router with a table big enough to handle the parts you want. Hand cutting parts is cheaper, but, when you hand cut, you always introduce the possibility that some cuts along the way are going to be a millimeter or so off one way or the other. Those millimeters tend to add up on big projects. CNC takes the human error out of the equation, for the most part. Also, it is much quicker. Wood is particularly easy for a CNC machine. I am not sure how long it took you to layout the design for the rings and fins, build jigs, makes cuts on various machines, etc. But, looking at what you have there, I would estimate that it would take about 15-20 minutes to make those parts in Fusion 360 and maybe an hour to cut them all out on a CNC since they can all be cut with the same endmill. You could cut your foam to fit as well.

Just a consideration. If this is going to be your one and only custom build, then it is no big deal. But, if you plan to custom build a lot of parts out of wood, composites and aluminum, CNC is the way to go.
 
UPscaler said:
6400/5G is the max we could get in there.

However, a 6g case with a spacer and an M3700 loaded fits...

Braden
Click to expand...
Get the hole saw out and make more room /s.

It would be insane to do something like an O5280 and 6x M2245. You'd probably start running into stability problems though.
 
Neutron95 said:
Get the hole saw out and make more room /s.

It would be insane to do something like an O5280 and 6x M2245. You'd probably start running into stability problems though.
Click to expand...
At that point I think we'd be plenty into the ripping fins off range, haha.

Assuming the O5280 makes it more than four feet off the pad, that is. 😉


Braden
 
Neutron95 said:
Get the hole saw out and make more room /s.

It would be insane to do something like an O5280 and 6x M2245. You'd probably start running into stability problems though.
Click to expand...
If we really wanted to, we could easily make room for 6g cases in the future if needed. But honestly six M1315’s is more than enough for a good time and wallet hurt 😉
 
UPscaler said:
At that point I think we'd be plenty into the ripping fins off range, haha.

Assuming the O5280 makes it more than four feet off the pad, that is. 😉


Braden
Click to expand...
An O3400 would give up a bit of impulse but would save some money, and in true Gates brothers fashion would make all of the motors in the rocket use the same propellant.

I am really looking forward to seeing how this build goes. Do you have any plans for future launches beyond Airfest? LDRS next year would be pretty cool, but I don't think that the site would allow the use of a larger cluster. Maybe something with a few smaller Super Thunder motors could work.
 
mtnmanak said:
Great work so far! Very nice hand cut parts.

If your group is going to be doing a lot of big, custom builds like this, I would highly recommend you invest in a CNC router with a table big enough to handle the parts you want. Hand cutting parts is cheaper, but, when you hand cut, you always introduce the possibility that some cuts along the way are going to be a millimeter or so off one way or the other. Those millimeters tend to add up on big projects. CNC takes the human error out of the equation, for the most part. Also, it is much quicker. Wood is particularly easy for a CNC machine. I am not sure how long it took you to layout the design for the rings and fins, build jigs, makes cuts on various machines, etc. But, looking at what you have there, I would estimate that it would take about 15-20 minutes to make those parts in Fusion 360 and maybe an hour to cut them all out on a CNC since they can all be cut with the same endmill. You could cut your foam to fit as well.

Just a consideration. If this is going to be your one and only custom build, then it is no big deal. But, if you plan to custom build a lot of parts out of wood, composites and aluminum, CNC is the way to go.
Click to expand...
No arguing that CNC is the way to go for precision, but it’s way out of our budget. It took me a couple hours to make all the wood parts, so not really a big deal. And the fit is great on everything.
 
Neutron95 said:
An O3400 would give up a bit of impulse but would save some money, and in true Gates brothers fashion would make all of the motors in the rocket use the same propellant.

I am really looking forward to seeing how this build goes. Do you have any plans for future launches beyond Airfest? LDRS next year would be pretty cool, but I don't think that the site would allow the use of a larger cluster. Maybe something with a few smaller Super Thunder motors could work.
Click to expand...
We have plans for future launches assuming all goes well. This is meant to be a quality project and not a one and done.
Future launches will likely take place at Airfest due to proximity. (It’s being built in Kansas City)

And if it survives there will definitely be a 6xl flight in the future 🙂
 
tjsnakez said:
We have plans for future launches assuming all goes well. This is meant to be a quality project and not a one and done.
Future launches will likely take place at Airfest due to proximity. (It’s being built in Kansas City)

And if it survives there will definitely be a 6xl flight in the future 🙂
Click to expand...
Midwest Power #20 this year😀
 
Fins are in place, internal fillets are done and the fin can tube is glued in place. Next is fillets, then we're doing a layer of tip to tip fiberglass to really cement things in place.

Here's a fun picture of the Cert 3 XL that we're using as a drogue just because it's absurd that a chute this big is a drogue.

Braden
 

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UPscaler said:
Fins are in place, internal fillets are done and the fin can tube is glued in place. Next is fillets, then we're doing a layer of tip to tip fiberglass to really cement things in place.

Here's a fun picture of the Cert 3 XL that we're using as a drogue just because it's absurd that a chute this big is a drogue.

Braden
Click to expand...
That great first pic of the fincan is one of those images that once seen just keeps lingering in the mind...
 
Man I heard a quick mention of a big cluster upscale on a rocket blogs live deal a bit ago but there’s something so crazy about seeing how big that actually is in photos! Amazing build! I hope I can make it out to see the launch even if I can’t I can’t wait to see this monster fly!
 
tjsnakez said:
Ok exciting stuff happening. “The Anti Gravity Group” which consists of Braden Carlson, Matthew Myers, and myself will be doing a one week speed build on this project. I have been working behind the scenes the last 3 months making a 12” Punisher “kit”. View attachment 523337

This project started as a joke because Braden and I think Punishers are, in a way, the perfect rocket. Of course after we joked about it long enough, it eventually became a reality 🙂

This project means a lot to us because growing up in rocketry, Braden and I dreamed of building “the big one”. Looking in awe at the Gates Brothers, Hillbilly Rocketry, Wildman, and Wedge Oldham building massive projects by today’s standards, that were completely insane for the time.

-12” diameter, 16’ tall, and 200lbs on the pad.
-A central 98mm and six 75mm outboards
-First flight planned for Airfest

Braden will be making adjacent videos on the RocketVlogs YouTube channel to cover the build as well, so please subscribe to follow along If you haven’t already.

More to come! Stay tuned 🙂
Click to expand...
SIX 75mm omg this will be a monster :D ...
 
Each of the rings is secured between the fins with a countersunk wood screw and then the fins are covered with 9.5oz tip to tip glass. It's super heavy duty, so it's going to require some sanding, but we want it to be pretty bulletproof!

Last image is just the motor mount assembly because it's insane to look at!

20220620_090019.jpg20220619_231555.jpg20220620_085154.jpg
20220619_211856.jpg
Braden
 

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