Estes Leviathan file

Does anyone have a open rocket or rock sim file for the estes leviathan they would be willing to share?

Thanks!
Z

I'm making one in OP when I get it done ill post it it will be slightly different tho, I added a baffle and extended the motor tube about 6 inches and a eye bolt for the shock mount. BTW I picked mine up at Hobby Lobby with a 40% off coupon! Now you cant beat that with a stick. all the G motors were gone, the F's were still there.

TA

Ditto on the 40% off coupon

thobin said:

I'm making one in OP when I get it done ill post it it will be slightly different tho, I added a baffle and extended the motor tube about 6 inches and a eye bolt for the shock mount. BTW I picked mine up at Hobby Lobby with a 40% off coupon! Now you cant beat that with a stick. all the G motors were gone, the F's were still there.

TA

Click to expand...

Which hobby lobby..... How much w/out the coupon...

Alex

Aksrockets said:

Which hobby lobby..... How much w/out the coupon...

Alex

Click to expand...

They were $60 at our Hobby Lobby, so $36 with the 40% coupon. Not a bad deal.

In layton.

Here is the OP file I don't think I missed anything.

TA

View attachment Estes Leviathan.ork

Awesome thanks

thobin said:

I'm making one in OP when I get it done ill post it it will be slightly different tho, I added a baffle and extended the motor tube about 6 inches and a eye bolt for the shock mount. BTW I picked mine up at Hobby Lobby with a 40% off coupon! Now you cant beat that with a stick. all the G motors were gone, the F's were still there.

TA

Click to expand...

Hello thobin new member here. I myself picked up a Leviathan because I thinks its time to finally move up from E motors. I've been learning about baffles here lately and am currently testing it out on a smaller rocket. That being said I would like to include one on the Levi and I was wondering if you had any pictures of how you incorporated yours into the rocket?

Sure I will post some pictures to what I have done. I did this one with only adding one bulkhead and one extra baffle tube. Well I did lengthen the motor tube as well.

TA

Here is my OP file it kinda shows what I did. I didn't want to figure out a new baffle or make a bunch of centering rings and bulkheads. I just wanted to use what its came with as much as I could without fabricating a ton of new parts or buying more stuff. The disadvantage of this is I cant fit any motor over 5 grains in the rocket, it runs into the baffle where I have it located. As you can see I also added a eye bolt for the shock cord mount too, just make sure if you do that that you tie the shock cord before you attach the two tubes together.

I just finished my this weekend here are some pictures.


TA



View attachment lev2.jpg

View attachment lev3.jpg

View attachment lev4.jpg

View attachment LeviathanMOD.ork

Stunning paint job! Thanks for the help and the tip with the shock cord!

One thing according to the numbers in Open Rocket the 24 inch chute is kinda small and when you add the weight of a baffle that speeds things up at landing. Most of the time I like to keep it at or under 20fps, especially if the fins are going to take the brunt of the hit. This drops at about 22 to 24 fps depending on the motor I run the SIM with, which really isn't all that bad. Just faster than I like.


TA

Saw you launch vids in the other thread you started. Again awesome job! Just curious did you end up upsizing the chute or did you stick with the stock 24"?

:bang: nevermind...I was so excited to click your video link that I completely passed right over the part where you put your 28" chute in the rocket. One last question. I saw a lot of glimmer from your rocket on the way down. Was that the sun reflecting off of your rocket or do you add some kind of foil in your recovery to help find your high flying rockets?

It must have been just the white flashing back i didnt add anything to make it do that. I'm sure i only made around 1400 feet on the last flight with the G64-7w and it landed pretty close to the flight line. If I went with a larger motor say an H i would probably put the smaller chute back in anything higher than 1500 and you are going for a hike to retrieve it.

TA

Thats a colorful rocket.

Well I followed along with your LeviathanMOD file thobin and I built my baffle/coupler last night. The only differences being that I didnt lengthen the motor mount tube and for my baffle tube I used an old destryed Vagabond's motor mount. I noticed when I look down the baffle from the top I can see into the motor mount (see pic) As I'm still new with baffles and trying this style for the first time I have to ask...is this ok or will this midigate the effect of the baffle altogether and just send the hot air straight up the other tube without any kind of flow resistance to cool it off.

You need to force it to change direction it loses heat but not pressure, its like water it will take the path of least resistance. You are basically routing the hot gases around until they are cooled down enough to not melt the chute. And deflecting the hot particles so they don't come in direct contact with recovery. So if you can see a direct path to your motor tube it probably wont reroute the hot gasses enough to do the job.

TA

Forgot to attach the picture...:eyeroll:

Ah Ok...I'll devise some kind of deflecter under the exit tube to try and re-route the air a bit more.

Stainless steel dish scrubby, would work. Just put it in the vent tube. Push it almost all the way down till some of it comes out the end of the vent tube then stop so its half in and half out. The bottom of the scrubby will expand back out a bit and keep the ejection charge from shooting it out of the vent tube. That should cool everything nicely and do basically the same thing.

TA

Good idea! I've still got some scrubbies left over from a previous baffle I made. Thanks

I was able to get my Leviathan up in the air today. https://www.youtube.com/watch?v=zG0-NdyDRX8&feature=youtu.be I'm glad I flew it on a G40 instead of a G80 as it was a bit windy and I had to test my tree climbing skills. We also got to make a maiden flight on my scratch built 3" x 80" 3xE9 cluster. It flew perfect strait as an arrow. I was really pleased being that it was both my first cluster rocket and also my first scratch build.

The tree monster strikes. Congrats on the scratch cluster, its always good when a plan comes together.:w:

TA

https://www.rocketreviews.com/estes-leviathan-by-gene-wolski.html

https://www.rocketreviews.com/rocksim-for-leviathan-4178.html

https://www.rocketreviews.com/what-if-leviathan-7755.html

Hey thobin do you have any techniques as to how you go about masking the curve in paint in the middle of your bt? I've got an idea for a similar paint scheme, but I just cant seem to get that curve right.

If you want the curve to be a perfect circle just draw out a circle with a compass on a piece of paper and use that as a pattern. If you want and oval shape use a French curve template to get one side then just fold it in half and cut it out like you would if you were cutting out a heart, that way both sides will match. After I get the shape I want I'll mask off the area that I want the curve and then lay the circle pattern and or shape over the masking tape and trace out the shape with a razor blade. Then you peel off the side of the tape you want to paint. Cutting with a razor blade does two things, one obviously it cuts your shape out and two it creates a small groove/cut in the first layer of paint that will act as barrier, that the next coat of paint will rarely cross and will leave you a nice sharp line.

Good luck, take your time let your paint dry dont mask off anything that hasnt had at least 3 days to dry, I wait a week if I have to mask stuff off.


TA

Thanks! I ended up doing something similar. I used a waist measuring tape and measured the circumferance of the body tube. I then went into Microsoft Powerpoint and drew a circle with the measurements and printed it out. Turned out pretty good. As soon as I finish the other half of the rocket I'll post some pictures.

You can draw circles and ovals in Open Office Draw and Microsoft paint too. Iv done a few complex curves and patterns in Open office Its a good way to make them.

I have yet to do it, but there are quite a few preset shapes you can select from in Open office you could get some really cool patterns to paint with that.

TA