Note that OR can read many Rocksim files. I can definitely read that one, and it yields CP 24.6" from the front, *not including* the tower. The location seems to match the CP marking in the image at the right side of the page Kuririn linked to.If you need to find Open Rocket or Rocksim files check the libraries at EMRR first.
And by the way Open Rocket can read Rocksim files.
It's for an earlier model than the current but the external dimensions are the same, so the CP should also be the same. Assuming whoever drew it up did so accurately of course.
Later as you learn to use OR you can draw up your own files.
If this is the real kit...do not risk swinging it? It is delicate. If you are wondering about motors and which will give you a stable flight..ask this forum......by now hundreds of people have built it......flown it and they can tell you what motors they used and if they needed to add any weight. Just because everyone states..."hey do a SIM, does not mean you have to..." If people can supply their actual historical, personal knowledge.... then use it for recommended motors and added weight. And , YES if you want to...check out EMMR/rocketreviews.com for sim file. And looks like Neil gavev you the data.Thanks I have done the balance test with the cardboard but was told its not that accurate and you mention the swing test could you explain. Ok I don't really want to join a club just to get the formula to figure it out but maybe down the road. Thanks
THis is the opposite of how it's supposed to goCP above CG..
Aerotech F24-4, it comes in a 3-pack of the propellant kits:I could not find a aerotect F24-4 or and Estes E30-4. The estes site had a picture of them but no info on buying it the E30-4 and the Aerotech google did not show an engine that was labeled 24-4 so I will need further info where to find them? I saw a 24-40 so is this a 24-4? I'm not familiar with aerotect numbers yet.
What method do you use to determine CP? The Estes Mean Machine should be stable if built according to the instructions and with proper use of adhesives (No massive amounts of glue or extra weight in the back, no massive drippy heavy coats of paint) and flown on the recommended motors.Thanks again. I did a CP on the estes Mean Machine and it seems like cp is higher on this also so I put my camera on almost the nose or add weight to the nose, this does not make sense to me if its a designed rocket it should be stable out of the box not have to do measurements on it to then correct the stability? I guess that is part of the hobby?