Bruiser
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- Jun 7, 2018
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I am starting a build of said rocket, but as with all my builds this will not be done per the instructions. I will be building it with a removable engine mount so I can have a choice of powering it with a single 24mm motor or a cluster of 18mm motors.
I got the idea from Chris Michielssen's blog here: https://modelrocketbuilding.blogspot.com/search?q=centurion I also studied some other Semroc designs that featured removable engine mounts so you can say the design I am using is definitely Semroc inspired.
Earlier today I applied cwf to the body tube and I cut out the slots for the ttw fins. They are not your typical ttw fins as they are not glued to the motor mount tube. They go thru the wall and engage the centering rings on the motor mount tube to hold the motor mount in the rocket. I didn't feel balsa would be up to that task so I cut out some basswood fins.
I also started cutting out some ply centering rings for the 24mm mount. I still need to open up the inside for the ST-9 motor tube.
Once I get the parts finished up I'll post some pictures.
-Bob
I got the idea from Chris Michielssen's blog here: https://modelrocketbuilding.blogspot.com/search?q=centurion I also studied some other Semroc designs that featured removable engine mounts so you can say the design I am using is definitely Semroc inspired.
Earlier today I applied cwf to the body tube and I cut out the slots for the ttw fins. They are not your typical ttw fins as they are not glued to the motor mount tube. They go thru the wall and engage the centering rings on the motor mount tube to hold the motor mount in the rocket. I didn't feel balsa would be up to that task so I cut out some basswood fins.
I also started cutting out some ply centering rings for the 24mm mount. I still need to open up the inside for the ST-9 motor tube.
Once I get the parts finished up I'll post some pictures.
-Bob