This project evolved out of a thread started by modeltrains on April 23rd in the Watering Hole and can be found here:https://www.rocketryforum.com/showthread.php?53052-Rockets-from-album-and-45-single-covers
After some discussion by the participants, I put together this design in RockSim 9 that comes pretty close to the shape of the rocket found on the cover the single.
I realize that there are accomplished scratch builders here, but I thought I might do this as a step by step for those who are starting out that might find some of my methods useful.
I began by ordering the stock parts I needed through BRS Hobbies https://www.brshobbies.com/ (My apologies to them, I think I have referred to them in other posts as BSR) and a custom turned nose cone and transition from Excelsior Rocketry https://www.excelsiorrocketry.com/ The lower primary tube is based on a BT-60 with a four inch balsa transition into a BT-50.
The BT-60 needs to be cut to a 10 inch length so what I do, is make tick marks around the tube and then use label making tape also as marking guide and a backstop for the X-Acto blade.
Using the tube marking guide as a cradle I slowly rotate the tube as I allow the blade tip to scribe and gently cut the tube. After several revolutions you end up with a clean and even cut.
After you remove the label tape you will notice that it has stripped-off the glassine surface. That's okay, I ll be sanding most of this off later when filling tube seams. Plus it gives the primer better surface to adhere to later as well.
Repeat the cutting process for the BT-50. You will need a 3 inch section of this and when finished, you will have the two main tubes. We still have five more tubes to cut for the powered outboards and the motor mounts so if you decide to build this rocket you will have plenty of practice.
Now you can dry -fit the nose cone and transition and admire what you have so far. In this state, the rocket is a little over 24 inches in length. The addition of the fins later will give it an additional 2 inches to its overall height.
More to come.
Steve
After some discussion by the participants, I put together this design in RockSim 9 that comes pretty close to the shape of the rocket found on the cover the single.
I realize that there are accomplished scratch builders here, but I thought I might do this as a step by step for those who are starting out that might find some of my methods useful.
I began by ordering the stock parts I needed through BRS Hobbies https://www.brshobbies.com/ (My apologies to them, I think I have referred to them in other posts as BSR) and a custom turned nose cone and transition from Excelsior Rocketry https://www.excelsiorrocketry.com/ The lower primary tube is based on a BT-60 with a four inch balsa transition into a BT-50.
The BT-60 needs to be cut to a 10 inch length so what I do, is make tick marks around the tube and then use label making tape also as marking guide and a backstop for the X-Acto blade.
Using the tube marking guide as a cradle I slowly rotate the tube as I allow the blade tip to scribe and gently cut the tube. After several revolutions you end up with a clean and even cut.
After you remove the label tape you will notice that it has stripped-off the glassine surface. That's okay, I ll be sanding most of this off later when filling tube seams. Plus it gives the primer better surface to adhere to later as well.
Repeat the cutting process for the BT-50. You will need a 3 inch section of this and when finished, you will have the two main tubes. We still have five more tubes to cut for the powered outboards and the motor mounts so if you decide to build this rocket you will have plenty of practice.
Now you can dry -fit the nose cone and transition and admire what you have so far. In this state, the rocket is a little over 24 inches in length. The addition of the fins later will give it an additional 2 inches to its overall height.
More to come.
Steve