Hello All,
I thought I would check with the experts on this...
I am using BT80's to build my first scratch to about 30 inches total length. My fins have a root edge of 5 inches and the height peaks at 3" for an inch and then steps down at two points. I plan to mainly use D12's and expect under 600ft with my configuration. I have a relatively small field to launch from, so I added a little more drag and stability (1.6 on a D12) to the build.
Now...I was thinking that if I get a chance to launch it at a launch event, I might want to stick something a little more mighty in there. Even an E9 would give some good altitude, it appears. Then I was thinking, well maybe I might want to go a little more. I have never used anything bigger than an Estes D12. I figured I would at least make the motor mount long enough for the E9. I am clueless about non-Estes motor configurations though, so I don't know what an Aerotech e15 looks like, or if it will work in there. I know the size matches up. I need to research that more.
Because it has a large root, am I fine with my normal double glue joint surface mount or should I got TTW? I would have to create a jig of some sort to cut the slots as my skills have just now reached a point where I can cut a straight line on paper with a metal ruler. Yep...took 45 years for that.
Also, I am considering 3/32" basswood (never used it before) as I found some really nice stock here locally and bought it. I also have 1/8" balsa, but it was their last piece, and it is not great... I would probably need to paper them to get a good finish and have them as strong as I like. The balsa is pretty weak at my local Hobby Lobby.
I also plan to build my first baffle. I plan on building it in the coupler that ties the second tube at the top, using 3 half-circle pieces made of card-stock and epoxy, mounted 180 degrees each step.
I have had this nose here for decades and am finally going to put it to use. I have no idea where I got it from. It has never been painted and has yellowed some over the years.
Thanks.
I thought I would check with the experts on this...
I am using BT80's to build my first scratch to about 30 inches total length. My fins have a root edge of 5 inches and the height peaks at 3" for an inch and then steps down at two points. I plan to mainly use D12's and expect under 600ft with my configuration. I have a relatively small field to launch from, so I added a little more drag and stability (1.6 on a D12) to the build.
Now...I was thinking that if I get a chance to launch it at a launch event, I might want to stick something a little more mighty in there. Even an E9 would give some good altitude, it appears. Then I was thinking, well maybe I might want to go a little more. I have never used anything bigger than an Estes D12. I figured I would at least make the motor mount long enough for the E9. I am clueless about non-Estes motor configurations though, so I don't know what an Aerotech e15 looks like, or if it will work in there. I know the size matches up. I need to research that more.
Because it has a large root, am I fine with my normal double glue joint surface mount or should I got TTW? I would have to create a jig of some sort to cut the slots as my skills have just now reached a point where I can cut a straight line on paper with a metal ruler. Yep...took 45 years for that.
Also, I am considering 3/32" basswood (never used it before) as I found some really nice stock here locally and bought it. I also have 1/8" balsa, but it was their last piece, and it is not great... I would probably need to paper them to get a good finish and have them as strong as I like. The balsa is pretty weak at my local Hobby Lobby.
I also plan to build my first baffle. I plan on building it in the coupler that ties the second tube at the top, using 3 half-circle pieces made of card-stock and epoxy, mounted 180 degrees each step.
I have had this nose here for decades and am finally going to put it to use. I have no idea where I got it from. It has never been painted and has yellowed some over the years.
Thanks.