MaxQ
Tripoli 2747
Winter's here...(feels like it anyway) - build time.
One of my favorite kits was the Estes Little Joe II - and having had fun with the Semroc re-release, I decided that I wanted to build something bigger.
I had originally planned for an 11.5 inch dia. project - but that would be rather heavy.
I would like something that I could fly locally on a cluster of BP motors with a central F or G.
I also wanted something a little bigger than Sheri's kit.
But it would have to be light weight...like "ultra" lightweight.
Many years ago I recall seeing a foam core space shuttle in Sport Rocketry...I think it was Matt Steele's.
If I didn't get too crazy with large motors I figured a well designed light weight structure, properly reinforced would handle the flight loads of a cluster of D/Es with a central F/G.
So I set about drawing up plans for the fin framework and a hand rolled 8.5" dia.poster board airframe.
The internal components would be foam core - reinforced with balsa sheet, basswood and in some places, fiberglass.
The airframe corrugations would be fun...I transcribed the details in the scale locations after rolling the airframe on sonotube.
View attachment LBJ -1a- rolled BT on Sonotube.JPG
View attachment LBJ - 2a - detail scribing.JPG
View attachment LBJ - 5a - Fins.JPG
View attachment LBJ - 4aa - Seven motor cluster.JPG
One of my favorite kits was the Estes Little Joe II - and having had fun with the Semroc re-release, I decided that I wanted to build something bigger.
I had originally planned for an 11.5 inch dia. project - but that would be rather heavy.
I would like something that I could fly locally on a cluster of BP motors with a central F or G.
I also wanted something a little bigger than Sheri's kit.
But it would have to be light weight...like "ultra" lightweight.
Many years ago I recall seeing a foam core space shuttle in Sport Rocketry...I think it was Matt Steele's.
If I didn't get too crazy with large motors I figured a well designed light weight structure, properly reinforced would handle the flight loads of a cluster of D/Es with a central F/G.
So I set about drawing up plans for the fin framework and a hand rolled 8.5" dia.poster board airframe.
The internal components would be foam core - reinforced with balsa sheet, basswood and in some places, fiberglass.
The airframe corrugations would be fun...I transcribed the details in the scale locations after rolling the airframe on sonotube.
View attachment LBJ -1a- rolled BT on Sonotube.JPG
View attachment LBJ - 2a - detail scribing.JPG
View attachment LBJ - 5a - Fins.JPG
View attachment LBJ - 4aa - Seven motor cluster.JPG