I recently picked up a bunch 13mm motors. This model would be a good way to burn through some black powder.
The Estes Time Warp has three BT-5s motor mount tubes (left side, in yellow) joined to a BT-55 (gray tube). A 55/50 adapter joins to a heavy walled BT-50 (unusual) and finally the gray nose cone.
Mentioned earlier, a heavy wall BT-50
The new self-adhesive Estes shock cord mount
A laser cut 3/32" thick balsa sheet
The four centering rings -
The pairs are laminated to make two thicker rings.
That small center triangle is very close with not much to hold it onto the assembly.
Cool. Grabbed one of these at their end-of-year sale, will be building it this year. Looking forward to this one.
ReplyDeleteHave been thinking about whether to add some sort of positive motor retention, most likely an M2 threaded rod in the center of the motor cluster with a nut and washer screwed on.
That's how I built my Rocketarium 13mm Trident - it works well though I did add a commensurate amount of nose weight.
DeleteActual water-slide decals. Two thumbs up, Estes!
ReplyDeleteSurprised at the heavy wall BT50 tube as well - I wonder if it's an availability thing rather than an engineering choice? It's probably the least critical tube in the whole rocket.
ReplyDelete