#21
|
||||
|
||||
Quote:
Danny, One thing I noticed about original BT-30 (and the BT-40 repros that Quest used in their 50th Anniversary MMI Aerobee-Hi) weren't always precisely round. Is that true of the original BT-40 you have?
__________________
Roy nar12605 |
#22
|
|||
|
|||
When I was REALLY just starting out, eartly 1971 maybe, and eight years old, I found one of those silver spin fin units. The "can" had split, melted open. I followed the directions in the Design Book to roll a tube (horrible, lumpy) and somehow got some soft wood to make a lumpy carved cone.
__________________
NAR #27085 - Oregon Rocketry - SAM |
#23
|
|||
|
|||
Maybe if enough people ask Firefox they'll stock some of their BT-40 equivalent tube *uncut* and we can make some Dirty Birds!
__________________
NAR #27085 - Oregon Rocketry - SAM |
#24
|
|||
|
|||
Bt-40
Quote:
NO Need---I stocked up on those before semroc was sold. ...........
__________________
ENGINE COSTS ARE " OUT OF SIGHT " ..... |
#25
|
|||
|
|||
Bt-40
Quote:
Actually, YES. These tubes are the Primitive tubes they started out to be. There is a slight 'oval' in the tube, but hardly noticeable--especially if they are used to build a kit. If Quest did this in the Repro Aerobee Hi kit, I applaud them for the accuracy in reproducing a 'true' as possible replica ! These old tubes are 1 of a kind & a joy to have. Thanks, Danny.
__________________
ENGINE COSTS ARE " OUT OF SIGHT " ..... |
#26
|
|||
|
|||
Agreed
Quote:
Ha, Yes--Live & Learn. But those were the 1st, and from 1960--when most rockets were made from fire works parts ! I don't think they were designed to last long--just an early idea by G Harry & the rest....... Any Plastic fin unit exposed even 'Near' the exhaust, will melt some. Danny.
__________________
ENGINE COSTS ARE " OUT OF SIGHT " ..... |
#27
|
|||
|
|||
Oval Tubes
Quote:
While not too pronounced, here's a pic of some BT 30 & 40s. Hope Pics. are clear,, but they are out of round, some. BTW--these are actually the earlier BT 1 & 2 Tubes. Danny.
__________________
ENGINE COSTS ARE " OUT OF SIGHT " ..... |
#28
|
||||
|
||||
Quote:
Yes, everything was reproduced fairly exact except the nose cone (made of balsa instead of maple or vinyl) and the box (though they tried to make it look sorta like the old box. Inks today are too bright!)
__________________
Roy nar12605 |
#29
|
||||
|
||||
Yesterday I scored some vintage rockets and engines on Craig's List and in the box was the mentioned fin can and a small piece of BT-30 or 40. I found the right size cone from the bag the fireworks vendor gave me and viola: a Sky Bird...or, reasonable facsimile thereof.
__________________
Living life on the edge...launching C's on a B field. Last edited by Joe Shockcord : 07-11-2015 at 09:43 AM. |
#30
|
||||
|
||||
That is really cool!!....from the Jurassic world of model rocketry.
|
Thread Tools | Search this Thread |
Display Modes | |
|
|