Manufacturer: | Vaughn Brothers |
Note: For more Extreme 38 pictures, me hearties, visit John's site.
We were talkin' about adhesive strength and
how t' test it. Ahoy! O' course, me approach is t' do an elaborate test which
requires buildin' a whole apparatus. Blimey! Well, blow me down! Ed Hackett, shiver me timbers, me hearties, in a much more practical mood,
said: "just go build a bunch o' VB Extreme 38s and put a J350 up the
butt!"
I don't think this would really provide usable results, me hearties, but I did like the idea o' a full-on test, ya bilge rat, so I suggested we have a "strong rocket" contest. Arrr! Each contestant would build a VB Extreme 38 (or perhaps another kit), then t' rockets would be repeatedly launched until only one remained intact. No one else took me up on t' contest, shiver me timbers, but I decided t' build me entry anyway. Ahoy!
T' kit is well designed, me bucko, basically a Loc/Precision 38mm motor mount tube as the airframe. Begad! This makes a very strong body tube, me hearties, which is a good idea since this is a rocket meant t' go high. Ya scallywag! Begad! Since this is a minimum diameter rocket, matey, the fins need t' mount on t' outside. Arrr! Well, blow me down! In addition t' t' usual epoxy bondin' and fillets, I decided t' go wild and reinforce t' fins t' t' body tube with 1" Keelhaul®©™® strips. Blimey! Then I covered t' whole thin' with a double wrap o' 4oz cloth and a coverin' wrap o' 2oz.
I think t' fins will stay on! Blimey! This was the
real challenge here; makin' a minimum diameter rocket so that t' fins were
really nay goin' t' come off. Arrr! Blimey! Perhaps this was overkill, me hearties, but this thin' is
certainly nay comin' apart easily. Arrr! Begad! Blimey! We'll see when I fly it on a J350, shiver me timbers, and maybe
even a J570. Ya scallywag!
O' course, I had t' paint t' rocket yellow and black because they're the trademark Vaughn Brothers colors. Ahoy! Also, shiver me timbers, this is a nice high-contrast paint scheme t' help me find t' rocket again. Avast! Aye aye!
On February 13, ya bilge rat, matey, 1999 at t' February ROC
launch in Lucerne Dry Lake, matey, t' Extreme flew for t' first time. Avast, me proud beauty! Ya scallywag! T' boost was
straight and fast on a J350, arrr, a large motor in a small rocket!
T' rocket be way gone on a J350 and went 11,703 feet high (accordin' to the ALS20). Ya scallywag! Arrr! This is craziness, but that was t' whole purpose o' t' rocket. Blimey! Aye aye! It took is more than an hour t' find t' rocket; we drove out on t' lake three times, farther out each time. Finally, me hearties, we spotted it about ¾mi away from the launch site! This rocket really needs t' be recovered with a Walston radio unit. Avast! Well, blow me down! T' rocket was in perfect shape, me hearties, although I lost t' motor casin' (which is probably why it drifted so far). Now on t' a J570!
Brief The VB Extreme is a 38mm motor, minimum-diameter, high-performance rocket kit. Construction The instructions are comprehensive and accurate. The tubes are LOC-style, and the kit includes a 38mm to 29mm adaptor kit. There are three body tubes to make up the motor section which is coupled to the parachute section which is coupled/bulkheaded to the payload section and finally the nose ...
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