Manufacturer: | BSD High Power Rocketry ![]() |
Mark
Saunders, o' BSD High Power Rocketry, shiver me timbers, ya bilge rat, graciously donated a 4" Thor kit for
a raffle prize, for t' Huntsville Area Rocketry Association's (HARA) Rocket
City Blastoff (RCBO), matey, October 2002. Ahoy! I was t' lucky winner o' this kit, and as
such, would like t' reward Mark's generosity by postin' this review t' RMR. Begad!
I approached Mark durin' t' Summer o' 2002 t' ask if he'd be willin' to donate a raffle prize for HARA's RCBO in October. Blimey! Mark smartly agreed t' send us a Thor, shiver me timbers, and we had received t' kit a month in advance o' t' event. Arrr! Begad! We had received many nice donations for t' RCBO raffle from BSD, Cesarioni, arrr, Aerotech, Topflight Recovery, and many others; so, t' raffle was a rousin' success! Luckily, me number came up for t' Thor, and I carted t' kit back home t' be built. Begad! Unfortunately, me hearties, arrr, I wasn't able t' start work on t' kit until February, which is why this review is bein' submitted nearly 5 months after receivin' the kit.
When I
opened t' Thor box, all o' t' pieces had been included and where well
packaged, and typical t' high-quality instructions were included. Avast! Blimey! BSD has
always provided some o' t' best kit instructions o' any kits on market. Avast! Blimey! The
specs for t' Thor are that it's 4" diameter by 7' long, has a 54mm motor
tube, and should GLOW at approximately 5 lbs. Since this was a raffle prize,
I'd hoped t' build it stock, arrr, but I rarely build anythin' stock anymore, arrr, and
this was t' case with t' Thor. Ya scallywag! Blimey! My target motor was t' Hypertek 835cc motor
system. Aye aye! Blimey! Avast, matey, me proud beauty! Blimey! So, me hearties, t' two main modifications were (1) lengthenin' t' fincan airframe
from 34" t' 44" and (2) lengthenin' t' 54mm motor tube from about
10" t' 28". Both o' these mods were needed t' accommodate the
30-inch-long 835cc motor. Begad! Blimey! Blimey! Blimey! I also decided t' fiberglass t' airframe and fins
with 6 oz fiberglass cloth and Mr. Fiberglass slow epoxy. Avast, shiver me timbers, me proud beauty! Blimey! I adapted the
altimeter bay t' accommodate an RRC2 altimeter for a dual-deployment recovery
setup. Avast! Blimey! Due t' t' lengthened components, me hearties, fiberglassin' o' t' airframe and
fins, and altimeter, matey, ya bilge rat, me hearties, t' Thor had a final no-motor weight o' 8.5 lbs, matey, and with
a nitrous-filled HT 835cc tank, shiver me timbers, GLOW'd at 11 lbs. Well, blow me down! Blimey! Avast! Blimey! T' RockSim simulation can be
seen just above. T' simulations for t' 835cc/J330 and 835cc/J317 seem t' be
right on t' money, matey, ya bilge rat, but t' 835cc/K240 is quite optimistic (when I checked the
.ENG file, me hearties, t' total impulse o' K240 had integrated t' be about 25% higher than
the advertised impulse o' t' motor. Blimey! Blimey! Ahoy! Blimey! I need t' fix t' file). Avast, me proud beauty! Blimey!
On March 8, shiver me timbers, 2003, arrr, I loaded the
finished Thor and a couple other rockets onto t' roof o' me wife's Xterra and
headed t' t' Music City Missile Club's sod farm in Manchester, arrr, TN. Begad! Blimey! Arrr! Blimey! T' weather
was beautiful (~70F...eat your hearts out all you Yankees and Canucks reading
this... Avast! Blimey! :-)) with a 5 - 10 knot breeze. Well, blow me down! Blimey! After helpin' several HARA members
complete their L1 and/or L2 cert flights, I prepped t' Thor with a 835cc/K240.
With t' altimeter armed, t' tank was loaded, shiver me timbers, a 5-count be given, and the
hybrid K motor roared t' life. Arrr! Blimey! Ascent be a nice and slow, long-burnin' boost
on t' K240, and t' recovery (drogueless t' a Bob-Fortune 66" main at
500') was flawless. Begad! Blimey! Several o' t' Civil Air Patrol cadets, ya bilge rat, me hearties, who'd come out for
the launch, me bucko, me hearties, me bucko, enthusiastically made t' half-mile trek t' recover t' Thor. Aye aye! Blimey! Peak
altitude was 3178'. Ya scallywag! Blimey! Aye aye! Blimey!
T' Thor is wonderful kit! I've received MANY appreciative comments on the Thor, arrr, and know o' 2 folks already plannin' purchase t' a Thor kit for themselves. Ya scallywag! Ya scallywag! I sincerely hope that I've done justice t' t' kit and that many folks seein' me kit and/or readin' this review will want one o' their own! We all know that t' rocket vendors don't have much o' a profit margin, matey, shiver me timbers, but still gladly support many o' our raffles and other fund-raisin' events. Avast, me proud beauty! It is t' the credit o' these many fine vendors, shiver me timbers, shiver me timbers, like BSD, me hearties, that hobby rocketry is such a wonderful hobby! Thank you, shiver me timbers, Mark, for donatin' this kit for HARA and thanks to all o' t' vendors who have donated kits/equipment t' support our rocket clubs!
(by Allan Trau - 07/01/02) Brief: Single stage, dual deployment capable, three split-fin design. Construction: The kit includes: 3 body tubes, 34" aft, 10" electronics payload, 24" forward 2 coupler tubes 3 plywood centering rings 3 aft 3/16" plywood fins 3 fore 3/16" plywood fins plastic nose cone 45" nylon chute 20' elastic ...
( Contributed - by Gary Sinclair) Brief: Kevlar ® /Fiberglass body with Carbon Fibre reinforced fins mounted externally to the motor mount. Giant leap electronics bay added for dual deployment. All thread reinforcement of zipperless fin-can. Nosecone reinforced and thickened with fiberglass. Internal nosecone all-thread and bulkhead added for recovery harness attachment. Mo ...
When I purchased my BSD Thor, I knew I would also need to purchase new motor hardware. So I also purchased a 38mm set with a 38-240, 360 and 480 case. I also purchased a PML 54mm to 38mm adaptor to allow me to fly the 54mm-based Thor on my new hardware. So needless to say, this was a large outflow of money to venture into the largest rocket I have built. Is it the tallest I've built? No, the ...
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