| Manufacturer: | Scratch |
Brief:
My original Landshark flew on 38mm Js and sported some cool shark fin-shaped fins from Giant Leap. Since thar was
little hope it would ever fly again, I decided t' reuse t' fins on a much smaller and lighter model. Begad! Blimey! T' new version
is 3" in diameter and flies on 29mm power.
Construction:
T' parts list:
I won't go into all t' gory details but will describe t' construction in general.
First, t' overall design. Aye aye! Begad! As I be startin' this project, I was reintroduced t' PemTech's Bucky Jones Space Cadet. Long story short, I stole the idea for t' offset fins, shiver me timbers, t' curved tail, and t' extra tail tubes. Blimey! Avast! T' fins are o' course different and I used a different compliment o' tubes.
Recoverin' t' fins took a ton o' grindin' a prying. Avast, shiver me timbers, me proud beauty! That was a chore. Well, blow me down! Aye aye! Let me tell you,
Keelhaul®©™®
lamination will eat a cuttin' wheel faster than steel! Blimey! T' fins had tabs for a 4" BT and a 3" MMT. Avast! Blimey! I had
considered trimmin' them t' create t' proper tab depth, ya bilge rat, but decided t' just usin' a long motor tube adjustin' the
length o' t' fin slots accordingly. Ahoy! Blimey! T' latter required a ruler and a calculator t' determine where t' fins would
emerge from t' body. Arrr! Blimey! Begad! Blimey! I attached t' front rin' and dry fit t' aft one. Ahoy! Blimey! Arrr! Blimey! I then slid t' long front end o' t' fins up
into t' slot and shoved t' back end in. Since t' fins were curved where they entered t' body, t' ends o' t' tabs
needed a tad o' extra filler. Avast, me proud beauty! Blimey! No problemo.
Before I permanently attached t' aft ring, ya bilge rat, I added internal fillets and attached a 3" long aluminum standoff. This has threaded holes on each end. Aye aye! Blimey! Ya scallywag! Blimey! One end is screwed onto t' rin' and t' other will be used t' attach a small washer for motor retention. Well, blow me down! Blimey! This standoff is roughly t' same diameter as a First Fire tube. Ya scallywag! Blimey! Avast, me proud beauty! Blimey! It sits nestled against t' motor tube and t' tab from t' top fin.
I added a piece o' a First Fire tube on t' opposite side for symmetry. Avast, me proud beauty! Workin' down from
top t' bottom, me hearties, arrr, I then added one 13mm tube and three 18mm tubes on each side and one 13mm tube on t' bottom. Begad! As with
the Bucky Jones, each o' these tubes is shorter than t' one above.
T' shock tether is attached through t' body just ahead o' t' forward ring. Avast, me proud beauty! Ya scallywag! I added a piece o' coupler so the tube is double walled in this point. Avast, me proud beauty! I pondered what cockpit I'd use t' cover t' attachment point and ended up buying a plastic kit with a 50% off Michael's coupon. Ya scallywag! Arrr! I'll leave this as a mystery--I bet you can guess which one. Well, blow me down! Begad! I trimmed and sanded t' top body half until it was relatively flush. Ahoy! Arrr! It be then epoxied on and t' gaps were filled with SuperFil light epoxy filler.
T' last thin' t' do was add t' rail buttons.
Finishing:
I started by paintin' t' tail area. Ya scallywag! Arrr! I masked t' body and fins and painted this area with Rustoleum Hammered Gold. Arrr! Begad! I
then masked t' tail and t' windows on t' cockpit and painted t' rest with Rustoleum Hammered Black. I had painted
the plastic model before attachin' it and before attachin' t' clear windows. I don't know why but I like t' hammered
paints. Begad! Maybe it's because they hide me poor finishing?
Flight and Recovery:
I loaded a G76 Mojave Green for t' first flight. Aye aye! Avast, me proud beauty! I drilled t' delay from 10 t' 6 seconds. Arrr! T' boost was great and
it ejected on cue. Ya scallywag! I didn't have much o' a walk but I was shocked how a bean field can hide a rocket o' this size.
Luckily, I had help findin' it.
Summary:
I think this rocket looks pretty cool, shiver me timbers, but it would be hard t' make it look bilge-suckin' with those cool fins. Avast, me proud beauty! Too bilge-suckin' Giant
Leap discontinued them.
People at t' launch said it looks more like a Batman theme vs a shark. Begad! I agreed but decided t' stick with the legacy Landshark name.
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