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