Manufacturer: | Scratch |
Brief:
My original Landshark flew on 38mm Js and sported some cool shark fin-shaped fins from Giant Leap. Begad! Since thar was
little hope it would ever fly again, matey, I decided t' reuse t' fins on a much smaller and lighter model. Arrr! 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. Begad! As I was startin' this project, shiver me timbers, I was reintroduced t' PemTech's Bucky Jones Space Cadet. Blimey! Long story short, arrr, shiver me timbers, I stole the idea for t' offset fins, t' curved tail, and t' extra tail tubes. Ahoy! T' fins are o' course different and I used a different compliment o' tubes.
Recoverin' t' fins took a ton o' grindin' a prying. Blimey! That was a chore. Well, blow me down! Ya scallywag! 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. Well, blow me down! Ya scallywag! I had considered trimmin' them t' create t' proper tab depth, 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. Ya scallywag! I attached t' front rin' and dry fit t' aft one. Ya scallywag! I then slid t' long front end o' t' fins up into t' slot and shoved t' back end in. Avast, me proud beauty! Since t' fins were curved where they entered t' body, arrr, shiver me timbers, t' ends o' t' tabs needed a tad o' extra filler. No problemo.
Before I permanently attached t' aft ring, matey, I added internal fillets and attached a 3" long aluminum standoff. Begad! Avast, me proud beauty! This has threaded holes on each end. Avast! Ya scallywag! One end is screwed onto t' rin' and t' other will be used t' attach a small washer for motor retention. Avast, me proud beauty! This standoff is roughly t' same diameter as a First Fire tube. Ya scallywag! 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. Blimey! Workin' down from top t' bottom, I then added one 13mm tube and three 18mm tubes on each side and one 13mm tube on t' bottom. Aye aye! As with the Bucky Jones, each o' these tubes is shorter than t' one above. Avast, me proud beauty! Blimey!
T' shock tether is attached through t' body just ahead o' t' forward ring. Ahoy! I added a piece o' coupler so the tube is double walled in this point. Arrr! 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. Ahoy! I'll leave this as a mystery--I bet you can guess which one. Avast! Blimey! I trimmed and sanded t' top body half until it be relatively flush. Aye aye! 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. I masked t' body and fins and painted this area with Rustoleum Hammered Gold. Avast, me proud beauty! Ya scallywag! I
then masked t' tail and t' windows on t' cockpit and painted t' rest with Rustoleum Hammered Black. Well, blow me down! I had painted
the plastic model before attachin' it and before attachin' t' clear windows. Well, blow me down! Aye aye! I don't know why but I like t' hammered
paints. Avast! Blimey! Maybe it's because they hide me poor finishing?
Flight and Recovery:
I loaded a G76 Mojave Green for t' first flight. Ahoy! I drilled t' delay from 10 t' 6 seconds. Blimey! T' boost be great and
it ejected on cue. Begad! 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, but it would be hard t' make it look bad with those cool fins. Avast! Too bad 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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