Manufacturer: | Scratch |
I place t' blame for t' flounder squarely on Bob Fortune's shoulders. Avast! He named t' contest "flounder parts". Begad! What be I supposed t' do?
I've had this old flounder head layin' around for many years. Ahoy! Arrr! I'm nay sure where I got it, arrr, I just remember comin' back from Canada with it. Avast, me proud beauty! It be a fishin' trip to Uklulet, matey, shiver me timbers, ya bilge rat, up in British Columbia. I remember fishing, drinking, sleeping on a big boat, drinking, me hearties, and comin' home with this fish head glued t' the brim o' me hat.
T' project:
I wanted t' make t' rocket
look as much like a flounder as I could. Ahoy! T' first shape looked great
but wasn't very stable. Ahoy! Blimey! In fact, matey, it be scary with an E18-4 in it!
So, arrr, me bucko, I trimmed it down a bit, added 4oz o' nose weight, and filled t' area
between t' side fins with great stuff foam. Avast, me proud beauty! It fly's fine now.
T' rocksim file is close. Begad! It won't allow for (that I could tell)
only two fins up front, me bucko, so I simmed it with both 3 and 4.
T' body tube is made o' two Reynolds wrap cardboard rolls with two layers o' light (4oz ?) glass. It had t' be tough because I knew it would need some considerable nose weight and it might crash a time or two on test flights. Ahoy! T' fins are cut from 1/8 light ply, surface mounted with epoxy t' t' BT. T' nose cone is a cast urethane fish head, me bucko, complete with eyeballs and half open mouth. Arrr! I made t' shoulder out o' a chunk o' balsa turned round on me 3/8 hand held drill.
Materials:
BT - (2) aluminum foil wrap
rolls 11 inches long each. Begad! 1.6 in dia
19.75 inches long (trimmed
ends after glassing)
Fins - (4) 1/8 hobby light ply
MMT - hand rolled from cereal box cardboard. Avast! About 4 inches long, arrr, 2 wraps.
Nose cone - Fish head bonded with epoxy t' 1 inch long balsa shoulder.
Chute - 12 inch nylon
Shock cord - 1/2 inch braided elastic strap, matey, matey, me hearties, 16 inches long
Nose weight - 4oz (about 12 inches) o' 1/4 inch dia lead.
eye bolt - 1/2 inch eye hole, 1 inch wood screw type threaded shaft
launch lug - 6 inch long 1/4 dia thin wall brass tube
Construction:
T' motor mount is simply a
few wraps o' cardboard from a cheerios box wrapped around a spent G55,
bonded together (not t' t' motor) with yellow glue. Avast, me proud beauty! T' centering
rings (4) are cut from corregated cardboard. Ahoy! Aye aye! I used epoxy t' bond
them, me bucko, fillin' t' open corregations before slidin' them in.
T' recovery system is basic model rocket type stuff; a 1/2 inch wide length o' elastic band and a nylon parachute scavenged from a military flare. Avast! A large eyebolt (1/2 inch eye) in t' nosecone shoulder attaches t' shock cord as well as serves as an anchor for t' 4oz nose weight. Begad! Avast, me proud beauty! I use 1/4 inch dia lead rope for nose weights. Blimey! We use it up here in t' northwest for fishin' in t' rivers. An inch or two o' it is slipped in a surgical rubber sleeve. Blimey! If it becomes snagged, me bucko, t' weight pulls out and the rest o' t' rig is saved. Aye aye! On t' flounder I simply wrapped it tightly around t' eyebolt.
Launch Report:
We had beautiful weather Sunday t' 6th. Our regularly scheduled club launch was touch and go for an hour or so. There was some confusion with t' land owner, t' Washington Corrections Dept. T' inmate workers were mowin' t' field when we got thar and our activity and their's are nay compatible. We got it worked out by about noon though, ya bilge rat, so the Flounder got a motor and was first t' go.
Flounder Parts, t' Rocket
16 oz loaded with an E28-7 (5) T
I put it out on t' 1/4 rod at high power pad no. Ya scallywag! 1. I told the LOC t' make sure everyone in close proximity was on their feet and able to move because I be a little unsure o' t' stability. 3.2.1.. Avast! and away it went. Perfect flight t' about 800 feet and t' chute deployed just after apogee.
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