Scratch Gaylord Original Design / Scratch Built

Scratch - Gaylord {Scratch}

Contributed by David Chance

Manufacturer: Scratch
(Contributed - by David Chance - 07/31/09) (Scratch) Gaylord

Brief:
A longish rocket with purple and yellow, consistin' o' 6 fins, 3 tubes, matey, and a head lamp with a comic super hero embedded. This rocket was designed t' be able t' be flown on t' D12-5 or t' E9-6 engines.

Construction:
Surprise items:

  • 3 pin' pong balls
  • Somethin' from a gum ball machine–-a light with a comic superhero inside.
  • A plastic egg

(Scratch) Gaylord

Here are all t' parts. Ya scallywag! Blimey! Arrr! Blimey! As you can see, ya bilge rat, I received a gold mine o' various tubes. Blimey! Blimey! Unfortunately, matey, ya bilge rat, I only had one tube that would fit t' nose cone with all t' other tubes bein' o' various sizes.

I didn't know where t' start, arrr, me bucko, so I started with t' motor mount. I found a tube that would fit a typical E motor (24mm) and I glued in a thrust rin' at t' proper spot, approximately 2.75 inches from t' end. T' thrust rin' was made by cuttin' a portion o' t' toilet paper roll an inch long, arrr, then cuttin' a portion o' that out t' give it a smaller diameter.

(Scratch) Gaylord

T' next portion I decided t' do was t' create t' upper fins. Arrr! This was done by cuttin' a ¾ inch tube in 3 equal lengths which came t' 2.75 inches each. Then I glued t' 3 orange fins t' them. In order for t' fins t' lay flat on t' tubes, shiver me timbers, a slit was cut into t' tubes so that t' tabs o' t' fins would slide through.

(Scratch) Gaylord

Wow, ya bilge rat, ya bilge rat, looks great doesn't it? Now set those aside for a moment. Avast! Ya scallywag! Next I took t' 1/8 inch thick balsa sheet and cut 3 fins. Avast! Each fin had approximately t' followin' dimensions:

(Scratch) Gaylord

I then glued t' balsa fins at t' bottom and t' 3 orange and tube fins near t' top o' t' tube. Avast! I didn't have a good picture o' this so I'll use a diagram.

(Scratch) Gaylord

There, matey, matey, t' rocket is takin' shape. Avast, arrr, me proud beauty! Now I just need t' add a bit o' flair. Begad! I took one half o' t' plastic egg, matey, me hearties, cut a hole in it t' size o' t' diameter o' t' lower body tube (1 inch), arrr, then slid it down t' top o' t' lower body tube until it was just above t' tube fin combos.

(Scratch) Gaylord

Now at this point, I discovered a problem. Begad! Ya scallywag! I liked that t' half egg was there, me hearties, but because it altered the overall diameter o' t' lower part o' t' rocket, ya bilge rat, matey, I needed t' place t' launch lugs on some kind o' standoff or else the launch rod would have t' go through t' egg.

I found another tube that be about 4 inches long and 0.75 inches in diameter. Ahoy! Blimey! I sliced it in half lengthwise. Out o' one o' those halves, me bucko, shiver me timbers, I cut a piece that was 2 inches long and then another piece 1 inch long, discardin' the remainder. Ahoy! I then placed t' 2 inch piece centered betwixt 2 fins about inch above t' bottom o' t' lower body tube. T' other was centered in betwixt t' upper fins. Then, on each o' t' standoffs, ya bilge rat, me hearties, I glued a portion o' t' launch lugs. (Scratch) Gaylord

Now t' work on t' payload section. Blimey! This portion o' t' project be a little trickier. Avast! Begad! I started with t' easiest part: t' nose cone.

(Scratch) Gaylord

First, matey, one o' me surprise items was t' be somethin' from a gum ball machine. One day I was at me local Fuddruckers, shiver me timbers, ya bilge rat, chowin' down on a burger with extra pickles and mayo when me deadlights were pulled t' t' dank corners o' the restaurant. Avast! Begad! Lo and behold were all these little machines with blinky lights that for years have sucked t' quarters from t' lint filled pockets o' starry eyed kids. Avast! Blimey! I be starry eyed. Aye aye! I sauntered over, wipin' mayo on me sleeve, me bucko, and side stepped a pickle on t' floor... Aye aye! Then I delved into me pockets with greasy fingers and pulled out a couple of quarters. Blimey! Moments later I had this light bulb thingy on a key chain. It had a switch on t' side that when flipped, will give off a glow from t' top. If you looked into t' glow, ya bilge rat, you could see a super hero type o' comic character, shiver me timbers, shiver me timbers, but with me poor eyesight, it reminded me o' a muscular cat with a funny hat. Well, blow me down! Aye aye! I nicknamed him Gaylord. When I got home, me bucko, I cut off t' chain with me trusty old Dremel and cut t' tip o' t' nose cone. Ahoy! Well, blow me down! I cut t' tip large enough t' fit the mini flash doohickey. Begad! I now had me nosecone.

(Scratch) Gaylord

Next comes t' harder part: usin' t' pesky pin' pong balls. I decided that I was goin' t' use t' balls as part of a pod like object that would be connected t' t' payload section. Begad! I cut a tube that was ¾ inch diameter into a 5 inch long piece. Aye aye! Arrr! In each o' t' pin' pong balls--and this is where it was tricky because pin' pong balls don't like to cooperate--I cut a hole that would allow me t' insert t' 5 inch piece. Aye aye! I then slid t' first pin' pong ball onto it until just a tip o' t' tube was pokin' out. Well, blow me down! On this end, ya bilge rat, I did a little somethin' more. Avast, me proud beauty! Ahoy! I found a tube that would make a perfect coupler for t' lower body tube. Aye aye! I attached this t' t' end o' t' pin' pong ball. Begad! T' next step was t' take 2 more pin' pong balls and slide it down next t' t' others. Begad! Now I had somethin' like this:

(Scratch) Gaylord

(Scratch) Gaylord

But I'm nay done yet. Avast, me proud beauty! I took t' toilet paper tube that I had left over and cut a piece 3 inches long. Avast, me proud beauty! Ahoy! This piece will fit over t' pin' pong balls snugly. Avast, me proud beauty! Now I had somethin' like this:

(Scratch) Gaylord

Now, I glued t' payload section, which is a 1.25 inch diameter by 10 inches long tube t' t' payload side (the side with t' 0.75 inch tube stickin' out). Aye aye! Blimey! Now I had somethin' like this (please forgive me artistry):

(Scratch) Gaylord

On t' end with t' coupler, a bulkplate will be needed. I made a mistake while I be buildin' Gaylord. Begad! I cut a piece o' round cardboard from t' box that I received t' parts in and then glued it t' t' end o' t' coupler. Blimey! If I was smart, I would have used this as an opportunity t' glue in t' shock chord inside t' coupler. Avast! Then I could have glued in t' cardboard bulkplate pinchin' in t' shock chord inside t' coupler for further "holding" power. Begad!

Usin' t' folded paper method (glue t' chord t' a strip o' paper and fold twice), ya bilge rat, I glued t' chord t' the inside o' t' lower body tube and far down as your little fingers can reach. Avast! T' other end, me hearties, me bucko, I glued t' chord t' the base o' t' bulk plate in t' coupler.

(Scratch) Gaylord

Finishing:
I taped over t' flashlight thingy o' t' nose cone t' keep it from bein' painted. Ahoy! I then sprayed primer, arrr, shiver me timbers, sanded, and sprayed another coat. Well, blow me down! Begad! After some sandin' I used some purple paint that I found on sale, which was great because the flash light thingy was already purple.

(Scratch) Gaylord

Flight and Recovery:
On July 25, arrr, at MDRA's launch, me bucko, me hearties, I launched Gaylord on a D12-5. Avast, me proud beauty! T' winds were eastward at about 10mph. Arrr! At liftoff, Gaylord made a nice slow liftoff and arced slightly into t' wind t' an altitude o' about 500 feet. Ya scallywag! Ahoy! T' ejection was less than perfect as me shock chord did nay hold t' t' base o' t' bulkplate and thar be a separation. Fortunately the damage be only minor in that t' coupler broke on landing.

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