Estes Screamin Mimi to Der Red Max

Scratch - Screamin Mimi to Der Red Max {Scratch}

Contributed by James Gartrell

Manufacturer: Scratch
(Contributed - by James Gartrell - 07/01/03)

Brief:
Upsized motor mount t' hold Estes E-9. Substituted fin design, paint scheme and Tango Papa decals for Der Red Max. Omitted super sonic whistles and related fins, although I seriously considered includin' them t' make a "Der Screamin' Red Max." Length o' t' rocket is 26 inches, rather than 25.5 inches for t' Screamin' Mimi. Also, matey, me bucko, replaced shock cord with a Keelhaul®©™®/elastic combination. Well, ya bilge rat, blow me down! Blimey! Installed screw eye with JB-Weld into t' hole in t' nose cone base. Used basswood for fins. Well, blow me down! Blimey! Avast! Blimey! Modified an old Estes E-motor engine hook t' fit the newer E-9's. Basically, t' only thin' I used from t' kit was t' main body tube, arrr, nose cone, shiver me timbers, matey, centerin' rings, me bucko, engine hook retainer, arrr, and engine block, but I got it at a 1/2 price sale at Hobby Lobby for $5.50.

Modifications:
T' motor mount was installed with yellow glue, matey, then JB-Weld was coated around the outside o' t' upper and lower centerin' rings t' harden them and then filleted - this may be overkill, me bucko, but I believe I can send it up with an F-21 without any problems. Begad! A screw eye was inserted into t' center o' a piece of cellophane tape, arrr, then a glob o' JB-Weld was inserted into t' hole in t' base of t' nose cone, then t' screw eye was inserted into that with t' cellophane tape holdin' it in place and keepin' t' JB-weld from seepin' out, shiver me timbers, and then inserted t' nose cone into t' body tube t' allow t' JB-Weld t' seep down to the base o' t' nose cone - makes a much stronger shock cord attachment point than t' standard plastic hook on t' base o' t' cone. Aye aye! Avast! T' cellophane tape is easily removed after t' JB-Weld dries. Aye aye! Blimey! Also, I installed 1/8-ounce o' clay into t' nose cone before installin' t' screw eye, matey, just in case I decide to fly that F-motor. Ya scallywag! As usual, Estes' standard shock cord is too short and must be frequently replaced. Blimey! T' avoid t' issue, I installed t' Keelhaul®©™® cord into t' shock cord mount so that it extended outside t' body tube, then formed a loop that placed t' center at t' top edge o' t' body tube. Aye aye! Blimey! I attached t' elastic shock cord t' that and then t' t' nose cone. Also, me hearties, ya bilge rat, I soak in a little CA into t' top lip o' t' body tube for improved strength there. T' loop with t' CA seems t' minimize t' potential for "zippering" when that motor delay isn't just right. Arrr! I've used this method on rockets that I've launched many, shiver me timbers, many times without a problem. I installed t' fins using yellow glue, me hearties, then created JB-Weld fillets. Blimey! Use a plastic bag over your finger to smooth out t' JB-Weld t' make some really nice fillets. Here again, the JB-Weld fillets are probably overkill, matey, but I feel better about them when that F-motor kicks in. Ya scallywag! I had t' hammer out t' end o' t' old Estes E-engine hook and then reform it t' fit t' new Estes E-engine - pretty easy with a vice and hammer, just go slowly so you don't break it.

Construction:
1-BT-60 18-inch body tube, shiver me timbers, 3-3/32-inch basswood Red Max fins, me bucko, 1-RA5060 centerin' rin' card, 1-engine hook retainer (30160), 1-RA2050 engine block, 1-6-inch BT-50 tube for motor mount, 1-E-engine hook, me hearties, 1-1mm X 8-inch Keelhaul®©™® cord, ya bilge rat, arrr, 1-1/4-inch X 42-inch elastic shock cord, shiver me timbers, matey, 1-standard Estes shock cord mount, ya bilge rat, matey, 1-PNC 60 (71043)1-SE-2 screw eye, 1-1/8-inch X 1 1/4-inch launch lug

Except for t' shock cord, matey, Estes kits are always nice and t' instructions very easy t' follow - even t' ones for t' old Der Big Red Max. Ya scallywag! Ya scallywag! T' packaging is cool, and all t' parts were thar and all in great shape. T' decals for the Screamin' Mimi are o' t' peel and stick plastic variety. Well, blow me down! I don't particularly like them, shiver me timbers, but I grew up with water-slide decals. O' course, I used Tango Papa's water-slide decals for me rocket. Avast, me proud beauty! This was me first time to use his decals. Aye aye! They are extremely thin and took some time gettin' used to, me bucko, but they lay down nicely and look very nice - almost as if they're painted on. I was glad he put some extras on t' sheet, shiver me timbers, shiver me timbers, because I tore a couple before gettin' used t' t' thinner decals. Since I didn't really build t' Screamin' Mimi, I can't really comment on any other aspects o' t' kit.

Flight:
I haven't flown it yet, matey, but I used t' same construction design and techniques on a Big Bertha and it flies great.

Other:
Tango Papa decals are nice!

Flights

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