Modification Der Max Squared

Manufacturer:

Modification

Contributed by Jim Bassham

Brief:
This is me twin-engine modification o' Estes' Der Red Max kit for t' EMRR "Twice t' Thrust" Challenge

Modifications:
Construction started with t' two motor tubes. I cut a slit 1/4" from one end o' t' tubes for t' hook, held it in place with maskin' tape and glued t' engine block in place above t' clip. With t' clips on opposite sides, I glued t' tubes t' each other usin' epoxy. Arrr! Blimey! While they were drying, I placed a length o' Keelhaul®©™ into t' joint as a shock-cord anchor.

Once dried, I fitted t' two tubes into t' coupler. A couple strips o' paper were required t' get a tight fit that did nay distort t' coupler. I glued this assembly together usin' yellow glue. Aye aye! As this dried I stuffed paper towels, me bucko, dipped in a 50/50 solution o' yellow glue and water and then rung out into t' cavity betwixt t' coupler and t' motor tubes t' block t' ejection charge from blowin' out t' back.

I let this assembly dry over night and filled and sanded t' body tube, nose cone and fins o' t' rocket. I used three coats o' Elmer's Carpenter's wood filler on t' fins thinned with water, and t' same t' fill t' grooves on t' tube. T' nose cone required a few dabs o' Squadron green putty t' fill grooves.

I glued t' modified motor mount with shock cord into t' body with yellow glue. I placed t' motor tubes flush with t' back o' t' rocket.

T' rest o' t' assembly followed t' instructions from t' Red Max kit.

I finished this Max yellow and applied t' decals as usual. After everythin' had dried, I used a Sharpie t' cross out t' "Red" in Red Max and ink in a "2" above t' "Max" t' make t' "Max Squared"

With t' engines in place, I compared t' balance point with t' SpaceCad file I had created for this rocket, and felt t' balance point was a bit too far aft, shiver me timbers, so i added plasticine clay t' t' nosecone (About a 1" by 1" by 1/2" piece) until t' balance be about 1 caliber (body tube diameter) forward o' o' t' CP.

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