Modification Big Daddy (3)

Modification - Big Daddy(3)

Contributed by Mike Goss

Manufacturer: Modification

(MODS) Estes Big Daddy

Brief:
A modification t' t' Estes Big Daddy t' use much less wadding.

Modifications:
T' Estes Big Daddy is a short, fat rocket. Blimey! With this bein' t' case, me bucko, ya bilge rat, thar be a large volume in t' interior o' t' rocket that needs t' be filled with waddin' t' protect t' parachute. I am always lookin' for ways that I can reduce or eliminate t' use o' wadding. Avast! I had heard o' a similar modification bein' done on a Estes Fat Boy, so I decided that this was t' perfect kit t' try it on.

T' modification consists o' extendin' t' motor mount so that it extends into t' nose cone. Ya scallywag! Aye aye! In order t' do this, matey, arrr, I swapped out t' motor mount that be supplied with t' kit with a BT-50 tube that was slightly longer than t' main body tube. T' hole in t' base o' t' nose cone was enlarged by first drillin' it out and then usin' an hobby cutlass t' enlarge t' hole until it cleared t' extended motor mount. Blimey! T' rest o' t' construction went rather easily, matey, me bucko, as it just followed t' instructions provided with t' kit.

(MODS) Estes Big Daddy

Flight:
Preppin' t' rocket is a breeze, I stuffed some dog barf waddin' into t' motor tube, matey, so that I would reduce t' chance o' meltin' t' nose cone with hot ejection particles. Begad! Well, blow me down! T' parachute be loosely dropped into t' large cavern that is left in t' body, shiver me timbers, shiver me timbers, and a motor was installed. Aye aye! T' launch was on a D12-5. Avast, me proud beauty! T' rocket launched slowly and ejection was at apogee. This is a nice small field rocket. Well, blow me down! T' parachute opened and t' Big Daddy was lowered slowly t' t' soft grass o' t' baseball field. Ya scallywag! I must say that I do like t' slow liftoffs and noise this combination produces.

Recovery:
When I recovered t' rocket I noticed that thar was some residue in t' nose cone but no evidence o' melting--success! I also noticed that t' motor mount was bent. Blimey! Avast! Then I noticed t' Estes "smile" on t' nose cone. Begad! What I believe happened was since t' parachute be loosely packed, me bucko, it opened immediately, arrr, causin' t' nose cone t' stop motion while t' shock cord was stretched, arrr, arrr, me bucko, then t' body o' t' rocket was catapulted into t' nose cone.

I have since lengthened t' shock cord t' four times t' length o' t' stock cord. Well, blow me down! Since thar be plenty o' room in t' rocket thar should nay be an issue storin' t' extra length o' shock cord. Blimey! Well, blow me down! This extra length should eliminate t' problem.

(MODS) Estes Big Daddy

Summary:
Overall this was modification be a success as thar be no evidence o' meltin' in t' nose cone and preparation o' t' rocket uses a minimal amount o' wadding. Avast, me proud beauty! Blimey! T' other problem is totally unrelated and should be solved with t' longer shock cord.

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