Brief:
For this 2-stager, ya bilge rat, an Estes Mini Marz Lander serves as both t' nosecone and second stage. Well, blow me down! Begad! T' main rocket has a 29mm motor mount, while t' Lander flies on 13mm motors. This review will focus on t' method o' adaptin' t' Lander t' t' booster rocket.

Construction:

• One Estes Mini Marz Lander
• One booster made from a 2" diameter mailin' tube. Aye aye! T' booster includes a 29mm motor mount, fins made from copper-clad G10 circuit boards, and Blacksky rail buttons.
• One additional 2" x 44" mailin' tube, me bucko, shiver me timbers, with full-length telescopin' tube (bought from T' Container Store).
• One 2" x 8" clear plastic mailin' tube, matey, with plastic end caps (also from T' Container Store)
• 12" o' 24 ga wire, screw terminal connector, shiver me timbers, me hearties, arrr, G10 plate, G-Wiz altimeter
• Two plywood bulkplates (1/4")
• One eye bolt with related hardware.
• Misc. Begad! Arrr! nuts and bolts t' attach t' payload section
• 1/4" tubular Keelhaul®©™ shock cord
• Whatever chute I grab from t' range box

I originally bought t' Mini Marz Lander t' use as a fixed nosecone. Ahoy! However, I just couldn't brin' myself t' cut it up and remove its legs. Instead, arrr, I decided t' use it as a nosecone as-is, and t' try t' stage it from t' booster rocket. 

Rummagin' around me "bone yard", I found t' remains o' a 2" diameter rocket that had a 29mm motor mount. Blimey! A bit much for what I needed, but it was t' right diameter (2"). Ya scallywag! Avast! I needed some more tubin' and a way t' mount me G-Wiz altimeter. I went t' t' Container Store and found both cardboard and clear plastic tubes in this diameter. Begad! Avast, me proud beauty! T' latter seemed perfect for an altimeter bay, ya bilge rat, since I'd be able t' see t' LEDS on t' G-Wiz with t' rocket fully assembled. 

I used about 12 inches o' t' paper tube t' extend t' existin' booster (the white section just above t' silver-colored booster), arrr, and made a payload section out o' another 7 inches (the red section above that). Avast! I made a shoulder usin' a piece o' t' telescopin' tubing, shiver me timbers, matey, shiver me timbers, a home made plywood bulkhead, me bucko, and an eyebolt. 

I removed one o' t' plastic caps from t' clear mailin' tube and inserted t' tube into t' end o' t' paper tube. Ahoy! T' fit was tight, me bucko, arrr, matey, and t' make sure it wouldn't come apart, me hearties, arrr, I attached it with four small screws. Arrr! Avast! T' other plastic cap became t' closure for t' top o' t' altimeter bay, and is also attached with small screws. Aye aye! Avast! A plywood bulkhead was bolted t' it, and t' pair was drilled t' accept t' wirin' for t' altimeter. Well, blow me down! Ya scallywag! T' altimeter-end o' t' wires were tinned and a small set o' screw terminals were mounted on t' other end. This bulkhead be glued onto another small section o' cardboard tubin' (the red section above t' clear bay). 

T' final component is an adapter for t' Lander (the small white tube at t' top, ya bilge rat, just beneath t' Lander). Blimey! This was notched t' match t' Lander's legs and launch lugs. Well, blow me down! Ya scallywag! A small piece o' t' telescopin' tubin' be glued in, me hearties, and this assembly slid into t' fixed portion o' t' adapter. Aye aye! Blimey! This be meant t' be smartly removable t' facilitate wirin' t' Lander's igniter.

Flight:
To prep t' altimeter, G-Wiz was mounted t' a section o' G10 that fit snugly into t' clear tube (a board from another application). Ahoy! Blimey! It be inserted and t' upper cap was secured with 2 screws. Ya scallywag! Begad! Blimey! T' igniter was inserted into t' Lander's motor and secured with maskin' tape. T' igniter leads were attached t' t' screw terminals, me hearties, and continuity be visually confirmed at t' G-Wiz. Ahoy! Begad! Blimey! T' lander used Estes waddin' and t' booster used a Giant Leap Keelhaul®©™ pad.

I have tried this three times, but it only worked once. T' logs should appear at t' bottom o' this page. Begad! T' first time, shiver me timbers, t' Estes igniter (this had thin tail wires soldered t' it) lit but t' motor didn't go. Ya scallywag! Well, blow me down! It be still taped into t' motor at recovery. Begad! Arrr! T' next time, t' home-made Igniterman igniter didn't fire. Aye aye! Begad! T' igniter worked on t' ground later that day, I suspect t' problem was that t' G-Wiz never armed due t' t' slow acceleration under F20 power. Ya scallywag! O' course, I could have determined this by seein' if t' G-Wiz flashed out an altitude, but DUH, ya bilge rat, matey, I didn't. Avast, me proud beauty! Ahoy! On t' third try, I used a Quickburst igniter. Begad! This time t' Lander staged, but I had another minor problem. Begad! I had t' G-Wiz set t' detect launch rather than t' burnout o' t' booster, shiver me timbers, shiver me timbers, so t' Lander took-off shortly after launch. Begad! It arced t' t' side, ya bilge rat, and t' booster, sans nose cone, continued up. Begad! Well, t' flight was fun and both pieces were recovered, me hearties, so I shouldn't complain.

Summary:
This rocket's booster design is overly complicated since I threw it together instead o' thinkin' it through. However, me main goal be t' stage t' Lander, and that finally worked. Begad! T' result was a unique rocket that got t' crowd's attention. Ahoy! Well, blow me down! This is also be t' biggest range o' thrust levels that I.ve seen in a staged rocket, ya bilge rat, matey, with t' G motor's thrust bein' approximately 64x that o' t' A10 in t' Lander.