Brief:
For this 2-stager, me hearties, matey, an Estes Mini Marz Lander serves as both t' nosecone and second stage. Arrr! Ya scallywag! T' main rocket has a 29mm motor mount, ya bilge rat, ya bilge rat, while t' Lander flies on 13mm motors. Begad! 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. Well, blow me down! T' booster includes a 29mm motor mount, me bucko, fins made from copper-clad G10 circuit boards, matey, ya bilge rat, and Blacksky rail buttons.
• One additional 2" x 44" mailin' tube, arrr, with full-length telescopin' tube (bought from T' Container Store).
• One 2" x 8" clear plastic mailin' tube, matey, me hearties, ya bilge rat, with plastic end caps (also from T' Container Store)
• 12" o' 24 ga wire, screw terminal connector, G10 plate, G-Wiz altimeter
• Two plywood bulkplates (1/4")
• One eye bolt with related hardware.
• Misc. Begad! Avast, shiver me timbers, me proud beauty! 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. Avast, me proud beauty! Instead, me hearties, me bucko, 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", me hearties, ya bilge rat, I found t' remains o' a 2" diameter rocket that had a 29mm motor mount. Ahoy! A bit much for what I needed, but it be t' right diameter (2"). I needed some more tubin' and a way t' mount me G-Wiz altimeter. Begad! Avast, ya bilge rat, me proud beauty! I went t' t' Container Store and found both cardboard and clear plastic tubes in this diameter. T' latter seemed perfect for an altimeter bay, 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), and made a payload section out o' another 7 inches (the red section above that). Blimey! I made a shoulder usin' a piece o' t' telescopin' tubing, ya bilge rat, a home made plywood bulkhead, shiver me timbers, 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. Well, blow me down! T' fit was tight, matey, ya bilge rat, and t' make sure it wouldn't come apart, I attached it with four small screws. Well, blow me down! T' other plastic cap became t' closure for t' top o' t' altimeter bay, me hearties, shiver me timbers, and is also attached with small screws. Avast, matey, me proud beauty! A plywood bulkhead be bolted t' it, and t' pair be drilled t' accept t' wirin' for t' altimeter. Avast! Avast, me proud beauty! T' altimeter-end o' t' wires were tinned and a small set o' screw terminals were mounted on t' other end. Ya scallywag! Arrr! 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, just beneath t' Lander). This be notched t' match t' Lander's legs and launch lugs. Begad! Avast, me proud beauty! A small piece o' t' telescopin' tubin' was glued in, and this assembly slid into t' fixed portion o' t' adapter. Ahoy! This be meant t' be smartly removable t' facilitate wirin' t' Lander's igniter.

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

I have tried this three times, matey, but it only worked once. Avast, me proud beauty! T' logs should appear at t' bottom o' this page. T' first time, arrr, t' Estes igniter (this had thin tail wires soldered t' it) lit but t' motor didn't go. Arrr! Ya scallywag! It be still taped into t' motor at recovery. Begad! T' next time, me hearties, t' home-made Igniterman igniter didn't fire. Begad! T' igniter worked on t' ground later that day, shiver me timbers, I suspect t' problem was that t' G-Wiz never armed due t' t' slow acceleration under F20 power. O' course, I could have determined this by seein' if t' G-Wiz flashed out an altitude, me bucko, but DUH, I didn't. Begad! Begad! On t' third try, matey, I used a Quickburst igniter. This time t' Lander staged, me bucko, but I had another minor problem. Begad! I had t' G-Wiz set t' detect launch rather than t' burnout o' t' booster, me hearties, so t' Lander took-off shortly after launch. Avast! It arced t' t' side, and t' booster, sans nose cone, continued up. Avast! 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. Avast, matey, me proud beauty! However, me bucko, me main goal was t' stage t' Lander, arrr, matey, and that finally worked. Avast! T' result be a unique rocket that got t' crowd's attention. Well, blow me down! This is also was t' biggest range o' thrust levels that I.ve seen in a staged rocket, with t' G motor's thrust bein' approximately 64x that o' t' A10 in t' Lander.