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

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

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