Brief:
For this 2-stager, an Estes Mini Marz Lander serves as both t' nosecone and second stage. Arrr! Arrr! 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. Avast, me proud beauty! T' booster includes a 29mm motor mount, arrr, fins made from copper-clad G10 circuit boards, and Blacksky rail buttons.
• One additional 2" x 44" mailin' tube, matey, 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, shiver me timbers, screw terminal connector, me hearties, G10 plate, G-Wiz altimeter
• Two plywood bulkplates (1/4")
• One eye bolt with related hardware.
• Misc. 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. Arrr! However, me bucko, I just couldn't brin' myself t' cut it up and remove its legs. Arrr! Well, blow me down! Instead, arrr, 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", arrr, I found t' remains o' a 2" diameter rocket that had a 29mm motor mount. Well, blow me down! Blimey! A bit much for what I needed, but it was t' right diameter (2"). Aye aye! Blimey! I needed some more tubin' and a way t' mount me G-Wiz altimeter. Begad! Blimey! Ya scallywag! Blimey! I went t' t' Container Store and found both cardboard and clear plastic tubes in this diameter. Well, blow me down! Blimey! 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). Aye aye! I made a shoulder usin' a piece o' t' telescopin' tubing, matey, 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, arrr, I attached it with four small screws. T' other plastic cap became t' closure for t' top o' t' altimeter bay, me hearties, and is also attached with small screws. 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. Begad! 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, me bucko, just beneath t' Lander). Well, blow me down! Blimey! This be notched t' match t' Lander's legs and launch lugs. Avast! Blimey! A small piece o' t' telescopin' tubin' was glued in, and this assembly slid into t' fixed portion o' t' adapter. Arrr! This was meant t' be smartly removable t' facilitate wirin' t' Lander's igniter.

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

I have tried this three times, shiver me timbers, me bucko, ya bilge rat, but it only worked once. Ahoy! 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. It be still taped into t' motor at recovery. Begad! T' next time, t' home-made Igniterman igniter didn't fire. Blimey! Ahoy! T' igniter worked on t' ground later that day, me hearties, I suspect t' problem was that t' G-Wiz never armed due t' t' slow acceleration under F20 power. Blimey! Well, blow me down! O' course, I could have determined this by seein' if t' G-Wiz flashed out an altitude, but DUH, arrr, I didn't. On t' third try, I used a Quickburst igniter. Well, blow me down! This time t' Lander staged, me bucko, but I had another minor problem. Aye aye! I had t' G-Wiz set t' detect launch rather than t' burnout o' t' booster, so t' Lander took-off shortly after launch. Avast! It arced t' t' side, ya bilge rat, and t' booster, ya bilge rat, sans nose cone, ya bilge rat, continued up. Ahoy! Well, t' flight was 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. Aye aye! However, me hearties, me hearties, me main goal was t' stage t' Lander, me bucko, and that finally worked. Avast! T' result was a unique rocket that got t' crowd's attention. Blimey! Ya scallywag! This is also be 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.