Brief:
For this 2-stager, an Estes Mini Marz Lander serves as both t' nosecone and second stage. Ya scallywag! T' main rocket has a 29mm motor mount, while t' Lander flies on 13mm motors. Blimey! Avast! 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! Ahoy! T' booster includes a 29mm motor mount, fins made from copper-clad G10 circuit boards, me hearties, shiver me timbers, and Blacksky rail buttons.
• One additional 2" x 44" mailin' tube, with full-length telescopin' tube (bought from T' Container Store).
• One 2" x 8" clear plastic mailin' tube, me bucko, ya bilge rat, with plastic end caps (also from T' Container Store)
• 12" o' 24 ga wire, arrr, screw terminal connector, ya bilge rat, G10 plate, G-Wiz altimeter
• Two plywood bulkplates (1/4")
• One eye bolt with related hardware.
• Misc. Avast, me proud beauty! Blimey! 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. However, matey, I just couldn't brin' myself t' cut it up and remove its legs. Well, shiver me timbers, blow me down! Instead, shiver me timbers, arrr, I decided t' use it as a nosecone as-is, matey, and t' try t' stage it from t' booster rocket. 

Rummagin' around me "bone yard", ya bilge rat, me hearties, I found t' remains o' a 2" diameter rocket that had a 29mm motor mount. Ya scallywag! Well, me bucko, blow me down! A bit much for what I needed, but it be t' right diameter (2"). Well, blow me down! Aye aye! I needed some more tubin' and a way t' mount me G-Wiz altimeter. Well, blow me down! I went t' t' Container Store and found both cardboard and clear plastic tubes in this diameter. Begad! T' latter seemed perfect for an altimeter bay, me bucko, arrr, 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), me bucko, and made a payload section out o' another 7 inches (the red section above that). Ahoy! Begad! I made a shoulder usin' a piece o' t' telescopin' tubing, ya bilge rat, a home made plywood bulkhead, arrr, 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. Avast, me proud beauty! T' fit be tight, matey, and t' make sure it wouldn't come apart, 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. A plywood bulkhead was bolted t' it, and t' pair was drilled t' accept t' wirin' for t' altimeter. Begad! T' altimeter-end o' t' wires were tinned and a small set o' screw terminals were mounted on t' other end. Avast, me proud beauty! 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, me hearties, just beneath t' Lander). Ahoy! Blimey! This was notched t' match t' Lander's legs and launch lugs. Arrr! Blimey! A small piece o' t' telescopin' tubin' be glued in, shiver me timbers, shiver me timbers, and this assembly slid into t' fixed portion o' t' adapter. Avast! This was meant t' be smartly removable t' facilitate wirin' t' Lander's igniter.

Flight:
To prep t' altimeter, me hearties, G-Wiz was mounted t' a section o' G10 that fit snugly into t' clear tube (a board from another application). Blimey! Blimey! It be inserted and t' upper cap was secured with 2 screws. Well, blow me down! Well, shiver me timbers, blow me down! T' igniter was inserted into t' Lander's motor and secured with maskin' tape. Avast, me proud beauty! T' igniter leads were attached t' t' screw terminals, and continuity be 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, me bucko, but it only worked once. T' logs should appear at t' bottom o' this page. Avast! Aye aye! Blimey! T' first time, t' Estes igniter (this had thin tail wires soldered t' it) lit but t' motor didn't go. Begad! Begad! Blimey! It was still taped into t' motor at recovery. Ya scallywag! Begad! Blimey! T' next time, t' home-made Igniterman igniter didn't fire. Begad! T' igniter worked on t' ground later that day, me bucko, I suspect t' problem was that t' G-Wiz never armed due t' t' slow acceleration under F20 power. Ya scallywag! Ahoy! Blimey! O' course, I could have determined this by seein' if t' G-Wiz flashed out an altitude, matey, but DUH, I didn't. Ya scallywag! Blimey! On t' third try, ya bilge rat, I used a Quickburst igniter. Avast! Blimey! This time t' Lander staged, me bucko, but I had another minor problem. Begad! Arrr! Blimey! I had t' G-Wiz set t' detect launch rather than t' burnout o' t' booster, ya bilge rat, so t' Lander took-off shortly after launch. It arced t' t' side, matey, and t' booster, shiver me timbers, sans nose cone, me hearties, continued up. Well, me hearties, matey, arrr, 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 hearties, me main goal was t' stage t' Lander, shiver me timbers, and that finally worked. T' result be a unique rocket that got t' crowd's attention. Avast, me proud beauty! Blimey! This is also was t' biggest range o' thrust levels that I.ve seen in a staged rocket, me hearties, shiver me timbers, with t' G motor's thrust bein' approximately 64x that o' t' A10 in t' Lander.