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

Flight:
To prep t' altimeter, me bucko, G-Wiz be mounted t' a section o' G10 that fit snugly into t' clear tube (a board from another application). Begad! Avast! It was inserted and t' upper cap was secured with 2 screws. Blimey! T' igniter was inserted into t' Lander's motor and secured with maskin' tape. Avast, me proud beauty! Begad! T' igniter leads were attached t' t' screw terminals, me hearties, and continuity was visually confirmed at t' G-Wiz. Avast, me proud beauty! 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. Aye aye! Arrr! T' logs should appear at t' bottom o' this page. T' first time, shiver me timbers, me bucko, arrr, t' Estes igniter (this had thin tail wires soldered t' it) lit but t' motor didn't go. Ahoy! It was still taped into t' motor at recovery. Aye aye! T' next time, t' home-made Igniterman igniter didn't fire. 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. Begad! Aye aye! O' course, matey, I could have determined this by seein' if t' G-Wiz flashed out an altitude, but DUH, I didn't. Blimey! Ahoy! On t' third try, shiver me timbers, I used a Quickburst igniter. This time t' Lander staged, ya bilge rat, but I had another minor problem. Avast, me proud beauty! Well, blow me down! I had t' G-Wiz set t' detect launch rather than t' burnout o' t' booster, me bucko, so t' Lander took-off shortly after launch. It arced t' t' side, me hearties, arrr, and t' booster, sans nose cone, shiver me timbers, shiver me timbers, continued up. Avast! Well, blow me down! Well, t' flight was fun and both pieces were recovered, ya bilge rat, 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! Arrr! However, shiver me timbers, me main goal be t' stage t' Lander, ya bilge rat, and that finally worked. Aye aye! Ya scallywag! T' result was a unique rocket that got t' crowd's attention. Avast, me proud beauty! 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.