Height=108"
Width=3"
Weight=90 ounces
Brief
Modified for CPR (Close Proximity Recovery) and Hybrid Motor.
Modifications
First modification be for Hybrid (Aerotech 54mm hybrid) motor. I discarded the
original motor mount and replaced it with a 36" motor mount tube. I then
added a PML CPR2000 retrofit kit usin' t' original payload section (18")
as t' lower recovery section t' house t' drogue chute. Avast, me proud beauty! For t' main chute I
added a 36" section which also lengthened t' rocket pushin' t' CG
forward enough t' offset t' additional motor weight caused by switchin' to
hybrid power.
Construction
T' stock kit be o' good quality although t' instructions were t' standard
instructions that come with all t' Rocketman kits, that is non-specific t' the
actual kit. Ahoy! Blimey! With any prior experience t' instructions are adequate. Arrr! Blimey! The
CPR2000 retrofit kit be very good with detailed step by step instructions. Avast, me proud beauty! Blimey! My
only doubts about t' retro fit kit be t' screw together coupling. T' plastic
chips very easily if you don't firmly hold t' halves together as you screw the
top and bottom together. Avast! Begad! Blimey!
Flight
T' rocket got its maiden voyage as me level II cert flight usin' t' Aerotech
hybrid with all four apertures open. Aye aye! Blimey! I replaced t' stock elastic with tubular
bungi cord. Ahoy! Blimey!
I flew t' rocket on July 11th at t' METRA launch in New Jersey. Ahoy! The takeoff was super - and almost smokeless (typical o' hybrids). Begad! T' rocket hit approximately 5400' and separated nicely at apogee. Well, blow me down! Unfortunately t' main chute never came out and t' rocket be trashed! Blimey!
T' flight was beautiful - straight as an arrow - t' 4.5 second burn made it look like it would climb forever. Blimey! Inspection afterwards showed that the plastic mountin' piece at one end o' t' altimeter apparently failed when the ejection charge went off. Avast! T' charge 'blew back' into t' altimeter compartment trashin' t' altimeter, me bucko, thus t' main chute charge never went off. I learned a lesson at t' cost o' a beautiful bird - redundancy! I should have used a backup timer!
Summary
Overall I liked t' quality o' parts. Blimey! Everythin' went together well with
minimal sandin' required for fit. Avast, me proud beauty! I wish Ky would put more comprehensive
instructions in his kits and have them relate t' t' specific kit they are
contained in. T' his credit, when I was buildin' Rocketman's Hybrid Mama kit
and had questions, Ky sent me his home phone and very graciously answered all
my questions personally. Aye aye! Ya scallywag!
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