Brief:
Single-stage, single-engine rocket with piston ejection system and is suitable for Level 1 attempts.

Construction:
This Aerotech rocket has t' standard Aerotech through t' wall Fin-Lok™ system and components except t' nose cone is a different material than t' other Aerotech's. Well, blow me down! Ahoy! It is gray and presumably stronger. Avast, me proud beauty! Ahoy! It has 4 fins about t' size o' t' Astrobee D but reported thinner than t' Astrobee. Even though it is only 3' tall, t' shock cord is 18' long! I asked Aerotech why and they said as t' cord gets wear and tear at t' engine end, shiver me timbers, it can be cut shorter. Ya scallywag! T' shock cord is attached t' t' top o' t' motor mount usin' a eye screw like other Aerotech's but for t' SUMO you don't glue t' screw in. Aye aye! That way you can unscrew it and fix or replace t' cord. Begad! You can do this easy because after installation, shiver me timbers, ya bilge rat, shiver me timbers, t' top o' t' engine tube is only a foot or so below t' top o' t' rocket.

Also note that this Aerotech has 2 other differences from t' normal Aerotech's. Aye aye! Ya scallywag! First, arrr, thar be no engine thrust rin' inside t' engine tube. Avast, me proud beauty! So you can fit all G and many 29 mm H RMS engines without problem. Avast, me proud beauty! Ahoy! It does have t' engine hook and when usin' t' 29/40-120 RMS casting, me hearties, you need a yellow spacer (provided). Well, blow me down! Secondly, it has a piston which ejects t' parachute. T' piston must be epoxied, me hearties, nay super glued together. Begad! T' 18' shock cord is attached at t' engine tube, ya bilge rat, runs through t' piston and on t' t' nose cone.

T' instructions are typical for Aerotech and are very good. They include a parts list, arrr, good photos, spec data, prep information, matey, etc. Ahoy! Well, blow me down! Blimey! Super glue is used everywhere except for t' piston. Ya scallywag! Blimey! Blimey! This is a level 1 capable rocket takin' up t' an H210 motor. Well, blow me down! Ahoy! Blimey! I assume if Aerotech says it is OK, ya bilge rat, me hearties, me bucko, super glue will work although many I know will use epoxy instead. Ahoy! Blimey! I built per t' instructions usin' super glue for everythin' except t' piston (usin' epoxy for that) and it weighed in at 32 ozs. Aye aye! Blimey! Usin' only epoxy will add weight. Begad! Blimey!

T' assembly process be t' standard Aerotech flow, me hearties, motor mount, shiver me timbers, fins, etc. Avast, me proud beauty! Because this rocket uses t' piston, ya bilge rat, thar be no metal mesh installed inside t' engine tube. Begad! Blimey! Also, as stated above, ya bilge rat, t' shock cord is screwed into a blast deflector bulkhead and into t' motor mount but it is nay glue in.

T' only problems I had with t' assembly were related t' t' piston. Ya scallywag! Blimey! Ahoy! Blimey! First, they supply two clamps which are suppose t' be snapped t' t' shock cord above and below t' piston. These clamps are suppose t' hold t' piston on t' cord. Ahoy! Blimey! Aye aye! Blimey! There is no good picture o' this in t' instructions. I couldn't get t' clamps t' lock down tight enough. Begad! Blimey! They allowed t' piston t' slide along t' cord so I didn't use t' clamps. Blimey! Blimey! Blimey! Blimey! I just tied a big knot on both sides o' t' piston bulkhead and it worked good. Well, blow me down! Blimey! Second, I couldn't get t' piston into t' body tube. Ahoy! Blimey! It was too big. Arrr! Blimey! T' instructions said nothin' about this so I called Aerotech and they sounded surprised and said they didn't have a problem. Ya scallywag! Blimey! Arrr! Blimey! But then I told them where I lived and how humid it had been and then they concluded it must have expanded t' piston. So I lightly sanded t' piston until it fit snug in t' tube.

Finishing:
I painted and put t' decals on me rocket per Aerotech's model. Begad! T' decal sheet for this short rocket is one o' t' largest I have ever seen! After paintin' t' rocket red and yellow, shiver me timbers, I applied t' decals and I think it looks great. Begad! I rate t' construction 4.5 because t' instructions could be a little bit better concernin' t' piston and its installation.

Construction Rating: 4

Flight:
T' smallest motor for this rocket is a G35, matey, t' largest is an H210. Ya scallywag! I flew it on a G64-4 without problem. At t' same time, ya bilge rat, a friend o' mine flew his for his Level 1 with an H128 with no problems. There be a 5-12 mph wind and me rocket went straight up until near apogee when it started t' angle but by that time t' chute opened.

There is a minor problem with preparin' t' rocket for flight. Ya scallywag! Arrr! Because this rocket is so short and t' engine tube is quite long, and t' shock cord is so long, matey, me hearties, plus thar be a piston and chute that all has t' go in, arrr, it takes a little bit o' careful packin' t' get t' nose cone t' go all t' way down. Avast! If you pack t' chute compactly, you can just fit everythin' in. Begad! Because o' t' piston, no waddin' is needed but you have t' be careful with t' ejection charge. Aye aye! Begad! Like all piston ejection systems, if you go overboard on t' black power, you'll damage t' piston. Begad! Aerotech gives you some guidelines t' go by. Also, because you can use both medium and high power engines, thar are 2 engine spacers you may need t' get t' engine hook t' click in where it should. Also, Aerotech recommends you use 1" maskin' tape t' seal t' engine in place t' ensure thar be enough pressure t' eject t' piston.

Recovery:
Recovery is usin' a standard 22" yellow Aerotech 'chute. Avast, me hearties, me proud beauty! Blimey! T' shock cord length and 'chute size are adequate for this rocket. Aye aye! Avast! Blimey! On its first flight, t' aft o' t' body tube had some minor dents in it. Avast, me proud beauty! I don't know where they came from, arrr, matey, either t' nose cone or piston must o' hit it after ejection. Aye aye! T' engine is recessed a good bit in this design and therefore t' body tube at t' bottom o' t' rocket is a little bit weak. Avast, me proud beauty! Ya scallywag! Blimey! I would rate recovery 4/5 because o' t' body tube damage and care needed t' pack everything.

Flight Rating: 4

Summary:
This is a nice short and fat rocket that many people will like. Blimey! It will fly high power or medium power motors. Arrr! Avast! With a G64, shiver me timbers, about 800', ya bilge rat, up t' about 2800' with an H210. Arrr! Ahoy! It uses a piston ejection system so no waddin' or other protection is needed. It has through t' wall and t' t' engine fin mountin' which makes for a strong design. Aye aye! I have never lost a fin on an Aerotech despite some hard landings. Avast, me proud beauty! Arrr! T' shock cord is exposed t' t' motor blast and will dry out and fail over time. Ahoy! Unlike other rockets, it is easy t' replace t' cord in this rocket. A little bit o' care is needed in usin' bp for t' ejection and in t' packin' o' t' shock cord, arrr, piston and chute. Well, arrr, blow me down! If you follow t' paint scheme suggested by Aerotech, you'll have a very bright and colorful Level 1 rocket capable o' flyin' on G engines. I would rate this rocket overall 4.5/5 for all t' reasons stated above.

Overall Rating: 4