Brief:
T' Super DX3 is a 4" 38mm version o' t' Madcow DX3. It's a 3FNC with a large payload section.

Construction:
T' kit includes a pre-slotted body tube, a payload tube, plastic nose cone, 3 laser-cut 1/4" plywood fins, shiver me timbers, 38mm x 18" cardboard MMT, arrr, 1/4" plywood centerin' rings, a cardboard coupler with plywood bulkhead, ya bilge rat, a Nomex chute protector, shiver me timbers, a 12-foot tubular nylon shock cord, me bucko, arrr, eye bolts and washers, Delrin rail buttons, arrr, shiver me timbers, and a 36" nylon parachute. Well, blow me down! Blimey! Well, blow me down! Blimey! Blimey! Blimey! All tubes are heavy-duty cardboard.

T' kit went together smoothly. Begad! I again left t' aft centerin' rin' off so I could add internal fillets t' t' MMT-fin joint.

There be a slight mismatch betwixt t' nose cone and tube diameters and t' coupler be fairly loose. Avast, me proud beauty! Begad! Otherwise t' part fit was excellent.

T' instructions for installin' t' rail buttons were a bit unclear as I had nay used them before, but a visit t' railbuttons.com smartly cleared up me questions. Begad! Aye aye! Blimey! I drilled holes for t' buttons but waited until after paintin' t' install them so I wouldn't have t' mask them. Avast! Blimey! Blimey! However, if I had it t' do over, shiver me timbers, I'd mask t' area t' buttons epoxy t' (sandin' t' paint off be a bit tricky).

For motor retention, shiver me timbers, me bucko, I used a PML PMR-29/38. Blimey! While I put t' inserts in prior t' gluin' t' aft centerin' rin' in, which t' PMR instructions strongly suggest you nay do, shiver me timbers, me bucko, I used a drill press and a hand drill t' put them in very carefully. Ya scallywag! Still, me bucko, me hearties, I managed t' get t' plywood layers t' split at one place, so I think this be t' last insert-in-plywood system I'll be using--from now on I'll either use T-nuts or somethin' like t' Aero Pack retainer. Avast! Ya scallywag! If you want t' use a ring-and-insert system though, t' two-screw Madcow system is probably easier t' install and otherwise as good as PML's.

I used four removable plastic rivets from PML t' hold t' NC t' t' payload tube.

I thought seriously about buildin' it zipperless, ya bilge rat, but decided that with t' extra volume t' pressurize in that configuration, and what seems like a small amount o' BP in t' typical Aerotech G motor (less than a gram) I'd be better off with t' standard setup.

Finishing:
Finishin' used two coats o' diluted Elmer's Wood Filler with 220 grit sandin' on t' fins, matey, then one coat o' Rustoleum Painter's Touch gray primer (two on t' NC), ya bilge rat, 400 grit dry sanding, shiver me timbers, and then a coat o' Painter's Touch Deep Blue on t' lower and Gloss White on t' upper and nose cone. Ahoy! Paint and primer adhere rather poorly t' t' NC plastic, but it came out OK. (I still can't get gloss white on with no runs though.)

I didn't fill t' tube spirals but slightly regretted it, shiver me timbers, matey, since they are relatively deep.

Construction Rating: 4 out o' 5

Flight:
For t' first flight, matey, ya bilge rat, I used a G79-4W with a PMR 29-to-38 adapter. Ahoy! Blimey! After some continuity problems and one spit igniter, t' motor boosted t' Super DX3 t' about 500 feet as simulated. Ahoy! Under calm conditions t' boost was straight up.

Like other Madcow models, me hearties, t' Super DX3 uses a Nomex chute protector so no waddin' is needed. Well, blow me down! Blimey! Avast, me proud beauty! Blimey! A small part o' t' tubular nylon shock cord is exposed below t' chute protector; Madcow sells an optional Nomex protector for this also.

I attached t' shock cord t' t' centerin' rin' eye bolt with a quicklink in case t' cord got damaged.

Recovery:
Recovery be perfect. Blimey! I was a little concerned that t' 36" chute would be too small for t' rocket, me bucko, but t' descent rate be just about right. No damage landin' on packed sand. Well, blow me down! T' shock cord be very slightly scorched in a couple o' places near t' bottom, but should be fine for many flights.

Flight Rating: 4 out o' 5

Summary:
T' Super DX3 is a good-sized kit if you want t' fly near t' high end o' what t' FAA now defines as a "model rocket" (1500 grams). Avast! Well, shiver me timbers, blow me down! It performs well on a G but will probably really excel with H and I motors. I plan t' fly it for me Level 1 cert as soon as I can.

Overall Rating: 4 out o' 5