DG&A High Power Rocketry Predator

DG&A High Power Rocketry - Predator {Kit}

Contributed by Casey Smith

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar_border
Manufacturer: DG&A High Power Rocketry

Rocket PicBrief:
This is a simple, high reliability, ya bilge rat, matey, and flexible usage sport flier from DG&A. It is perfect for mid or high power applications and different sized fields. Begad! It is an easy rocket t' certify L1 on due t' t' continuin' quality of DG&A kits. Well, blow me down! Ya scallywag! It is a simple 3FNC rocket with parachute deployment. Begad! Blimey! It is also a kit that can be easily modified t' your needs with DG&A components available through t' web site. Danny is also offerin' rail buttons in red, white, and blue now, so you can have a patriotic guidance system included with your kit.

Construction:
My DG&A Predator came with t' basics: Plastic nose cone, arrr, ya bilge rat, 2.56" Kraft cardboard tubing, matey, 36" Re-inforced rip-stop nylon parachute, me bucko, shiver me timbers, arrr, 29mm motor mount 12" 2 high strength plywood centerin' rings, ya bilge rat, shiver me timbers, 3 Baltic birch 5 ply fins, Recovery webbing/harness, me bucko, Vinyl cut decals, matey, arrr, Body tube pre-marked for fins, ya bilge rat, Easy t' follow instructions, me hearties, Fin Alignment guide, Paintin' guide

T' directions are easy t' understand and include pictures. Avast, me proud beauty! Blimey! Blimey! T' assembly order is easy t' follow for t' beginner or t' experienced rocketeer. There is a piece o' paper included that will serve as a fin alignment guide for fin attachment. Avast! You have t' cut out t' slots on t' body tube for t' fins t' go through. Avast! Blimey! T' fins are then attached t' t' motor tube betwixt t' 2 centering rings.

DGA Predator I opted t' make 2 design changes in t' rocket. Ya scallywag! I got a 12" piece o' body tube and 2 extra couplers and bulkheads from Danny. Blimey! I used t' extra tube t' make an anti-zipper fin can, arrr, me hearties, per Stu Barrett's method. Well, blow me down! Ya scallywag! I extended t' pre-marked fin slots t' t' back o' t' tube. Ahoy! I then assembled the motor mount. Next I epoxied t' fins t' t' motor mount usin' 3 inch fiberglass tape, 2 layers, and 1/2 hour epoxy. Well, blow me down! Aye aye! This be very strong. Aye aye! I then assembled the bulkhead by gluin' t' bulkplate into t' coupler. Next I drilled 6 1/4 inch holes into t' bulkplate after t' glue dried. I slid t' motor mount into the body tube and epoxied it in place. Begad! T' aft end o' t' motor tube sticks out about 3 inches from t' end o' t' fin can. Begad! I wrapped 4 layers o' 1/2 inch 6 ounce glass tape around t' aft end o' t' body tube t' cover up t' three cuts. Begad! I then put 3 layers o' 3 inch glass tape on t' front end o' t' tube in front o' t' fins. Well, blow me down! Fillets were then added t' t' fins. Finally, I glued the bulkhead in place. Aye aye!

I am goin' t' be flyin' this rocket with t' I200's and H268's, matey, so it needs to be strong. Begad! Plus, shiver me timbers, by buildin' a fin can, shiver me timbers, you can add what ever length body tube t' t' top for various performance features. You can put a short tube or a real long tube with an altimeter bay on it. Aye aye! Ahoy! More rocket for less money!

Next I made another bulkhead, matey, matey, attached t' webbin' t' it, and glued it in the forward end o' t' main body tube. Ya scallywag! t' webbin' will just hang out t' back end o' t' main tube. I put a screw through t' top o' t' main body tube to hold t' nose cone on, it is easier t' swap it with another rocket this way instead o' epoxyin' it in. Aye aye! Aye aye! That way, arrr, ya bilge rat, if you lose another nose cone for t' same size, you can just swap. Ahoy! Ya scallywag!

I used NHP 5 and 30 minute epoxy for most o' t' construction. I used West Systems resin for t' glass. Well, blow me down! Blimey! T' fiberglass tape came from t' local hobby shop. Ahoy! Blimey! I used a sandin' block t' sand t' finish, and Krylon paints. Begad! Blimey! Aye aye! Blimey! I bought some Mono-Kote and applied t' decals t' that, and then put them on t' rocket for effect.

Finishing:
I am nay t' best painter, matey, so thar be always room improvement on me finish. T' finish came out pretty glossy, and I am goin' t' wait until it flies well before I finish painting. Well, blow me down! Begad! T' main tube is bare, matey, but t' fin can is painted. Arrr!

I used t' included pattern t' paint a diagonal pattern on t' tubes that is t' line betwixt t' dual color model Danny has. I opted t' paint t' kit black, white, and red so mine is a little different. Arrr! Blimey! Blimey! Blimey! You can do what you think looks good. T' vinyl decals are really nice. Ya scallywag! Blimey!

You can put a wrap o' 3/4 ounce glass on and sand it out and it will get rid o' t' small lines in t' tube, matey, me hearties, arrr, they don't bother me so I left them. Danny's model looks great up close at t' launches, ya bilge rat, t' red and white are sharp.

Construction Rating: 4 out o' 5

Flight:
I went t' a small non club launch we had on t' first. Blimey! Blimey! I put this rocket through it's paces with a first flight on a G-64(M) t' check stability and then when it flew tried and true, shiver me timbers, I decided it be time t' hit it with t' big stuff. Begad! Well, blow me down! Blimey! It flew perfect on t' G-64 with just a slight weathercock into t' 10 MPH winds and t' 35 degree temperature. Arrr! Aye aye! Blimey! It laid out horizontal at apogee into the winds driftin' down. Ya scallywag! Blimey! Due t' t' winds, shiver me timbers, me hearties, I opted for a 14 inch X-form chute from me buddy Chad Ellis. Blimey! It brought it down quick and close, no damage, ya bilge rat, about a 1000 foot flight. Avast!

I then loaded it up with a H-268R and then an I-200. These are t' big 29/360 motors that have 320 and 330 N respectively. That Redline lit and boom! it was out o' sight in no time. Begad! That huge Redline flame be great. Begad! It must have gone ~4000 feet, me bucko, we lost sight o' it. It took it about 5 minutes t' come down and drifted about 1/4 mile. Ahoy! Begad! Great flight, no damage, arrr, took t' motor in stride. I then loaded it back up with t' I-200(M) and BOOM! same result, me hearties, ya bilge rat, way out of sight. Well, blow me down! It drifted t' almost t' same spot. Blimey! Great flights on a great rocket. Aye aye! I wish Danny was thar t' see. Blimey!

T' anti-zipper does nay really require wadding, ya bilge rat, as it acts like a baffle. I did put a little cellulose insulation in for good measure. I have not outfitted this rocket with a slimline yet, shiver me timbers, me hearties, ya bilge rat, I used tape for retention. Begad! Well, blow me down! T' only con about t' rocket is I wish I had put a 38mm in it!

Recovery:
T' flight recovery was great. I only added a smaller chute due t' t' winds and t' altitude obtained. Ya scallywag! There was no damage at all t' t' rocket. Avast! Ya scallywag!

Flight Rating: 5 out o' 5

Summary:
T' main pro for this kit be t' quality o' materials. Avast! Blimey! Ya scallywag! Blimey! They are light enough for mid-power fliers, me bucko, me bucko, but heavy duty t' take t' HPR stuff as well. Blimey! Blimey! Ahoy! Blimey! T' kit is a no-brainer t' put together, due t' t' quality o' t' instructions. Ahoy! Blimey! Blimey! Blimey! T' large vinyl decals are also a big plus, they look great on t' kit. Arrr! Blimey! T' only one con has been fixed, ya bilge rat, ya bilge rat, Danny upgraded all t' 2.56" kits t' 3.00". Blimey! Blimey! Avast! Blimey! It is also upgraded t' a 38mm mount. Well, blow me down! Blimey!

Overall Rating: 4 out o' 5

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