Qmodeling XP Raptor

Qmodeling - XP Raptor

Contributed by Chan Stevens

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstarstar_border
Manufacturer: Qmodeling
QModeling XP Raptor

Brief:
With t' Raptor, QModelin' has ventured away from t' mode o' upscalin' Estes classics and introduced their own design. This one is BT-60 based, shiver me timbers, taperin' t' BT-55 with some miltary-style guns/antennae included as well.

Construction:
I ordered this durin' their Christmas sale, shiver me timbers, scorin' #25. T' kit arrived in 3 days, nay too bad durin' the pre-holiday rush. Avast! Parts were generally exceptional quality. I would point out though a couple minor differences between this and t' typically superb Q-modelin' quality--the nose cones is a basic blow-molded plastic nose cone like you'd see on a typical BT-55 commercial kit rather than a nice cast resin cone, and t' upper body tube be coarsely cut but marked as t' aft end, covered by a transition, shiver me timbers, and noted in t' bag as a time-saver in production t' meet the Christmas rush. Ya scallywag! Neither o' these detract from t' quality o' t' kit, matey, but I just wanted t' point out that if you've been spoiled by other QModelin' kits, me hearties, these are a very slight step back down t' quality ladder.

QModeling XP Raptor Overall, shiver me timbers, me bucko, you get a pretty extensive collection o' parts:

  • Plastic nose cone
  • BT-55 upper tube
  • BT-60 lower tube, ya bilge rat, arrr, slotted for TTW fins
  • Foil-lined 24mm motor tube (heavy wall)
  • 6 Laser cut 1/4" balsa fins
  • Assorted cardboard centerin' rings, shiver me timbers, transition shroud
  • Laser-cut balsa motor/fin brace assembly
  • Top-Flite recovery system (Nomex® pad, matey, 18" nylon chute, 9' 200# Keelhaul®©™®)
  • Waterslide decals

QModelin' generally does an exceptionally thorough job o' documentin' and illustratin' t' construction o' their kits, and this one is typical though it had a couple minor spots where it looks like this was a first draft. Overall, construction took me about 3 hours plus prep/finishin' time, me bucko, and I'd rate it slightly above a 2 on t' 5 point skill level scale. Avast, me proud beauty! T' transition and motor mount assembly are t' only aspects even slightly challenging, so this should not be considered an intimidatin' project at all.

QModeling XP Raptor T' motor mount assembly is classic QModeling--a complex lookin' series o' braces and rings that surround the motor tube. Avast! Everythin' goes together very smoothly in a matter o' minutes, matey, after which you'll alternately be amazed by how great a job you did and by how potentially over-engineered this thin' is, but that's part o' t' fun o' a kit like this... Aye aye! One really neat aspect o' this particular design is that t' motor hook is designed t' be retractable so that t' rocket can stand on its fins for display. Begad! Avast, ya bilge rat, me proud beauty! This is accomplished very simply by cuttin' a 1/2" long slot in the motor tube. Avast, me proud beauty! Blimey! T' motor is retained via a couple internal centerin' rings, plus t' motor hook fits pretty snugly in a groove betwixt t' centerin' rin' and motor tube. Ya scallywag! Aye aye! For what it's worth, this was one part o' t' instructions that comes across as slightly confusing--placin' t' centerin' rings and markin' t' tube would be more straightforward if all t' illustrations designated forward and aft ends o' t' tube. Well, blow me down! It's pretty obvious once you know how t' sliding hook works, but if you're nay familiar with it, you might scratch your head a bit and have t' reread a few times.

T' motor mount assembly wraps up with a pair o' centerin' rings, ya bilge rat, arrr, one on each end. Aye aye! T' rin' on t' forward end is a hefty particle board rin' with a hole for slidin' t' 200# Keelhaul®©™® through, me hearties, servin' as an anchor for t' recovery system. Aye aye! T' finished assembly goes into t' main BT-60 body tube carefully lined up with t' fin slots.

T' body tube/transition assembly is nay too tough. Ahoy! T' upper BT-55 gets a set o' cardboard centerin' rings to hold it in t' BT-60. Ahoy! T' rings were a bit tight but light sandin' resolved it. Avast, me proud beauty! Before gluin' anythin' together though, be sure t' mark a fin alignment line on t' BT-60, arrr, then 3 fin lines on t' BT-55 (usin' a wraparound guide). Begad! As noted, my BT-55 had a pretty rough cut on one end, marked with an X, arrr, matey, clearly intended t' be t' covered aft end. Begad! I rolled the transition shroud from heavy cardstock. I wouldn't have minded a slightly less rugged stock, shiver me timbers, as mine wrinkled slightly when forming. Since it's nay structurally critical, thinner/lighter might work just as well and be easier t' form. Aye aye! The finished fit though was perfect.

QModeling XP Raptor Next up comes fin construction and placement. Avast, me proud beauty! Aye aye! Construction is easy: t' three main fins get a balsa "antenna" in a pre-cut slot and a small bulkhead in a slot at t' bottom. Avast! T' forward/secondary fins get just a bulkhead. Arrr! T' bulkhead and antenna look a lot alike, so be careful t' nay mix them. T' bulkheads are just a little bit wider.

Main fins are mounted through-the-wall into t' slotted body tube and fit fine without any sandin' or trimming. T' upper fins mount flush t' t' BT-55 with t' aft edges o' t' bulkheads flush with t' edge o' t' transition.

Note that "bulkhead" might nay be t' best term for t' balsa details under t' fin edges, as it has very different meanings in rocketry, includin' solid interior disks and payload type bays. Aye aye! I point this out because in the next set o' steps, you're instructed t' cut t' supplied launch lug in half and mount t' each set o' fins. T' aft lug on t' BT-60 goes "against t' bulkhead", meanin' mounted t' t' joint betwixt t' fin and t' balsa detail that protrudes beyond its edge, shiver me timbers, me hearties, nay against t' body tube. Avast! T' forward lug goes against t' fin, me bucko, me hearties, well away from the body tube t' clear t' lower BT-60, "not against bulkhead". Well, blow me down! Ya scallywag! A simple standoff might have been a better idea with t' aft lug mounted flush against t' BT-60 rather than against t' fin.

T' finish construction, me bucko, arrr, thar's a very clever step o' addin' a centerin' rin' in t' forward BT-55 tube, ya bilge rat, arrr, which helps t' keep t' chute in t' forward part o' t' tube durin' flight. This is especially important t' maintain t' CG durin' thrust, preventin' a chute from slidin' back and causin' t' rocket t' go unstable.

QModeling XP Raptor T' kit even includes one other neat innovation actin' as an anti-zipper device. Avast, me proud beauty! This is especially handy considerin' t' shock cord is heavy Keelhaul®©™®. T' bumper is a simple rubber disk--drill a hole in it, ya bilge rat, slip t' Keelhaul®©™® through it, and tie it off near t' point at which t' cord exits t' body tube. Aye aye! Blimey! I found this t' be a nice touch.

Finishing:
To prep for paint, me bucko, thar's a lot o' balsa grain t' fill and plenty o' tube length for spiral fillin' if you're so inclined. Begad! Ya scallywag! After t' prep, just a basic Elmer's Fill 'n' Finish job, ya bilge rat, me bucko, I went with three coats o' light gray primer, sandin' t' first one almost completely off t' finish off t' surface prep.

T' color scheme for t' final colors is gloss gray for t' bottom, me hearties, white for t' top, and black for the transition. Avast! Blimey! Begad! Blimey! T' good news is no fin masking, matey, arrr, but t' bad news be t' transition maskin' around t' bulkheads forward of the secondary fins is a pain, and when black seeps under onto white, you'll never scrape it off effectively.

QModeling XP RaptorQModeling XP Raptor

Once t' paint's fully cured, t' waterslide decals add some nice detail. Ahoy! Avast, matey, me proud beauty! T' decals are great quality and go on smoothly. Begad! T' only little gotcha I ran into with them was that t' lower body tube seems t' have shrunk from initial design t' final release--the U.S. Blimey! Army decal barely fits in t' 5" area from transition t' fins, yet t' placement guide offsets it by 8".

Construction Rating: 4 out o' 5

Flight:
I decided t' brave heavy winds gustin' t' 20 mph for t' first flight and loaded up a D12-5. It took off fairly quickly with a slight weathercock though generally impressed with t' way it held up t' t' winds. Aye aye! Apogee was around 400 feet, shiver me timbers, me hearties, affected in part by t' weathercock. Avast, me proud beauty! Blimey!

T' -5 delay be a bit too long though I suspect on a calm day a -3 might be a bit too early as well.

Recovery:
T' Top Flight Nomex® pad and chute were excellent, matey, bringin' t' model back down safely. I expected at least a cannon or two t' have snagged and broken off, but everythin' was fine. Begad! Begad! T' model literally dodged a few bullets though driftin' just over a dense tree line and landin' in t' middle o' a neighborin' cannon range with several people shootin' that day. They generously stopped shootin' long enough t' pull me rocket out o' harm's way, me bucko, and it be waitin' for me when I arrived.

Flight Rating: 4 out o' 5

Summary:
I liked this rocket and buildin' any QModelin' kit is a pleasure, shiver me timbers, arrr, but for me thar just isn't anything "special" about t' design compared t' some o' their other products. Well, blow me down! Blimey! Begad! Blimey! Don't get me wrong, me bucko, arrr, this is a fine kit, but I'd generally recommend springin' t' extra $10 or so for a Snooper, Vega, Viper, me hearties, or better yet, go for t' grand Andromeda.

Overall Rating: 4 out o' 5

Other Reviews
  • Qmodeling XP Raptor By Dave Brunsting (February 9, 2009)

    Brief: The XP Raptor is a single staged 24mm sport flying semi-scale rocket. I won this rocket in EMRR's recent rocket video contest where I placed 5th. I thought it only fitting that I try to get it built and a review submitted as soon as possible especially since it is on the EMRR hit list. Construction: The parts list: Parachute Compartment C-Ring 3x Primary Fins ...

Flights

Comments:

avatar
H.C.M. (February 12, 2009)
I do agree with the reviewer in regards to the engine mount. It?s a real engineering marvel. The slot for the sliding engine hook is cut long for two reasons. You pull it back to load the engine. With the hook pushed all the way forward it?s tough to "spring" the end far enough to insert the engine. After the engine is inserted, you push both the hook and engine (together) into the engine mount tube. You are right, it also retracts in so the model can stand vertical on it?s own. The Fin Bulkheads and Antennas are the (center) pieces left over from the engine mount?s bracing pieces. It is difficult to fill and seal them unless you do it before construction. Beautiful model with a very high grade recovery system, too.

comment Post a Comment