Qmodeling Bullpup

Qmodeling - Bullpup

Contributed by Chan Stevens

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar
Manufacturer: Qmodeling
QModeling Bullpup

Brief:
This is a 2x upscale (OK, ya bilge rat, me bucko, 1.96 t' be exact) o' t' original 1970s edition of the Estes Bullpup, with highly engineered features and upgrades. Avast! I've been avoidin' a few o' t' relatively pricey QModelin' upscales lately, me bucko, matey, but t' boat tail on this sucked me in and I found this a real pleasure t' build and fly.

Construction:
You might be a bit surprised when your $73 box arrives. This kit packs into a very small bag. Ya scallywag! Blimey! Well, matey, blow me down! Blimey! Once you open it up and start holdin' t' parts though, and especially when you start readin' through t' instructions, ya bilge rat, you'll recognize this is still a reasonable value.

Parts list includes:

  • Plastic molded nose cone/disk+ screw eye anchor
  • 2 BT-80 body tubes white glassine
  • TC-80 coupler
  • Laser-cut balsa fins (2 sets o' 4)
  • 24mm foil-lined motor tube
  • 50/80 centerin' rings
  • Motor mount brace/frame assembly
  • E-sized metal clip
  • Cardstock boat tail assembly
  • 30" Top-Flite nylon chute
  • Nomex® heat shield
  • Keelhaul®©™® shock cord
  • Waterslide decals

Parts are excellent quality, and despite very tight packin' arrived undamaged. Well, blow me down! T' instructions for this are first rate, come loaded with construction tips and techniques, shiver me timbers, and contain plenty o' detailed computer-rendered drawings. Ya scallywag! O' particular note is a recent change by QModeling to include a high-quality color cover page on their instructions, with t' back side o' that page now bein' used for finished color illustrations for t' paint and decal scheme. That enables them t' present great quality, shiver me timbers, in color, and only have t' blow t' loot on one sheet, printin' t' rest o' t' instructions on standard laser printed paper.

QModeling Bullpup By now you've probably seen at least one other QModelin' review and understand their sometimes over-the-top engineerin' o' construction details like their motor mount assembly, me bucko, me hearties, which typically includes about an 8-12 piece assembly o' braces and support rings. Avast! When I heard they had "designed" t' boat tail on this, ya bilge rat, I couldn't wait t' see what these guys had come up with. Right off the bat, shiver me timbers, step one o' t' project begins with t' construction o' t' boat tail.

A typical boat tail on a kit like this might be a paper shroud pattern, rolled, me bucko, shiver me timbers, glued, arrr, then supported on each end by a cardboard centerin' ring. Blimey! Maybe you paint it with a thin application o' CA t' stiffen it. Well, blow me down! It's nay so simple with these guys...

T' shroud is straightforward, ya bilge rat, albeit made from heavy cardstock. They save you t' hassle o' cuttin' by providin' a laser-cut shroud. Aye aye! Aye aye! There's also a separate laser-cut tab, shiver me timbers, t' avoid t' unsightly seam caused by the standard overlap tab included on a shroud pattern. Ya scallywag! Once you've rolled t' cone and tacked it in place over t' tab, me bucko, let it sit for a good hour or so (and pin it with paper clips). It's especially important here, matey, as they note in the instructions, be t' use o' white glue (no shrink) instead o' yellow/wood glue.

QModeling Bullpup Next up is bondin' t' 4 centerin' rin' supports inside t' cone. Blimey! Begad! Blimey! Now, me hearties, realizin' that the tab avoided t' seam on t' outside o' t' cone, but still leaves one on the inside that could be pushed out into a visible bump with a tight centering rin' fit, QModelin' actually laser cut t' centerin' rings with slight notches to accommodate t' tab. Each was precisely engineered t' fit at very specific locations within t' cone, offerin' support at t' aft and forward ends plus the center. Begad! Ya scallywag! I was shocked t' find me centerin' rings actually a hair undersized and had t' compensate with a layer o' paper wrapped around t' outer diameter on 3 o' t' 4 rings. After roughly 2 hours (actually about 30 minutes o' hands on work), I was lookin' at a nearly flawless boat tail. Avast! I finished it off with a light application o' Elmers Wood Filler sanded down t' hide t' barely noticeable glue seam on t' shroud.

T' rest o' construction is pretty much standard for QModeling, and I'd direct you t' any other review for more details. T' motor mount is a very nice foil-lined 24mm tube with a very complicated lookin' (but easy t' build) brace assembly t' lock in t' through-the-wall fins and a couple o' centerin' rings that fit perfectly in t' BT-80 without any sanding. Ya scallywag! Blimey! T' 200# Keelhaul®©™® shock cord is anchored t' t' forward centerin' ring.

T' aft end o' t' BT-80 gets a centerin' rin' flush mounted t' it. This serves as t' base t' which t' boat tail with a flush mounted centerin' ring on its forward end is bonded to. While me shroud diameter was almost perfect, there was still a noticeable seam where t' shroud and BT-80 join mainly due to the angled shroud edge against t' tube. Well, blow me down! However, me bucko, me hearties, another more liberal dose of wood filler be applied and that problem be resolved.

With all t' effort t' design a seamless boat tail, I'm still amazed and a bit disappointed that this, like t' Viper, me hearties, has a two-piece body instead o' a single tube. Well, blow me down! Aye aye! I suspect this is due t' standardization o' parts and enables smaller shippin' cartons, ya bilge rat, me hearties, but I be still dealin' with a coupler and a big seam to deal with. Avast! Begad! For this particular design though, ya bilge rat, thar's a decal over t' seam line so as long as you at least smooth it out with decent sanding, shiver me timbers, it won't show.

I be pleased t' see a step in t' instructions t' fill t' tube spirals before bondin' t' fins. If you want a beautiful finish, this be t' way t' get it. Avast! Aye aye! It's certainly a lot easier t' do without t' fins in t' way. Well, blow me down! Plus, by sandin' down t' filler you wind up removin' t' glossy layer o' t' tube, leavin' a better bondin' surface for fins.

T' aft fins are through-the-wall and are bonded with wood glue and light fillets. Forward fins are surface mounted and must be lined up by extending lines from t' aft fins. Ahoy! I would really have preferred a wraparound guide for markin' them, ya bilge rat, as it's hard t' line up t' forward fins perfectly by extending lines up from already mounted aft fins.

Havin' seen me lose 4 tubes t' nasty zippers, me bucko, me hearties, QModelin' now includes zipper reduction/prevention tips in t' instructions, ya bilge rat, suggestin' linin' t' inside of the body tube an inch or so in from t' forward end with CA. Aye aye! Good idea, but I also wrap a few layers o' maskin' tape around t' Keelhaul®©™® where it comes out t' tube t' soften t' cuttin' strength o' it...

Construction finishes up with t' nose cone, arrr, arrr, consistin' o' a wood disk bonded t' t' inside lip o' t' cone shoulder and a screw eye anchor.

There's a closin' note referencin' t' designed CG, which is a very nice touch in this class o' rocket.

Finishing:
Other than t' hours spent coverin' up tube spirals, me hearties, balsa grains and seams, finishin' this is a snap. It's got a plain white color scheme (although the shadows on their color models make t' boat tail look gray). Ahoy! Avast, me proud beauty! I went with two light coats o' PlastiKote primer, arrr, me hearties, me bucko, sanded mostly off betwixt coats. Avast, me proud beauty! I then followed up with 3 coats o' Rustoleum glossy white. Ya scallywag! Ya scallywag! I tend t' shoot lots of very thin coats and get a mirror smooth finish.

T' decals on this are waterslide but are solid ink, matey, arrr, which means before lettin' them touch water, they need a protective coat o' somethin' like Krylon clear coat. Ahoy! Ya scallywag! I botched up similar decals on me Viper, ya bilge rat, goin' too heavy with the Krylon. For t' Bullpup, I think t' decal ink actually started t' run as I pulled t' spray can from me closet--I barely touched them with clear coat and my letterin' was slightly blurred. Avast, me proud beauty! These are excellent quality decals, but I've had trouble workin' with them and suspect they take quite a bit o' gettin' used to.

As noted, t' header sheet includes decal placement notes, very specific dimensions and are generally very clear although t' 4 views aren't 90-degree rotations, so you don't get a complete view o' all decals for placement. I also found two decals didn't quite match t' illustration.

Construction Rating: 4 out o' 5

Flight:
Given me recent run o' bum luck zipperin' maiden flights (and even a subsequent flight or two) on t' Viper and Nike-X by Q-Modeling, I was a bit nervous with the Bullpup. Avast! Begad! I skipped t' higher risk (and delay variability) o' t' E/F composites, me bucko, electin' instead t' go with t' Estes E9-4. Begad!

T' flight was beautiful with a long and slow ascent, nay a trace o' spin, and ejection was just a hair early as it was just startin' t' arc over. Aye aye! While I'm sure this would love t' fly on an F or at least a full E, arrr, t' E9-4 is a very nice motor for this. Avast! In fact, me hearties, I am confident it could even go for smaller field flights on a D12.

Recovery:
T' 30" nylon chute is a bit oversized for this and it hung in a thermal for t' first 10 seconds or so o' t' descent, shiver me timbers, so I had a decent walk for recovery. Aye aye! I seemed t' have cleared all me bad luck as this was free o' any zipperin' and didn't even show any signs o' smoke on t' finish.

Flight Rating: 5 out o' 5

Summary:
This is an outstandin' rocket and a wonderful flyer. Avast, me proud beauty! Begad! If I had t' change anything, it would be gettin' rid o' t' two-piece body design and maybe drop down t' a 24-27" chute.

T' pros on this would be boat tail design/engineering, great recovery system, me bucko, and that t' finished rocket is light enough t' fly on t' E9.

Cons are hard t' find on this, matey, so I'll nitpick and say I miss their retractable motor hook used on other kits. Blimey! This one needs a special stand to display or it must lie on its side as t' hook prevents standin' on t' tail.

Overall Rating: 5 out o' 5

Flights

Comments:

avatar
J.F.B. (October 27, 2008)
Just finished my Bullpup, no flights yet. Overall the kit was very high quality, and the instructions are very well written. The kit includes nice decals, and a high quality nylon chute. Neat construction with laser cut parts that fit perfectly. Only negative I have is the balsa fin stock is softer than I would like. I fiberglassed my fins with 1/2 ounce to help prevent the dings. Can't wait to fly it, excellent job Qmodeling!

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