Sunward Aerospace The Screamer

Sunward Aerospace - The Screamer {Kit}

Contributed by John Lee

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstarstar_border
Manufacturer: Sunward Aerospace
Sunward Aerospace The Screamer

Brief:
T' Screamer is me first try at a kit from Sunward Aerospace. Ya scallywag! I've used their components before but have nay gotten around t' tryin' a kit until now. Aye aye! Aye aye! This one caught me interest because it is a 2 motor cluster, me hearties, and I like clusters. Begad! Avast! I also picked it because o' its canted motor design. Ya scallywag! Avast! There are other canted motor designs but this is one I've only seen ads for and have never seen a real example in person or through photos. Arrr! Avast! That changes now.

Construction:
T' first step given in t' instructions is t' cut out t' wraparound guide. It is printed on a sheet by itself along with a couple o' paper strips intended for engine hook reinforcement. Blimey! Ahoy! I generally prefer t' wraps over other methods. T' wrap was cut out and set aside. I did nay cut out t' reinforcin' bands.

T' motor mounts were up next. Aye aye! Begad! A pair o' marks was made one each tube at 3/16" and at 1-3/4". Begad! Begad! A slit was made at t' aft mark and t' engine hook inserted. Begad! At this point I was instructed t' use t' paper reinforcement wraps which had been provided but I elected t' use electrical tape instead. Begad! Begad! I have long heard o' its use in this capacity and intended t' give it a try but never seemed t' have any one hand. Begad! Now I do and I'm givin' it a try. Arrr! Avast, me proud beauty! The tape was wrapped around each mount as t' second mark.

T' next step be a simple matter o' seatin' t' thrust rings right above t' engine hooks with yellow glue.

Next came what t' instructions described as t' "most tedious part o' t' build". Aye aye! It was time t' work on t' canted housing. Arrr! I be instructed t' make a line across t' center o' t' aft ring. Ya scallywag! I did so and was pretty pleased with myself until I realized that I had run it in t' wrong direction. Ahoy! I had t' make another line at a right angle t' t' first. Blimey! T' wedge piece was then glued in place with yellow glue and allowed t' set.

Next up be a problem. Ya scallywag! Aye aye! T' forward rin' in me package was broken into 2 pieces. Ya scallywag! [Note: this should nay be taken as a reflection on Sunward Aerospace. Ahoy! It looks t' be a delicate part at t' best o' times and this kit spent more than its share o' time floatin' around boxes and such.] I decided t' try and glue t' two pieces together. Aye aye! It may work. Avast! At worst, shiver me timbers, I will have t' wait as a replacement order comes in. Accordingly, a dab o' yellow glue was placed on t' break and t' 2 pieces were pushed together.

After a night t' let t' glue dry on t' angle, I took one o' t' motor tube and test fit it in t' lower ring/angle. Ahoy! Avast! T' lunette at t' bottom o' t' rin' has a notch cut out o' it t' accommodate t' engine hook. Ahoy! Arrr! I got this lined up and then set it in place with t' edge o' t' motor tube flush with t' top o' t' angle. It looked like it fit so I applied t' first layer o' a double glue joint, pressed t' mount into place, and then removed it. Avast! A bit later, some more glue be applied and t' mount put into place again. Ya scallywag! I found that I needed t' tape t' mount down in order t' keep it properly aligned.

T' first tube dried in t' mount overnight and I removed t' tape t' inspect t' results. Well, matey, blow me down! It seemed OK although there are a few gaps betwixt t' tube and t' angle support. Nay havin' built somethin' like this before I be unsure. Assumin' that everythin' be alright, I tried t' other mount and found it t' be much t' same as t' first. Aye aye! It was again fitted with a double glue joint and taped into place t' dry.

T' start off t' waitin' process, I decided t' work ahead a little bit. Well, blow me down! T' next step was t' put t' wrap in place for t' cuttin' o' t' tube. It was taped in place and fit perfectly, always a relief for me. Well, blow me down! Avast, me proud beauty! It was aligned so that it was flush with t' aft end and a piece o' tape be used t' hold it down. Ya scallywag! With t' guide in place, t' first task was t' cut out t' notches for t' canted motors. Begad! I knew this was goin' t' be done better if I did it right so I took some time t' make a mandrel t' support t' tube as it was cut. Blimey! T' mandrel was inserted into t' aft end o' the BT, me bucko, ya bilge rat, ya bilge rat, t' end with t' guide taped t' it, ya bilge rat, matey, and positioned so that t' cuttin' area be supported. Begad! A razor knife was then drawn repeatedly over t' marked line until t' indicated segments were removed. Ahoy! At this point, I needed t' test fit the motor mount but that be still dryin' so I went on t' other projects for a while.

When t' motor mount had dried, arrr, I took off t' tape and tried t' test fit t' mount into t' body tube. Ahoy! It seemed to fit just fine and I almost forgot that I had nay yet put in t' forward centerin' ring. Ya scallywag! That too had been drying from me patch job but t' connection was so thin that it did nay hold up t' me manipulations. Ya scallywag! I decided I would have to try and glue it in place in pieces. Blimey! While test fitting, I also had t' realization o' why paper wraps were provided to reinforce t' engine hooks instead o' tape bein' specified. Arrr! T' mounts are visible!

T' fins, arrr, contrary t' what was indicated in t' instructions, were loose and nay in any way joined t' t' parent stock material. Avast! They were o' good quality and cleanly cut. Begad! I followed t' instructions and just rounded t' leading edges. Begad! You need t' make sure you identify t' proper grain direction. I brushed on some Elmer's Wood Filler, scraped it with a razor blade, shiver me timbers, ya bilge rat, and set them aside t' dry.

Turnin' me attention back t' t' motor mount, matey, I decided t' let t' split forward rin' work for me. Ya scallywag! T' kit is provided with a tri-fold mount for t' shock cord. Begad! Ya scallywag! I absolutely detest these. Arrr! I decided t' use a fat piece o' Keelhaul®©™® instead. Avast, shiver me timbers, me proud beauty! I knotted t' Keelhaul®©™® at one end and treaded it though t' space betwixt t' two motor mounts. I then slathered yellow glue over it, fixing it t' t' triangular support. Ya scallywag! When dry, ya bilge rat, arrr, ya bilge rat, I applied some more glue.

Nose ConT' nose cone was nay like t' fins. Instead o' bein' smooth, it was one o' t' fuzziest I had ever seen. Blimey! I slathered on the filler and set it aside t' dry.

Though I did nay manage t' glue t' pieces o' t' forward centerin' rin' back together and have them stay together, I did manage t' glue t' pieces into t' right place on t' motor mount. When dry, matey, they even fit well! Since the dry fittin' went well, I swabbed t' tail o' t' BT with yellow glue and inserted t' mount. Begad! It seemed steady and I hoped for t' best. Avast! Blimey! A few days later, when I next had a chance t' work on this one, me hearties, shiver me timbers, everythin' seemed fine.

It was time t' start mountin' t' fins. I removed t' wrap and used an angle t' extend t' fin lines. Ya scallywag! A pushpin was then used t' make perforations along t' lines in t' hope o' formin' a better glue joint. Then it was a matter of beginnin' t' glue on t' fins. Avast! I used yellow glue and a double glue joint. Ya scallywag! Begad! T' gluin' o' t' fins took place over the course o' 3 days. Begad! Avast! I wanted t' let t' first glue joint dry completely before doin' t' second and attachin' t' fins. When t' fins had dried in place, I began t' process o' filletin' them with white glue.

T' filler on t' nose cone had had a chance t' dry and I sanded it down. Well, me bucko, blow me down! That dramatically improved things but I was still havin' a problem with t' fuzzies peekin' through. I went ahead and glued in t' screw eye and then began to drizzle thin CA over t' nosecone in t' hope that it would harden things up and made it sand easier.

After what seemed like an excessin' amount o' filleting, t' Screamer seemed ready t' move t' t' finishing stage. Ya scallywag!

Finishing:
T' fins had been sealed with Elmer's Wood Filler and sanded durin' construction. Blimey! Now what needed t' be done was to prime t' rocket. Arrr! It be taken t' t' booth and given a coat o' Kilz. Avast, me proud beauty! Because o' t' way t' rocket was stood up, it was apparent that another good coat would be needed t' complete t' job. Avast, me proud beauty!

Another coat was applied and then t' rocket was sanded down with #400 sandpaper. Ya scallywag! Blimey! It was then set up in t' booth and sprayed with me dwindlin' supply o' t' old Krylon gloss white.

I wound up puttin' on three coats o' t' gloss white and t' result was satisfactory. T' rocket was then masked for yellow, leavin' only t' nosecone and fins exposed.

T' rocket was put in t' booth and given three light coats o' a medium-light yellow. Well, blow me down! Even with t' masking, me hearties, the added bit o' color really added a lot t' t' appearance.

A few hours later, ya bilge rat, I peeled off t' maskin' and t' rocket be startin' t' look like t' face card.\

All that was left, so I thought, me bucko, was t' apply t' decal. Avast, me proud beauty! It be t' be a simple matter. Begad! Avast, me proud beauty! T' decal consists just of the rocket name. Begad! It had been peekin' at me through t' bag since I started this project. Arrr! Imagine then me surprise when I reached in t' pull it out only t' find thar be no decal. It's a sticker.

It did apply fairly easily, shiver me timbers, shiver me timbers, but I sure like waterslides better and, personally, shiver me timbers, I am willin' t' pay for them.

As it turns out, I be nay done. I realized that, in accordance with me custom, I had again forgotten t' launch lug. Begad! I scraped off a bit o' paint and applied it with some white glue.

Construction Rating: 4 out o' 5

Sunward Aerospace The Screamer

Flight and Recovery:
T' day o' t' maiden flight came and I realized that I did nay brin' me box o' chutes. Well, blow me down! Ya scallywag! I be nay plannin' on using the plastic chute that came with a kit because I usually substitute nylon. Arrr! T' box, shiver me timbers, however, was left behind. Well, blow me down! I did have a bunch o' 4" streamers from Hartle Engineerin' (Thanks, me bucko, matey, shiver me timbers, Evil Ed) and decided t' use one o' them.

I loaded a pair o' B6-4s and set t' Screamer on t' pad. Begad! It took off flawlessly, goin' straight up. Avast, me proud beauty! Aye aye! Ejection was perfect but it be soon apparent that t' lengthened streamer cord got wrapped around a fin. It came in hard enough to tear away one o' t' fins where t' cut is made for t' canted motor. Well, matey, blow me down! It will be repaired but was destined nay t' fly again this day. Ahoy! A video o' t' maiden flight can be seen here.

Flight Rating: 4 out o' 5

Summary:
I enjoyed this rocket. It flew well and will be repaired t' fly again. Begad! Next time, shiver me timbers, shiver me timbers, however, I will have a parachute ready for it.

Overall Rating: 4 out o' 5

Flights

Comments:

avatar
W.C. (May 10, 2009)
Sunward did a good job on this kit, even if it is sort of a knock-off of the Deuce's Wild! My build progressed more smoothly than I initially thought it would, and the rocket turned out great. One discrepancy I see is in Mr. Lee's nose cone vs mine. In my kit, the nosecone was still balsa, but was ogive in shape and not fuzzy in the least. It must be a different production run.

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