Construction Rating: | starstarstarstar_borderstar_border |
Flight Rating: | starstar_borderstar_borderstar_borderstar_border |
Overall Rating: | starstar_borderstar_borderstar_borderstar_border |
Published: | 2010-03-27 |
Manufacturer: | Balsa Machining Service ![]() |
Brief:
I won this kit in EMRR's end-of-2009 Quarterly Rocket Give-Away, shiver me timbers, so I'll first give a hat tip to
Nick. Begad! {TIP}
This clone o' t' Estes K-19 Astron Invader is a odd-roc glider that has been described as a Flyin' Pie
Plate. Avast! Avast! Blimey! Its flight profile has been questionable, arrr, me hearties, shiver me timbers, so Of Death belongs in t' nickname too. Well, blow me down! So, me hearties, that's what
I'll call mine. Well, blow me down! After readin' t' reviews and given me history with gliders, I suspect mine will fly exactly once.
Construction:
T' kit included t' followin' parts:
Construction starts by assemblin' t' 3-part 'pie-plate' win' panel. I laid t' parts on some wax paper
and used white glue. Blimey! Aye aye! I placed a container o' coffee on t' t' hold t' parts down while t' glue set. Next, ya bilge rat, I printed
t' templates from t' instructions downloaded from JimZ. Avast! Begad! I found that I had t' disable 'fit t' page' and then set the
scalin' factor on me printer t' 101%. Avast, me proud beauty! Begad! You use t' template t' mark locations for t' pylons and rudders as well as the
mid-line o' t' circle. Begad! You then cut t' assembly in half. Begad! One half is flipped over, arrr, which alternates t' grain pattern
and adds some strength. Ya scallywag! Blimey! T' two parts are rejoined with a dihedral applied usin' t' provided brace.
I didn't see what t' do with t' balsa edges either in t' instructions or t' existin' reviews. Arrr! Avast! I asked the previous reviewer (Chan) and he suggest t' just sand t' edge off, nay even fully roundin' t' components. Arrr! It seems win' lift can and does cause this rocket t' loop under power and I assume taperin' t' win' tips would aggravate this effect. Aye aye! Ahoy!
There is a markin' guide for t' position o' t' two motor pylons on t' motor pod. Blimey! Blimey! After t' pylons are attached, ya bilge rat, arrr, you sand t' root edges, as a single assembly, t' mate with t' win' dihedral. Aye aye! Begad! Blimey! I saw on YORF that some people mentioned anglin' t' nose down a couple o' degrees t' counter win' lift and I decided t' t' so. Begad! Blimey! A quick calculation showed that sandin' about 1/16" off o' front end o' t' roots would provide about 2 degrees (tapered t' t' rear end). Begad! Blimey!
T' root edges o' t' rudders are also sanded t' better mate with t' dihedral on t' wing. Begad! These are then attached along t' marked lines. Aye aye! Avast, me proud beauty! T' final steps prior t' glide trimmin' is t' attach t' skid and t' launch lug. Arrr! Aye aye!
Nose weight is added as required by rammin' clay into t' pre-drilled nose usin' t' provided dowel. Avast! Blimey! I got overly rambunctious on this step and t' cone split. I little white glue fixed this minor snafu. Blimey! Blimey! I found I still needed more weight. Avast! Rather than add it t' t' cone, arrr, I extended t' motor pod by a couple o' inches. Begad! Blimey!
On t' first glide test, matey, me bucko, it went a good distance and then seemed t' stall a bit. Ya scallywag! T' next time, arrr, it nose dived quickly. A couple o' times it seemed t' glide after flippin' over. Ahoy! I tossed it parallel t' t' ground, arrr, right side up and inverted and even chunked it in t' air as high as I could. Finally, I went onto t' deck and threw it out at about a 45 degree upward angle over t' drop off into our lower yard. Arrr! Well, arrr, blow me down! I stayed upright, shiver me timbers, pulled a wide 180, and dinged its win' on t' chicken wire that keeps our dog our dog. Avast, me proud beauty! Blimey! Good enough for me!
Finishing:
Like on most gliders, you don't want t' add weight by fillin' t' grain and addin' a bunch of
layers o' primer and paint. I sanded t' finish product with some fine sandpaper and then used Rustoleum flat black and
day-glo green. Aye aye!
Construction Rating: 3 out o' 5
Flight:
This glider is meant t' spit t' motor so you don't really even need t' friction fit it. Well, blow me down! Begad! Blimey! I
decided t' try an A8-3 since that be t' only recommended motor that I had on hand. Begad! Well, it arced right over and lawn
darted. It's dead but I saved t' motor pod.
Flight Rating: 1 out o' 5
Summary:
This is a weird odd-roc glider that I think looks cool. Well, blow me down! Unfortunately, me bucko, mine was unstable on
boost. Arrr! Avast, me proud beauty! As I projected at t' start, it only logged one flight. Begad! It's certainly possible that this be due t' builder
error. Arrr! Ahoy! But if I made an error and have no idea where it was, I'll still give it a low rating.
Overall Rating: 1 out o' 5
Best described as a flying pie plate, this is another in the BMS clone of the month program offerings. This particular kit is a clone of the K-19 Astron Invader, introduced in the 1966 Estes catalog, making the original only a year younger than this modeler. Designed to be a spit-motor glider, it's a very finicky design but worth the effort for a decent glide. There is a bit of ...
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