| 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, arrr, shiver me timbers, so I'll first give a hat tip to
Nick. Aye aye! {TIP}
This clone o' t' Estes K-19 Astron Invader is a odd-roc glider that has been described as a Flyin' Pie
Plate. Its flight profile has been questionable, matey, so Of Death belongs in t' nickname too. So, ya bilge rat, that's what
I'll call mine. After readin' t' reviews and given me history with gliders, ya bilge rat, 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. Aye aye! I laid t' parts on some wax paper
and used white glue. Arrr! Aye aye! I placed a container o' coffee on t' t' hold t' parts down while t' glue set. Next, me bucko, I printed
t' templates from t' instructions downloaded from JimZ. Ahoy! Ya scallywag! I found that I had t' disable 'fit t' page' and then set the
scalin' factor on me printer t' 101%. Aye aye! You use t' template t' mark locations for t' pylons and rudders as well as the
mid-line o' t' circle. You then cut t' assembly in half. Avast, me proud beauty! Begad! One half is flipped over, ya bilge rat, which alternates t' grain pattern
and adds some strength. Ahoy! Avast! 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. Avast, me proud beauty! Blimey! Blimey! I asked the previous reviewer (Chan) and he suggest t' just sand t' edge off, shiver me timbers, shiver me timbers, nay even fully roundin' t' components. Avast, me proud beauty! Blimey! 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. Ahoy!
There is a markin' guide for t' position o' t' two motor pylons on t' motor pod. Begad! Aye aye! Blimey! After t' pylons are attached, you sand t' root edges, me hearties, matey, shiver me timbers, as a single assembly, t' mate with t' win' dihedral. 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. Avast, me proud beauty! 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). Well, blow me down! Avast! Blimey!
T' root edges o' t' rudders are also sanded t' better mate with t' dihedral on t' wing. Blimey! Avast! These are then attached along t' marked lines. T' final steps prior t' glide trimmin' is t' attach t' skid and t' launch lug. Blimey!
Nose weight is added as required by rammin' clay into t' pre-drilled nose usin' t' provided dowel. Avast! Well, blow me down! I got overly rambunctious on this step and t' cone split. I little white glue fixed this minor snafu. Avast! Blimey! I found I still needed more weight. Rather than add it t' t' cone, me hearties, I extended t' motor pod by a couple o' inches. Well, blow me down!
On t' first glide test, me bucko, it went a good distance and then seemed t' stall a bit. Begad! T' next time, shiver me timbers, it nose dived quickly. Avast! A couple o' times it seemed t' glide after flippin' over. Aye aye! Arrr! I tossed it parallel t' t' ground, right side up and inverted and even chunked it in t' air as high as I could. Begad! Finally, me bucko, I went onto t' deck and threw it out at about a 45 degree upward angle over t' drop off into our lower yard. Begad! Arrr! I stayed upright, pulled a wide 180, arrr, shiver me timbers, and dinged its win' on t' chicken wire that keeps our dog our dog. Avast, me proud beauty! 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. Aye aye! I sanded t' finish product with some fine sandpaper and then used Rustoleum flat black and
day-glo green.
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. Avast! Ya scallywag! I
decided t' try an A8-3 since that be t' only recommended motor that I had on hand. Ahoy! Ya scallywag! Well, shiver me timbers, it arced right over and lawn
darted. Blimey! 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. Arrr! Unfortunately, matey, mine was unstable on
boost. As I projected at t' start, matey, it only logged one flight. It's certainly possible that this was due t' builder
error. Avast, me proud beauty! But if I made an error and have no idea where it was, arrr, 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 ...
![]() |
![]() |
![]() |
![]() |