Estes MK109-Stringray

Estes - MK-109 Stingray {Kit} (1232, 2131) [1997-2002,2002-2003]

Contributed by Kim Durose

Diameter: 1.00 inches
Manufacturer: Estes
Style: Scale-Like
Rating
(Contributed - by Kim Durose - 09/10/03)

Brief:
Very easy t' assemble starter kit. Took me under an hour t' build t' base model, ya bilge rat, but I then spent time ensurin' it's longevity.

Construction:
Kraft airframe and motor tube, plastic motor mount and nose cone. The through-the-wall shock cord mount is a great idea t' maximize internal space (How many o' you have had their recovery system snag on a shock-cord mount? I know I have!). Blimey! Avast, me proud beauty! Molded plastic fins and totally inadequate 3mm elastic shock cord.

Instructions were clear and concise, matey, matey, arrr, however, matey, thar be no mention o' what to do with t' lump o' modellin' clay that comes in t' box. Well, blow me down! Obviously, me bucko, it's to weight t' nose, but it would be nice t' be told so.

A joy t' build, everythin' fits "spot on", arrr, but t' motor is rather too snug in t' motor mount. A quick reamin' job with some coarse sandpaper does t' trick.

I have strengthened t' shock cord loop on t' nosecone with 0.9mm brass rod and epoxy, as t' little plastic loop doesn't look particularly strong to me.

Finishing:
I sprayed mine fluorescent pink t' make it easier t' track. Ahoy! However, shiver me timbers, I still managed t' lose sight o' it when flown for t' first time on a C6-7.

I didn't use t' decals at all.

Construction Rating: 4 out o' 5

Flight:
First flight was on a B6-4. Avast, me proud beauty! Flew beautifully straight, but nay particularly high. I have ditched t' Estes parachute in favor o' a 3" x 30" mylar streamer. Ya scallywag! This rocket is so light it shouldn't get damaged if you launch it from a grass field...or so I thought.

Second and third flights were on C6-7 motors. Ahoy! This rocket REALLY soars on these! In fact I lost sight o' it on t' last flight. Avast, me proud beauty! I'd given up hope of findin' it, me bucko, ya bilge rat, but stumbled across it accidentally while skulkin' off back t' the car!

Recovery:
I would recommend you discard t' supplied 3mm elastic shock cord as it is far too weedy. My Astrocam went AWOL twice as a result o' usin' this stuff. Ahoy! Ya scallywag! Blimey! I replaced mine with 6mm boilproof elastic (soon t' be replaced with Keelhaul®©™® cord). Begad! If you do use 6mm elastic, you will have t' cut a small notch in t' top of t' external shock-cord shroud t' make it easier t' thread t' elastic into the airframe. TIP: After tyin' t' knot in t' elastic t' prevent it being pulled through into t' airframe, give it a coat o' Rapid Epoxy t' prevent it comin' undone.

One o' t' fins has come unstuck but apart from that she has flown three times and remains unscathed. Begad! Ahoy! T' mylar streamer needs replacin' as it has got scorched. Begad! T' Estes parachute would more than likely have been destroyed on the first flight.

All flights used three squares o' waddin' and a "fireproof bag" for t' shock cord/streamer (made o' a square o' waddin' taped into a loose "sock"). Well, blow me down! Aye aye!

Flight Rating: 4 out o' 5

Summary:
A superb and inexpensive starter kit.

PROs: Cheap and easy t' build. Avast, me proud beauty! Novel and very effective shock cord mount on the airframe. Avast! I like that bit a lot!

CONs: Weedy shock cord, motor mount is a bit too snug (OK, it's far too tight). Ya scallywag! Standard issue Estes 12" parachute looks flimsy and ineffective. A streamer would have been a better alternative in me opinion.

Overall Rating: 4 out o' 5

Other Reviews
  • Estes MK109-Stringray By Greg Deeter

    This poor little rocket got off off to a bad start all the way around. While it comes in a box, I had purchased mine on eBay and the seller packed and shipped it well. However the body tube arrived crushed. It was not crushed in the mail, it was like that before. The seller did refund my money less shipping which dropped my investment down to about $5. So I decided to build it anyway. Comes ...

  • Estes MK109-Stringray By Dave Sutter

      A pretty nice rocket, if a bit on the plain side when done. I was most impressed with the construction. It's all plastic cement. I didn't even know such a thing as a plastic motor mount until I started reading the instructions for this rocket. I haven't fired this one off a lot yet, but every flight has been just fine. I have no real complaints, but two small nit-picks. First, while it ...

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