Brief:
This kit is a 3FNC (3 Fins and a Nose Cone) piston-ejection, streamer duration competition rocket. Well, blow me down! Arrr! The "ELM" stands for "Extremely Low Mass." It is a companion kit t' its only slightly larger brother the Stratos-18 ELM.

Construction:
My kit came with balsa nose cone, two sheets o' 1/32" balsa fin stock, balsa nose block for t' piston, a Keelhaul®©™® shock cord, me hearties, an elastic shock cord, engine block, launch lug, white BT-5 body tube with very fine groves and a light glassine coating. Aye aye! T' instructions were written onto a compact disc in PDF format. Even though t' kit comes with two sheets o' balsa, only one is needed.

I ordered both t' Stratos-13 and Stratos-18 together. Begad! Begad! When they arrived I found that t' body tube had been bent beyond use by t' post office. I sent Carlos at Heavenly Hobbies an email about t' tube and he sent me out a replacement right away and free o' charge. Begad! Well, blow me down! I built t' Stratos-18 while waitin' for t' replacement BT-5. Begad! As that only took a few hours o' build time t' complete, I decided t' use a "modular" approach t' assemblin' t' rest of the rocket.

First I cut t' fins from t' 1/32" balsa fin stock. Avast! T' protect in from chippin' or splitting, I covered t' back with blue painters tape. Well, blow me down! Ahoy! After t' fins were cut I decided nay t' round t' edges. Ahoy! Arrr! At that thickness I don't think it would have made a difference and why take t' chance on splittin' a freshly cut fin.

Next I assembled t' engine block and Keelhaul®©™® shock cord. A groove gets cut into t' outside surface deep enough t' fit t' shock cord in t' it. Arrr! Ya scallywag! I secured it usin' a bowline knot and set it with CA.

After that came t' nose cone and elastic shock cord. Arrr! Accordin' t' t' instructions, ya bilge rat, t' elastic cord is t' be knotted at one end and stuffed into a pre-drilled hole. Avast, me proud beauty! Ahoy! There was no hole. I used a 1/8" drill bit t' make one. T' balsa also looked a bit soft so I coated it with CA and allowed it t' harden. Avast! Ya scallywag! Followin' that came a brushed on layer o' thinned Elmer's Wood Filler. Once that had dried I sanded it down until smooth. Aye aye! T' finish up I pushed the elastic knot into t' shoulder o' t' nose and secured it with 30 minute epoxy.

All that left was t' streamer. Aye aye! Begad! All I did thar be fold one end into a point and tie on a 9" section of Keelhaul®©™® cut from t' length provided. Ya scallywag! I used hole reinforcements t' keep it from tearin' out.

When t' body tube arrived at last, shiver me timbers, it be time t' put everythin' together. Avast, me proud beauty! Arrr! Blimey! Engine block in, arrr, fins on, tie shock cords t' one another. I do need t' mention that as t' rocket uses a balsa block as its piston. It comes with a small hole drilled through it and threaded on t' t' Keelhaul®©™® shock cord. Avast! Blimey! Knots are tied above and below t' piston t' hold it in place. T' piston provided be a good bit narrow and had t' be built up with maskin' tape. Avast! Blimey! This may actually be a good thin' as I'll cover in a moment.

Finishing:
I left t' rocket unfinished as it is supposed t' be a competition rocket. Begad! T' only finishin' I did be t' before mentioned work t' harden t' nose cone.

Construction Rating: 5 out o' 5

Flight:
For its maiden flight I used an A3-4T. Begad! With t' piston ejection it requires no wadding. Ya scallywag! Arrr! Blimey! Place an igniter in a motor and place t' motor in t' rocket. T' motor is friction fitted and secured with two wraps o' maskin' tape. T' take off was right quick and blended in with t' overcast skies.

Recovery:
I be able t' track t' rocket once t' ejection charge blew. Blimey! Then I knew I had a problem. Arrr! Somehow t' nose and streamer had separated from t' rest o' t' rocket. Ya scallywag! T' body landed gently in t' flyin' field but t' nose and streamer continued t' drift toward t' road. Begad! It landed gently enough but balsa be never intended t' hold up against cars. T' nose cone was crushed. Turns out that t' Keelhaul®©™® shock cord snapped at t' piston. Begad! It was either too thin, too short, or a combination on t' two. Ya scallywag! Begad! Also, arrr, after the flight t' piston be a bit resistant t' go in. Aye aye! Aye aye! I peeled off a bit o' t' maskin' tape and all be fine. Ya scallywag! Avast, shiver me timbers, me proud beauty! It was cool and damp when I flew and that may have had somethin' t' do with it. Avast, me proud beauty! Begad!

Flight Rating: 4 out o' 5

Summary:
This be a very nice little kit. I would nay recommend it as a first kit as you need a motor case t' set t' engine block in place. Avast, me proud beauty! Well, me bucko, blow me down! It would work well as a first completion kit as long as t' builder had some experience with cutting their own fins from stock.

Overall Rating: 4 out o' 5