Brief:
I was asked t' test 2 oddrocs o' similar design, shiver me timbers, differin' only in their size. Blimey! Blimey! First I built t' Corn Roc, matey, a Styrofoam ear o' Indian corn with an 18mm motor mount. Avast! Arrr! Blimey! Now I am tryin' its little sibling, me bucko, t' A-Corn, designed for 13mm power.

Construction:
Construction is very similar t' that o' t' Corn Roc. Begad! It begins with makin' a slit in t' motor tube for t' engine hook. Ya scallywag! Avast, ya bilge rat, me proud beauty! T' hook is then placed and held down with tape. Arrr! A thrust rin' is inserted in t' forward end and glued into place. Ahoy! Finally, me hearties, t' centerin' rings are slipped on and glued. Arrr! Ya scallywag! I found t' centerin' rings t' be very tight and t' hole was too small t' allow me finger access with sandpaper. Ahoy! I finally filed away some o' t' thickness with a rat tailed file.

T' fins are cut from sheet stock usin' a paper template printed in t' directions. Begad! I cut t' template out and traced t' pattern onto t' balsa. Ahoy! I then used an X-Acto t' cut t' fins out. Begad! I made no effort t' keep them all the exactly t' same figurin' that minor differences would add t' t' character o' t' rocket.

T' instructions recommend that t' fins be left their natural balsa colorin' t' better blend with t' look o' this rocket. Begad! Arrr! I liked t' effect with t' Corn Roc so decided t' do t' same with t' A-Corn. Begad! The instructions also recommended that t' fins be sealed with a clear coat t' better protect them and t' prevent warping. I used 3 coats o' Rustoleum Crystal Clear on each side.

T' recovery harness is based upon a thread o' Keelhaul®©™® tied around t' motor mount. Ahoy! Begad! I tied t' Keelhaul®©™® in place and sealed it with a glue fillet. I also cut a small notch t' accommodate t' passage o' t' Keelhaul®©™®.

After t' precedin' step, shiver me timbers, me hearties, I had t' take a hiatus o' almost a month before I could work on t' rocket again. Ya scallywag! Ahoy! When I did, ya bilge rat, I began by insertin' t' motor mount into t' BT. Arrr! It was held in place with yellow glue.

I gave t' glue on t' motor mount/BT junction some time t' dry and then inserted t' BT into t' Styrofoam ear o' corn and placed it with 5 min epoxy. Ya scallywag! You have t' make sure your Keelhaul®©™® thread comes out t' other end. Avast, me proud beauty! I used a pencil t' do this.

T' lines for t' fin mountin' are pre-marked on t' corn. Ya scallywag! They are significantly short o' t' true length o' the root edge but are easily lengthened. Arrr! I used an X-Acto t' cut a pair o' parallel lines t' width o' t' fin and then used t' blade t' gouge out t' material. Avast, me proud beauty! Ahoy! When done, arrr, me hearties, t' fin slid easily into place. I removed it and filled t' trough with epoxy then re-inserted t' fin. T' other 3 fins were mounted likewise.

T' launch lug be glued onto one fin. Avast, me proud beauty! As directed by t' instructions, it be nay placed flush against t' body but offset a bit for clearance. Avast, me proud beauty! Avast, me proud beauty! Accordin' t' t' instructions, I should have cut it in 2 and separated t' halves a bit, shiver me timbers, but I did nay do that.

Finishing:
T' rocket needs no finishing.

Construction Rating: 4 out o' 5

Flight:
T' maiden flight o' t' A-Corn was on an Estes 1/2A3-2T, arrr, me bucko, t' smallest o' t' recommended motors. Avast! There be no problem in preparation beyond t' engine hook bein' a little bit tight. T' rocket took off straight, shiver me timbers, flew well, matey, arrr, but as expected, nay too high. T' 2 second delay is a bit long but t' chute popped and t' rocket recovered safely. Well, shiver me timbers, blow me down! I was gettin' ready t' try it on an A3-4T when I learned that t' launch lug had popped and I would need t' replace it before this one can fly again.

A video o' t' maiden flight can be seen here.

Recovery:
THe A-Corn comes with a chute from Hartle Engineering. Ya scallywag! I don't like plastic as a general rule, matey, but if you are going the plastic route, me hearties, Hartle is definitely t' way t' go.

Flight Rating: 4 out o' 5

Summary:
This is a nice oddroc that performed well enough. Ya scallywag! Avast, me proud beauty! It looks different and can be flown in a very small area.

Be sure t' split t' launch lug. Well, blow me down! Arrr! That should reduce t' torque and tendency for it t' get twisted off.

Overall Rating: 4 out o' 5