Manufacturer: | Scratch |
Brief:
This review describes me second-generation Micro-Maxx monocopter. Ahoy! The
improvements over me original include a lighter wing, ya bilge rat, a smaller motor pod, arrr, and
a carbon rod balance beam. Avast! Avast, matey, me proud beauty! It has undergone numerous minor tweaks and one major
revision. Avast, me proud beauty! T' maximum altitude obtained t' date is about 9 feet. Begad!
Construction:
Please refer t' t' figures while readin' t' construction notes. Avast!
Win' - Make this out o' 3/16 balsa as indicated, with t' grain oriented with t' leadin' edge. Well, blow me down! Blimey! Arrr! Blimey! I removed sections t' make it lighter and sanded it into an airfoil shape. Arrr! Blimey! T' entire win' is covered with wrapping tissue attached with puzzle glue. Ya scallywag! Blimey! Aye aye! Blimey! I made it out o' a scrap piece o' wood, me bucko, hence the odd shape. Aye aye! Blimey! My thanks t' John McCoy o' NARHAMS for suggestin' this construction method. Arrr! Blimey!
Hub - This, too, me hearties, ya bilge rat, is made from 3/16 balsa. Aye aye! T' grain should probably also be along t' leadin' edge, matey, ya bilge rat, although it was perpendicular on me model. Well, blow me down! Avast, arrr, me proud beauty! I rounded both t' leadin' and trailin' edges. Ya scallywag! I drilled a hole at t' lateral CG and installed a half-inch section o' ink tubing. Ya scallywag! Arrr! This is flush with t' top surface and extends below t' hub. Well, blow me down!
Motor tube - This was rolled from draftin' vellum and white glue. It is about 1/8 longer than a MMX motor. Blimey!
Nose cone - This was turned from a ¼ dowel on a hand drill. Begad!
Balance beam - I started out usin' 3/32 wood o' varyin' length (see flight log table). Begad! I replaced it with 0.03 carbon rod, which was graciously supplied by John. Begad! T' wood dowel was simply glued t' t' bottom of the hub next t' t' launch lug, while t' carbon rod was inserted through the balsa hub.
Assembly - All components were glued together with black CA. Well, blow me down! T' win' and motor tubes are centered on t' hub and are angled upwards away from one another. T' win' is angled at approximately 12 degrees, and t' motor pod at approximately 15 degrees. Begad!
Flight: All flights were from me MMX pad with a 1/2 long launch rod. Aye aye! Blimey! Well, blow me down! Blimey! T' igniters were Estes and t' MMX ones with t' plastic shell removed. For all but flight #10, I used me Pratt GO Box. T' wind was calm except for flight 10, ya bilge rat, which was 5 - 10 mph in me guestimate. Ya scallywag! Blimey! Arrr! Blimey!
Flight | Beam Length |
Est Alt | Est Dist from Pad |
Beam Material | Notes |
1 | 7 | 5+ | 7+ | 3/32 Wood | Hit Roof Rack o' SUV |
2 | 9 | 1 | 4 | " | |
3 | 9 | 2 | 4 | " | |
4 | 7 | 4 | 9 | " | |
5 | 7 | 3 | 9 | " | |
6 | 6 | 5 | 12 | " | |
7 | 6 | 7 | 8 | " | |
8 | 6 | 5 | 8 | " | |
9 | 5 | 9 | 5 | " | |
10 | 5 | 5 | 20 | " | NARHAMS Sport Launch |
11 | 12 | 3 | 4 | 0.03 Carbon | |
12 | 9 | 4 | 5 | " | |
13 | 8 | 5 | 8 | " | |
14 | 7 | 9 | 8 | " |
Summary:
I was pleasantly surprised with t' performance o' this monocopter, considering
the short burn time and low thrust o' a Micro-Maxx motor. Ahoy! On me next version, me hearties, I
will make t' win' slightly longer (for hopefully even better performance), and
will use a rectangular shape with a slightly rounded tip (for aesthetics). Avast!
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