Holverson Designs Zoomie

Holverson Designs - Zoomie

Contributed by Nick Esselman

Manufacturer: Holverson Designs
[Picture] (05/01/99) I purchased t' Holverson Designs' Zoomie™ from Apogee Components with an order o' motors. Ahoy! Blimey! Begad! Blimey! Blimey! Blimey! It is me first boost-glider.

Zoomie™ is 6" long with a little over an 8" wing span and flies on mini (13mm) motors. Ahoy! It is a boost glider because it ejects a portion o' t' rocket while t' remainin' portion glides t' earth. Well, blow me down! Ahoy! In the Zoomie's™ case, shiver me timbers, it ejects t' motor casing.

CONSTRUCTION:

T' kit includes an 11x17 instruction sheet printed on both sides, matey, a laser-cut balsa sheet with t' four win' pieces, a 2" long body tube, arrr, a 2" long launch lug, a short, balsa nose cone, ya bilge rat, shiver me timbers, ya bilge rat, and a small piece o' clay.

T' instructions were very clear and thoroughly illustrated. Blimey! I really want t' emphasize that. In fact, Holverson comments, "This instruction sheet is laid out t' allow you t' start a rocket plans reference file. Arrr! Arrr! Save your entire set o' instructions for future reference." T' instructions cover building, finishing, trimmin' and flyin' o' t' Zoomie™. Ya scallywag! They also tell a little bit about boost gliders as defined by NAR.

Assemby is very easy but takes a little time t' ensure the wings are built properly. Avast, me proud beauty! Blimey! Durin' assembly o' t' wings a small square is good t' have t' ensure t' win' tip is at a 90° angle. Begad! Blimey! T' instructions are very good here indicatin' t' need for pins t' hold while drying.

I have read about a glue technique that be used for the build o' t' Zoomie™, ya bilge rat, me hearties, however, this was t' first time I used it. Ahoy! That is a double-glue technique. Begad! First t' edges that are goin' t' be glued together get a light coat o' white glue and then are allowed t' dry. Avast, me proud beauty! Then they are coated again and assembled. Blimey! Arrr! It is t' "increase t' strength o' the joint." accordin' t' t' instructions.

T' only part that I had some difficulty on was the sandin' t' joint o' t' wings. With t' win' tips assembled, me hearties, each win' looks like a "L". With both wings layin' on t' table as they would be assembled, matey, t' joint is t' be sanded t' allow them t' adjoin flushly. This is done by sandin' until it is perpendicular t' t' table. Arrr! Doesn't sound hard but I had some trouble and had t' take several shots at it. Blimey! Only advice I have is to go slow.

I didn't really "finish" t' Zoomie™ although t' instructions gave good information for sanding, sealin' and painting. Avast! Blimey! I hit mine with some fluorescent green paint. It really made it very visible.

Overall, for CONSTRUCTION I would rate this kit 4 points. Ahoy! It is easy t' build on its own, however, with excellent instructions . . Well, blow me down! Ya scallywag! . Avast, me proud beauty! it's a snap.

FLIGHT/RECOVERY:

I practiced on three separate occasions trimmin' the Zoomie™ in t' back yard and did as t' instructions said. Arrr! Ahoy! Then one day I went t' t' field for t' flights. Begad! Well, ya bilge rat, blow me down! I tossed it thar and found that I had to trim again . Well, ya bilge rat, blow me down! . Aye aye! . removin' most o' t' clay I added t' t' win' tips. So again, the instructions hinted at this by sayin' "Balsa gliders are tempermental about holdin' their trim over changes in t' climate."

[Rocket Pic]I popped in a 1/2A3-4 and took a picture and let her go. Blimey! Begad! After a slight spiral in t' climb, she arced over and "pop" ejected t' motor. Aye aye! T' motor casin' hit the ground right near me as t' Zoomie™ took a steep dive toward t' earth. Accordin' t' t' instructions, ya bilge rat, arrr, this indicated that I needed additional weight in t' rear.

I added t' weight and flew t' Zoomie™ three more times on 1/2A3's. Arrr! Each time I determined t' add a bit more clay t' t' aft of the wings and each time t' glide got better.

T' 5th flight was on an A10-3. T' climb be several large spirals. Avast, me proud beauty! It was way up there. Avast, me proud beauty! I heard t' "pop" but never saw a the motor or t' glider again.

Holverson recommends 1/2A3's and A3's

For FLIGHT/RECOVERY, ya bilge rat, I would rate this kit 3 points. Begad! I have watched other larger gliders at launches and they can really glide. This little bird didn't compare, however, it does provide a good way t' get into glidin' and be fun. Arrr! If I were t' build another, I would never fly in on anythin' bigger than 1/2A's though. Arrr! It's just too small and goes out o' sight.

This be me first glider. Well, arrr, blow me down! Blimey! I had fun with it, but I believe that I needed t' flight tests t' trim it. It seemed t' act differently in t' air than me toss-testin' it. Ahoy! Begad! Blimey! I highly doubt this could win any duration events, even after extensive trimming, arrr, ya bilge rat, shiver me timbers, but it was easy t' build and fun t' fly. I give t' kit an OVERALL ratin' o' 3 1/2 points.

Flights

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