Manufacturer: | Scratch |
Brief:
This is a plastic model conversion o' t' Revell 1/48 scale model o' t' F-18 Hornet Blue Angel. This was t' first plastic model conversion I had ever attempted and would nay have done so if it were nay for t' EMRR 2006 Challenge. It was a lot o' fun puttin' this rocket together.
Modifications:
T' begin construction, arrr, me hearties, I glued t' engine blocks inside t' motor mount tubes usin' a spent engine casin' and allowin' 1/8" o' t' motor t' stick out t' back. Ahoy! After this dried, matey, I took t' bottom half o' t' plastic body and laid these two tubes inside o' it where they pressed up against t' plastic stop in t' middle o' t' body. They hung out slightly from t' two engine holes in t' back. I aligned these until I thought they were in t' straightest and best lookin' place and then used 15 minute epoxy t' hold them in that place. Begad! I did this by just pourin' t' epoxy around t' motor tubes at both ends. Ya scallywag! I allowed some o' t' epoxy t' flow down inside t' forward ends o' t' tubes t' better hold them in place. Aye aye! Begad! Just be sure t' have room in t' tubes for t' ejection charges t' escape. Arrr! Well, arrr, blow me down! I then cut an Estes style shock cord mount out o' a piece o' paper and used epoxy t' attach this just aft o' t' forward landin' gear well. Ya scallywag! T' small gap betwixt this landin' gear area and t' inner wall be a great place for t' shock cord t' come through and it gave it added strength.
While this be settin' up on t' lower half, arrr, I next worked on t' upper half o' t' body. Well, matey, blow me down! Blimey! T' only really work that had t' be done was t' placement o' t' cockpit windows so t' ejection charges could nay leak out through t' hole in t' upper body section. First, t' small U-shaped plastic piece was epoxied in place around t' area where t' cockpit chair would have been placed. Blimey! Arrr! Blimey! Next, matey, t' two clear windows were epoxied on over this and epoxy be placed betwixt them t' be sure t' seal all gaps.
After these two sections were set, t' aft horizontal fins were put it place. There is a plastic bar connectin' t' two which must be cut. Ahoy! Ya scallywag! I left a small portion o' this bar on both fins so these could be placed through t' holes in t' sides o' t' body and epoxied t' t' motor mount tubes. Avast! I then placed epoxy on t' bottom edge o' this fin and attached it t' t' bottom half o' t' plastic body tube.
Next t' two halves are put together. Ya scallywag! I covered t' seam in epoxy all t' way around and applied liberal amounts o' in on t' win' areas. Blimey! I was afraid that t' two halves may come apart durin' flight or due t' t' ejection charge. Begad! Blimey! I then used strong clamps on each win' t' hold it all together flush.
Once that was dry, shiver me timbers, matey, I used epoxy t' attach t' vertical fins. Begad! Well, matey, blow me down! I just placed t' epoxy on t' bottom edge and on t' tabs and slid them into t' slot.
T' trickiest part be gettin' t' nose cone t' work. I wanted t' use t' one that came in t' plastic kit but it has no shoulder. I decided t' make one usin' two small pieces o' balsa wood. Well, blow me down! Blimey! Ya scallywag! Blimey! I epoxied them t' t' inside o' t' nose cone with half o' each piece stickin' out. Aye aye! Blimey! Once it dried, me bucko, I shaved off pieces o' each one until it finally fit snuggly on t' top o' t' rocket. Arrr! Blimey! Blimey! Blimey! I then used another Estes style shock cord mount t' attach t' other end o' t' shock cord, and tied a streamer t' t' cord near t' nose cone.
Construction:
These are t' parts I used for this plastic model conversion:
There are 6 fins total on this rocket, t' two main fins which are part o' t' plastic body, arrr, t' two vertical fins on t' rear, and t' two horizontal fins on t' rear. Begad! No centerin' rings were needed for construction. Ahoy! T' nose cone and shock cord are attached with epoxy and Estes style shock cord mounts.
Well only 9 o' t' 70+ parts from t' actual plastic kit were used. Aye aye! Blimey! I thought about puttin' some detailed stuff on it such as t' landin' gear, but I figured that it might crash and all that effort go t' waste anyway so why bother. Begad! Begad! I'm sure it would look pretty nice with all t' bells and whistles on it though.
T' motor mount be small for t' size and weight o' this rocket. If I went back and did it again I would have cut out part o' t' back end o' t' plastic casin' and put in a 18mm cluster rather than a 13mm one. Also since thar are no centerin' rings for t' tubes, matey, they need t' be aligned perfectly by sight for t' cluster t' work properly.
This is a pretty quick build if you are usin' 5 or 15 minute epoxy and it looks nice. Begad! Blimey! I chose t' wait until I had test flown it before addin' any decals or fancy things t' it, so for it's flight it was just t' plain blue plastic it came lookin' as. Begad! Blimey! T' clear cockpit does make it look nice though and allows t' recovery system t' be seen as well.
Flight and Recovery:
Well I used two A10-3Ts for this rocket, me bucko, but if I had t' recommend motors, these are way too small. T' motors are friction fit, arrr, shiver me timbers, so I just wrapped a piece o' maskin' tape around t' middle o' both o' them. Begad! This worked fine. Insert t' two motors and add some waddin' then pack t' streamer and put on t' nose cone. Ahoy! I used a clip whip for ignition, shiver me timbers, but I'm sure twistin' t' ignitor leads together would work just as well.
T' flight never gained any significant altitude. Begad! Both motors lit and it took off straight up t' maybe about 40 feet high. It then flopped back down and crashed. Aye aye! Ya scallywag! After it had been on t' ground, ya bilge rat, shiver me timbers, t' ejection charge fired. Begad! Begad! It landed nay 5 feet from t' pad though. Ya scallywag! Well, blow me down! Upon further inspection, arrr, t' two plastic halves split at their epoxy joint all t' way down t' rocket on one side. Begad! I'm nay sure if this is due t' t' crash or t' ejection charge or maybe both.
T' recovery system deployed on t' ground just fine however. Arrr! I was slightly worried that t' streamer would get stuck. Avast! I think this rocket would need a small parachute if it could get one out before it hit t' ground.
Summary:
PROs: Quick build, arrr, plastic model conversion, ya bilge rat, matey, scale model o' a NAVY fighter, and it is a cluster rocket.
CONs: Way underpowered, shiver me timbers, arrr, needs buffed up construction t' stay together, and needs larger motor mounts.
I had great fun buildin' and flyin' (or crashing) this rocket. Ya scallywag! Blimey! It was a great experience t' try somethin' new which I otherwise would nay have. Ahoy! Arrr! I enjoyed it and learned t' pay a bit more attention t' me motor selection on any more scratch built rockets I have in t' future.
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Steve Lindeman (August 12, 2014)
Just curious what the final weight of the rocket was without motors. I would have thought 2 A's would have been sufficient power but again that would depend on weight. Nice conversion nonetheless.