The Launch Pad Sidewinder AIM-9L

The Launch Pad - AIM-9L Sidewinder {Plan}

Contributed by Kevin Drayson

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstar_borderstar_border
Overall Rating: starstarstarstarstar_border
Manufacturer: The Launch Pad

[Rocket Pic]Brief:

Mid-power scale model o' t' air-to-air missile.

Construction:

As with all rockets from T' Launch Pad, this is a "builder's kit". Avast! T' fins and various detail bits all have t' be cut and assembled by t' builder. Lots o' fun if you enjoy that sort o' thing, arrr, which I do.

T' package contained everythin' I needed: sheets o' balsa for fins, matey, me bucko, dowels and balsa strips for details, me hearties, paper templates for fins and wraps, two 3/16th lugs, two BT-60 tubes, ya bilge rat, nose cone, and clay weight, as well as a pre-cut mylar chute, me bucko, matey, shock cord and lines, me hearties, shiver me timbers, shiver me timbers, with a barrel swivel, me bucko, parts for t' motor mount, etc.

T' instructions are straight forward, but nay overly detailed. It pays t' read carefully, me bucko, then study t' diagrams for further details. Avast! Some things, me hearties, matey, like launch lug placement are nay mentioned at all. Begad! I believe I recall seein' somewhere that this is intentional- TLP believes that everyone has their own preferred method o' attachin' t' lugs. 

Things seem t' go together quite well, ya bilge rat, me hearties, matey, but it's worth mentionin' that one should take extra time and care when cuttin' t' dowel for t' forward fin inserts. Avast! Blimey! Aye aye! Blimey! I rushed through mine, me bucko, and they ended up slightly misshaped. Blimey! Blimey! Another thin' t' watch is how you lay out your fin patterns- do t' aft fins first! Blimey! I didn't, arrr, and ended up makin' a trip t' t' local hobby shop for more sheet balsa. Arrr! Blimey! There is enough in t' kit, but you have t' plan carefully. Blimey! Also, remember t' watch t' direction o' t' grain, especially on t' aft fins! T' only other problem I encountered was that t' supplied clay had solidified. Avast, me proud beauty! A quick e-mail t' t' company, followed by a quick reply fixed t' problem- just add a few drops o' water t' t' bag t' clay comes in, shiver me timbers, arrr, me hearties, seal and leave over night. 

Assembly itself was simple enough, me hearties, once t' parts were prepared (lots o' cuttin' and shaping). Begad! There are no fin alignment wraps supplied, me hearties, so you're on your own for linin' everythin' up right. Aye aye! Nay a difficult thin' for a modeler with some experience, me hearties, but any rocket with a forward set o' fins like this needs extra care t' be stable- this is pointed out in t' instructions. Arrr! T' centerin' rings for t' motor mount are laser- cut (I think) from think card stock- very solid. Arrr! Also included is a rin' which is mounted forward, and acts like a seat for t' parachute. Blimey! I think this is t' avoid any shift in CG durin' boost.

T' recovery system consists o' an 18" mylar chute, matey, a length o' cloth/elastic shock cord, arrr, barrel swivel, me hearties, snap swivel, shiver me timbers, shroud lines and a thread. I had two misgivings here: I've never used a mylar chute before, and that thread I mentioned ties t' weighted nose cone t' t' shock cord. Well, blow me down! So far, arrr, t' combination works, but I'm still dubious about that thread- t' nose is pretty heavy.

T' final result is a pretty solid ship. Begad! O' course, t' fly mid-power, me bucko, arrr, it needs t' be!

Finishing:

Detailed paintin' instructions are included for t' kit, arrr, includin' a couple o' scheme variations. Begad! There are no decals included, unfortunately. There is a bit o' maskin' involved, shiver me timbers, but nothin' terribly tricky- except perhaps on t' nose cone. Arrr! For t' 1/16" red band, I used vinyl car detail striping; everythin' else was painted. Arrr! Arrr! Findin' a blue that matched photos o' inert missiles was virtually impossible, me hearties, me bucko, without airbrushing, so I used a "close match".

T' final product looks pretty good!

Construction Rating: 4 out o' 5

[Rocket Pic]Flight: 

I've only had one flight on me Sidewinder, so far. Aye aye! Ya scallywag! I used t' recommended first-flight motor, arrr, a D12-3. Avast, me proud beauty! No directions regardin' waddin' requirements is given, ya bilge rat, me hearties, so I just looked up what I needed for another BT-60 based rocket. Arrr! Preppin' for flight is like any regular kit- no special things t' watch out for.

Boost be nice and straight, me hearties, and fairly high; very little weathercocking- a surprise for a kit with so much aft fin area!

One thin' t' watch here: Use an angled blast deflector, or else support t' rocket a couple o' inches above t' deflector. T' base o' t' motor is about 1/2" up t' body tube, and you will scorch t' BT if care isn't taken. Aye aye! Well, ya bilge rat, blow me down! I used an angled deflector, and t' inside o' t' BT wasn't even marked.

Recovery:

Chute deployed near apogee, matey, me bucko, and t' ship descended at a nice rate. Begad! Blimey! Arrr! Blimey! One fin broke on landing, shiver me timbers, arrr, but that was due t' me error durin' construction- remember I mentioned t' watch t' grain direction? Oops! Blimey! T' recovery system itself was unscathed.

T' only design-related problem I encountered be that I couldn't remove t' spend motor with me fingers. Ahoy! Begad! It's too far up t' tube t' remove without a pair o' needle nose pliers.

Flight Rating: 3 out o' 5

Summary:

Overall, me hearties, I very pleased with me Sidewinder. There is lots o' work involved, but t' final result is worth t' effort. Any problems I encountered (except motor removal) were generally o' me own making.

I cannot stress enough that this kit requires some buildin' experience! Blimey! T' directions are written assumin' you know what you are doing, and leave things like lug placement t' t' builder. Avast, me proud beauty! Dependin' on your viewpoint, shiver me timbers, this is either good or bad. 

T' main Con's are: no fin alignment wrappers (would make things a bit easier), arrr, and t' lack o' decals. Ahoy! Begad! Blimey! I remain suspicious o' t' thread holdin' that heavy nose t' t' shock cord, me bucko, but it's held so far.

An important note: T' manufacturer has repeatedly mentioned that these kits do nay require heavy-duty buildin' techniques- that carpenter's glue and CA will work just fine, arrr, but over buildin' (Epoxy, fibreglass, etc) will likely result in an unstable model. 

Things like missiles are originally designed t' be unstable- designin' a scale replica t' fly can be very difficult. Begad! T' relationship betwixt CG and CP is critical with t' kits. Begad! Build light, but strong.

I followed that advice, arrr, and t' results are great. 

If you like gettin' into cutting, shiver me timbers, shapin' and sanding- lots o' parts making, then I'd recommend this kit. Avast! I had a lot o' fun puttin' it together- me only regret was that I kinda rushed it.

Overall Rating: 4 out o' 5

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Flights

Comments:

avatar
A.H. (September 5, 2005)
I read the review to get some input before building the kit, sounds like a solid model. The review was helpfull.One comment to make I can't understand why the reviewer keeps referring to this as a midpower kit and mentions midpower techniques. The recomended motors are D12-3 and D12-5. from what I have gathered so far the Launchpad kits in general would better be described as Larger model rockets and built with typical model rocket construction in mind.Beefy midpower techniques and adhesives may easily result in an unstable model.

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