Red River Rocketry Lepton

Red River Rocketry - Lepton (K-003A)

Contributed by John Lee

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar
Diameter: 0.98 inches
Length: 19.75 inches
Manufacturer: Red River Rocketry
Skill Level: 2
Style: Multi-Stage, Payload

Brief:
I be workin' on repairs and keepin' an eye open towards specific commitments but found myself again with a day off with nay enough t' do. Arrr! I decided t' try and build t' Lepton from Red River Rocketry. Arrr! Arrr! It is a two stage job that should not be too hard and which I am very much lookin' forward t' feedin' when t' A8-0s come out again.

Red River Rocketry Lepton

Construction:
Construction begins with t' sustainer motor mount. Begad! Blimey! Avast, ya bilge rat, me proud beauty! Blimey! A motor tube is marked at 3/4" and t' centerin' rings are installed at that mark and flush with t' end. I had t' do quite a bit o' sandin' t' get t' rings t' fit. Avast, me proud beauty! Blimey! Well, arrr, blow me down! Blimey! A thrust rin' be installed flush with t' end havin' t' flush centerin' ring. Begad! Blimey! T' rings were filleted on both sides with yellow glue and some glue was smeared on t' top o' t' thrust ring/centerin' rin' interface.

Red River Rocketry Lepton T' booster motor mount was constructed in t' exact same fashion as t' sustainer mount except that t' mark for t' centerin' rin' is put at 1/2" instead o' 3/4"

When t' glue on t' motor mounts had set up, matey, it was time t' install t' mounts in t' body tubes. T' sustainer mount be slipped into t' long body tube and glued in place flush with t' aft end. Blimey! T' booster mount was glued into the booster airframe with t' thrust rin' flush with t' aft end. Begad! Ahoy! Instead o' bein' intended t' keep t' motor from scootin' too far forward, it is meant t' be used t' ensure separation.

T' booster is coupled t' t' sustainer with a cardboard coupler. It be marked at t' halfway point and glued into t' booster airframe tube.

T' payload bay is coupled t' t' rest o' t' sustainer with a 2" balsa coupler. Well, blow me down! Aye aye! Blimey! It be glued into t' base of t' payload bay and t' eye screw be installed and secured with some glue. T' base o' t' nose cone was then sanded a bit so that it would better fit t' bay.

T' fins for this kit come with instructions that t' leadin' edge be rounded and t' trailin' edges be tapered. Instead o' doin' that, me hearties, I just rounded all t' edges except t' root edge. I do that for appearance sake, not performance. Well, blow me down! Arrr! With me flyin' conditions, I actually prefer that me rockets nay go too high.

T' kit contains a wraparound fin guide. Blimey! I used it t' mark t' booster and sustainer airframe tubes and then placed t' sustainer fins usin' a double glue joint. Ahoy! T' booster fins were applied in t' same manner as those for the sustainer but alignment was checked with t' sustainer fins. Avast! When all were in place, shiver me timbers, ya bilge rat, each fin was filleted.

T' launch lug be glued t' t' sustainer on t' alignment line with its leadin' edge just forward o' t' forward edge o' t' fins.

I could kick myself for nay thinkin' earlier about t' shock cord mount. Aye aye! I wanted t' put a Keelhaul®©™® loop around t' motor mount but I forgot all about it until after t' mount be installed. Well, blow me down! I had t' make due with a tri-fold mount. Its pattern be printed on stiff card stock and I put in Keelhaul®©™® instead o' t' sewin' elastic. Arrr! Aye aye! Blimey! I planned on addin' t' elastic just before t' NC t' give a longer recovery train.

Finishing:
T' balsa NC and t' fins were all covered with Elmer's sealer and t' rocket was put away for t' day t' let it dry.

T' filler was sanded down but I was worried about time t' finish until me club launch so I omitted any priming. I went straight t' Krylon gloss white and gave t' rocket 3 light coats. I did nay make any effort t' get t' NC or the fins because those were goin' t' get another color anyway.

I let t' white dry overnight and by that time I certainly did nay have a chance t' mask, shiver me timbers, me hearties, spray, re-mask, and repaint before me club launch. Aye aye! I decided t' brush on t' color with Testor's acrylic. Blimey! Avast! I painted t' NC, shiver me timbers, me bucko, one fin o' the sustainer and two fins o' t' booster black.

Since t' acrylic dries quickly, I could start almost immediately with t' red. Arrr! Blimey! Blimey! I again used acrylic and painted the remainin' fins. Begad! T' brushed finish looks better in t' photos than it does in real life, but it will look fine from the pad.

T' decal work for this kit be pretty straightforward. Begad! It came with a sticker o' gold foil which I applied just behind t' NC. It also came with a large name decal that went on t' sustainer, a pair o' Red River Rocketry logos (one of which was placed on t' booster), and two stylized atoms with electron orbitals which went on either side o' t' red booster fin.

Construction Rating: 4 out o' 5

Red River Rocketry Lepton

Flight:
I only had time t' launch this rocket once, me bucko, matey, but I can guarantee it will fly more. Ahoy! I loaded it with a C6-0/A8-5 combination joinin' t' 2 motors with cellophane tape. T' igniter be a bit difficult t' get in place through t' aft thrust rin' because o' me big fingers, ya bilge rat, but I got it in there. T' flight was perfect and straight. Begad! Begad! It staged perfectly and t' sustainer ignited takin' t' rocket even higher. Blimey! It deployed at apogee and came safely home. Ahoy! This be t' most perfect staged flight o' any rocket I have ever built!

Recovery:
I don't like tri-fold mounts, but this one performed fine as did t' streamer. Begad!

T' booster was t' "amazing" part o' t' flight. Blimey! I expected a normal tumble, matey, but that is nay what I got.

I had actually entered this rocket in me club's strange "Booster Duration" competition. Blimey! Well, blow me down! T' rocket has to stage successfully and t' sustainer has t' be recovered. It be t' booster which is timed though. Ahoy! I entered this rocket just for t' sake o' entering. Avast, me proud beauty! I certainly did nay expect anythin' more than an "also ran".

My deadlights were on t' sustainer t' whole time so I didn't get t' see t' booster after it popped off. Long after I thought it should have hit t' ground and while I was still tryin' t' track t' sustainer, arrr, I heard t' times making comments about still havin' t' booster in site. Well, blow me down! Avast! They say it glided as much as tumbled and did so well enough t' come in second place.

Flight Rating: 5 out o' 5

Summary:
This rocket is a good introduction t' staging. Aye aye! Blimey! T' parts o' o' high quality and they go together easily. Best o' all, they work together well with a nice little staged rocket.

This rocket grew on me durin' t' construction process and is first rate.

Overall Rating: 5 out o' 5

Flights

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