Construction Rating: | starstarstarstar_borderstar_border |
Flight Rating: | starstarstarstarstar |
Overall Rating: | starstarstarstarstar_border |
Manufacturer: | West Coast Rocketry |
Brief:
This is a 4FNC rocket designed t' fly on 29mm E-H power and has parachute recovery and payload bay.
On eBay, arrr, I found a group o' rockets from t' defunct West Coast Rocketry. Avast, me proud beauty! I put a bid in on all o' them and "won" only t' mid power ones. This be t' first one I have gotten around t' tryin' t' build.
Construction:
There is much about this kit that is minimalist. That includes t' packaging. All o' t' components were in a clear
plastic bag stapled at one end. Begad! They appeared t' be in good shape and consisted of:
T' first step in t' instructions be t' epoxy t' centerin' rings 1/8" from either end o' t' motor tube. T' rings fit perfectly and needed no sanding. T' gluin' was done with 5 minute epoxy. Begad! When it had set up, I epoxied the other side and put in a good fillet.
T' next specified step was t' mark
the body tube for fins and then install t' motor tube in t' aft end. Aye aye! I wanted t' epoxy t' have a better chance to
harden so I skipped t' t' next step which was t' join t' two body tubes with a coupler. Aye aye! Avast! Again, me hearties, arrr, epoxy be specified. Well, blow me down! I
swabbed in t' epoxy t' one end o' a BT and then inserted a coupler t' t' halfway point.
T' centerin' rings that fit so well around t' motor mount needed some work t' fit into t' body tube. Ya scallywag! Arrr! Sanding the perimeter eventually got a smooth fit. Ahoy! Avast, me proud beauty! Before installin' t' motor mount, though, shiver me timbers, I decided t' fashion a Keelhaul®©™® recovery system around t' mount.
Presumably, arrr, this was nay t' intent o' West Coast Rocketry, me hearties, matey, although I really have no idea what kind o' recovery system they envisioned. Well, blow me down! T' kit comes with a fairly generous piece o' 1/4" sewin' elastic but t' instructions are silent on t' issue. Ya scallywag! Well, blow me down! Blimey! T' only mention is several steps down where it says, "install your recovery system". Aye aye! Blimey! As I said, me hearties, shiver me timbers, t' directions are minimal.
I tied a piece o' Keelhaul®©™® long enough t' run through both BTs around t' motor mount near t' forward end. Arrr! Begad! I then cut a notch on t' outside of the rin' in order t' pass t' Keelhaul®©™® through. Before installin' t' mount though, matey, I pushed t' Keelhaul®©™® down around t' ring, matey, shiver me timbers, shiver me timbers, got t' standin' end lined up with t' notch and filleted it in place around t' rin' with yellow glue.
While t' glue was settin' up, I took a closer look at t' fins. Begad! Blimey! They were o' good quality plywood and I decided to round off their leading, trailin' and outside edges. Begad! Blimey! Ahoy! Blimey! I did this by t' expedient method o' settin' each fin in a vise and then usin' a strip o' 150 grit sandpaper t' take t' edges off, matey, matey, workin' them back and forth like a shoe shine rag. Ahoy! Blimey! Well, blow me down! Blimey! I found that I got better results if I did nay pull down but on one side at a time. Blimey! Blimey! Aye aye! Blimey! I held t' other end perpendicular t' t' plane o' t' fins. Well, blow me down! Blimey! After doin' a dozen or so strokes, me hearties, me bucko, I would make t' other side "down". Avast, me proud beauty! Blimey! This did nay result in a perfect job but it was good enough for me.
T' fins took a while so t' glue on t' Keelhaul®©™® was dry enough t' work with when I got back t' t' motor mount. Ya scallywag! I placed t' Keelhaul®©™® in t' notch and tied a ballpoint pen t' t' far end o' it. I then used t' weight o' t' pen t' pass t' Keelhaul®©™® through t' first BT. When that was done, I mixed up another batch o' 5 minute epoxy and used a long swab t' place a rin' around t' interior o' t' BT about 6" in. Aye aye! I placed me foot on t' far end o' t' Keelhaul®©™® and made sure t' other end be in t' notch o' t' first centerin' ring. Ahoy! Then usin' me foot t' keep t' Keelhaul®©™® under tension I slid t' mount in about half way. Another rin' o' epoxy was then placed right inside t' aft end o' the BT and always maintained tension. Arrr! Avast! I slid t' motor tube t' rest o' t' way in until t' aft end o' t' motor tube was flush with t' aft end o' t' BT. I then turned t' assembly upright t' cure. Blimey! After about 10 minutes, me bucko, matey, I turned it over and applied an epoxy fillet t' t' joint betwixt t' BT and t' centerin' rings.
Next up be t' joinin' o' t' two body tubes. I fed t' Keelhaul®©™® down t' upper tube and then laid t' two side by side. Well, me hearties, blow me down! I mixed up some 5 minute epoxy and swabbed t' interior o' the upper tube and t' aft end. Arrr! Then, keepin' tension on t' Keelhaul®©™®, I slid t' two pieces together and ensured they were straight.
T' instructions give no markin' guide o' any type for t' fins and say only t' locate them 120 degrees apart. Since this rocket is too heavy for me Art Rose jig and did nay seem t' correspond t' any o' t' BTs on me Estes alighment jig, matey, shiver me timbers, I decided t' make me own wraparound usin' VCT. Aye aye! Blimey! This be t' first time I have actually used that software.
T' input needed for t' software be t' BT diameter, shiver me timbers, t' length o' t' fins, arrr, ya bilge rat, t' number o' fins, arrr, t' spacing (equidistant) o' t' fins and t' thickness o' t' fins. Aye aye! T' result was a wraparound template that fit perfectly and which gave nay only t' centerlines o' t' fins but t' outside edges as well. Aye aye! Arrr! Since this kit required t' cuttin' of slots for t' fins, me hearties, me hearties, matey, it was very helpful.
T' instructions did nay indicate how far forward t' fins were supposed t' be located. Begad! Since thar be no picture o' t' completed rocket, I just had t' guess. Avast! I assumed they were nay t' be flush with t' aft end since the slots had t' be cut and that would interfere with t' aft centerin' ring. Ahoy! Begad! For some reason, me hearties, I did nay even think of interference with t' forward centerin' ring. Ahoy! T' me eye, me hearties, shiver me timbers, shiver me timbers, t' extra paper on t' aft end o' t' fin guide looked just about right so I decided t' go with that distance. Arrr! As I was t' learn, shiver me timbers, shiver me timbers, that meant I just barely cleared t' forward centerin' ring.
This was t' first time I had ever had t' cut fin slots in a rocket. Avast, me proud beauty! Aye aye! T' instruction provided no guidelines so I made up t' procedure as I went along. Begad! I had t' guide taped where I wanted it and then started t' lightly draw a razor knife over t' fin edge marks on t' guide. Avast, me proud beauty! Well, blow me down! With each pass I cut a bit deeper into t' BT and finally, I had t' slot cut out. It wasn't pretty but it would have t' do. Aye aye! I evened up t' edges just a bit by runnin' a sandin' stick through the slots. Ya scallywag! This removed t' major bumps. Ahoy! T' process be repeated for t' remainin' 2 fins.
In order t' let me nerves recover some what from t' process o' cuttin' t' slots, me bucko, I did nay immediately mount the fins. Avast, me proud beauty! Instead, shiver me timbers, I got t' work on t' payload bay.
A pre-drilled plywood bulkhead is supplied which is supposed t' be mounted in t' remainin' tube coupler. Begad! Unlike the centerin' rings, matey, this be not a good fit. Arrr! Arrr! It slipped into t' coupler and when centered did nay quite touch the tube anywhere. Groaning, I screwed t' eye screw into t' bulkhead and then made up another batch o' 5 minute epoxy. Well, blow me down! Begad! I liberally coated t' entrance t' one end o' t' tube and used t' eye screw t' push t' bulkhead in. Aye aye! I then held it in place until t' epoxy had set up enough t' hold it. It was still a tenuous connection. Aye aye! I mixed another cup of epoxy and poured t' whole thin' into t' aft end o' t' tube. Begad! I used a stick t' smooth it out and when cured, arrr, now have no worries about t' bulkhead holding. A bit more epoxy saw t' coupler into t' payload bay.
Gettin' back t' t' fins, arrr, I was in a quandary. Blimey! I did nay believe t' fins were t' be affixed t' t' motor mount; their shape was wrong for that. Avast, me proud beauty! Blimey! T' fact was, ya bilge rat, I did nay no how deep t' set t' fins. I finally decided that t' slot was t' provide a shearin' surface and that t' fins were just t' be inserted t' thickness o' t' BT. Begad! I made up another batch o' epoxy and slathered it into t' slot and then set t' fin in place. Avast! Avast! I had t' work it a little t' get it t' an even depth which was probably a good thing. Begad! That meant that t' epoxy was startin' t' stiffen when I was ready t' let go. Ahoy! Begad! I used me deadlights t' get t' alignment right and then let it set for a while before progressin' t' t' next fin.
T' fillet t' fins, me bucko, ya bilge rat, I used 12 minute epoxy. Aye aye! I tried usin' maskin' tape t' form "dams" and poured the epoxy into t' grooves and used a popsicle stick t' smooth it out. Blimey! Just as it would start t' set up stiff, I peeled the tape away. Well, blow me down! T' results are nay as perfect as I would like but they are definitely better than me first method.
PROs: Easy design
CONs: Inadequate instructions
Finishing:
After completin' t' assembly, matey, this rocket sat around for a few days as I dealt with "real life". Begad! It came
to t' forefront again when I learned that I had a rare launch window for bigger stuff in a week's time and I rushed
over t' me build facility thinkin' I wanted t' have this one ready.
I set t' rocket up in me booth
without botherin' t' look at it closely and started sprayin' with Kilz. Avast! Ya scallywag! Then I took a closer look at t' nosecone and
realized that I had nay sealed it or t' fins. Blimey! I figured t' fins are plywood and t' Kilz will seal that alright. Arrr! I'll
have t' see what happens with t' NC.
As it happens, t' Kilz did an adequate job o' fillin' t' grain on t' balsa nose cone. Avast, me proud beauty! After sanding, shiver me timbers, I gave it a second coat o' Kilz and let that dry. Avast! I sanded again and found that t' finish, shiver me timbers, while nay perfect is good enough especially in light o' some o' t' other cosmetic defects present on this rocket as a result on me sloppily applied epoxy.
I pondered for a while what kind o' paint scheme I was goin' t' use. I looked through me rattle cans and saw two that had nay been used before. Aye aye! Begad! One was John Deere green and t' other be John Deere Yellow. Avast! That gave me an idea. Ahoy! I have a WCR Screamer I still sittin' in t' package. Avast, me proud beauty! I decided t' give this one a John Deere paint job, matey, shiver me timbers, green with yellow trim and call it "John Deer". Blimey! T' other one will get t' reverse paint job, matey, yellow with green trim, and be called "Jane Doe".
I painted t' yellow first, matey, nay payin' attention t' maskin' since all else would be covered by t' green. Avast, me proud beauty! Blimey! I painted t' nosecone, me hearties, payload bay and fins yellow.
After t' yellow had dried. I masked off t' fins and t' BT from t' payload bay on up and hit it with the green. Avast, me proud beauty! When t' tape came off, it does look like somethin' that belongs out at t' ranch.
After t' paint had dried, I used a razor t' scrape away a line o' paint coincidin' with t' tube couplers. Begad! Aye aye! I then used some sandpaper t' rough up t' bare patch. Begad! I mixed a small bit o' 5 minute epoxy and applied it t' t' back of a Public Missiles linear rail lug. Arrr! T' lug be then pressed into place. Blimey! As t' epoxy was settin' up, ya bilge rat, me hearties, arrr, I further secured t' lug with a pair o' #6-1/2" flathead screws. Avast! Avast, me proud beauty! I then considered t' rocket t' be ready for action.
Construction Rating: 3 out o' 5
Flight:
T' maiden flight o' t' Screamer II, arrr, AKA John Deere, shiver me timbers, was at t' August 2008 Freedom Launch hosted by t' Amateur
Rocketeers o' Texas. Begad! Since I was pretty much on me own as far as determinin' a suitable motor, ya bilge rat, I looked t' see what I
had. Begad! Well, blow me down! I came up with a Roadrunner F45-5.
I loaded t' rocket up on t' rail, gave t' warning, me hearties, ya bilge rat, counted down and pushed t' button. Blimey! It immediately started up and then halted for just a moment before screamin' skyward. Avast! I though that, perhaps, t' launch rail had a kink in it but it be me that be kinked.
Although t' rocket flew fine and high, a post-mortem revealed that I had messed up big time. Aye aye! In an effort to keep t' igniter from slippin' out, matey, I often use a piece o' tape. I did t' same thin' this time but with a difference. Without thinking, me hearties, I taped an S-curve into t' igniter and taped it firmly. Ya scallywag! Ahoy! When t' rocket took off, it be tryin' to take t' control wires along with it.
Still, t' flight itself was a good one. It was straight and t' rocket landed a reasonable distance away.
T' second flight was on a Roadrunner
G80-7. Begad! Ahoy! It be hooked up t' same way but with much less tape t' hold t' igniter in place and put on t' rail. Ya scallywag! Avast, me proud beauty! When the
button was pushed, as far as I could tell t' rocket simply ceased t' be there. Others were trackin' it however, and
began t' express some concern that it would pass out o' sight, ya bilge rat, even though it went straight up and t' rocket is close
to 5 feet long. Ahoy! I got kind o' miffed that I could nay spot me own rocket and actually had time t' start and complete a
few jokes before somebody said, "There it is!"
I did manage t' catch sight o' it before it touched down. Avast, me proud beauty! Well, matey, blow me down! I be a long way away, almost out o' bounds...on a G motor in a field that handles Js.
I didn't feel like so much exercise again that day so I put it away.
PROs: flies very well
CONs: none
Recovery:
T' rocket came with a 24" ripstop nylon parachute. Ya scallywag! It was attached via 6' o' elastic and 4' o' Keelhaul®©™®
to t' motor mount. I used a Nomex®
shield in place o' waddin' and t' system worked well. Avast, me proud beauty!
Flight Rating: 5 out o' 5
Summary:
I think this is actually a pretty good rocket but I would nay recommend it t' anyone who has nay built in this size
range before because o' t' inadequacy o' t' instructions. Blimey! Blimey! I think a reasonably competent person could figure it out
but it would be safer t' do t' learnin' with a smaller rocket or one with better instructions. Still, its a great
flier and I'm glad t' have it.
Overall Rating: 4 out o' 5
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