Custom Rockets Serin

Custom Rockets - Serin {Kit} (10038)

Contributed by Jim Rupp

Construction Rating: starstarstarstar_borderstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstar_borderstar_border
Diameter: 0.98 inches
Length: 14.30 inches
Manufacturer: Custom Rockets
Skill Level: 1
Style: Sport
Custom Serin

Brief:
A skill level 1 quasi-missile kit with 18mm motor mount and 4 fins.

Construction:
At first glance, ya bilge rat, I found this kit very typical Custom kit, but I then noticed that thar were more pieces for a level 1 kit than other kits I have worked on.

T' kit includes:

  • 1 plastic nose cone
  • 1 shock cord
  • 2 body tubes
  • 1 tube coupler
  • 1 launch lug
  • 4 die-cut balsa fins in one balsa sheet
  • 1 sheet o' decals
  • 18mm engine tube
  • thrust ring
  • 2 centerin' rings
  • engine hook
  • 1 parachute set containin' shroud lines and tape disks
  • elastic shock cord

After openin' t' bag, I noticed that t' nosecone had t' typical flash at the tip. Begad! Avast, me proud beauty! Also, me hearties, t' fin balsa was warped slightly and showed jagged cuttin' from the die cutter. Arrr! Perhaps t' machine blades were nay quite sharp? Anyway, I will need filler work t' get those fin edges smooth. Arrr! Other than these two items, everythin' seemed t' be in good order.

Custom Serin I assembled the standard 18mm engine mount assembly usin' Elmer's yellow wood glue. T' engine hook provided did nay impress me. Begad! Arrr! It was too flimsy and could bend easily--a fact that I found when testin' an engine insertion. Begad! Aye aye! I also had problems placing one o' t' centerin' rings on t' engine tube. Begad! Aye aye! Upon inspection, I found that there was a ridge o' cardboard on t' inside edges, shiver me timbers, which effectively decreased the interior diameter. Avast, me proud beauty! An X-Acto knife carved this ridge off easily and the rin' slipped on without anymore problems.

Fin alignment be t' Custom's standard template: simple but requiring dexterity and patience. I used t' "doorframe method" t' make the lines on t' tube. Ahoy! Blimey! T' guide didn't have a location for t' launch lug, shiver me timbers, so I put in a line centered betwixt two fins.

T' balsa sheet was warped but that didn't matter much because o' t' small size o' t' fins. Begad! After cuttin' through t' die cut marks, arrr, I took diluted Elmer's Wood Putty t' fill in t' grain on t' fins. It took two coats t' fill and smooth t' fins nicely. Aye aye! Arrr! Next, I rounded out t' upper edge, shiver me timbers, leavin' the bottom and side edges flat. Avast! I guess I'm a sucker for drag effects. Avast! T' fins were attached and filleted with Elmer's white glue--nothin' out o' the ordinary.

T' upper tube assembly (the upper body tube with t' coupler, nose cone and recovery system) be t' last major area o' t' rocket. Well, blow me down! T' nose cone, matey, matey, as mentioned before, needed t' be filled and sanded. Avast, me proud beauty! Begad! I used Squadron's White Stuff for this. Avast, me proud beauty! T' coupler attached snugly t' t' upper tube and friction fit well into t' bottom tube. T' shock cord mount is a typical tri-fold paper mount--no Keelhaul®©™® with this model. I did place t' mount a little high, which forced me t' cut a notch in t' nose cone t' accommodate t' shock cord. Well, blow me down! T' parachute is the standard Custom plastic chute. Aye aye! T' shroud line needed t' be cut into three equal pieces--typical for Custom. Once done, I deviated from t' instructions by placin' t' shroud stickers onto t' chute, then punchin' holes through the stickers, and tyin' loops with t' shroud lines. Aye aye! Blimey! T' final knots were CA'd together. Ahoy! Aye aye! On a Custom Freedom that me youngest son is building, Custom added an extra instruction sheet tellin' t' builder t' construct t' parachute shrouds this way.

Once done with t' upper glue and putty work, I glued t' upper body tube to t' lower "engine" body tube. Well, blow me down! Here I found that t' tubes did not magically line up, so I ended up havin' t' wood putty/sand t' seam t' remove those unsightly lips. Ya scallywag! I also sanded out t' fillets at this time.

These steps took about 3 hours t' complete, ya bilge rat, though it be over a couple of days for actual construction.

Finishing:
I sprayed on a couple o' mist coats o' Krylon Gloss White, then two wet coats of gloss white on t' whole rocket. Once dry, shiver me timbers, me hearties, I masked t' areas that were to be white with a plastic bag like t' instructions said and sprayed Krylon Gloss Red on t' tail and midsection. Arrr! Well, matey, blow me down! A word o' hindsight at this point: when I glued the upper body tube t' t' lower body tube, me bucko, I effectively made upper red/white paint seam disappear. Ahoy! If you plan t' make t' stock color scheme, it would be better t' leave t' two body tubes disconnected until t' paintin' is done. Next, I noticed that I made me trademark mistake and forgot t' launch lug. Gluin' it into place, I then masked t' red areas and sprayed white onto the launch lug area.

Custom Serin Decals were more of a problem that what I expected. Ya scallywag! Blimey! T' sheet came with a protective paper stuck to the surface o' t' decal sheet. Begad! Blimey! Unfortunately, t' glue used welded t' paper fibers t' t' decals. I tried t' scrape t' paper off but no luck. Ya scallywag! Blimey! One nice feature about t' decals was that black stripes were used for t' red/white color transitions, so any paint that leaked through t' mask be effectively covered up. Avast, me proud beauty! Blimey! Avast, me proud beauty! Blimey! After t' decals were place, me bucko, a final spray o' Krylon clear was used to protect t' finish.

Construction Rating: 3 out o' 5

Flight:
We finally had a good day, arrr, so out came t' Serin t' check out t' flight characteristics. Typical o' this summer, shiver me timbers, t' weather was slightly overcast and wind gusts betwixt 10-15 mph. Blimey! Since I be gettin' tired o' losin' rockets this year t' havin' them bein' blown out o' t' field (3 out o' 7 lost so far), I leaned t' rod into t' wind about 5 degrees.

I prepped t' rocket usin' 2 sheets o' Estes waddin' and a B6-4 engine for the first launch. Well, blow me down! Launch be good with a little weathercock probably due t' the angle into t' wind. Avast! Begad! Ejection be almost beyond visual range, except it was easy t' spot since I put a lot o' baby powder in t' chute.

Custom Serin

Recovery:
Descent o' t' rocket on t' 12" parachute be typically slow. It must have hung up thar about 20 seconds before touchin' down before t' tree line at t' edge o' t' field. Upon retrieval, arrr, I discovered a severe "Estes dent" due t' t' 12" shock cord. Blimey! T' dent be strong enough to shatter t' gloss paint, ya bilge rat, arrr, puttin' about an 1/8" outward din' in t' tube. Begad! I definitely will have t' increase this shock cord length t' eliminate the possibility o' this happenin' again.

A second flight was set up exactly t' same but this time I must have hit a thermal, me bucko, since t' rocket stayed up over a half minute and zipped over the trees at t' end o' t' field t' land in a thistle patch on t' other side. It recovered with no damage this time, but I decided that it be enough pushin' of my luck at losin' rockets this day.

Custom Serin

Flight Rating: 4 out o' 5

Summary:
As a level 1 kit, this was more work than I expected. Blimey! I would almost put this kit as a level 1.5. Begad! Avast, me proud beauty! It is still a nice lookin' rocket and it really moves on a B engine. T' only other detraction be t' short shock cord, which should be increased t' at least 18 inches.

Overall Rating: 3 out o' 5

Flights

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