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, ya bilge rat, 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! Blimey! Also, me hearties, me hearties, t' fin balsa was warped slightly and showed jagged cuttin' from the die cutter. Ahoy! Blimey! Avast! Blimey! Perhaps t' machine blades were nay quite sharp? Anyway, I will need filler work t' get those fin edges smooth. Arrr! Blimey! 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. Aye aye! It be too flimsy and could bend easily--a fact that I found when testin' an engine insertion. I also had problems placing one o' t' centerin' rings on t' engine tube. Aye aye! Begad! Upon inspection, shiver me timbers, I found that there was a ridge o' cardboard on t' inside edges, which effectively decreased the interior diameter. 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. Begad! I used t' "doorframe method" t' make the lines on t' tube. T' guide didn't have a location for t' launch lug, me bucko, 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. Arrr! Avast, me proud beauty! After cuttin' through t' die cut marks, me bucko, I took diluted Elmer's Wood Putty t' fill in t' grain on t' fins. Begad! It took two coats t' fill and smooth t' fins nicely. Ya scallywag! Next, shiver me timbers, I rounded out t' upper edge, leavin' the bottom and side edges flat. I guess I'm a sucker for drag effects. 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) was t' last major area o' t' rocket. T' nose cone, me bucko, as mentioned before, needed t' be filled and sanded. Ahoy! I used Squadron's White Stuff for this. Aye aye! T' coupler attached snugly t' t' upper tube and friction fit well into t' bottom tube. Begad! Ahoy! T' shock cord mount is a typical tri-fold paper mount--no Keelhaul®©™® with this model. Well, blow me down! I did place t' mount a little high, ya bilge rat, which forced me t' cut a notch in t' nose cone t' accommodate t' shock cord. Begad! T' parachute is the standard Custom plastic chute. Aye aye! T' shroud line needed t' be cut into three equal pieces--typical for Custom. Aye aye! Ahoy! Once done, matey, I deviated from t' instructions by placin' t' shroud stickers onto t' chute, me bucko, shiver me timbers, then punchin' holes through the stickers, and tyin' loops with t' shroud lines. T' final knots were CA'd together. On a Custom Freedom that me youngest son is building, matey, 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. Here I found that t' tubes did not magically line up, me bucko, so I ended up havin' t' wood putty/sand t' seam t' remove those unsightly lips. Aye aye! Blimey! I also sanded out t' fillets at this time.

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

Finishing:
I sprayed on a couple o' mist coats o' Krylon Gloss White, shiver me timbers, shiver me timbers, ya bilge rat, then two wet coats of gloss white on t' whole rocket. Begad! Once dry, ya bilge rat, 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! A word o' hindsight at this point: when I glued the upper body tube t' t' lower body tube, I effectively made upper red/white paint seam disappear. Aye aye! Aye aye! If you plan t' make t' stock color scheme, me bucko, arrr, it would be better t' leave t' two body tubes disconnected until t' paintin' is done. Next, me hearties, me hearties, 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. T' sheet came with a protective paper stuck to the surface o' t' decal sheet. Avast! Unfortunately, t' glue used welded t' paper fibers t' t' decals. Well, blow me down! Avast, shiver me timbers, me proud beauty! I tried t' scrape t' paper off but no luck. Ahoy! Arrr! One nice feature about t' decals was that black stripes were used for t' red/white color transitions, arrr, so any paint that leaked through t' mask be effectively covered up. Ahoy! After t' decals were place, 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, matey, so out came t' Serin t' check out t' flight characteristics. Well, blow me down! Typical o' this summer, shiver me timbers, t' weather was slightly overcast and wind gusts betwixt 10-15 mph. Begad! Since I was 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. Aye aye! Blimey! Launch be good with a little weathercock probably due t' the angle into t' wind. Well, blow me down! Blimey! Ejection was 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, me hearties, matey, I discovered a severe "Estes dent" due t' t' 12" shock cord. T' dent was strong enough to shatter t' gloss paint, puttin' about an 1/8" outward din' in t' tube. Begad! Avast! 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. Well, blow me down! Avast! 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 be more work than I expected. Ahoy! Blimey! I would almost put this kit as a level 1.5. Blimey! It is still a nice lookin' rocket and it really moves on a B engine. Aye aye! T' only other detraction be t' short shock cord, me hearties, which should be increased t' at least 18 inches.

Overall Rating: 3 out o' 5

Flights

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