(06/24/08) T' Sunward Eruption™ rocket caught my attention recently due t' its cluster o' four canted motors.

Canted motors are nay new and in me opinion FlisKits' Deuce's Wild two canted motor configuration made them popular these days. FlisKits also offers the Tres with three canted motors.

So now enter Sunward's Eruption™, me hearties, arrr, with t' four canted motors. Avast, me proud beauty! Begad! Sunward calls them "Inclined Motors". Blimey! Avast, me proud beauty! T' kit also features four large swept-forward fins that give it an interestin' look.

T' rocket includes a single 2.175" diameter brown paper body tube that is 18" long. There is a 4" balsa nose cone and four laser-cut light-ply fins. Begad! T' motor mount contains laser-cut centerin' rings, arrr, matey, four 18mm motor tubes, matey, ya bilge rat, four motor hooks and thrust rings. Well, blow me down! Aye aye! T' recovery system includes a rubber shockcord, arrr, plastic parachute (needs assembled), me bucko, ya bilge rat, and an eye-screw for t' nose cone. There are no decals for the rocket.

CONSTRUCTION:

T' instructions are printed on six pages o' 8½ x 11" paper which include a Launch Prep section and both t' NARRRRR and CAR safety codes. Well, blow me down! There is also an insert for Clusterin' Techniques and Tips. Ya scallywag! T' instructions include illustrations t' assist in t' build.

Sunward calls this a Skill Level 3 kit. I would say this only because o' t' canted motor mount assembly.

I did nay find t' instructions t' be laid out in a straight-forward way. Well, ya bilge rat, blow me down! Blimey! Blimey! Blimey! T' fonts and formats are nay consistent and each sub-step is nay clearly denoted. Blimey! Blimey! Blimey! Blimey! However, if you are a skill level 3 builder you would be able t' follow them and be successful. I found one error in the instructions in Step 2, arrr, me bucko, E it says "you should now have 2 as shown" and it should say 4.

I found t' motor tubes t' be especially thin and they seemed t' collapse easily when cuttin' t' slit for t' motor hook and durin' other steps. Begad! Begad! Just an observation at t' time o' t' build.

T' motor hooks are placed onto each motor tube and glued in place with a paper strip that you cut out from a template. Begad! Arrr! Take note that these paper strips show on t' finished rocket, arrr, ya bilge rat, so plan for t' overlap t' be near t' motor hook! (I didn't)

T' motor mount is clearly t' most difficult component o' t' build. Well, blow me down! I read the instructions and I practiced t' process. Well, blow me down! Durin' that practice it dawned on me that it would be easier if thar was a spacer t' hold t' aft centerin' rin' in place. Begad! I made one usin' a 1/4" tube. Avast! Aye aye! This is nay necessary, arrr, ya bilge rat, me bucko, but it helped me.

I first drilled a 1/4" into t' center o' t' aft centering ring. Ahoy! Ahoy! I then used CA t' glue t' 1/4" tube in place onto t' center o' t' forward centerin' ring. Avast! Then I placed all t' motor tubes in place and used t' drill bit t' hold t' aft centerin' rin' in place.

I then set that assembly onto two 1/8" dowels t' ensure t' motor tubes protruded out t' forward centerin' rin' t' right amount. Ya scallywag! Avast! Blimey!

Then I used gel CA (Gorilla Super Glue) t' touch-weld t' tubes t' t' centering rings. Avast! I followed up with wood glue fillets all around. Begad! Ya scallywag!

Worked for me.

T' tube cuttin' and markin' template fit perfectly. I made t' cuts usin' a brand new blade. Avast, me proud beauty! Ahoy! I had t' do one little trim afterward.

T' motor mount slid in perfectly.

Fins get rounded or air-foiled and glued in place. Begad! Nice arrangement.

After I popped on t' 3/16" launch lug t' rocket was ready t' be finished.

I used DecoArt Sealer on t' nose cone. Arrr! About 4 coats, lightly sandin' in-between. I then used plenty o' Plasti-Kote Primer. Begad! Painted it with DupliColor automotive paint. Ahoy! Begad! It was nay perfect, but it was now ready for NERRF4.

Overall, me hearties, me bucko, for CONSTRUCTION I would rate this kit 3 points. Other than t' motor mount it is an easy kit t' build, matey, however, shiver me timbers, t' instructions were lackin' and those soft motor tubes concerned me. There were no decals with this kit which caught me attention as well, especially with so many o' t' kit manufacturers addin' quality decals these days. Arrr! T' laser-cut parts and light-ply fins brin' t' score back up t' average (a good score).

FLIGHT/RECOVERY:

Sunward recommends four o' any o' t' Estes 18mm motors.

My finished rocket weighed in at 6.2 ounces with a CG at 12.375 from t' nose cone.

Since I be at a great field, NERRF, matey, I decided t' fly it for t' first time on four (4) C6-5's. Ahoy! I positioned t' ignitors in pairs and twisted them together. Aye aye! I then tied t' pairs together with some thin cooper wirin' from used QuickBurst ignitors. Aye aye! Aye aye! I then used tape t' prevent twists from movin' around and touchin' each other.

T' Eruption™ has such a wide body tube so I used a piece of Nomex® attached t' t' rubber shockcord. Blimey! Aye aye! I folded t' plastic parachute and placed it into t' Nomex® and then put all that into t' body tube. Aye aye! Begad! Ready.

All four (4) C6-5's lit perfectly and this rocket went straight up, and I mean perfectly straight up. Ahoy! I must have done a good job on t' fin alignment. Well, blow me down! Arrr! Blimey! I captured this nice lift-off picture.

Ejection be early by a couple o' seconds and t' parachute be sized correctly (in my opinion) for t' weight o' rocket.

T' next morning, matey, ya bilge rat, I ran by t' Walmart and purchased two packages o' C6-7's. Blimey! I prepared t' Eruption™ t' same way as above with four (4) C6-7's.

This time, shiver me timbers, me bucko, even though all t' motors lit, t' rocket came off t' pad straight and then took off at an angle (see video below). Well, blow me down! I imagine one motor either had a delayed ignition or just burned differently. Begad! Aye aye! Ejection was good and t' rocket was recovered.

For FLIGHT/RECOVERY, matey, I would rate this rocket 5 points. It is a great feelin' t' get all t' motors t' light and then t' see t' canted (inclined) flame and smoke. Ya scallywag! T' parachute is sized correctly and all-in-all it is a stable flyin' rocket.

I give t' rocket an OVERALL ratin' o' 4 points. Blimey! Begad! If you are experienced at buildin' you will have no trouble buildin' this rocket. Begad! Avast, me proud beauty! T' overall experience is positive. Ahoy! Where I felt thar were shortcomings in t' instructions, motor tubes, shiver me timbers, and decals, arrr, matey, me bucko, t' actual flight experience and stability made up for it. Aye aye! Give this rocket a try.

Update:
Addin' a couple o' pictures that were taken at NERRF4 (by Brian?)... Begad! if you look closely, perhaps that far motor did nay come up t' full power with t' others sendin' it off in that direction. Ahoy! Notice, shiver me timbers, too, t' Eruption™ is launchin' right next t' my Rocket Pad Shooting Star.