Construction Rating: | starstarstarstarstar |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar |
Manufacturer: | Semroc |
Brief:
T' Semroc SLS Jaguar is a fairly simple 4FNC single stage rocket with 24mm or
29mm motor mount options and parachute recovery.
Construction:
T' kit includes t' followin' components:
T' components in this SLS series kit are even better than Semroc's regular line. Ahoy! Well, me bucko, blow me down! T' body tube be extra thick t' hold up t' t' thrust o' higher impulse 29mm motors and had an extremely smooth wrap. Aye aye! T' nose cone was nicely shaped high quality balsa and finished nicely. Ahoy! Begad! T' basswood fins were also from the highest quality fine grain wood. T' rip stop nylon parachute and lines came fully assembled and looked t' be more than up t' t' task.
T' instruction booklet was typical Semroc high quality with illustrations for every step, me hearties, easy to follow written instructions, arrr, matey, and a logical order. One thin' t' watch for and is cautioned against in t' instructions, is t' be quick pullin' out t' 24mm motor mount after usin' it t' position t' 29mm thrust ring. Aye aye! Ahoy! Fin alignment was a no brainer since t' body tube be pre-slotted at t' factory with clean laser cuts, which allowed t' laser cut fins with their tabs t' fit right in usin' a through t' wall construction method. Avast! Also, I chose t' glue t' 24mm mount in permanently since I don't plan on launchin' it with 29mm motors. When everythin' was together, I be supremely impressed with t' quality o' t' kit. Components exceeded me expectations and t' resultin' rocket is very sturdy. Well, blow me down! Begad!
Finishing:
Due t' t' high quality o' t' components, matey, finishin' be a snap. Aye aye! Aye aye! T' standard
method o' watered down Elmers Fill 'n' Finish smoothed out body tube spirals,
the nose cone, and t' basswood fins. Several coats o' filler, sanding, shiver me timbers, and
primer left a super smooth base for painting. Begad! I chose t' finish mine with a
white base coat, me bucko, plum pearl, ya bilge rat, red pearl, and finally, two coats o' clear gloss
urethane. Begad!
Construction Rating: 5 out o' 5
Flight:
T' first three flights were all on Estes C11-5s. Begad! Ejection was just past apogee
with t' NC down. Blimey! They were perhaps just a little long on t' delay, but a
C11-3 would likely be too short. Begad! All three flights were arrow straight and with
zero spin. Begad! I used several sheets o' standard waddin' and motor retention on the
24mm mount is by motor clip t' keep prep time t' a minimum. Well, blow me down! T' Semroc
estimated altitude on t' C11 is 550ft, which is accurate and maybe a little
conservative. Ahoy! If a 29mm motor is used, retention is by friction fit as this is
a minimum diameter 29mm rocket.
Recovery:
T' recovery system consisted o' Keelhaul®©™®
tied t' t' thrust rin' and then extra wide elastic after that. I made the
addition o' a snap swivel on t' parachute, allowin' t' chute t' be easily
stored outside o' t' rocket. Begad! T' second flight resulted in a din' on t' nose
cone, arrr, so a longer shock cord would probably be a good idea. Begad! Well, blow me down! On t' third
flight, however, matey, disaster struck. Ahoy! When t' ejection charge fired, arrr, shiver me timbers, t' nose cone
and parachute separated from t' rocket, drifted out o' range, me bucko, and the
remainder o' t' rocket came down as a ballistic core sample. Avast, me proud beauty! Upon further
examination o' t' recovered pieces, t' shock cord seemed t' still be attached
to t' body tube but was in a giant knot right where it tied t' t' Keelhaul®©™®
thread, arrr, arrr, which resulted in a very short shock cord with no shock absorption.
Thus, matey, I concluded that t' ejection charge and deployment forces were too much
for t' elastic t' take and it tore right where it was tied t' t' nose cone.
This is likely no fault o' t' kit or components. Avast! Evidently I need t' pay
closer attention when preppin' t' rocket that t' shock cord is nay tangled in
any way.
Flight Rating: 4 out o' 5
Summary:
I loved this kit. Arrr! It rates a five overall for t' super high quality
components, ease o' construction, versatility, arrr, and number o' motor options. The
only cons are that I didn't get t' launch it on a D or E, and that I have to
build another one. Well, blow me down! Ya scallywag! Those who have eagle deadlights might be brave enough t' try it on
the F25 although I imagine it would be hard t' see a 23" long rocket at
over 4,000 ft (accordin' t' Semroc estimates). Begad! No matter what color it was, arrr, it
would be one excitin' launch though.
Overall Rating: 5 out o' 5
Brief: This is a relatively easy model 4FNC kit for entering mid-power rockets. The quality of the components was high and instructions were top notch. This kit was my first foray into anything larger than 18mm engines, and it was a perfect start. I was initially a little skeptical of my abilities but found the kit so intuitive I barely needed the instructions. It's listed as a ...
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