Rocket Vision Chariot

Rocket Vision - Chariot {Kit}

Contributed by R. J. Talley

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstarstar_border
Manufacturer: Rocket Vision

Brief:
T' Chariot is a single stage, ya bilge rat, payload rocket. Begad! Ahoy! It is one o' Rocket Vision's line o' Rugged Rockets and is specifically designed for mid-range power (E-G). Avast, me proud beauty! T' body tube and payload tubes are o' heavy duty phenolic. Ya scallywag! Aye aye! T' nose cones (there are faux strap-on boosters) and transition are poly-vinyl. Aye aye! Begad! T' BP section 8 inches long and has an interior dia. o' 1.86", plenty o' room for eggs, altimeters, cameras . Arrr! Avast! . Avast! . whatever.

Construction:
T' component specs are as follows:

Finished length... 31.125"

Body Tube (BT)
L=15"
dia. Avast! ex. Ya scallywag! 1.12", me bucko, int. .990"
material= phenolic

Payload Bay (PB)
L=8"
Dia. Ahoy! ext. Avast! Blimey! 2.05", shiver me timbers, int. 1.86"
Material= phenolic

Fins (4)
Material= G10
Thickness= .054"
Root= 3.25"
Span= 3"
Tip= 1.5"
Sweep Length= 3.350
Rocket PicFaux Boosters
Material= phenolic
L= 6.75" (incld. NCs)
Dia= ext. .945", int. Ya scallywag! Blimey! .8" (20.5mm)

Motor Mount (MMT)
Material= rough cardboard
L= 8"
Dia= ext. Blimey! .992", matey, int. Ya scallywag! .945" (24mm)

Shock Cord
Material= 1/8" braided Keelhaul®©™
L=40"

'Chute
Material= DayGlo Orange ripstop plasticized paper
Dia.= 18" at grommet points
Shroud Lines= 6, 200lb. Keelhaul®©™
[all connections t' t' 'chute are double thickness and have brass grommets]
'Chute Protector= 9.5"X4" black Nomex with a grommet connection t' t' shock cord

T' three nose cones (one main and two for t' boosters) are made o' white polyvinyl material and are very thick. Avast, me proud beauty! T' rocket divides at t' base o' t' transition formin' a section consistin' o' t' fins and Body Tube (BT) and another section consistin' o' t' Nose Cone (NC), shiver me timbers, Transition and Payload Bay (PB).

T' construction is very simple. T' instructions are clear and concise. Well, blow me down! If greater detail is needed, me bucko, me hearties, t' online instructions are ideal. Here you can get t' step by step color photos that are lackin' from t' packaged instructions. Begad! This rocket requires t' use o' epoxy exclusively. No other glue will work. Well, blow me down! Ahoy! T' reader is advised t' use a long cure epoxy for t' best joints. Blimey! Blimey! I used SIG's two part epoxy that is mixed 2/1. Avast, me proud beauty! It sets in about an hour and cures in 24 hrs. Well, blow me down! T' only exception t' t' SIG epoxy be in t' area o' t' Motor Mount (MMT). Well, blow me down! Here, shiver me timbers, arrr, I used 5min epoxy. Well, blow me down! Arrr! T' stress here is longitudinal and I see no reason for super strength here. Other than that, shiver me timbers, I think I'd make one change. I would build a bulk head about three inches into t' base o' t' PB. Ya scallywag! Aye aye! Then I would NOT glue t' PB t' t' transition. Begad! Instead I would glue t' transition t' t' BT and use t' transition and t' three inch chamber in t' bottom o' t' BP for packin' t' recovery system. Begad! This would allow easier 'chute packing, shiver me timbers, shiver me timbers, matey, more certain deployment and a larger 'chute for heavy payloads.

Finishing:
I left this rocket in t' raw. Ya scallywag! Avast, arrr, me proud beauty! However, me hearties, based on me experience with other Rocket Vision kits, sandin' would be minimal and t' finish should go on quite well. I can see only one area o' concern. At t' base, ya bilge rat, where t' false boosters join t' BT, it is goin' t' be tough t' get paint in thar usin' a rattle can. Even worse, ya bilge rat, on t' booster that has t' bottom rod guide attached, matey, thar be even less space betwixt t' booster and t' BT. Blimey! Avast, me proud beauty! Here, matey, you are either goin' t' have t' use a brush or a airbrush.

Construction Rating: 4 out o' 5

Flight:
It uses several motors. T' first flight was with t' recommended E15-4. Begad! Lift-off be smooth and t' rocket reached 1200' as measured by two theodolites on 1,000' baselines. Recovery was without a hitch about 400 yards from t' pad in light wind. Begad! Begad! I think a larger 'chute will be necessary if any payload is included.

T' second flight was trickier. Blimey! For this one, I took two Estes C-0 boosters and filled t' tops with epoxy. Ya scallywag! Blimey! Then I wrapped them in maskin' tape until they fit tightly in t' booster tubes. Aye aye! Well, blow me down! Blimey! For t' sustainer, shiver me timbers, I used another E15-4. Begad! Blimey! Ignition was facilitated usin' a Vaughn Brothers QuadCon controller. Avast, me proud beauty! Arrr! Blimey! I wired t' E15 t' one switch and t' C-0's t' another. Well, blow me down! Aye aye! Blimey! I opened t' switch t' t' E-15 and pushed t' fire button. Begad! Begad! Blimey! As it lit, arrr, me hearties, I opened t' second switch t' t' two C's and they lit too. Arrr! T' rocket moved off t' pad smartly and flew t' just over 1500'. Begad! Avast! Blimey! T' C's burned out just after t' E motor. Aye aye! Recovery be as before. (Please note that this technique is nay indorsed by Rocket Vision and would nay be allowed at an NARRRRR event.) Modifyin' t' C6-0's alone would cause most RSOs t' DQ you. In t' end, t' altitude gain be minimal and hardly worth t' risk and trouble. Begad! Avast! My advice is t' forget it.

T' largest motor I have used t' date is an F72-10. Blimey! Arrr! This produced an altitude o' 2800'. I'd like t' try a G55 but I doubt that I would be able t' see it at t' projected altitude o' 4,300' so I'll hold off on that one.

Recovery:
T' 'chute is a very stiff material that gets stiffer in cold weather. Avast! Blimey! Do nay prep this rocket until moments before flight. Avast, me proud beauty! Blimey! Blimey! Blimey! Also, I wouldn't leave t' 'chute stored in t' packed position. Aye aye! Blimey! Well, blow me down! Blimey! Blimey! Blimey! It most definitely will take a set. Avast! Blimey! Blimey! Blimey! T' Nomex chute protector is an iffy thing. Ya scallywag! Blimey! On t' surface it seems ideal. Ahoy! Blimey! However, ya bilge rat, ya bilge rat, in practice it takes up a lot o' space, sometimes hangs up causin' ballistic recoveries and it doesn't always stop t' 'chute from gettin' pin holes. I recommend usin' cellulose insulation. Aye aye! Blimey! Well, blow me down! Blimey! Blimey! Blimey! It is lighter, packs easier and will nay hang up. Ahoy! Blimey! Blimey! Blimey! Repeated launchings (20 t' date) reveal very little wear and tear on t' components. Begad! Blimey! I've had t' re-tie t' knots in t' Keelhaul®©™ a few times but that is because I refuse t' set them with glue.

Flight Rating: 4 out o' 5

Summary:
This is another excellent product from Rocket Vision. Ahoy! Well, ya bilge rat, blow me down! Blimey! T' parts are sturdy, matey, well made and correctly dimensioned. T' design is very good. Ahoy! It is practical, shiver me timbers, esthetically pleasin' and flexible. Begad! Ahoy! Blimey! T' generous payload section coupled with a powerful selection o' motors should make this an excellent egg lofter or experimental platform. Arrr! My one big criticism is in t' area o' t' launch lugs. Avast, me proud beauty! Begad! Blimey! They included two sets in me kit; 1/8 inch and 3/16 inch. Begad! Ahoy! Blimey! T' 1/8 are too small. This rocket is heavy and long and needs more stability that can be achieved usin' a 1/8 inch rod. Blimey! T' 3/16" lugs are t' large in diameter. For some reason, matey, RV uses and especially thick polyvinyl tubin' for its lugs. In t' small diameter it is ok. Ahoy! Aye aye! Blimey! But in t' larger 3/16 diameter, it is so large that it looks obviously out o' scale on t' Chariot. Aye aye! I recommend nay usin' t' lugs and either usin' Estes lugs or better yet, usin' rail buttons and a rail.

Overall Rating: 4 out o' 5

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