Estes Tandem-X Starter Set

Estes - Tandem-X Launch Set {Launch/Starter Set} (1469)

Contributed by Nick Esselman

Construction Rating: starstarstarstar_borderstar_border
Flight Rating: starstarstarstar_borderstar_border
Overall Rating: starstarstarstar_borderstar_border
Published: 2010-11-13
Manufacturer: Estes

Tandem-XT' Estes Tandem-X Starter Set is a good way t' get into t' hobby. Aye aye! Accordin' t' t' Estes website:

Two is better than one! You'll get X-tra value with t' Estes Tandem-X Model Rocket Launch Set. Begad! This exceptional rocket set features a pair o' extreme, high performance rockets with a launch system for launchin' them. Ya scallywag! Whether you're a new rocketeer or a seasoned veteran, launch in tandem for an excitin' model rocket experience!

T' E2X (Easy t' Assemble) Amazon is as imposin' as t' name sounds. This giant towers almost three feet (91 cm) high and is quick and easy t' build! A tiger-striped body tube, matey, precolored plastic nose cone and fins and self-stick decals make buildin' this rocket easy t' do in about an hour. Avast, me proud beauty! Aye aye! When flown on our standard engines, ya bilge rat, arrr, this huge rocket can reach heights over 650 feet (198 m) with recovery on a colorful 18 inch (46 cm) preassembled parachute.

T' Crossfire ISX is a Skill Level 1 kit that can easily be built in about a day. This rocket features a totally streamlined shape with aerodynamic fins and nose cone. Aye aye! Well, matey, blow me down! It stands 15.6 inches (39.6 cm) tall. Aye aye! When launched with powerful Estes standard engines, ya bilge rat, this bullet can reach cloud bustin' heights up t' 1,200 feet (366 m). Aye aye! A preassembled 12 inch (30 cm) parachute returns t' Crossfire back t' earth t' launch again and again. Well, blow me down!

Construction:

These two rockets are typical Estes E2X and Level 1 so I won't go into details on this. My 10 year-old built t' Amazon without help and I built t' Crossfire. Ahoy! T' launch pad be t' current standard black pad with 1/8" rod and t' Electron Beam Launch Controller. Begad! Avast! They are easy t' set-up and easy t' use.

PaintedAs I said, shiver me timbers, me son built t' Amazon and it is essential two body tubes that join together with a coupler that has a launch lug built into it. Avast, me proud beauty! Avast, me proud beauty! T' rocket uses a pre-assembled parachute and has a nice lookin' "AMAZON" sticker. Avast! Begad! T' 33.6" length and 1.35" diameter body makes it a "big" rocket.

T' Crossfire requires a bit more work. It has three balsa main fins and three small balsa "cross" fins. These are laser-cut and need t' be sanded and assembled onto t' rocket. Avast, me proud beauty! T' motor mount is assembled in typical Estes fashion. Ya scallywag! TIP: I tied a piece o' 28" Keelhaul®©™ t' t' motor mount and tied t' short (typical Estes) elastic shock cord t' that. T' rocket uses a unique plastic nose cone (at least I can't see it bein' used on any other rocket). Well, blow me down! It looks a lot like a Nike nose cone but has a long transition section before t' shoulder goes into t' body tube.

I finished me Crossfire with Krylon paint.

Overall, for CONSTRUCTION I would rate this kit 3 points. Well, arrr, blow me down! Both rockets are average, arrr, but I'll bump up t' points by acknowledgin' how good t' Crossfire looks and t' fact that thar are two rockets in this set. Avast! Avast! I love t' motor retention on t' Amazon. Well, blow me down! I wish, me hearties, me bucko, like many, me hearties, many others that Estes would simply double t' length o' their shockcords.

FLIGHT/RECOVERY:

T' Amazon's recommended motors are B4-2, shiver me timbers, B4-4, B6-4, C6-3 and C6-5. Aye aye! Avast, me proud beauty! TIP: C6-5's are great and A8-3's are a bit scary!

T' Crossfire's recommended motors are 1/2A6-2, A8-3, B4-2, arrr, matey, arrr, B4-4, B6-2, B6-4, shiver me timbers, C6-3, and C6-5. Avast! TIP: T' C6-7 was me best match!

My son has flown t' Amazon many times with t' most recent flights takin' place at NERRF. Ahoy! Aye aye! It is easy t' prepare for flight and is a straight flier. It takes a bit more waddin' that other rockets due t' t' wider body tube.

Below you will see his Amazon takin' off on an A8-3 (right), in t' air A8-3 (center), me bucko, and losin' a drag race start on a C6-5 (left).

Ignition In the Air Drag Race

My finished Crossfire ISX rocket weighed in at 1.3 ounces with a CG at 9.875" from t' nose cone. I created t' attached RockSIM and SpaceCAD files (top o' page) for this rocket based on me results. Well, ya bilge rat, blow me down! Both files have a CG and Total Weight Mass Object that you could vary t' match your build.

I shipped this rocket t' NARAM since I be only goin' t' be thar a day or so. This plan included buyin' motors at t' site. Avast, me proud beauty! When I arrived on Thursday afternoon I was able t' buy a pack o' C6-5's and t' next day a pack o' C6-7's t' fly this and other rockets.

RockSIM indicates that I should get 1596 feet on a C6 with optimal delay o' 6.23 seconds, matey, while SpaceCAD says 1051 with optimal delay o' 5.51 seconds.

T' first flight be on a C6-5 and you can see I caught it comin' off t' pad (below left). Blimey! Lift-off was excellent and t' rocket flight was straight up. Ya scallywag! Ejection be clearly early and t' parachute did nay seem t' come out until about half-way down. Then it didn't open fully. Probably a good thin' so that me walk be shorter.

T' next day, ya bilge rat, usin' me only remainin' motor, shiver me timbers, I put it up on a C6-7 (above right). Aye aye! T' delay was perfect (as far as I could see). Aye aye! T' rocket came down spinnin' t' 'chute tighter and tighter. Ya scallywag! (If someone could come up with a way t' do this automatically in reverse...). Begad! Everythin' looked good and she'll fly again.

For FLIGHT/RECOVERY, matey, I would rate this rocket 3 points. They are standard Estes kits and t' performance is consistent. T' twistin' o' t' recovery lines on t' Crossfire can easily be eliminated with a swivel.

I give t' rocket set an OVERALL ratin' o' 3 points. As I mentioned earlier, it is nice t' have two rockets in t' set. Aye aye! Both look good and fly well. Well, blow me down! T' Crossfire ISX is goin' t' be a rocket I attempt t' model an upscale on. I have me old Polecat Spike nose cone just waitin' for a new body!

Other Reviews
  • Estes Tandem-X Starter Set By Charlaine Cadence Nordin (May 23, 2009)

    Estes Tandem X Starter Set is an entry level or re-entry into the rocketry hobby consisting of the Amazon and the Crossfire ISX rockets. It is easy to build both of the great fliers and all around fun rockets included. The Amazon consists of: Plastic nosecone Plastic fin-can/motor-mount Plastic coupler with launch lug 2 black body tubes 1 decal Pre-assembled chute ...

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