Public Missiles Phantom / X-Caliber

Public Missiles - X-Caliber {Kit}

Contributed by Nick Esselman

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstarstar_border
Diameter: 2.10 inches
Length: 46.00 inches
Manufacturer: Public Missiles
Style: Sport

BRIEF:

I first saw t' Public Missiles Phantom in a little brochure sent t' me home. Ahoy! It was a new release for fall o' 1998 and I really liked t' looks o' t' kit. It is me second PML kit, with me first bein' t' Callisto which be me Level I certification rocket.

CONSTRUCTION:

[Phantom Pic]There are many things t' t' Callisto and t' Phantom have in common, ya bilge rat, includin' t' 2.1" diameter, matey, me hearties, shiver me timbers, pre-slotted, arrr, PML phenolic airframe, me bucko, matey, plastic nose cone, piston recovery system and approximate height o' 46". Begad! Well, blow me down! However, ya bilge rat, t' Phantom carries a 38mm motor mount, a 12" payload section, arrr, a larger parachute and a unique 6-fin design. Avast! T' average finished weight is 26 ounces accordin' t' t' instructions, shiver me timbers, however PML's webpage says 32 ounces. Ya scallywag! Blimey! My finished model weighed 29 ounces . Blimey! Aye aye! . Ya scallywag! Avast! . and then 31 ounces. Well, blow me down! Avast, me hearties, me proud beauty! PML indicated t' instructions were nay correct.

T' instructions were clear with illustrations t' help ensure a successful build. Begad! You will need 5 minute and 15 minute epoxy and sand paper t' rough up t' parts before gluing. Arrr! This be noted in t' instructions.

T' Phantom uses a 9.5" motor tube t' which 4" o' t' piston strap (1" nylon rated t' 4000 lbs) is glued to. Ahoy! Avast! T' 1/4" plywood, me bucko, upper centerin' rin' was pre-slotted t' allow clearance o' t' piston strap. Arrr! T' piston strap is then connected t' t' piston "D" ring, me hearties, which is attached t' t' 108" long, 3/4" wide elastic shock cord, which in turn is connected t' t' payload bulkhead.

All t' parts were cut precisely and fit very well. Avast, arrr, me proud beauty! T' six fins are PML's G-10 fiberglass which are passed through t' slotted airframe and glued against t' motor tube. Just be sure t' look closely at t' fins t' ensure t' correct orientation. Blimey! This is especially true on t' smaller fins (4 o' them) since t' leadin' edge is 3½ and t' trailin' edge is 2¾.

T' kit uses a 30" PML's Dura-Chute parachute, me hearties, which is high quality rip-stop nylon with a spill hole. Ya scallywag! There are also two brass 1/4" launch lugs.

[Fins and paint job]For finishin' I wanted somethin' really different. I started with Elmers' Wood Filler t' fill t' spirals, then several good coats o' Plasti-Kote primer. Avast, me proud beauty! Aye aye! I then chose a crackle paint kit from a local craft store and went t' town. Begad! T' kit included a gold base with a black crackle top coating. Aye aye! Ahoy! I then hit t' whole thin' with a clear coat. Aye aye! It turned out really nice in me opinion. Avast! Ya scallywag!

I contacted a color coordinator (my wife) t' determine if t' red, white and black Phantom decals looked good with me paint job. Blimey! Well, blow me down! It was determined that it took away from t' effect and therefore they were nay used. Ya scallywag! However, ya bilge rat, t' decals are peel & stick type and thar are two Phantom, shiver me timbers, some strips and other enhancers along with a couple o' "Cert: Level 1" and some center o' pressure symbols. Actually a very nice collection o' decals.

I built a 38mm t' 29mm motor adaptor since I do nay currently have a 38mm motor system. Avast, me proud beauty! I should have purchased PML's Kwik-Switch system, arrr, but I didn't. I build a motor retention system and mounted t' 29mm adaptor t' t' 38mm motor mount.

Overall, shiver me timbers, for CONSTRUCTION I would rate this kit 4.5 points. Straight forward and relatively easy t' assemble. With t' 38mm mount thar be very little room on t' centerin' rin' t' put motor retention hardware.

FLIGHT/RECOVERY:

At NOVAAR's first sport launch o' 1999, ya bilge rat, I readied me Aerotech RMS - 29/40-120 Reloadable Motor System. Avast! I prepped an F52-5 and was enjoyin' all t' nice comments about t' Phantom's looks. Ya scallywag! I friction fit t' nose cone t' ensure nay losin' it (the instructions have you drill an 1/8" vent hole t' equalize pressure in t' payload section). Avast, me proud beauty! I popped t' payload section off, arrr, shiver me timbers, checked and refolded t' parachute, me hearties, put in a piece o' waddin' into t' motor mount then loaded t' motor.

T' launch be stable and straight. Very smooth as it reached apogee, me hearties, leaned over and started back toward t' ground. It never ejected and upon impact looked as though it exploded as t' phenolic shattered into pieces. What happened?

T' motor's ejection charge went off and it looked as if t' piston never moved (hard t' say after an impact but t' piston was still in t' unshattered portion o' t' rocket). Blimey! Here is what I think:

[Phantom with new tube]I'm nay goin' t' bad-mouth PML's piston system as I have seen others do because I have 6 flights on me Callisto and never a problem. Avast, me proud beauty! I think I made two mistakes. Arrr! First, I built t' rocket in t' winter time and checked t' piston movement then and it was good with no sanding. Ahoy! It be warmer on launch day AND second, I never pulled t' piston out upon preparation. Arrr! I only refolded t' parachute.

Amazingly t' nose cone, arrr, once retrieved from bein' completely embedded into t' ground, me bucko, was nay damaged in any way. Blimey! T' entire fin section is also in good shape which I attribute t' t' use o' phenolic (brittle) tubing. I personally think from havin' this experience with paper that t' shock o' t' impact would have damaged t' fin section worse if it wasn't phenolic. Begad! I think that as t' phenolic shatters t' energy is better absorbed. Avast, me proud beauty! Therefore, arrr, she is goin' t' fly again, with t' piston system.

REPAIRS:

Repairin' t' Phantom was so easy. Arrr! I simply cut off t' ragged edge o' tubin' above t' fins, shiver me timbers, measured a cut a new body tube and put it all together. Avast! Ya scallywag! Upon t' rebuild I didn't make a new payload section, I simply made t' rocket t' same length without it. Aye aye! Also since t' shock cord was still attached t' t' motor mount, ya bilge rat, I had t' split a coupler lengthwise t' use betwixt t' old fin section and new body tube.

FLIGHT/RECOVERY (again):

[Phantom Launch]This time t' Phantom was loaded up with a F52-5T. Begad! Begad! Launch be perfectly straight without t' slightest oscillation. Begad! Begad! Reached apogee, then about 1 second later t' nose cone separated. Avast! Ahoy! Where's t' 'chute? Where's t' 'chute? T' parachute never came out and t' rocket landed hard horizontally on t' ground. Ya scallywag! Ya scallywag! Some chipped paint and a small crack o' one fin fillet.

Well, this just would nay do, so I loaded it up with a G80-7. Begad! Pow off t' pad with t' big flame o' a G80! Up and up, matey, shiver me timbers, arc, ya bilge rat, deployment . . . Arrr! full deployment this time. Avast, me proud beauty! T' Phantom uses a 30" 'chute and it descended fairly rapidly and hit fairly hard. Avast, me proud beauty! No damage.

Let's see that again. Blimey! Ahoy! Loaded another G80-7. Aye aye! Pow! Off she went. Aye aye! This time it be about a second after apogee and again full deployment and successful (although rapid) recovery. Begad! I think this bird could use a bit larger parachute.

So after thinkin' about this, I have concluded that either t' Phantom be lettin' me know it wanted more power or I may have been nay puttin' enough ejection charge powder. Ya scallywag! I will fly here again on me RMS casing, but this time usin' t' full charge.

For FLIGHT/RECOVERY, arrr, I would rate this kit 4 points. Ahoy! Avast! Each launch produced a very straight flight. These are t' ones that really make t' modeler feel proud o' t' construction. Ya scallywag! Descent it really quite fast and that's from a guy that would rather have a faster descent than not. Avast! T' ejection issues are nay deductin' any points here since I believe they were me fault.

Overall, t' Phantom is a sharp lookin' rocket with t' 6 fins makin' it unique. Blimey! Avast! Ease o' construction and super straight flights make this a very nice rocket for your Level I certification or just gettin' into HPR. Avast! I would suggest gettin' or buildin' a 29/38mm adaptor t' get yourself more motor versatility. Blimey! I give t' kit an OVERALL ratin' o' 4.5 points.

Other Reviews
  • Public Missiles Phantom / X-Caliber By Joseph G. Fischer

    Brief Single stage high-power model rocket with a 30" parachute recovery. Construction The PML Phantom was my first HP rocket. Construction was straight-forward with through-the-wall fins. The instruction sheet, although very brief, was concise and clear. The Phantom is a six-finned rocket. On my kit, one of the slots on the body tube was slightly off about 0.1" so the ...

Flights

Comments:

avatar
R.J. (February 1, 2000)
I love this rocket. I've launched my Phantom over 25 times with success on every flight. I never liked the piston system and never used it. My favorite motor is a G80-7 fast white these are from Aerotech and are a special order. I can load and launch this kit with ease. Last launch I was at Geneseo, NY and launched it with a H97 perfect flight to 2,213 feet! I like the smaller chute as it recovers closer and the kit is "beefy" enough to take a harder landing.
avatar
A.D.W. of PML (January 1, 2001)
One minor comment about this review (2nd one). The photos show that the user built the rocket with the two large fins mounted wrong. They are to be mounted like the four smaller fins, with an angle to both the leading and trailing edges. Said another way, what is the leading edge in the photo should have been the root chord. Not a problem, but wanted viewers to know that this particular Phantom looks different from what PML recommends in the build.

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