Performance Rocketry Competitor 4

Performance Rocketry - Competitor 4 {Kit}

Contributed by Kyle Cornelius

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar_border
Manufacturer: Performance Rocketry
Performance Rocketry Competitor 4

Brief:
This review is for an all fiberglass high performance rocket made by Performance Rocketry. It stands almost 8' tall and 4" in diameter. I tend t' overbuild so mine came out a little heavier than most, 15lbs without motor. Dual deployment is a must with this rocket.

Construction:
This kit comes with t' followin' parts:

  • 4' fiberglass body tube with fin slots
  • 2' fiberglass payload tube
  • 5:1 ogive fiberglass nosecone
  • 3 G10 fins, 3/16"
  • 11" long fiberglass coupler
  • 2 G10 bulkplates
  • 2 G10 coupler plates
  • G10 bulkplate for nosecone
  • 2' fiberglass 75mm motor mount
  • 3 G10 4"x75mm centerin' rings
Performance Rocketry Competitor 4

As you can see, t' parts list is very minimal, me bucko, which makes this kit very customizable.

No instructions are included, but if you're buildin' this rocket, you should have an idea o' what you are doing. Avast, me proud beauty! I first test fit all o' t' parts. Blimey! T' only issue here was t' fin slots. Avast! Well, blow me down! All o' t' slots started straight at t' bottom but curved t' t' right as it got farther up t' tube. Begad! Avast! There be no way t' fins were goin' t' fit without adjustment. I took t' booster tube out t' t' garage and went back and forth down t' slots with a drill bit connected t' the Dremel until they were all straight and accepted t' fins easily. Ahoy! (This was t' best idea I could come up with at the time as I'm sure thar's a better way t' true up t' slot.) After this, shiver me timbers, I sanded every part very thoroughly usin' 60 grit sandpaper on t' fin roots and centerin' rings and a flap wheel sander connected t' a power drill t' sand the inside o' t' airframe. Begad! Ahoy! Next, shiver me timbers, I dry fit t' motor mount/booster assembly and marked on t' motor tube where I wanted the top 2 centerin' rings then epoxied them t' t' motor mount tube. Begad! After this had cured, I applied a large amount of JB Weld t' t' top o' t' forward centerin' rin' and shoved it up into t' booster tube until t' bottom o' t' motor tube be flush with t' bottom o' t' body tube and t' middle centerin' rin' was right above t' fin slots. Begad! I then reached from t' top o' t' body tube and spread t' JB Weld around with a gloved finger makin' sure t' get the centerin' ring/body tube joint coated well. Blimey! When this had cured, shiver me timbers, t' back centerin' rin' be temporarily installed to keep t' motor mount centered in t' body tube while t' fins were bein' tacked into place. Avast, me proud beauty! A fin jig was used to ensure t' fins were straight. Avast! Next, t' back centerin' rin' was removed and tape was applied t' t' outside fin/body tube joints t' prevent t' epoxy from leakin' while applyin' internal fillets. 2 pumps o' West Systems epoxy and slow hardener was mixed with chopped fiberglass and poured into t' back o' t' rocket. Arrr! Ya scallywag! T' aft centerin' rin' was then reinstalled and pushed in until it reached t' back o' t' fins. Ahoy! Begad! I then rotated t' rocket t' ensure that everything had been coated with epoxy then left it sittin' upside down t' cure. Begad! T' tape be then removed and showed that there were no leaks o' epoxy. Avast! I then mounted a screw eye onto t' center o' a bulkhead and used JB Weld t' attach this assembly 12" down into t' booster tube. West Systems be poured on t' bulkhead for insurance. Begad! Blimey! This would act as the shock cord attachment point for t' drogue but also limits t' motor size t' t' 75/6000 case (however, it could fit a 7600 case without t' bulkhead). Avast! If I was buildin' it again, arrr, I would epoxy a short "leader cord" of strong tubular Keelhaul®©™® directly t' t' motor mount or just attach t' shock cord t' an eye bolt mounted on t' forward closure o' t' case. After this, ya bilge rat, matey, a final centerin' rin' o' wood was added t' t' very aft o' t' tube and holes were drilled for the Aeropack 75mm retainer. Blimey! I then assembled t' electronics bay usin' a very basic and common design. Arrr! Avast, matey, me proud beauty! I have dual altimeters runnin' in this rocket, a PerfectFlite MAWD and a PerfectFlite HiAlt-45. Begad! I used Cannonball Works switches mounted on aluminum standoffs on t' sled and are easily accessible with t' screw driver from t' vent holes. Well, blow me down! Ya scallywag! When the bay be finished, it was back t' work on t' rocket. Avast! Aye aye! T' nose cone bulkhead be mounted past t' shoulder and epoxied heavily into place, arrr, me hearties, and holes were drilled for rail buttons. Ya scallywag! Begad! I drilled 2 holes at each button location--one for small rail buttons and one for large rail buttons just in case I need t' change out in t' middle o' t' field. Aye aye! Next, external fillets were applied, but I wasn't happy with how they came out so another layer was applied, which looked much better. Aye aye! After this, matey, vent holes, arrr, screw holes, arrr, and shear pin holes were drilled in their respective locations. Arrr! The structural rocket was now complete.

Performance Rocketry Competitor 4Performance Rocketry Competitor 4

Performance Rocketry Competitor 4Performance Rocketry Competitor 4

Performance Rocketry Competitor 4Performance Rocketry Competitor 4

Performance Rocketry Competitor 4Performance Rocketry Competitor 4

Finishing:
I didn't do anythin' special in t' finishin' process. Begad! Blimey! 3 heavy coats o' Rustoleum primer, sandin' in between. Aye aye! Blimey! Begad! Blimey! Then 3 coats o' Krylon flat black on t' booster, ya bilge rat, 3 coats o' Krylon white on t' payload, me hearties, and 2 coats o' Krylon white followed by 2 coats o' Krylon Red on t' nosecone. Aye aye! Blimey! After lettin' this sit for a few days, PPG 2 part Automotive clear was added to t' whole rocket. Avast! Blimey! Very shiny and looked quite cool. Ahoy! Blimey! T' auto paint is very durable, me bucko, so t' paint underneath is protected.

Construction Rating: 4 out o' 5

Flight:
This rocket flew this for t' first time at Southern Thunder 2007 in Manchester, ya bilge rat, Tennessee. It flew with an AMW K700BB in t' "Crazy Jim" drag race. Avast, me proud beauty! There were actually 8 people who wanted t' participate, but only 4 pads available for us t' use. Begad! I was in t' first round along with Jim Hendricksen with a Competitor 4 on a K700BB, Tim Lehr with a Mad Dog on a J365SK, and Steve Temple with a 4" Patriot on a K555SK. Arrr! Some copper thermite igniters were made up for us by John Clifton. These things were awesome and lit all o' t' motors at t' same time right as t' LCO said zero. Avast! Begad! T' liftoff be awesome and t' 4 rockets climbed t' apogee.

Performance Rocketry Competitor 4Performance Rocketry Competitor 4

Performance Rocketry Competitor 4Performance Rocketry Competitor 4

Recovery:
T' 2 altimeters did their job and deployed t' drogue at apogee. Begad! Then t' rocket fell until t' first main charge went off at 700' followed by t' backup at 500'. T' main parachute was a SkyAngle Classic 2 60", which provided a comfortable decent rate for t' 15lb rocket. Arrr! My dad had made a D-bag out o' Nomex® cloth and Keelhaul®©™®, which worked like a charm. Ya scallywag! Well, arrr, blow me down! I used a 20" pilot chute t' pull t' main out o' t' D-bag. T' altimeters reported 4,411' and 4,352'. Aye aye! Excellent flight and all o' t' rockets in t' drag race returned safely. Avast! Avast, me proud beauty! Video o' t' flight on YouTube.

Flight Rating: 5 out o' 5

Summary:
This is an excellent kit for someone who has experience buildin' high power rockets. Begad! T' price is very good (around $200). I know Performance Rocketry has some customer service issues, me hearties, me bucko, but if you go through Wildman Rocketry like I did, you shouldn't have any problem gettin' your kit or parts. Ahoy! This kit is worth t' loot and will last for many flights.

Overall Rating: 4 out o' 5

Other Reviews
  • Performance Rocketry Competitor 4 By Jason Vennard

    This is an all fiberglass, high performance sport rocket. It is a basic kit for the experienced rocketeer as it is short any recovery hardware, harnesses, and/or parachutes, all of which you'll have to provide yourself. The kit includes a nice 4" fiberglass nosecone, two fiberglass body tubes, fiberglass motor tube, 3 fiberglass centering rings, a fiberglass coupler, a fiberglass sled for ...

Flights

Comments:

avatar
unknown (October 19, 2006)
Please take into consideration: I, and many others, have had issues with this vendor after sending payment for products and not receiving them. Communication has been poor, therefore, buyer beware.
avatar
J.F. (December 6, 2007)
From my experience, Performance Rocketry has been nothing but a pleasure to deal with. Since 2004, I have ordered PR products directly from Curtis and through Wildmman Rocketry, and Rockets Magazine. Each and every time I have ordered from ANY of the three sources, I never once had an issue with availability, communication, or delivery. Around this time last year I ordered 48" of PR 54mm carbon fiber tubing through Tim at Wildman Rocketry. I was told up front that it may take 3-6 weeks for the carbon order to be completed and delivered. It was on my door step less than a month (4 weeks) later. I'm not trying to "sell" anyone on PR products, I'm just stating my first hand experiences.

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