manuals.online logo
Brands
  1. Home
  2. •
  3. Brands
  4. •
  5. Madcow Rocketry
  6. •
  7. Toy
  8. •
  9. Madcow Rocketry mini DX3 User manual

Madcow Rocketry mini DX3 User manual

Specications:
Length: 36.5”
Diameter 1.6”
Weight: 9.5oz
Recovery: 18” Nylon Chute
Motor Mount: 29mm
Fins: 3 - 1/8” Plywood
CP: 27” from nose tip
CG: 25.4” from nose tip
Recommended Motors:
Single Use Reloadable
D12-5* 340’ E16W-7 1000’
E9-6 * 675’ E23T-6 940’
F20W-7 1980’ F52T-8 2210’
F23J-7 1684’ G64W-10 3323’
G79W-10 3057’ 51F36-9 (BS) 1696’
*Requires 29/24 adaptor 57F59-9 (WT) 1859’
93G80-9 (SK) 2817’
Parts List
1. (1) Nose cone
2. (1) Aft body tube
3. (1) Forward body tube
4. (1) Coupler
5. (1) Bulkplate
6. (1) Eyebolt, nut and washer
7. (2) Centering rings
8. (1) 29mm motor tube
 9. (3)laser-cutns
10. (1) Kevlar® shock cord section
11. (1) Nylon shock cord section
 12. (1)6”x6”ameproofchuteprotector
13. (1) 18” Nylon chute
14. (2) ¼” launch lugs
Required to complete: 5 minute epoxy,
120/220sandpaper,maskingtape, nishing
ller/paint.
™
K-103
mini
898666 00103 1
®
23016 Del Lago, Unit C, Laguna Hills, CA 92653
949.547.8847
www.madcowrocketry.com
©2006 MadCow Rocketry™
DX3
2 ©2015 MadCow Rocketry™ mini DX3™ Assembly mini DX3™ Assembly ©2015 MadCow Rocketry™ 3
Please make sure you read all directions and understand how to assemble your model
beforeyoustartconstruction.Itisalsoagoodideatotestteachpartbeforeassembly
–somemanufacturingtolerancesmayrequirelightsandingbeforenalassembly.
Laser cut parts will exhibit varying amounts of charring on the edges depending on the
density of the plywood. The charred edges do not interfere with bonding and do not
need to be cleaned before assembly. In most cases the charring will be cleaned up
duringsandingfornishingandpainting.
Step 1 – Motor Mount Assembly
Step 2 – Insert Motor Tube Assembly into Body Tube
Testteachofthensintotheprecutnslots.Because
plywood thickness varies, you may need to sand the slot
to the correct width. Wrap the shock chord into a small
bundle and stuff it inside the motor tube for this next step.
Testtthemotortubeassemblyintothebodytubeto
ensureasnugt.Sandthecenteringringsifnecessary.
Whenyouaresatisedwiththet,spreadsomeepoxyon
the inside of the body tube and slide the forward centering
ring of the motor assembly into the body tube. Make
sure you have the motor assembly facing the right
way! Spread some more epoxy on the inside edge of the
body tube before sliding the rear centering ring into the body tube. Continue sliding the
assemblyinsidethebodytubeuntiltheaftcenteringringsarejustclearofthenslots.
It’sagoodideatotesttanineachslotherebeforetheepoxysets.Holdthebody
tube with the motor tube assembly down until the epoxy sets. Make sure the weight of
the motor tube doesn’t cause it to slide out of alignment.
Step 3 – Fin Assembly
Using a door jam or small section of angle stock, pencil a line halfway between two of
thensthatextendsfromthefronttothebackofthebodytube.Thislinewillbeused
latertoalignthelaunchlugs.Testteachofthensintotheprecutnslots.Then
shouldseatrmlyagainstthemotortube-sandeachnorslotifnecessary.Whenyou
aresatisedwiththet,applysomeepoxytotheendofthentangthatwillcontactthe
motortube.Also,spreadathinlayerofepoxyoneachsideofthentang.Slidethen
intoplaceandcheckthealignment.Continuerecheckingthenalignmentuntilyouare
suretheepoxyhasset.Cleananyexcessepoxyfromaroundthenjoint.Repeatfor
theremainingns.Next,applyepoxylletstobothsidesofeachnbyapplyingathin
beadofepoxyatthen-bodytubejoing.Carefullysmooththeepoxylletswithyour
ngerbeforetheepoxysets.Alloweachllettosetbeforerotatingtheairframeforthe
nextllet.
Testtcenteringringsoverthemotormounttubeandsandmotortubeifnecessary.Also
testtthecenteringringsinthebodytubeandsandifnecessary.Spreadsomeepoxyon
the outside of one end of the motor tube and slide the ring (without the notch) until there
is approximately 1/2” of motor tube exposed. Make sure you clean the motor tube of any
epoxysoasnottointerferewiththentangslater.Aftertheaftringisdry,makeamark
1/2” from the other end of the motor tube. Spread some epoxy on the motor tube and
slide the forward ring until it aligns with the mark. VERY IMPORTANT: make sure there
is not any epoxy on the motor tube that would interfere with the n tangs later on.
Fin
Fin Tang
1/2” Exposed
1/2” Exposed
Forward Ring Notch
Push cord in corner and
tack with epoxy
The shock cord in this kit consists
of a shorter section of Kevlar and a
longer section of nylon cording. The
two sections should be tied together
using a single overhand, ring bend
ordoublesherman’sknot.The
Kevlar section will be attached to
the motor mount and the nylon
section will be attached to the nose
cone.
Wrap the end of the Kevlar shock
cord around the forward end of the
motor tube and tack in place with
CA.Makesurethecordlaysat
enough so it will not interfere with
the body tube when you slide the
motor tube inside. Apply some
epoxy to the cord to hold it in place.
Make sure the cord is secure
and will not come loose later with
ejection forces that will pull on the
shock cord.
Step 5 – Launch Lug
Mark the CP point along the launch lug line you made in the previous step. Make sure
you measure the CP point from the tip of the nose cone and NOT the end of the body
tube. Apply a small amount of epoxy on the launch lug line about ¾” long on the CP
mark. Press one of the launch lugs into the epoxy and ensure that it is aligned with the
launch lug line previously drawn on the body tube. You can site down the tube and look
through the launch lug to make sure it is straight. Similarly epoxy the second launch
lugabout2”fromtheaftendofthebodytube(alignedwiththeaftendofthens).Site
down both launch lugs and make sure they are both aligned. If you have a ¼” launch
rod, you can use this to ensure that both lugs are aligned properly.
Ensureringsareclearofthenslots
Step 4 – Forward Section Assembly
Insert the eyebolt through the hole in the center of the bulkhead and secure using the
washer and nut. IMPORTANT: Apply some epoxy to the nut and eyebolt threads
to ensure the nut doesn’t come loose later. Apply some epoxy to the inside of the
coupler and push the bulkhead in so there is about a 1/8” to ¼” of coupler exposed.
Aftertheepoxyhasset,applyalletofepoxyaroundtheinsideedgeofthecoupler
bulkhead joint.
Next mark the coupler 2” from the forward edge. Apply some epoxy to the inside of the
forward body tube section and slide the coupler up to the mark. There should be 2”
of coupler exposed. Make sure the coupler is straight and the body tubes are aligned
properly when they are assembled later.
Step 6 – Balancing Your Model
Assembleyourmodelandinsertthelargestmotoryouintendtoy(orsimulatethe
weight with a substitute) and ensure that the CG is at least 1 body diameter in front of the
estimatedCPpointspeciedontherstpage.TheCPpointismeasuredfromthetipof
IMPORTANT: always use positive motor retention to secure the
motor. Failure to use motor retention will cause the motor to be
ejected instead of the parachute making for a dangerous ballistic
reentry.
IMPORTANT: always remember to check your balance point and
ensure your CG is forward of the specied CG point.
IMPORTANT: Always follow the NAR safety code and remember
that rockets are not toys and can be dangerous if not prepared
and used properly. If you are a beginner, it is a good idea to y
with a club or other group of experienced rocketeers until you
have gained some experience.
IMPORTANT: In no event shall Madcow Rocketry be liable for
any direct, indirect, punitive, incidental, special consequential
damages whatsoever arising out of or connected with the use or
misuse of it’s products. The buyer assumes all risk and liability
resulting from ANY use of any and all products sold by Madcow
Rocketry. Your purchase and use of any Madcow Rocketry
product constitutes your agreement to and acceptance of these
terms. If you do not agree to these terms and conditions, you
must return the unused product in resalable condition for a
refund or credit.
IMPORTANT: Please contact us via phone or email if you have any
questions about constructing or ying your model.
23016 Del Lago, Unit C
Laguna Hills, CA 92637
949.547.8847
www.madcowrocketry.com
©2014 MadCow Rocketry™
®
Step 7 – Flying Your Model
Attach the parachute to the shock cord 2/3 of the way between the payload section
and aft body tube. You can also attach the chute protector to the shock cord near the
parachute. When packing your chute, wrap the chute protector around the chute with
the opening in the chute protector facing forward. Always make sure your chute is well
protected as the hot ejection motor gasses will melt the nylon chute.
the nose cone. If the CG is behind the desired point, add weight inside the nose cone by
pouringleadshotintothenoseconetipandaddingsomeepoxy.Whenyouaresatised
with the balance, epoxy the nose cone into the forward section of the forward tube.

Other Madcow Rocketry Toy manuals

Madcow Rocketry PIRANHA User manual

Madcow Rocketry

Madcow Rocketry PIRANHA User manual

Madcow Rocketry Tomach Fiberglass Mini Dual Deploy User manual

Madcow Rocketry

Madcow Rocketry Tomach Fiberglass Mini Dual Deploy User manual

Madcow Rocketry FG Frenzy User manual

Madcow Rocketry

Madcow Rocketry FG Frenzy User manual

Madcow Rocketry FG Mini BB2 User manual

Madcow Rocketry

Madcow Rocketry FG Mini BB2 User manual

Madcow Rocketry PAC-3 User manual

Madcow Rocketry

Madcow Rocketry PAC-3 User manual

Madcow Rocketry mini Black Brant II User manual

Madcow Rocketry

Madcow Rocketry mini Black Brant II User manual

Madcow Rocketry mini Squat User manual

Madcow Rocketry

Madcow Rocketry mini Squat User manual

Madcow Rocketry AGM-33 Pike User manual

Madcow Rocketry

Madcow Rocketry AGM-33 Pike User manual

Madcow Rocketry Batray User manual

Madcow Rocketry

Madcow Rocketry Batray User manual

Madcow Rocketry mini dual deploy DX3 User manual

Madcow Rocketry

Madcow Rocketry mini dual deploy DX3 User manual

Madcow Rocketry MIM-23A Hawk User manual

Madcow Rocketry

Madcow Rocketry MIM-23A Hawk User manual

Madcow Rocketry Cricket User manual

Madcow Rocketry

Madcow Rocketry Cricket User manual

Madcow Rocketry AGM 33 PIKE User manual

Madcow Rocketry

Madcow Rocketry AGM 33 PIKE User manual

Madcow Rocketry Mini Dual Deploy Screech User manual

Madcow Rocketry

Madcow Rocketry Mini Dual Deploy Screech User manual

Madcow Rocketry Discovery User manual

Madcow Rocketry

Madcow Rocketry Discovery User manual

Madcow Rocketry ARCAS HV User manual

Madcow Rocketry

Madcow Rocketry ARCAS HV User manual

Madcow Rocketry MOZZIE User manual

Madcow Rocketry

Madcow Rocketry MOZZIE User manual

Madcow Rocketry Mantis User manual

Madcow Rocketry

Madcow Rocketry Mantis User manual

Madcow Rocketry mini Tomach User manual

Madcow Rocketry

Madcow Rocketry mini Tomach User manual

Madcow Rocketry Tomach FIBERGLASS KIT User manual

Madcow Rocketry

Madcow Rocketry Tomach FIBERGLASS KIT User manual

Madcow Rocketry Mini Bomarc User manual

Madcow Rocketry

Madcow Rocketry Mini Bomarc User manual

Madcow Rocketry mini Frenzy User manual

Madcow Rocketry

Madcow Rocketry mini Frenzy User manual

Madcow Rocketry 'lil Squat User manual

Madcow Rocketry

Madcow Rocketry 'lil Squat User manual

Madcow Rocketry mini AGM 33 PIKE FIBERGLASS KIT User manual

Madcow Rocketry

Madcow Rocketry mini AGM 33 PIKE FIBERGLASS KIT User manual

Popular Toy manuals by other brands

marklin 39540 user manual

marklin

marklin 39540 user manual

AeroWorks YAK 54 ARF-QB Assembly manual

AeroWorks

AeroWorks YAK 54 ARF-QB Assembly manual

REVELL Bussing 8000 S13 Assembly manual

REVELL

REVELL Bussing 8000 S13 Assembly manual

Eduard Defender 110 Hardtop quick start guide

Eduard

Eduard Defender 110 Hardtop quick start guide

MD Helicopters 500 Flight manual

MD Helicopters

MD Helicopters 500 Flight manual

Fisher-Price 74068 instructions

Fisher-Price

Fisher-Price 74068 instructions

Carrera 30353 Assembly And Instructions

Carrera

Carrera 30353 Assembly And Instructions

Black Horse Model Blade BH 70 Instruction manual book

Black Horse Model

Black Horse Model Blade BH 70 Instruction manual book

REVELL Me 262 A-1A Assembly manual

REVELL

REVELL Me 262 A-1A Assembly manual

LGB 20570 instruction manual

LGB

LGB 20570 instruction manual

Horizon Hobby UMX Citation Longitude 30mm EDF Twin instruction manual

Horizon Hobby

Horizon Hobby UMX Citation Longitude 30mm EDF Twin instruction manual

Trix Minitrix BR 41 operating instructions

Trix

Trix Minitrix BR 41 operating instructions

Tamiya 35071 manual

Tamiya

Tamiya 35071 manual

Eduard DGzRS H. Marwede 1/72 manual

Eduard

Eduard DGzRS H. Marwede 1/72 manual

Trix 22599 manual

Trix

Trix 22599 manual

Horizon Hobby UMX Whipit instruction manual

Horizon Hobby

Horizon Hobby UMX Whipit instruction manual

Hasbro G.I.Joe Storm Eagle ATF instructions

Hasbro

Hasbro G.I.Joe Storm Eagle ATF instructions

Gym Dandy BTT Assembly manual / owner's manual

Gym Dandy

Gym Dandy BTT Assembly manual / owner's manual

manuals.online logo
manuals.online logoBrands
  • About & Mission
  • Contact us
  • Privacy Policy
  • Terms and Conditions

Copyright 2025 Manuals.Online. All Rights Reserved.