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To   succeed   with   the   construction   of   a   water   rocket,   you   will   have   to   work   very   precisely   and   carefully.   Especially   some   of   the   adhesives   are   pretty   dangerous. Thus,   please   wear   gloves   when   working   with   adhesive   or   epoxy   and   don‘t   breathe   in   the   gases.   It   is   recommended   to   work   outside   whenever   toxic   gases could   develop.   The   launch   of   a   water   rocket   may   needs   permission   from   the   competent   authority,   depending   on   your   location.   You   need   the   permission   of the   landowner   if   you   launch   on   foreign   territory.   Please   wear   safety   goggles   when   pressure   testing   or   launching   your   rocket.   Keep   a   safe   distance   to   the pressurized   rocket.   We   can   not   guarantee   the   accuracy,   completeness   or   feasibility   of   any   our   tutorials.      We   are   not   responsible   for   any   damage   or   harm   on objects,   animals   or   humans.   We   do   not   guarantee   that   the   information   provided   on   this   web   site   is   complete,   accurate   and   always   current.   This   applies   also to all links cited on this website points, either directly or indirectly. We are not responsible for any damage or harm to objects or individuals.
SAFETY GUIDELINES AND DISCLAIMER
REFERENCES
Paul Grosse Website - The Copper Tube Launcher http://grosse.is-a-geek.com/paul/h2orocketlaunchercutube.htm Water Rocket Uh Lab Website - Launcher Construction in Germany:  http://waterrocket.uh-lab.de/launcher.htm Diskussion zum Copper Tube Launcher at German Raketenmodellbau-Forum http://www.raketenmodellbau.org/forum?action=viewthread&threadid=3655&page=1 USWaterRockets.com Website - How to build a cable tie style water rocket launcher http://www.uswaterrockets.com/construction_&_tutorials/cable_tie_launcher/tutorial.htm AirCommandRockets.com Website - Clark Cable Tie Launcher http://www.aircommandrockets.com/construction_9.htm Warafreak at German Raketenmodellbau-Forum - Meine neue Startrampe http://www.raketenmodellbau.org/forum?action=viewthread&threadid=801451&page=1 M1Molter, der Heimwerker on YouTube - Kupferrohr verlöten! -  aber wie? (German) https://youtu.be/0v9TqISa4DQ TheCrazyHobbyists Website - Filling System (German) https://thecrazyhobbyists.jimdo.com/wasserraketen/betankungssystem/
WHAT‘S NEXT? Take a look at our other tutorials…
bottle
The   best   plan,   the   strongest   pressure   vessel   and   the   most   reliable   parachute   system   is   completely   useless   if   the   launch fails   before   it   really   starts.   To   prevent   this,   we   want   to   show   you   in   this   tutorial   the   construction   of   a   launcher,   which   is   not only   extremely   stable,   but   is   also   able   to   fill   and   accelerate   the   rocket   sufficiently.      While   smaller   water   rockets   often   use   a launch   system   based   on   garden   hose   components,   we   want   to   show   you   the   construction   of   a   Full   Bore   Launcher   (FBL)   in this   video.   The   advantage   of   a   FBL   is   that   the   entire   bottle   opening   of   the   pressure   vessel   can   be   used   to   push   the   water out of the rocket as quickly as possible, while other systems often require smaller openings.
MAIN CONSTRUCTION
First   of   all,   let's   talk   about   the   main   construction.   In   our   case,   this   consists   of 18mm   thick   plywood .   This   thickness   is   necessary   to   withstand   the   heavy forces   during   operation.   The   components   of   the   launcher   are   a   base   plate   and three   feet   of   the   same   size.   The   feet   should   have   a   hole   on   the   underside, which   will   later   allow   it   to   secure   the   launcher   to   the   ground.    The   base   plate has   some   holes   as   well,   so   that   the   pipe   system   can   be   attached   later.   You   can download   a   detailed   technical   drawing   with   all   relevant   dimensions   of   the main   construction   as   a   PDF   file.   Next,   you   should   prime   the   construction   and then   apply   external   coating .   After   waiting   a   day,   the   feet   can   be   screwed   to the base plate.
PIPE SYSTEM
Now,   we   can   take   care   of   the   core   of   the   launch   pad   -   the   pipe   system,   which will   later   supply   the   rocket   with   compressed   air   and   water.   This   consists   of   a set   of   fittings   that   are   screwed   together.   Use   some   Teflon   tape   to   seal   the threads   well.   At   both   ends   of   the   water   and   air   supply   there   are   fittings   for garden    hose    couplings ,    so    that    hoses    can    be    connected    without    any problems.   Alternatively,   you   can   also   use   pneumatic   connectors .   On   the   side of   the   air   connection   there   is   a   non-return   valve    which   prevents   water   from entering   the   air   pump.   On   the   other   side   there   is   a   ball   valve    to   manually disconnect   the   water   filling   system.   In   the   middle   of   the   system   there   is   a   T- piece   into   which   a   short   pipe   with   a   suitable   thread   has   been   screwed   in.   The system   is   now   attached   from   below   to   the   base   plate    of   the   launcher.   We recommend using two pipe clamps  and threaded rods.
Next,    we'll    make    the    connection    between    the    rocket    and    launch    pad.    It consists   of   a   copper   tube   with   a   diameter   of   22mm.   An   adapter    is   attached to   one   end   of   the   tube   system.   On   the   other   side,   a   reduction   sleeve    from 28mm   to   22mm   is   fitted.   They   are   attached   by   soldering   them   together.   First of     all,     the     parts     are     sanded     with     a     special     cleaning     fleece      at     the corresponding   points.      Next,   you   should   apply   some   flux    to   the   soldering   area. Wear   gloves   and   do   not   to   get   in   contact   with   the   flux.   You   can   then   put   the parts   together   and   heat   them   with   a   blow   torch    or   a   gas   burner.   It   is   best   not to   heat   the   joint   directly,   but   to   keep   the   flame   at   a   nearby   point   on   the   pipe. After   the   tube   has   been   sufficiently   heated,   the   solder   can   now   be   hold   to   the joint   from   above.   If   you   have   applied   the   flux   correctly,   the   solder   runs   around the   joint   and   seals   it.   As   soon   as   a   small   drop   forms   on   the   bottom,   you   can continue   with   the   second   junction.   When   the   connector   has   cooled   down,   you can   wipe   off   the   remains   of   the   flux   and   start   placing   cable   ties   around   it.   Put a   bottle   of   the   same   type   as   you   used   on   your   rocket   into   the   reduction   sleeve. The   cable   ties   should   be   placed   directly   against   the   collar.   First   you   can   use some   tape   to   fix   the   cable   ties.   Then   pull   two   hose   clamps    around   the   cable ties    as    tightly    as    possible.    Now    the    connection    can    be    screwed    onto    the launcher. Don't forget to use Teflon tape  for that too.
cable ties
PVC pipe
reduction sleeve
O-ring seal
LAUNCH TUBE
TRIGGER
AIR AND WATER SUPPLY
To   ensure   a   stable   and   straight   launch   of   your   rocket,   we   recommend   the   use of    a    launch    tube.    This    is    basically    just    a    tube,    which    is    inserted    into    the connector   and   has   the   effect   that   the   rocket   reaches   a   higher   altitude.   We recommend   to   wrap   some   tape   around   the   launch   tube   before   inserting   it   into the   launcher.   Unfortunately,   conventional   PVC   pipes   are   often   too   weak   to withstand   the   high   forces   at   launch.   Therefore,   the   PVC   pipe   with   a   diameter of 20mm should be reinforced on the inside with a steel pipe.
Now   only   the   trigger   for   the   launch   pad   is   missing.   You   can   use   a   short   PVC pipe ,   which   you   put   over   the   connector   and   the   rocket.   As   soon   as   you   pull   the PVC   pipe   down,   the   rocket   will   launch.   To   prevent   an   unintentional   launch,   we suggest   using   multiple   cable   ties   as   a   spring.   Now   you   need   a   deflection .   We use   a   U-piece   made   of   bent   aluminum   for   this   purpose.   Two   nylon   cords   are attached   to   the   PVC   pipe.   You   can   now   attach   your   release   line    with   a   snap hook   Before   you   can   place   your   rocket   on   the   launch   pad,   you   will   need   to install   an   O-ring   seal   above   the   thread   of   your   rocket.   We   use   a   O-ring   with   a diameter   of   15.5mm    and   a   t hickness   of   2.6mm ,   but   slightly   different   sizes   should also be just as good.
The   last   thing   we   have   to   do   before   the   launcher   is   completed   is   to   take   care   of the   air   and   water   supply.   The   air   is   supplied   using   a   10-meter-long   garden   hose, which   can   be   connected   to   the   launcher   with   a   coupling.   If   you   have   installed compressed   air   valves   at   your   launcher,   use   a   compressed   air   hose   instead.   On the   other   side   of   the   hose   you   have   to   attach   a   car   tire   valve .   Sand   it,   wrap   it with   teflon   tape,   put   it   into   the   hose   and   fix   it   with   a   hose   clamp.   You   can   now connect   your   air   pump   to   this   valve   and   build   up   pressure   in   the   rocket.   The water   filling   system   is   a   bit   more   complex,   but   it   allows   a   comfortable   filling   of the   rocket.   We   use   a   pressure   sprayer   of   which   the   nozzle   is   sawn   off.   Instead, we   have   attached   a   garden   hose   to   it   using   a   hose   clamp.   To   use   your   filling system,   simply   fill   water   into   the   pressure   sprayer   and   build   up   pressure   using the   integrated   pump.   Then   open   the   valve   of   your   launch   pad   and   the   water will   flow   into   the   rocket.   It   is   important   that   you   fill   the   water   into   the   rocket before you build up pressure with the air pump.
Attachement of the pipe system
Soldering the components together
Connection with cable ties attached
Final connection
air pump pressure sprayer KUPPLUNG KUPPLUNG KUPPLUNG KUPPLUNG launcher PDF
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ADVANCED COMPONENT TUTORIALS LAUNCHER
More tutorials Advanced component tutorials
To   succeed   with   the   construction   of   a   water   rocket,   you   will   have to    work    very    precisely    and    carefully.    Especially    some    of    the adhesives   are   pretty   dangerous.   Thus,   please   wear   gloves   when working   with   adhesive   or   epoxy   and   don‘t   breathe   in   the   gases.   It is    recommended    to    work    outside    whenever    toxic    gases    could develop.    The    launch    of    a    water    rocket    may    needs    permission from   the   competent   authority,   depending   on   your   location.   You need   the   permission   of   the   landowner   if   you   launch   on   foreign territory.   Please   wear   safety   goggles   when   pressure   testing   or launching   your   rocket.   Keep   a   safe   distance   to   the   pressurized rocket.    We    can    not    guarantee    the    accuracy,    completeness    or feasibility   of   any   our   tutorials.      We   are   not   responsible   for   any damage    or    harm    on    objects,    animals    or    humans.    We    do    not guarantee    that    the    information    provided    on    this    web    site    is complete,   accurate   and   always   current.   This   applies   also   to   all links   cited   on   this   website   points,   either   directly   or   indirectly.   We are    not    responsible    for    any    damage    or    harm    to    objects    or individuals.
SAFETY GUIDELINES AND DISCLAIMER
REFERENCES
Paul Grosse Website - The Copper Tube Launcher http://grosse.is-a-geek.com/paul/h2orocketlaunchercutube.htm Water Rocket Uh Lab Website - Launcher Construction in Germany:  http://waterrocket.uh-lab.de/launcher.htm Diskussion zum Copper Tube Launcher at German Raketenmodellbau-Forum http://www.raketenmodellbau.org/forum?action=viewthread&t hreadid=3655&page=1 USWaterRockets.com Website - How to build a cable tie style water rocket launcher http://www.uswaterrockets.com/construction_&_tutorials/cable_ tie_launcher/tutorial.htm AirCommandRockets.com Website - Clark Cable Tie Launcher http://www.aircommandrockets.com/construction_9.htm Warafreak at German Raketenmodellbau-Forum - Meine neue Startrampe http://www.raketenmodellbau.org/forum?action=viewthread&t hreadid=801451&page=1 M1Molter, der Heimwerker on YouTube - Kupferrohr verlöten! -  aber wie? (German) https://youtu.be/0v9TqISa4DQ TheCrazyHobbyists Website - Filling System (German) https://thecrazyhobbyists.jimdo.com/wasserraketen/betankung ssystem/
WHAT‘S NEXT? Take a look at our other tutorials…
bottle
The   best   plan,   the   strongest   pressure   vessel   and the   most   reliable   parachute   system   is   completely useless   if   the   launch   fails   before   it   really   starts.   To prevent   this,   we   want   to   show   you   in   this   tutorial the   construction   of   a   launcher,   which   is   not   only extremely    stable,    but    is    also    able    to    fill    and accelerate    the    rocket    sufficiently.        While    smaller water   rockets   often   use   a   launch   system   based   on garden   hose   components,   we   want   to   show   you the   construction   of   a   Full   Bore   Launcher   (FBL)   in this   video.   The   advantage   of   a   FBL   is   that   the   entire bottle   opening   of   the   pressure   vessel   can   be   used to   push   the   water   out   of   the   rocket   as   quickly   as possible,   while   other   systems   often   require   smaller openings.
MAIN CONSTRUCTION
First   of   all,   let's   talk   about   the   main   construction.   In our   case,   this   consists   of   18mm   thick   plywood . This   thickness   is   necessary   to   withstand   the   heavy forces   during   operation.   The   components   of   the launcher   are   a   base   plate   and   three   feet   of   the same    size.    The    feet    should    have    a    hole    on    the underside,   which   will   later   allow   it   to   secure   the launcher   to   the   ground.    The   base   plate   has   some holes    as    well,    so    that    the    pipe    system    can    be attached     later.     You     can     download     a     detailed technical   drawing   with   all   relevant   dimensions   of the    main    construction    as    a    PDF    file.    Next,    you should    prime    the    construction    and    then    apply external   coating .   After   waiting   a   day,   the   feet   can be screwed to the base plate.
PIPE SYSTEM
Now,   we   can   take   care   of   the   core   of   the   launch pad   -   the   pipe   system,   which   will   later   supply   the rocket     with     compressed     air     and     water.     This consists    of    a    set    of    fittings    that    are    screwed together.   Use   some   Teflon   tape   to   seal   the   threads well.    At    both    ends    of    the    water    and    air    supply there   are   fittings   for   garden   hose   couplings ,   so that      hoses      can      be      connected      without      any problems.      Alternatively,      you      can      also      use pneumatic    connectors .    On    the    side    of    the    air connection    there    is    a    non-return    valve     which prevents   water   from   entering   the   air   pump.   On   the other    side    there    is    a    ball    valve     to    manually disconnect   the   water   filling   system.   In   the   middle of   the   system   there   is   a   T-piece   into   which   a   short pipe   with   a   suitable   thread   has   been   screwed   in. The   system   is   now   attached   from   below   to   the base   plate    of   the   launcher.   We   recommend   using two pipe clamps  and threaded rods.
Next,    we'll    make    the    connection    between    the rocket   and   launch   pad.   It   consists   of   a   copper   tube with   a   diameter   of   22mm.   An   adapter    is   attached to   one   end   of   the   tube   system.   On   the   other   side,   a reduction   sleeve    from   28mm   to   22mm   is   fitted. They    are    attached    by    soldering    them    together. First   of   all,   the   parts   are   sanded   with   a   special cleaning   fleece    at   the   corresponding   points.      Next, you   should   apply   some   flux    to   the   soldering   area. Wear   gloves   and   do   not   to   get   in   contact   with   the flux.   You   can   then   put   the   parts   together   and   heat them   with   a   blow   torch    or   a   gas   burner.   It   is   best not   to   heat   the   joint   directly,   but   to   keep   the   flame at   a   nearby   point   on   the   pipe.   After   the   tube   has been    sufficiently    heated,    the    solder    can    now    be hold   to   the   joint   from   above.   If   you   have   applied the   flux   correctly,   the   solder   runs   around   the   joint and   seals   it.   As   soon   as   a   small   drop   forms   on   the bottom,     you     can     continue     with     the     second junction.    When    the    connector    has    cooled    down, you   can   wipe   off   the   remains   of   the   flux   and   start placing   cable   ties   around   it.   Put   a   bottle   of   the same   type   as   you   used   on   your   rocket   into   the reduction   sleeve.   The   cable   ties   should   be   placed directly   against   the   collar.   First   you   can   use   some tape    to    fix    the    cable    ties.    Then    pull    two    hose clamps    around   the   cable   ties   as   tightly   as   possible. Now    the    connection    can    be    screwed    onto    the launcher.   Don't   forget   to   use   Teflon   tape    for   that too.
cable ties
PVC pipe
reduction sleeve
O-ring seal
LAUNCH TUBE
TRIGGER
AIR AND WATER SUPPLY
To    ensure    a    stable    and    straight    launch    of    your rocket,   we   recommend   the   use   of   a   launch   tube. This   is   basically   just   a   tube,   which   is   inserted   into the   connector   and   has   the   effect   that   the   rocket reaches   a   higher   altitude.   We   recommend   to   wrap some   tape   around   the   launch   tube   before   inserting it    into    the    launcher.    Unfortunately,    conventional PVC   pipes   are   often   too   weak   to   withstand   the   high forces   at   launch.   Therefore,   the   PVC   pipe   with   a diameter   of   20mm   should   be   reinforced   on   the inside with a steel pipe.
Now   only   the   trigger   for   the   launch   pad   is   missing. You   can   use   a   short   PVC   pipe ,   which   you   put   over the   connector   and   the   rocket.   As   soon   as   you   pull the    PVC    pipe    down,    the    rocket    will    launch.    To prevent   an   unintentional   launch,   we   suggest   using multiple   cable   ties   as   a   spring.   Now   you   need   a deflection .    We    use    a    U-piece    made    of    bent aluminum   for   this   purpose.   Two   nylon   cords   are attached   to   the   PVC   pipe.   You   can   now   attach   your release    line     with    a    snap    hook    Before    you    can place   your   rocket   on   the   launch   pad,   you   will   need to   install   an   O-ring   seal   above   the   thread   of   your rocket.   We   use   a   O-ring   with   a   diameter   of   15.5mm   and    a    t hickness    of    2.6mm ,    but    slightly    different sizes should also be just as good.
The   last   thing   we   have   to   do   before   the   launcher   is completed    is    to    take    care    of    the    air    and    water supply.   The   air   is   supplied   using   a   10-meter-long garden    hose,    which    can    be    connected    to    the launcher    with    a    coupling.    If    you    have    installed compressed    air    valves    at    your    launcher,    use    a compressed   air   hose   instead.   On   the   other   side   of the   hose   you   have   to   attach   a   car   tire   valve .   Sand it,   wrap   it   with   teflon   tape,   put   it   into   the   hose   and fix   it   with   a   hose   clamp.   You   can   now   connect   your air   pump   to   this   valve   and   build   up   pressure   in   the rocket.    The    water    filling    system    is    a    bit    more complex,   but   it   allows   a   comfortable   filling   of   the rocket.    We    use    a    pressure    sprayer    of    which    the nozzle    is    sawn    off.    Instead,    we    have    attached    a garden   hose   to   it   using   a   hose   clamp.   To   use   your filling   system,   simply   fill   water   into   the   pressure sprayer      and      build      up      pressure      using      the integrated    pump.    Then    open    the    valve    of    your launch   pad   and   the   water   will   flow   into   the   rocket. It   is   important   that   you   fill   the   water   into   the   rocket before you build up pressure with the air pump.
Attachement of the pipe system
Soldering the components together
Connection with cable ties attached
Final connection
air pump pressure sprayer KUPPLUNG KUPPLUNG KUPPLUNG KUPPLUNG launcher PDF PDF PDF Air Command Water Rockets THIS TUTORIAL WAS TRANSLATEDWITH THE HELP OF
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