Rocket not launching (broken launch controller)

Discussion in 'Ground Support' started by Danielh05, May 18, 2019.

Help Support The Rocketry Forum by donating:

  1. May 18, 2019 #1

    Danielh05

    Danielh05

    Danielh05

    New Member

    Joined:
    May 18, 2019
    Messages:
    4
    Likes Received:
    0
    Gender:
    Male
    I'm pretty sure the launch controllers broke and I'm desperate to use it right now, can I just use a barbecue lighter to start the engine?
     
  2. May 18, 2019 #2

    dhbarr

    dhbarr

    dhbarr

    Amateur Professional TRF Supporter

    Joined:
    Jan 30, 2016
    Messages:
    5,515
    Likes Received:
    522
    Absolutely should not, that's fairly unsafe and definitely a violation of the Model Rocketry Safety Code.

    Can you tell us what your launch controller is or isn't doing that makes you suspect it's broken?
     
  3. May 18, 2019 #3

    cwbullet

    cwbullet

    cwbullet

    Obsessed with Rocketry Staff Member Administrator TRF Lifetime Supporter Global Mod

    Joined:
    Jan 24, 2009
    Messages:
    22,095
    Likes Received:
    1,243
    Gender:
    Male
    Location:
    Glennville, GA
    Thing good will happen from standing close enough to do that.
     
  4. May 18, 2019 #4

    Handeman

    Handeman

    Handeman

    Forum Supporter TRF Supporter

    Joined:
    Jan 18, 2009
    Messages:
    7,450
    Likes Received:
    97
    Location:
    Stafford, VA
    It would have to be a K or larger motor to fit that barbecue lighter all the way in, but if it fits, go for it.

    If his health insurance doesn't have a Darwin clause, they will still pay for his ER and Burn Unit medical bills which he will definitely need. Probably higher medical bills for trolls than for humans....
     
  5. May 18, 2019 #5

    Danielh05

    Danielh05

    Danielh05

    New Member

    Joined:
    May 18, 2019
    Messages:
    4
    Likes Received:
    0
    Gender:
    Male
    the led won't turn on so I opened everything up and its all in place, it should be working I don't know why it wouldn't... (its the newer Estes launch controller which came with the starter kit)
     
  6. May 18, 2019 #6

    Danielh05

    Danielh05

    Danielh05

    New Member

    Joined:
    May 18, 2019
    Messages:
    4
    Likes Received:
    0
    Gender:
    Male
    no trolls here...
     
  7. May 18, 2019 #7

    dhbarr

    dhbarr

    dhbarr

    Amateur Professional TRF Supporter

    Joined:
    Jan 30, 2016
    Messages:
    5,515
    Likes Received:
    522
    How new are the batteries, and do you get a continuity test when you clip the leads to each other?
     
  8. May 18, 2019 #8

    Steve Shannon

    Steve Shannon

    Steve Shannon

    Well-Known Member

    Joined:
    Jul 23, 2011
    Messages:
    4,986
    Likes Received:
    1,257
    Location:
    Butte, Montana
    The LED will only light when you have continuity through the igniter or if you touch the clips together. The LED will not light if the LED is bad or the batteries are bad or backwards. Even so you may be able to light an igniter.
    Check the batteries. Try the launch controller on a spare igniter that’s safely separated from anything flammable or your eyes or skin.
     
  9. May 19, 2019 #9

    Danielh05

    Danielh05

    Danielh05

    New Member

    Joined:
    May 18, 2019
    Messages:
    4
    Likes Received:
    0
    Gender:
    Male
    The batteries are brand new and there is no continuity when their clipped together
     
  10. May 19, 2019 #10

    David Schwantz

    David Schwantz

    David Schwantz

    Well-Known Member

    Joined:
    Jul 23, 2018
    Messages:
    545
    Likes Received:
    129
    Gender:
    Male
    Location:
    MN
    You must push the round safety pin in first,and hold it in, then push the square launch button. It will not come on if you push the square button first.
     
  11. Jun 17, 2019 #11

    shreadvector

    shreadvector

    shreadvector

    Well-Known Member

    Joined:
    Jan 19, 2009
    Messages:
    8,822
    Likes Received:
    84
    For the orange controller from Estes with the 9v battery:

    1) Must be fresh ALKALINE 9 volt battery. Test it with a voltmeter (free from Harbor Freight with coupon). If it has less than 9 volts it is NOT 'fresh'.
    carbon-zing batteries - sold as "heavy duty" - are crap and cannot delvier the required current.

    2) The safety key is a pin that has a rubber thing that pushes it out of the hole for safety. You MUST push it HARD to make contact. AND, even if you push it hard, it can be loose, so you may have to wiggle it as you push it to make contact inside. The continuity lamp will only light up if the micro clips are making contact with each other or connectedto a good starter or igniter.

    3) If everything appears to be good, and you press in the safety key and then simultaneously press in and HOLD the launch button, the tiny bridge wire at the tip of the Starter will glow red hot. if it is not glowing red hot, and it is just 'heating up a bit', then you have a problem: could be dirty clips, weak battery, safety key not pressed in for full contact, broken wires inside the launch leads (usually near the clips, but they could be anywhere - especially if you wrap the leads around the controller when storing or transporting it, which helps break the wires inside. NEVER do that.
     
  12. Jun 17, 2019 #12

    kyle

    kyle

    kyle

    Well-Known Member

    Joined:
    Nov 9, 2013
    Messages:
    269
    Likes Received:
    29
    Here's what I did, step by step:

    1. Replace battery
    2. Remove rubber ring from safety key
    3. Buy Quest launch controller.

    No problems since 3.

    EXCEPT: every once in a while an engine has a bit of clay plug covering the BP and no amount of battery juice in the world will light it. Then ream out with tiny screwdriver to expose BP and launch your rocket.

    Edit to correct spelling.
     

Share This Page