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  1. #31
    Join Date
    2nd June 2013
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    SLC, Utah
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    261

    Large High Power Pad Build

    Crap the horizontal section of 2" channel was not set in the right spot in the pics above (in ref to question 2).
    Here it is in the right spot....
    Click image for larger version. 

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  2. #32
    Join Date
    9th July 2014
    Location
    Phoenix, AZ
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    1,305
    Quote Originally Posted by Kip_Daugirdas View Post
    Question 1: The three 2x2 1/8" angles that run horizontally along the trailer frame (zoomed in picture 4), I am worried about weld distortion due to their thickness. Should I consider 3/16"?

    Question 2: The pillow block or bearing mount sits atop 2" square tubing 1/8" thick. The will be reinforced with the horizontal channel running between the pillow block mounts. I do NOT plan on welding closed the ends of the square tubing with caps in order to access the nut to tighten down the blocks.
    Personally, I'd just clamp the snot out of them and weld away. Lots of cheapo vise grips should keep it lined up.

    I think the pillow blocks will be fine on the open tubing. If you're really worried about it, you could use some black pipe as a spacer and make the one bolt a lot longer, to go completely through the box tubing. That would allow you to weld closed the one end.


  3. #33
    Join Date
    2nd June 2013
    Location
    SLC, Utah
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    261
    Quote Originally Posted by Tonimus View Post
    Personally, I'd just clamp the snot out of them and weld away. Lots of cheapo vise grips should keep it lined up.

    I think the pillow blocks will be fine on the open tubing. If you're really worried about it, you could use some black pipe as a spacer and make the one bolt a lot longer, to go completely through the box tubing. That would allow you to weld closed the one end.
    Thanks for the help! I'm thinking the same thing. Clamp the hell out of it and apply heat slowly and evenly to the joints.

    I'm going to finish the last few cuts this weekend and will be welding this guy up next week. Very excited to be done with the launcher so I can focus on the prepping the rocket for Balls.

  4. #34
    Join Date
    2nd June 2013
    Location
    SLC, Utah
    Posts
    261
    Yesterday I assembled my wireless launch controller. I wanted something that was essentially plug and play. I found a 12V wireless remote with theoretical 2000m range on eBay from the Chinese seller Carymart for $70. The device uses a rolling code to "encrypt" the signal. The battery is a small 12V/12amp from Amazon for $30 and the box is $10 from Amazon.

    To increase safety I added a switch on the pad box to turn on the receiver. It is located 60ft from the pad and gives me ease of mind when connecting the leads.

    The system has no continuity check but I use two igniters at the pad and this hasn't failed me yet.

    Should work nicely this year.
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  5. #35
    Join Date
    9th July 2014
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    Phoenix, AZ
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    1,305
    Is it bad that the ammo can is my favorite part?

  6. #36
    Join Date
    2nd June 2013
    Location
    SLC, Utah
    Posts
    261
    Come to think of it, it's mine too

  7. #37
    Join Date
    2nd June 2013
    Location
    SLC, Utah
    Posts
    261
    Took the day off to weld yesterday and I plan on finishing up after work today. All in all it's going together great!
    Click image for larger version. 

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  8. #38
    Join Date
    10th January 2012
    Location
    Phoenix,AZ
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    1,187
    Very nice!
    NAR # 94393
    LEVEL 1 - TWEED B ON A H128W 5/12/2012

    LEVEL 2 - MINNIE MAGG XL ON A J350W 10/28/2012

  9. #39
    Join Date
    25th January 2009
    Location
    Glennville, GA
    Posts
    17,843
    Me likey.
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3
    Formerly a Prefect of ICBM - TRA #60

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    2015 Ns for Year: 1315 Newtons
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCo or ICBM in Camden SC => http://rocketrysouthcarolina.org

  10. #40
    Join Date
    2nd June 2013
    Location
    SLC, Utah
    Posts
    261
    Thanks guys! Finished all the welding yesterday. I plan on getting everything assembled on Sunday. I will have lots of pictures then!

  11. #41
    Join Date
    21st January 2009
    Posts
    1,491
    Well done sir! Once assembled, throw a rocket on there and snap a pic!
    Justin Farrand
    L3 Tripoli 9513
    Chicago Rocket Mafia, "The Eyes"

  12. #42
    Join Date
    9th July 2014
    Location
    Phoenix, AZ
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    1,305
    I'm not sure how I didn't notice before that you're using a 4'x4' trailer. How are the other pieces of truss going to store on it?

  13. #43
    Join Date
    2nd June 2013
    Location
    SLC, Utah
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    261
    The additional section stores directly underneath the pivoted section. I will have pics soon!

  14. #44
    Join Date
    2nd June 2013
    Location
    SLC, Utah
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    261
    Done-ish!!!! I turned this toy trailer into a beast!

    Completed the outrigger mounting under headlamp. Tomorrow all of the steel goes to get powder coated red...I want nothing to do with painting this thing. The pictures were taken throughout the day. And I will take better ones once I do final assembly.
    Click image for larger version. 

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  15. #45
    Join Date
    2nd June 2013
    Location
    SLC, Utah
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    261
    Click image for larger version. 

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  16. #46
    Join Date
    2nd June 2013
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    SLC, Utah
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    261
    More night shots...
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    Now time to disassemble everything. Goodnight!

  17. #47
    Join Date
    5th December 2013
    Location
    MD
    Posts
    6,195
    Wow, that's a lot of work! Brain power and man power! Nice work.
    John S. ---- NAR #96911 ---- TRA #15253 ---- MDRA #067 ---- BARC #028
    L1, 3/15/14: Aerotech Sumo, CTI H133BS
    L2, 6/21/14: Giant Leap Vertical Assault, CTI J240RL
    L3, 3/12/16: MAC Performance Radial Flyer, CTI M1101WH
    Altitude: 13,028', L3 flight; Speed: Mach ???, L3 flight

  18. #48
    Join Date
    2nd June 2013
    Location
    SLC, Utah
    Posts
    261
    So I may have mentioned rail warping in another thread and that's what I'm dealing with right now. The 1530 or 1.5x3" extrusion is dead nuts straight. However the welded aluminum truss does have some twist it appears on a 2m section (not surprising given all the welded cross members). Anyways when I fitted up the two 2m sections and added the rail I noticed that the aft rail clamp was not in line with the truss tubing whereas the other 5 were. I rotated the top truss and that lessened the gap but did not eliminate. If I clamped the aft clamp it warped the rail. So the fit is definitely sensitive to the clocking of the truss.

    I will not settle for any warping to the rail. That will certainly not result in a perfectly vertical takeoff which is what I need this pad for.

    Tonight I have three sections of truss and will try different combos to see which one is the straightest setup. Here's to hoping that such a combo exists.....heh.

    PS. the raw steel/ welded parts all got dropped off for powder coating before work today.


    Click image for larger version. 

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  19. #49
    Join Date
    2nd June 2013
    Location
    SLC, Utah
    Posts
    261

    Large High Power Pad Build

    One of the trusses definitely has twist in it. It even rocks side to side when on a flat surface. If you buy from Global Truss beware of that... I'm guessing the risk of having twist increases with the length of the truss section. If you can buy these from a store so you can check em before you buy do so.

    The other two sections link up nicely and the rail is looking spot on.

    Click image for larger version. 

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  20. #50
    Join Date
    9th July 2014
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    Phoenix, AZ
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    1,305

  21. #51
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    2nd June 2013
    Location
    SLC, Utah
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    Quote Originally Posted by Tonimus View Post
    Nice work. I'm a month behind still.
    Thanks! I'm excited to see how you buildup the bigger trailer!

  22. #52
    Join Date
    26th January 2013
    Location
    Alvin, TX
    Posts
    373
    Nice!

  23. #53
    Join Date
    18th March 2009
    Location
    Wisconsin
    Posts
    3,259
    Quote Originally Posted by Kip_Daugirdas View Post
    One of the trusses definitely has twist in it. It even rocks side to side when on a flat surface. If you buy from Global Truss beware of that... I'm guessing the risk of having twist increases with the length of the truss section. If you can buy these from a store so you can check em before you buy do so.

    The other two sections link up nicely and the rail is looking spot on.

    Click image for larger version. 

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    Return it- tell them it is defective.
    Mark Koelsch
    Tripoli 6155 L3
    Owner of http://www.rocketryfiles.com/
    Editor of http://www.thrustcurve.org/
    Keeper of the motor files

  24. #54
    Join Date
    2nd June 2013
    Location
    SLC, Utah
    Posts
    261
    Quote Originally Posted by markkoelsch View Post
    Return it- tell them it is defective.
    I honestly do not think it's going to help. They are to spec for what they are made for - stage lighting.

    I found a combo that fits together really well.

  25. #55
    Join Date
    2nd June 2013
    Location
    SLC, Utah
    Posts
    261
    Picked it up from powder coat today...looking very red
    Click image for larger version. 

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  26. #56
    Join Date
    2nd June 2013
    Location
    SLC, Utah
    Posts
    261
    I assembled the pad today for the last time. Not much is left to do. I have to make some wheel chalks and rebar stakes for the three trailer jacks and four guy wires.

    Now I plan to shift my focus to getting the rocket (Workbench 2.0) ready for its second attempt at 100K+.

    I'm really happy to have all the work done well in advance of the launch, past years have been some real sh*t-shows. This time I plan to arrive well rested and well prepared.

    Here are the pics (in daylight and I slid a rocket on there for ya!):
    Click image for larger version. 

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  27. #57
    Join Date
    18th March 2009
    Location
    Wisconsin
    Posts
    3,259
    That looks awesome.

    Now all you need is a hydraulic lift system to get it to vertical😎
    Mark Koelsch
    Tripoli 6155 L3
    Owner of http://www.rocketryfiles.com/
    Editor of http://www.thrustcurve.org/
    Keeper of the motor files

  28. #58
    Join Date
    2nd June 2013
    Location
    SLC, Utah
    Posts
    261
    Quote Originally Posted by markkoelsch View Post
    That looks awesome.

    Now all you need is a hydraulic lift system to get it to vertical😎
    Thanks Mark! I do plan to add one in at some point, perhaps next summer. I'm just stoked to be self sufficient out there - especially during the high altitude waiver rush hour!

  29. #59
    Join Date
    1st September 2011
    Location
    Greencastle, IN
    Posts
    1,391
    Very nice build Kip! Great workmanship, thanks for posting a build thread! Lots of great ideas which I hope to put into use.
    L1 - Ash Grove RIP L2 - OAMC - Tripoli OH - L3 - Mid West Power
    NAR - 96297 TRA-15713
    2016 burned - 24824 Ns
    2017 burned to date - 1,395.0 Ns

  30. #60
    Join Date
    21st January 2009
    Posts
    1,491
    Excellent Kip! Thank you for taking the time to share.

    Justin Farrand
    L3 Tripoli 9513
    Chicago Rocket Mafia, "The Eyes"

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