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TOPIC: New launch equipment

New launch equipment 2 months 2 weeks ago #2573

  • Mario Perdue
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That would be great. Will you be at the launch on May 11 or May 12? If yes, I can get them from you there, otherwise, we can get together sometime next week.

MP
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New launch equipment 2 months 2 weeks ago #2574

  • Mario Perdue
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I've changed the code in the launch pad module to extend the number of groups supported to 8. With 6 pads per group, 8 groups per bank and 2 banks we get a maximum pad count of 96. We shouldn't exceed that anytime soon.

On this system, the countdown is built in and is currently set to count from 5 to 0. I've set the interval to about 3/4 of a second but I can change that. Do you guys want 5 steps? More? Less? Do you want a full second interval or something shorter? IMHO, five real seconds seems pretty long when you start using it.

Eventually, I'll probably make that user selectable but I've got to start somewhere.
Last Edit: 2 months 2 weeks ago by Mario Perdue.
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New launch equipment 2 months 2 weeks ago #2576

  • Bob Dexter
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I'm planning to be there both days. I'll get them to you then

Bob
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New launch equipment 3 weeks 6 days ago #2580

  • Mario Perdue
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Just an update on things. If you were at today's launch you would have seen the new controller wasn't working. After checking the code I found an error in the continuity check routine. I was working on this code when I had to drop what I was doing and take Pam to the emergency room. When I got her home 5 days later and resumed working on the code, I guess I lost my train of thought and finished the routine incorrectly. I have successfully fired igniters again and will set things up in my yard to fully test everything end to end.
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New launch equipment: Blast Deflectors 2 weeks 5 days ago #2581

  • Mark Newton
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While I was getting metal for the mid/high-power launchers, I got a price quote on plasma-cut blast deflectors. Quote is for the following:
304 Stainless Steel (least expensive stainless);
14 gauge thickness
12 inch diameter round deflector
1/2" round hole in the center (guy said center hole doesn't change cost)

for 20 deflectors, it was $415. Stainless material alone was $285 of the total.
Something to discuss.

If we need to save money, the cheapest large blast deflectors are ceramic tile, with drilled hole in the center. Yes, they break if dropped but they are cheap and they don't corrode. 12inch tiles can be had for 40-80 cents each, plus $10 for the tile bit. At that price, you can break a lot and still come out ahead. Not as pretty as SS deflectors, but just as functional. Could use them for NARAM, discard them and buy stainless after the event when we have more cash. Again, something to discuss among members.
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New launch equipment: Rods/Rails 2 weeks 5 days ago #2582

  • Mark Newton
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Just so club members are aware, I am purchasing the following stainless steel rods from the local welding shop: 10 - 1/4" x 4 ft rods, 6- 3/8" x 6ft rods, and 4-1/2"x 6ft rods. If club doesn't want any of these, I'll keep them for my own use.

Is anyone in club going to purchase 8ft long 1010 rails? Jim Strum suggested we call and find out the qty where there is a price break, and if that amount is not huge, order that amount. So many people use rails now, I would think we want 10-12 rails on the range. The place to purchase them is 8020.net in Fort Wayne. Probably cost effective to drive up and get them at the shop. Also need to purchase some hardware (square nuts) that slide inside the rails--need them to make our 1/2" rod adapters to fit rails into our launchers.
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