#1
|
||||
|
||||
Centuri LIA-77 Launch pad
I came across an original Centuri igniter/deflector a while back and have been trying to replicate the tripod. I've built a couple by trying to scale from photos, just can't get the look right. Does anyone have one that could post tripod leg tracings or info?
Thanks John |
#2
|
||||
|
||||
John,
Legs are cut from 1/2" x 3" pine and base is from 1/4" masonite. Photo is here and pattern is here. We were going to produce this last year, but the cost would have been in the $25 -$30 range. We felt that would be too high to continue the project. We have quotes on the blast deflector. I started to order a few just so I could produce a few pads for our use. I saw an LIA-100 at TARC a few years ago. The student did not know what it was. He said he borrowed it from his Dad's old stuff. It had been well-used, but was still recognizable. I talked him into using the pad supplied by TARC and told him to go back and see if his Dad kept any of his other stuff from the 60's.
__________________
Carl McLawhorn NAR#4717 L2 semroc.com |
#3
|
||||
|
||||
Would like to see Carl produce the LIA-100.
Several would be sold surely. I think the price for that LIA-77 sounded good.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC ! |
#4
|
||||
|
||||
Quote:
Carl, Thanks so much for the scans and info, I should have a working LIA-77 in a couple of days. Thanks also for Semroc, great products but most important, the best customer service! Thanks John Last edited by JohnNGA : 02-15-2013 at 03:23 PM. |
#5
|
||||
|
||||
Quote:
What else did one get for the extra buck-twenty? Longer leads? 3/16" rod? Doug .
__________________
YORF member #11 |
#6
|
||||
|
||||
I'm pretty sure everthing on the 100 is up-scaled. Nothing is mentioned in this catalog page in the deflectors being different.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC ! |
#7
|
||||
|
||||
Quote:
The different deflector material is in the second bullet on each page. Doug .
__________________
YORF member #11 |
#8
|
||||
|
||||
It was larger in size. I think the legs were longer and the rest was the same, except for the 3/16" launch rod. The asbestos, if present, was a good idea. The blast deflector did not cover the masonite, so even the smaller engines would destroy it in a few launches. The LIA-77 I have does not have the asbestos pad.
The shipping weight was one pound more, 4 pounds for the LIA-100 vs 3 pounds for the LIA-77. I had plans for the LIA-100, but I cannot find them now.
__________________
Carl McLawhorn NAR#4717 L2 semroc.com |
#9
|
||||
|
||||
Quote:
I would think even the asbestos would get blown away by the blast. I was tired of having Estes blast deflectors gunk and rust up, so I decided to paint a few with Hobbypoxy paint. Of course, the first launch simply blew a chunk of paint off! The second launch got under the paint layer and blew even more off. I bought a roll of asbestos paper, intending to glue it to blast deflectors, and to our club's rack launcher, but never did anything with it.
__________________
Roy nar12605 |
#10
|
|||
|
|||
Skip the steel and the asbestos.
Ceramic is the way to go. Or buy a few cheap galvanized roofing shingles and replace them as they burn through or get too grungy.
__________________
NAR #27085 - Oregon Rocketry - SAM |
Thread Tools | Search this Thread |
Display Modes | |
|
|