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#1
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![]() Hi! Quick question. Do you ...
a) use the two-piece launch rods provided with most launch pads? b) use a single-piece launch rod? c) use a launch tower because you're really old school? d) shun rods entirely in favor of rails? Please assume this is for low-power (D and below motors) launching. Details about your choice would be welcome. How "dangerous" actually is that mid-rod joint on the assembled rods? Yup, it's the old "portability vs. utility" question. I don't necessarily mind hauling around a length of pipe to keep my one-piece rods in, but I'd just as soon not if there's no real value in it. Cheers!
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Bob Portnell, Sparks, Nevada NAR #87762, NARTREK Silver, Not an actual Silver Snoopy awardee "Flying Like It's 1980" |
#2
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![]() Single piece launch rods. 36 long for 1/8 & 3/16 rods, 48 long for a 1/4 rod.
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#3
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![]() 36" 2-piece from Estes. Never had a problem with it.
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#4
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![]() Single piece 36. Carry in a PVC tube. In addition to keeping the rods from getting bent, the PVC helps prevent rusting. I wipe them down with WD-40 before storing.
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Don NAR 53455 "Carpe Diem" |
#5
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![]() I have a single piece stainless steel 3/16" and 3/8" rods. My 1/8" rods have all been two piece for 45 years.
Never had an issue with a two piece rod. Earl
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Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
#6
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![]() I use 1-piece stainless steel rods in 1/8, 3/16, and 1/4".
Have never used those flimsy 2-piece aluminum things.
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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. |
#7
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![]() Single and two piece launch rods. Single piece 36 long for 3/16 rods, 48 long for a 1/4 rod and a 1/8 two piece rod. Someday Ill probably have a rail - when I can pick one up rather than have it shipped...
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#8
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![]() I generally use one-piece rods....back in my first rocketry period (1968-1974) I used 1/8 inch music wire from the hobby shop. I still have a couple of those. Today the 1/8 and 3/16 rods are stainless (3 foot 1/8 inch, 3 and 4 foot 3/16ths).
My current PVC tripod pads and three-pad rack are set up to carry launch rods in a case which uses two legs of the pad. The two-piece rods (which havent been aluminum for a long time, GH) are usable but subject to easy bending at the roll pin joint. Carefully handled, they are certainly usable. If I was planning on using one Id probably try to chamfer the socket end a little bit before assembling it so that the joint is as smooth as possible once assembled. For PSII stuff I have a six foot steel 1/4 inch rod from the hardware store, which needs to be de-rusted before every use. I will probably cut it down to 4 1/2 or 5 feet now that TARC pretty much requires a rail. I do have a six foot 1010 rail pad as well. But all that stuff is beyond the D and below scope of the original question.
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Bernard Cawley NAR 89040 L1 - Life Member SAM 0061 AMA 42160 KG7AIE |
#9
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![]() A and B. Both options work fine.
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www.BRSHobbies.com - Full line of model rocket products! Free shipping offer! No backorders or delays! |
#10
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![]() I have switched most new builds of rockets that used 1/8 and 3/16 to MakerBeam 10mm rail. I have both 900mm and 1500mm lengths (roughly 36 and 60). Larger, including most mid-power, I use 20mm rail from 8020 (1 rail is essentially 25mm rail, so 20mm is a bit smaller). My 20mm rail is 48. I have used a friends 96 rail for my Super Orbital Transport. I get my micro and mini buttons from rail-buttons.com. The new minis have flathead screws that fit flush into a countersunk button recess.
Here is a picture showing MakerBeam and 20mm rail, with their micro and mini buttons. A 1/8 launch lug is in picture for comparison. Also shown is my Rockwell JawStand with 20mm rail. My longer MakerBeam rail is silver, which is better in hot, sunny conditions. I have flown an Estes V-2 using micro buttons, but would normally use minis.
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Lee Reep NAR 55948 Projects: Semroc Saturn 1B, EAC Firecat (Mini HoJo bash), Scorpius, DBRM In the Paint Shop: Nothing! Too cold! Launch-Ready: Farside-X, Maxi Honest John, Super Scamp |
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