#31
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Estes used washers on one of their shuttle kits. |
#32
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That be the Estes Shuttle Starter kit.......made of TufLight
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Don NAR 53455 "Carpe Diem" |
#33
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If I went with additional nose cones it technically wouldn't be the same rocket. I was just looking for a way to get "A" thru "E" motors in the same airframe. Local club proposed an Alphabet challenge for this years launching. It turned into self paced since I couldn't compete with the Level 3 guys after "I". |
#34
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So, instead of changing nose cones, and, it might be difficult to make weight changes with the standard Baby beretha nose cone, why don't you just build a fllet of rockets, paint them all a different color to distinguish them from each other and possibly have a drag race. It would be most impressive. If you have any photos, please post them for all to see. Best wishes RD |
#35
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What A were you planning on using?
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Don NAR 53455 "Carpe Diem" |
#36
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Probably the A8-3, ideally I would have preferred to a shorter delay. With a little better pre thinking I could've just built motor mounts into a BT-60 coupler and used 4 Quarter "A's". But I can't seem to get two 13mm engines into a 24mm mount. Rocksim claims I will get about 150 feet and stable velocity off the rail. I only have a half ounce of nose weight installed maybe a little more (Used Clay epoxy). If I remember correctly from the Estes Forum you were the man behind the little rocket. Great little flyer, I currently have three of them. The original Baby I built, one my son put together a couple of years ago and now the 24mm. I also have plans for a 4" upscale (38mm). If I get a photo of it I will post it. Right now I am holding off on painting till the weather warms up. So the newest Baby doesn't have any clothes.
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#37
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http://nar.org/SandT/pdf/Estes/A8.pdf http://nar.org/SandT/pdf/Estes/A10T.pdf You can always use the "insert smaller motor into the larger motor casing" method for motor mount adapters. When simming it, make sure you add the weight of the empty motor case as mass. Quote:
No, that would be Ken (Rocket Doctor). But I use it to make Goonies. My favorite is a design from Phred called the Goony Ghost. I painted it with glow-in-the-dark paint. My niece got a kick out of it.
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Don NAR 53455 "Carpe Diem" |
#38
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That's really splitting hairs , but I guess you are constrained by the rules you were given for the club challenge, right? But still, simply swapping the nose cone for an identical one that just happens to have a different weight doesn't actually change the airframe itself, so... Are there any Pink Book lawyers out there? (...even though this is not a Sporting Code-related issue?) If you can't change parts, then are you required to use the same chute for the A flight as you would for the E? What do the challenge rules say about the different diameters between the A-C motors and the E? Do you have to use the very same motor mount, with no modifications, additions or subtractions, for all 5 impulse levels? This must be some challenge, then. Mark (working on my NAR JD... ) P.S. Don't take my comments above too seriously... I'm just riffing.
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Mark S. Kulka NAR #86134 L1,_ASTRE #471_Adirondack Mountains, NY
Opinions Unfettered by Logic • Advice Unsullied by Erudition • Rocketry Without Pity
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#39
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The Baby Bertha is in the top 5 sellers in the Estes line. Gonny's are very popular using the Baby bertha as a basic kit. If you check out Excelsior Riocketry, Phred has a huge variety of Goony's made from the Baby bertha. |
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