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Model Forum / General / Rockets / August 2004Is discussion of motor construction permitted?
Hello everyone, I've been flying rockets for many years and motor construction is the next reasonable step. I've been reading like crazy on the subject learning about safety and propellants but there is very little good information on construction small motors (c-f). I've ordered "Amateur Rocket Motor Construction by David Sleeter" however any websites on the subject would be very helpful. Thanks, strikercat: the "bible": http://www.aeroconsystems.com/literature/composites.htm http://www.space-rockets.com/cptech.html http://www.nakka-rocketry.net/ those should keep you busy for a while..good luck and be careful... shockie B) > Hello everyone, > [quoted text clipped - 8 lines] > > Thanks, All great sites, all talk about only large motors (g-k). thanks for the information. > strikercat: > [quoted text clipped - 22 lines] > > > > Thanks, Striker Cat: > All great sites, all talk about only large motors (g-k). But it's not that big a deal to downscale things. I did some tests with a G-size KNO3/sucrose-engine based on Nakkas design, worked great.  SignatureErlend Meyer You can't be forever blessed > All great sites, all talk about only large motors (g-k). try Jimmy Yawn's site. www.jamesyawn.com . Jimmy's a fount of knowledge, very helpful, and a real nice guy too. Lots of useful stuff on there, especially homebrew SU motors. The Teleflite book's a good reference for an alternative approach too. G. SignatureGraham J. Platt TRA #10112 L2 Making EX motors smaller than "F" can be probmlematic, especially with composites. Sleeter's book is probably the best resource for motors of this size, as it involves compressed powders and sugar motors rather than plastic-bonded composites. Typically, many EX rocketeers will start with something in the 29 or 38mm range. My first motor was a 38mm "H" motor. This size is reasonably small enough for experimental testing, and can be scaled up later if so desired. Wickman's and McCreary's respective books are good for those entering the field, and are usually not far out of reach during mixing/casting procedures. Contrary to popular belief, things do start to get cost effective with larger motors (Firefox sells AP for $7 a pound with bulk discounts). I haven't done the actual math, but after making a few large motors, you will offset the cost of your initial investment (mixers and the like). The Arocket discussion list is a good resource. See www.arocket.net . Once you sign up, you can search or browse through several years' worth of archived messages at www.blastzone.com/arocket . Feel free to email me for more information. My address is bjmcder@comcast.net . > Hello everyone, > [quoted text clipped - 6 lines] > > Thanks, > The Arocket discussion list is a good resource. See www.arocket.net . > Once you sign up, you can search or browse through several years' > worth of archived messages at www.blastzone.com/arocket . I would say ""the archive"" is a good resource. On-going discussions probably won't be what the beginner considers "helpful". Is sugpro still active? Joel.phx Thank you very much for your suggestions. i have not been to arocket before (first new link, like i said i've been reading like crazy!) i have made quite a few engines in the past (years ago), some with good luck some cato'd very nice rockets. I'm hoping this attempt turns some better results. the main reason I'm looking designs for small class motors is field space requirements. There is very little open land around here. hey brian, Looks like i got excited to fast, seams that the site is down? the archive rejected me becouse i'm not on the active list.. any sugestions? As far as I know, you need to part of the active list. > hey brian, > > Looks like i got excited to fast, seams that the site is down? the archive > rejected me becouse i'm not on the active list.. any sugestions? Sorry, it's www.arocket.org, not .net. > hey brian, > > Looks like i got excited to fast, seams that the site is down? the archive > rejected me becouse i'm not on the active list.. any sugestions? The site works, but I tried to sign up, and get an error message. "The URL you loaded has not been found on this server." So I tried contacting the e-mail that is listed for help in signing up (listmgr@arocket.org), and get a return on it. "Host doesn't like recipient". Any ideas on how I can get subscribed to it? Thanks, James L. Marino SAS, LUNAR, TCC, AEROPAC, NAR #75764 L3 TRA #9489 L3 "Ban light pollution, not rocket motors." > Sorry, it's www.arocket.org, not .net. > > > hey brian, > > > > Looks like i got excited to fast, seams that the site is down? the archive > > rejected me becouse i'm not on the active list.. any sugestions? I've been making his motors C, D, F, G for around 12 years now with great sucess. > Hello everyone, > [quoted text clipped - 6 lines] > > Thanks, |
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