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Model Forum / General / Rockets / April 2005Cesaroni Pro38 and Dual Deploy
Hello All, Is there an issue with using the Pro38 motor without the delay or black powder? I'll be using electronics for the deployment. Peter > Hello All, > Is there an issue with using the Pro38 motor without the delay or black > powder? I'll be using electronics for the deployment. Shouldn't be, lots of people fly this way. Remove the paper cap, pour out the BP, and plug the BP well, Blu-Tack is the preferred material over here from what I've seen.  SignatureNiall Oswald ================================ http://www.bits.bris.ac.uk/niall UKRA 1345 EARS 1151 MARS If you don't want the motor ejection, remove the BP. But in case it wasn't clear, don't fly the motor without the delay element. It's a necessary part of the gas seal of the motor and flying without it would be bad. -- Erik Ebert, L3 TRA #09105 NAR #79868 > If you don't want the motor ejection, remove the BP. But in case it > wasn't clear, don't fly the motor without the delay element. It's a > necessary part of the gas seal of the motor and flying without it would > be bad. There is a UK rocketry legend relating to this.... ;) Also, don't forget the casing - it has been done, on more than one occasion! SignatureNiall Oswald ================================ http://www.bits.bris.ac.uk/niall UKRA 1345 EARS 1151 MARS >> If you don't want the motor ejection, remove the BP. But in case it >> wasn't clear, don't fly the motor without the delay element. It's a >> necessary part of the gas seal of the motor and flying without it would >> be bad. > >There is a UK rocketry legend relating to this.... ;) It's not a legend. SignatureDarren J Longhorn http://www.geocities.com/darrenlonghorn/ NSRG #005 http://www.northstarrocketry.org.uk/ UKRA #1094 L2 RSO http://www.ukra.org.uk/ > There is a UK rocketry legend relating to this.... ;) > It's not a legend. FINALLY! Something good. Ok you two, come across... what's the legend. : ) Randy http://vernarockets.com/ > > There is a UK rocketry legend relating to this.... ;) > > It's not a legend. [quoted text clipped - 3 lines] > Randy > http://vernarockets.com/ Everything true and entertaining is secret. SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay. http://tinyurl.com/6wlp8 >>There is a UK rocketry legend relating to this.... ;) > > > It's not a legend. > > FINALLY! Something good. Ok you two, come across... what's the legend. : ) Several years ago, a guy in a group over here called AspireSpace claimed he knew how to load Aerotech 54mm motors for a student rocketry championship. He didn't. He left out the delay grain, because he thought it wasn't needed. The rest is history :-) Much to everyone's amazement, he got a PhD a few years later (in materials science mind you). Not suprisingly, he got nicknamed Dr Delay Grain. Note: I was once in AspireSpace before I went over to the dark side and joined MARS, but I had left when this event occurred, honest :-) All the best, Richard SignatureMARS Flight Crew, http://www.mars.org.uk "Richard Osborne" <"richard at cyberthinc dot com"> wrote in message news:426daa57$0$2599 snip Gotta love it! : ) Randy http://vernarockets.com/ >"Richard Osborne" <"richard at cyberthinc dot com"> wrote in message >news:426daa57$0$2599 > >snip > >Gotta love it! : ) It wasn't just the fact that it happened, it was the swaggering "I, the rocketry guru, who knows all, shall teach you, the rocketry newbie..." SignatureDarren J Longhorn http://www.geocities.com/darrenlonghorn/ NSRG #005 http://www.northstarrocketry.org.uk/ UKRA #1094 L2 RSO http://www.ukra.org.uk/ >>"Richard Osborne" <"richard at cyberthinc dot com"> wrote in message >>news:426daa57$0$2599 [quoted text clipped - 6 lines] > the rocketry guru, who knows all, shall teach you, the rocketry > newbie..." Are there photos/video of the results anywhere? SignatureNiall Oswald ================================ http://www.bits.bris.ac.uk/niall UKRA 1345 EARS 1151 MARS >>>"Richard Osborne" <"richard at cyberthinc dot com"> wrote in message >>>news:426daa57$0$2599 [quoted text clipped - 8 lines] > >Are there photos/video of the results anywhere? I dunno. It was at an NRC, I believe, or possibly the weekend after at the corresponding K-Lob. 1999? Maybe google can help? SignatureDarren J Longhorn http://www.geocities.com/darrenlonghorn/ NSRG #005 http://www.northstarrocketry.org.uk/ UKRA #1094 L2 RSO http://www.ukra.org.uk/ >>>"Richard Osborne" <"richard at cyberthinc dot com"> wrote in message >>>news:426daa57$0$2599 [quoted text clipped - 8 lines] > > Are there photos/video of the results anywhere? Luckily there were no results, he utterly failed to light any of the handful of motors he incorrectly prepped. Chris SignatureChris Eilbeck MARS Flight Crew http://www.mars.org.uk/ UKRA #1108 Level 2 UYB Tripoli UK Member #9527 LSMR > >"Richard Osborne" <"richard at cyberthinc dot com"> wrote in message > >news:426daa57$0$2599 [quoted text clipped - 6 lines] > the rocketry guru, who knows all, shall teach you, the rocketry > newbie..." That is always a thorn in the side of the "listener". :) SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay. http://tinyurl.com/6wlp8 Occasionally in Texas and once in Alberta IIRC. Those instructions in the reload kit and the one on the case again please. Anthony J. Cesaroni President/CEO Cesaroni Technology/Cesaroni Aerospace http://www.cesaronitech.com/ (905) 887-2370 x222 Toronto (410) 571-8292 Annapolis >> If you don't want the motor ejection, remove the BP. But in case it >> wasn't clear, don't fly the motor without the delay element. It's a [quoted text clipped - 5 lines] > Also, don't forget the casing - it has been done, on more than one > occasion! >Is there an issue with using the Pro38 motor without the delay or black >powder? I'll be using electronics for the deployment. Use the motor-ejection charge as your backup. Set the delay a couple of seconds longer than your expected time-to-apogee, and the motor will pop your chute if the electronics fail. > >Is there an issue with using the Pro38 motor without the delay or black > >powder? I'll be using electronics for the deployment. > > Use the motor-ejection charge as your backup. Set the delay a > couple of seconds longer than your expected time-to-apogee, and the > motor will pop your chute if the electronics fail. Or omit the BP and put a dab of epoxy on the hole. SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay. http://tinyurl.com/6wlp8 It's all outlined in the instructions (please read) and is certified. Epoxy is not required. Anthony J. Cesaroni President/CEO Cesaroni Technology/Cesaroni Aerospace http://www.cesaronitech.com/ (905) 887-2370 x222 Toronto (410) 571-8292 Annapolis >> >Is there an issue with using the Pro38 motor without the delay or black >> >powder? I'll be using electronics for the deployment. [quoted text clipped - 4 lines] > > Or omit the BP and put a dab of epoxy on the hole. > It's all outlined in the instructions (please read) and is certified. Epoxy > is not required. But is an uncertified field mod :) > Anthony J. Cesaroni > President/CEO [quoted text clipped - 11 lines] > > > > Or omit the BP and put a dab of epoxy on the hole. SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay. http://tinyurl.com/6wlp8 No it's not but I suppose adding the epoxy could be interpreted as such. :-) Anthony J. Cesaroni President/CEO Cesaroni Technology/Cesaroni Aerospace http://www.cesaronitech.com/ (905) 887-2370 x222 Toronto (410) 571-8292 Annapolis >> It's all outlined in the instructions (please read) and is certified. >> Epoxy [quoted text clipped - 10 lines] >> >> > Or omit the BP and put a dab of epoxy on the hole. You mean I have to read the instructions !?!?!? What kind of hobby is this???? :) Found it right where it should have been, Thanks a bunch!!! Peter Can't use the motor's charge as there is a bulkplate ahead of the motor tube. >Hello All, >Is there an issue with using the Pro38 motor without the delay or black >powder? I'll be using electronics for the deployment. > >Peter YES!!! It's ok to remove the black powder but DO NOT leave the delay out (unless you just want to cook your rocket & probably ruin the casing. > Hello All, > Is there an issue with using the Pro38 motor without the delay or black > powder? I'll be using electronics for the deployment. > > Peter You need to install the delay element itself, to complete the forward pressure seal of the motor, but if you don't want the ejection charge fired by the motor, it is possible to peel up the cap and remove the powder. -dave w |
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