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Model Forum / General / Rockets / August 2007E11-3J motors...what do you fly them in?
Hello...here's an interesting question. I like the black jack motors (nice smoke trail makes tracking easy), but there seem to be a pretty poor selection among the hobbyline cases. I have a couple kits that I can fly the F12 in, but so far I have yet to come up with a good model for the E11-3 reload. Any suggestions for what models this motor works well in? The combination of moderate power but short delay tends to make it more suited for heavier rockets, but then the low average impulse causes the liftoff speed to be rather risky. (In my Wart Hog, this motor sims to around 350 - 400', nice for small fields but it only clears the rod (a 4' rod) at around 21 fps. I've lost rockets in the past when they arced over at liftoff and then built up speed. So....what do you fly this motor in? Craig > so far I have yet to come up with a good model for the E11-3 > reload. Any suggestions for what models this motor works well in? I got a helluva flight out of an old Estes Renegade on one of these. Needs a big field though; it seemed like it was never going to stop boosting...  SignatureGordon S. Hlavenka http://www.crashelectronics.com It's bad luck to be superstitious > Hello...here's an interesting question. I like the black jack motors (nice > smoke trail makes tracking easy), but there seem to be a pretty poor [quoted text clipped - 8 lines] > then built up speed. So....what do you fly this motor in? > Craig Big Daddy, Mean Machine or a saucer? Already answered by many people on The Rocketry Forum. Signature"""Remove "zorch" from address (2 places) to reply. http://www.sirius.com/ > Hello...here's an interesting question. I like the black jack motors (nice smoke trail > makes tracking easy), but there seem to be a pretty poor selection among the hobbyline [quoted text clipped - 7 lines] > motor in? > Craig >Already answered by many people on The Rocketry Forum. Your attachment with answer didn't make it through. Maybe rmr arbitrarily moderates things - like the knob filter on TRF. Phil, You sent your response to the wrong Fred. Fred Walace > >Already answered by many people on The Rocketry Forum. > > Your attachment with answer didn't make it through. Maybe rmr > arbitrarily moderates things - like the knob filter on TRF. I had no attachment. Signature"""Remove "zorch" from address (2 places) to reply. http://www.sirius.com/ >>Already answered by many people on The Rocketry Forum. > > Your attachment with answer didn't make it through. Maybe rmr > arbitrarily moderates things - like the knob filter on TRF. spread sphincter wrote: > Already answered by many people on The Rocketry Forum. who gives a damn about The Kiddie Forum? did you ever think that people don't want to have to go to that cesspool just to get an answer to a question they post here? see i can post this here with no problem. if i post it there i get a freaking 'infraction.' passing out demerits. *yawn* He posted the same question here and on The Rocketry Forum. Here the responses are 85% useless crap. On TRF the responses are 99% useful. It is very simple to understand. Signature"""Remove "zorch" from address (2 places) to reply. http://www.sirius.com/ >> Already answered by many people on The Rocketry Forum. > [quoted text clipped - 3 lines] > > passing out demerits. *yawn* On Aug 16, 1:54 pm, "Fred Shecter" <fred.e.shec...@zorch.alum.zorch.mit.edu> wrote: > He posted the same question here and on The Rocketry Forum. > [quoted text clipped - 3 lines] > > It is very simple to understand. They officially gave a stay of execution to "The Original Knob" today, as long as he behaves like an 8 year old. >Here the responses are 85% useless crap. You've just managed to get it from 80% to 85%. Of course I know that my response doesn't help much either. Thick, light rockets. Rough calculations say that 5:1 thrust to weight can be maintained up to 6.2 ounces of rocket (motor weight already removed). The peak thrust is higher than average so that should be safe. Lighter and wider mak it slow down quicker. Ironically, the heavier it is, the slower it slows down, so the delay becomes too short. wRASP says a 5 ounce, 4 inch rocket would be ideal for that motor. Making a 4 inch rocket 5 ounces is the trick. Maybe a 3" Tube Fin I've always wanted to use motors like this myself but faced the same dilemma. I wondered why the short delay, but the long burn is probably the culprit, burning a lot of the delay charge while under power. SignatureTom Koszuta Western New York Sailplane and Electric Flyers Buffalo, NY > Hello...here's an interesting question. I like the black jack motors (nice > smoke trail makes tracking easy), but there seem to be a pretty poor [quoted text clipped - 8 lines] > at liftoff and then built up speed. So....what do you fly this motor in? > Craig Thank you for the replies (both here and on the forum). After gathering the input (and crunching a few numbers) it looks like my Big Daddy (currently waiting for the paint to dry, then the decals and then maybe a clear coat) might work. Assuming stock weight, it has ejection just a tad early with the rocket moving at 74 fps. However, it will likely be a little heavier at weigh in due to the longer shock cord, nylon chute, etc. so that motor should be a good match. Another suggestion refered to tube fin rockets. I checked out some and it looks like the Custom Razor (modified for 24mm) and the ASP Tube finned models should work. Thanks again! Craig > Thick, light rockets. > [quoted text clipped - 25 lines] >> at liftoff and then built up speed. So....what do you fly this motor in? >> Craig > Thank you for the replies (both here and on the forum). After gathering the > input (and crunching a few numbers) it looks like my Big Daddy (currently Big Daddy is probably too heavy for the E11 (or the E9 in spite of the recommendation). Try it on an E18 or E28 instead. SignatureBob Kaplow NAR # 18L >>> To reply, there's no internet on Mars (yet)! <<< Kaplow Klips & Baffle: http://nira-rocketry.org/Document/MayJun00.pdf www.encompasserve.org/~kaplow_r/ www.nira-rocketry.org www.nar.org Sir, if I was building a weapon of mass destruction, you wouldn't be able to find it. Let's try out this goofy new Earthlink outsourced news-server. (Supernews - and naturally Eartrhlink did not inform anyone so the news just stopped until I consulted useless support and various blogs - which were much more helpful) Bob, He is not asking what motor or reload to fly in the Big Daddy. He is asking what rocket he should fly his E11-3 reloads with. See the throrough discussion on The Rocketry Forum. Signature-Fred Shecter remove zorch two places to reply Current eBay auctions: http://search.ebay.com/_W0QQfgtpZ1QQfrppZ25QQfsooZ1QQfsopZ1QQsassZshreadvector Join the Revolution: http://www.sirius.com >> Thank you for the replies (both here and on the forum). After gathering >> the >> input (and crunching a few numbers) it looks like my Big Daddy (currently > > Big Daddy is probably too heavy for the E11 (or the E9 in spite of the > recommendation). Try it on an E18 or E28 instead. On Aug 16, 8:00 pm, "Fred Shecter" <fredzorcheshec...@earthlink.zorchnet> wrote: > See the throrough discussion on The Rocketry Forum. Thorough, especially if you enjoy the advice of a bunch of 10 year olds. ;) Both RMR and TRF are useless & useful in their own unique ways. > On Aug 16, 8:00 pm, "Fred Shecter" > <fredzorcheshec...@earthlink.zorchnet> wrote: [quoted text clipped - 4 lines] > > Both RMR and TRF are useless & useful in their own unique ways. TRF is a bunch of teens that think they understand the science and building techniques They cheer each other on when they get a "Jr" cert, but are too young to drive and meet the "jr cert" person for a burger and fries.. "Jr Knobs" is all I can say... :) >> On Aug 16, 8:00 pm, "Fred Shecter" >> <fredzorcheshec...@earthlink.zorchnet> wrote: [quoted text clipped - 9 lines] > but are too young to drive and meet the "jr cert" person for a burger > and fries.. "Jr Knobs" is all I can say... :) Is it true that TRF is literally run my a teenager out of his parents home? Ted Novak TRA#5512 IEAS#75 > Is it true that TRF is literally run [b]y a teenager out of his parents home? It is run by Carl Tulanko, the NAR Sport Services Commitee Chairman, out of his home in OH, on a Roadrunner connection. Phil Gerringer in NC owns/runs it with him. The other moderators are friends of theirs (and a couple ego-driven suckers), most of which do not fly rockets anymore. Jonathan Hatch (KermieD, MN), and in a lesser way others there, are classic introverted sociopaths. This is what they do when they're bored with their fantasy games and action figures. >Is it true that TRF is literally run my a teenager out of his parents home? Don't know but it certainly presents that illusion. > > On Aug 16, 8:00 pm, "Fred Shecter" > > <fredzorcheshec...@earthlink.zorchnet> wrote: [quoted text clipped - 9 lines] > but are too young to drive and meet the "jr cert" person for a burger > and fries.. "Jr Knobs" is all I can say... :) 2 out of 3 top posters prefer TRF. SignatureTweak Watch it!! >> > On Aug 16, 8:00 pm, "Fred Shecter" >> > <fredzorcheshec...@earthlink.zorchnet> wrote: [quoted text clipped - 11 lines] >> >2 out of 3 top posters prefer TRF. > Watch it!! > [quoted text clipped - 13 lines] > >> > >2 out of 3 top posters prefer TRF. You watch it, mister, lest you too become a statistic. ;-) SignatureTweak Best Big Daddy flight... E28 air starting two D13's. GWiz LC and 2 Duracells in the n/c. Bitchin'!! J >> Thank you for the replies (both here and on the forum). After gathering >> the >> input (and crunching a few numbers) it looks like my Big Daddy (currently > > Big Daddy is probably too heavy for the E11 (or the E9 in spite of the > recommendation). Try it on an E18 or E28 instead. I've launched my "Copper Top" Big Daddy on an E11J-3 about 7 times now and it always flies perfectly, with deployment right at apogee. See if you can figure out how it got its name :-) http://www.nomatech.com/rockets/IMG_6246.JPG http://www.nomatech.com/rockets/IMG_6254.JPG -- David >> Thank you for the replies (both here and on the forum). After gathering >> the >> input (and crunching a few numbers) it looks like my Big Daddy (currently > > Big Daddy is probably too heavy for the E11 (or the E9 in spite of the > recommendation). Try it on an E18 or E28 instead. |
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