Help me win! Some of you might not be aware of the newsgroup rec.models.rockets http://groups.google.com/groups?group=rec.models.rockets design contest DESCON....
Hello and Happy New Year to all on the micro hybrids group . . . I stumbled upon your discussion forum on the final day of 2003 and couldn't resist joining....
I am using ISI chargers. I don't know anything about the other brand, but EMRR bought some type that were a tad too long. So it might be better to stick with...
Order the "standard screw valve" type, not the "Push Valve" type. It is possible that the Push Valve type will work but I haven't tried them yet. I have used...
... buying ... Save your enthusiasm for after you have tried one ;) Seriously, the microhybrid is very cool as long as you look at it for what it is, and what...
... those whippitz ... device/technique to ... theory as ... motor, and ... the holding ... I just looked over the archive of messages to this group, and THIS ...
Sorry for the delay in this post. Been a bit busy. On the topic of hybrids for model plane propulsion, I've done some design work for low thrust (throttleable)...
... wrote: Hi Ben. Nice long post there ;) It took a while to digest, but I'm ready to try to tackle it. Replies inline. ... What is the weight you would be...
The push valve is exactly what I am looking for... cool... I can order one and work on my prototype... however my prototype is will probably take up to 2-3...
Hi Paul . . . Thanks for your insights. I would be very interested in seeing photos of your motor and learn more about it. Yes, a hybrid will always be a...
I have had an idea on a way to make the MH motors lighter but my idea is instead of leaving the cartridge on the ground to leave all the aluminum tube that...
Hi Todd . . . It looks like we're on a roll here. I'll set up our dialogues on a conversational basis. I'm also going to cross-post this message on the Model...
Here is a question... how thick does the walls of the aluminum tube have to be to safely contain 700 - 1000 PSI? The tube is 29mm external dia. and 124mm...
OK So straight up, thrusts below 5N are gonna be tough. This is principly because of problems fabricating the injectors and nozzle. The only ignition option...
This group doesn't support attachments, however, you can post them in the files section on Yahoo. Dick Stafford http://home.comcast.net/~rstaff/index.htm ......
Wall thickness depends on the grade of Al. 1.5mm is fairly safe... Now let me inject a couple of notes of warning here. 1. I, like most people at the time,...
Has anyone tried wrapping kraft paper and a layer of aluminum foil together and using the glued mass as a propellant slug?? I am thinking the aluminum will...
Yea, I have had a full CO2 cylinder (for pellet guns) fire off out of the enclosure on me... needless to say I didn't see it move ... I just heard it hit 2...
Hi Paul . . . The planes we are talking about here aren't launched straight up like the rocket models you and I (also) both fly. These Jetex/Rapier models are...
... 11Ns hmmmm that along with the added weight of the case is a concern. others have mentioned Arts Saucers for test units, thats fine with me! ... we are...
Actually I have a Jetex motor around somewhere, used to fly a little rapier freeflight model with it. Lots -o fun. :-) Ignition of the hybrid isn't by glow...
Hi again everyone . . . Much converation today coming from me about all this model airplane hybrid motor stuff. Sorry to move off topic with long explanations...
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