Designer Fly
Member
- Joined
- Aug 29, 2018
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Who is planning a high speed / high altitude flight with one of Mach 1 Rocketry's BT60 Min Diameter Rockets? What is your set up? What (Alt/Speed) are going for?
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Thanks. I was thinking about chopping off the base of the nosecone and putting on a removable bulkhead. I saw a video on line that had some good ideas. I guess if I screw it up I can always get a replacement. I'm going to take my time with it and try to do it right. When it's finished maybe try some CTI 6 grain motors.My "Alien Interceptor" just had its first maiden flight on a G77-7R to 1647 ft at 273 mph...this bird is gonna skewer the sky on an H motor next month!
TOD: I made a wooden payload bay using a popular design found commercially online-took about 45 minutes and I am no carpenter...if you don't have a payload on the scat maybe consider using the inside of the nosecone? I am not too familiar with the firefly mounting requirements but Eric (above) and a few others (mine as well) have made mach one kits and have great build threads on their kits, very helpful in creating your design if you have not found them yet.
I have that kit built and ready to go also. Do not have that Alt, but send me the size of it and I will see if it will fit in mine.I just received my BT55 Scat with 24mm mount. I'd like to find a place for my Firefly altimeter. What have some other people done? Looking for suggestions.
Yup, just started printing the non-rail rail launcher today. It's a 4 day print! EACH!Going to break the G altitude record with a Mach1 24mm rocket.
Thanks Dave! I finished building the rocket and in the meantime also got a Jolly Logic Altimeter 3. I'm just going to attach it to the shock cord at the base of the nosecone with a quick link. With the protective case it fits in the body tube with some room to spare. I drilled three 1/16" sampling holes in the body about 3 1/2" down from the top. I have an AT E20-7W that sims at 1500 ft. I think that will be it's first flight. My club had a launch scheduled for tomorrow that was cancelled due to weather.I have that kit built and ready to go also. Do not have that Alt, but send me the size of it and I will see if it will fit in mine.
Going to break the G altitude record with a Mach1 24mm rocket.
What was your rocket weight without motor?View attachment 376049
That’s a very bold claim Sir. I personally couldn’t break it with a custom 24mm MD carbon fiber bird with Apogee deploy and supersonic NACA profile fins on a CTI G-145. I even put the Telemini tracker in a custom Von Karman nosecone to reduce rocket length. I only simmed 7500ft and M1.4. Using off the shelf CF tube,FARG, 500# kevlar, and Top Flight 12” thin mill chute. Not calling you a liar. Just very extremely impressed if you do end up breaking it the G record. Rest was SLS printed goodies. Getting near it is challenging enough in 24mm. They don’t make a true mellow configuration. Granted I built mine to test airfoils not do records.
That's some nice work Dave. I may look into some stuff from SMT to outfit the rocket I'm building now.Hey tOD, here are a couple ways that you can try. On a plastic NC there is a shoulder part way down, I've epoxied a bulkhead below that with an eye bolt for attachment. Or you can epoxy a bulkhead with blind nuts so that you can screw in a removable one. This also makes it so that you can access the NC inside. Or you can use a bulkhead that screws into the NC shoulder. The one I have here is from SMT, fit perfect and very well thought out.View attachment 376099 View attachment 376100 View attachment 376101 View attachment 376099 View attachment 376100 View attachment 376101 View attachment 376099 View attachment 376100 View attachment 376101
I looked at the Quark. It would be adequate for me and it looks like a good entry level kit, at least the cost of failure is minimalThank you. The SMT one is very nice, did not cost that mush either. I also bought the sled for an Eggfinder mini, but I am also putting a Quark in the nose for deployment, so it would not fit on the SMT tray.
Speed Tape!Well, I kind of got 4 of em. Had Eric build them for me and that last have not yet arrived. Looks like he did a great job even though they have yet to fly.
The Scat flew on St. Patrick's Day on an E30-7T to 1327ft. It also flew at Red Glare on a CTI E22 but I didn't record the flight data. I have a CTI F51 to try on a calm day, that little rocket is hard to keep track of.Looks like you got it covered. Good luck, let me know how it goes.
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