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Discussion in 'Low Power Rocketry (LPR)' started by rickster75, Jan 21, 2020.
What is the Best Low power kit that will carry an altimeter 3 safely.? Has enough room?
Estes Patriot. Its BT-60 and a C6, C12, D16, D10/13, D21/24 are great for lofting the alt
What does "best" mean to you? Flies the highest on a given motor? Has a separate payload section?
AltimeterThree fits comfortably in a 1 inch tube (Estes BT-50) so there are LOTS of choices from there on up (such as the Patriot suggested above). Basically most anything that's at least a couple of inches longer than an Alpha will work.
If you're building something new, one great candidate that's currently available is the Estes Multi-Roc. It has a separate payload section with more than enough room for an AltimeterThree, and can be flown single stage, two stage and with or without a parasite glider. Lots of room there to gather different sorts of data. But that's only one option.
Apogee Research Express is a great first, LPR that includes a payload bay. My son and I built one as our first rocket during a STEM weekend workshop, and I've built a second one just for fun. The rocket includes fin alignment slots in the body tube and a Kevlar shock cord. Fun on A and B motors in small parks, and really fun on the Quest D16-6 in a larger field.
I've looked at that Research Express but I haven't tried one yet, or I might have suggested that one. I need to get one and try it out.
I bought an Estes Air Walker to fly my AltimeterThree in. It fits great in the clear payload section and goes to about 175’ on a B6-4 or 260’ on a C6-5. Fun to play around with in a small launch site.
Those numbers sound way low. How have you vented your Air Walker's payload section?
Here is a flight of mine from December 14th.
The FlightSketch Mini data for the same flight are here: https://flightsketch.com/flights/610/
Ignore the weather data in the FS Mini info—clearly the Android tablet that I was using to control the altimeter that day thought it was somewhere else.
A prior flight on another C6-5 got to 642 feet as reported by both devices. Having flown lots of altimeters in lots of models, including several about this size, the numbers I'm getting seem plausible.
I'd love to see the AltimeterThree graph of your 260 foot flight on a C6-5. Either it weathercocked HUGELY or you're carrying a couple of ounces of ballast or something else is going on....
There are a billion LPR rockets that will carry the Alt3 effectively. There is no "best". All you need is a payload section at least 3" long on the interior, anything from BT50 on up.
Given the Alt3 weighs about .35 oz, it should be a big enough rocket so that that weight won't overwhelm it, and take into account the extra weight when selecting a motor.
I misspoke. I went back and looked and the flights I did were all on B6-4s. The altitudes were between 174-262 ft. The variance is due to the launch angle and winds.
The altimeter is held in place by a piece of foam, above and below. There are two holes for vents and I also use them to reach the altimeter power button.
It's a great vehicle for flying in small fields if you want to play around with the altimeter.
That those are B6 flights makes MUCH more sense.
The OP posts the same type of question in multiple forums, then he disappears. "What is the "best" this or that?" These questions are unanswerable and tiresome.
Any 1 inch rocket tube should be fine just make sure to have at least 2 1 mm holes in the body. This is a good video that explains altimeters
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