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Old 01-25-2017, 09:44 AM
Stogey's Avatar
Stogey Stogey is offline
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Join Date: Feb 2008
Location: Colorado Springs
Posts: 32
Default DIY Altitude Chamber

Winter can be a good time to do stuff.
This winter three of us decided to learn about the electronics, characteristics, limitations, and capabilities of a couple different altitude recorders.
On the test bed: Jolly Logic's AltimeterThree, PerfectFlite's StratoLogger SL100, and EggTimers Quark.

The JL3 and SL100 are fully assembled and just about ready to fly out of the box, the EggTimer Quark requires assembly (at the component level - our build video is in work).

We wanted to comprehend the drogue deployment, main deployment, and altitude recording of the SL100 and Quark. The JL3 provided us with a device to compare the results along with readily accessible metrics (graphs and spreadsheets).

We discussed strapping a few Ms onto a lawn chair and going up with the computers to witness the apogee events and main chute events; we scrapped that idea when the wives began supporting the effort.
A moment of clarity came to Scott while in the shower... why not use the Food Saver with the marinating containers, put the devices inside and 'launch' them in our defacto altitude chamber!?

The rest is history... for your viewing pleasure; a test of the Quark & JL3, followed by a test of the SL100 & JL3, and finally, the Quark, SL100, and JL3 along for the same ride.

Quark and JL3
https://youtu.be/mepctW1FLaI

SL100 and JL3
https://youtu.be/aZWsy8mDUYM

Quark, SL100, JL3
https://youtu.be/e_KTH2DmwM0
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