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I'm selling 3 x Aerotech 24/40 motor cases and 1 x 29/120 Rousetech case on eBay. All are used, but in good condition. They include case, forward and aft closures. See auction here. https://www.ebay.com/itm/-/252136092664?

Have these listed on eBay if anyone's interested. Interceptor E Satellite Interceptor Mars Lander SR-71 Blackbird Super Alpha https://www.ebay.com/itm/-/252119296961?

Yes, the assumption is straight up, but you can touch the circle and drag to re-position if needed. Some others have suggested dual-deployment calc as well, and I definitely see the use for it. I'll try to incorporate into the next update. Also thinking through something, from another...

Thank you all for your suggestions and input. Want to let you know that the iOS version is now available. https://itunes.apple.com/us/app/visual-drift-distance-calculator/id975189309?mt=8

Those are excellent suggestions. Thanks! Please post after you've had a chance to use it in the field and let me know how it worked for you.

Thanks! Hope you like it.

Thanks Nate! Hope you like it.

I'll take a look at that in the next update. Good stuff to hear. Thanks for the suggestion. Peter

I just finished a new free rocketry tool. It's available in the Google Play store now, and will be on the Apple Appstore once it's approved. https://play.google.com/store/apps/details?id=com.gmail.pstanley002.drift_distance_calc&hl=en This calculates drift distance, based on given altitude...

I added the Aerotech DMS motors in the last update, posted on 8/20/14. Yesterday I noticed an issue with the DMS K and L motors. I submitted an update last night to fix this. It'll be available as soon as Apple approves. Sorry for the mess-up. Peter

I was going to discard this the other day, as all the candy had been eaten. I thought it might make an interesting oddroc. Has anyone built anything with one of these? Also, I'm not sure which end will be up if I make it. The heart at the top would look good. The heart at the bottom would...

If you're a current or potential user of Rocket Calculator, please take a moment to fill out this brief survey, https://www.surveymonkey.com/s/C72CBDG. I'm working on a new, cross-platform version, and need your input. Thank you for your time. Peter

Albright and Nail knots are great for lines of unequal diameter. Either of those might be a good solution. Peter

Just got mine today. It looks easy enough to use. I'll need to make a note of the turn on/record/save/turn off sequence while it's fresh on my mind, or else I'll forget at the field. It feels a little heavier than the keychain cam, but I do like the slim profile and ability to plug directly into...

The estimated delivery on mine is showing the 26th. Maybe it'll be here sooner than that.

I just ordered one too. I'll compare notes with you after mine gets here.

Has anyone tried one of USB flash drive cameras sold on eBay? They have the same profile as a thumb drive, with the camera pointing out one end, which makes it ideal. I've used the keychain cameras with good success, and I think this is probably the same thing, or similar. It does have motion...

Here's a rocket I made with a 2" mail tube and a plastic kids meal toy. It has a dual 24mm motor mount. I called it Cloudy with a Chance of Turbulence. The wrap was made with white adhesive paper that I printed clouds onto.

I think support for data acquisition at the field is key. It looks like that's where you're headed, based on the screenshot you shared. I can't wait to see what you come out with!

Zipfizz containers work well. I've seen them at Sams Club in packs of 20. There's a picture of one in this post https://www.rocketryforum.com/showthread.php?31050-Containers-for-small-quantities-of-BP-(Black-Powder)