Activity

Ha! I have it transfered to VHS, but I should still have it on the camera’s tape. I also blew up a PVC rocket stand I made. Just 2 grams. Parts fly everywhere! Only time I ever singed a chute……   Read more»

Here is a link to a charge test that I did indoors. Nothing like impaling a car but it did scare the crap out of us. It’s a large file, about 11M but it shows a 2.0 gm charge in…   Read more»

8) Scott, you should ask Bruce to show you his ground test video As I recall he shot his nosecone thru a fence, nailed a cat, and ended up in a “82 Honda!! 😯 Or something like that. Truely…   Read more»

8) Scott, you should ask Bruce to show you his ground test video As I recall he shot his nosecone thru a fence, nailed a cat, and ended up in a “82 Honda!! 😯 Or something like that. Truely…   Read more»

Try using an ejection charge calculator for an initial estimate to ground test with//www.info-central.org/recovery_powder.shtmlI had a 3″ rocket come in hard because there was not enough charge to push the laundry out even though is was the amount included in…   Read more»

I wonder if I blew the side out of the rocket?It was fairly cold and the air frame was plastic.ScotteIf you used 4 or 5 grams of 4F black power in a Quantum Tube, you almost assuredly blew it up….   Read more»

Try using an ejection charge calculator for an initial estimate to ground test with//www.info-central.org/recovery_powder.shtmlI had a 3″ rocket come in hard because there was not enough charge to push the laundry out even though is was the amount included in…   Read more»

I think it also depends on how tightly you pack the bp. If the bp is loosely packed it will burn more slowly expending it’s force over a short duration of time. However if it is packed tightly maybe with…   Read more»

I wonder if I blew the side out of the rocket?It was fairly cold and the air frame was plastic.ScotteIf you used 4 or 5 grams of 4F black power in a Quantum Tube, you almost assuredly blew it up….   Read more»

For a 3″ tube, 1.3-2 grams should do it. Although I DID blow a phenolic tube up with 2 grams! Better a little more than not enough. But there are limits.I wonder if I blew the side out of the…   Read more»

For a 3″ tube, 1.3-2 grams should do it. Although I DID blow a phenolic tube up with 2 grams! Better a little more than not enough. But there are limits.

OOPSI guess it says 0.4 to 0.5 grams One and a half should have been enough 8)

The book recomends 4 to 5 grams of powder for a 3″ tube …… Any body have any coments fo powder charges????????????Yes. Two words: “Ground Test”.Also, you can bet your lunch that 5g of FFFF powder is way, way, way,…   Read more»

The book recomends 4 to 5 grams of powder for a 3″ tube …… Any body have any coments fo powder charges????????????Yes. Two words: “Ground Test”.Also, you can bet your lunch that 5g of FFFF powder is way, way, way,…   Read more»

Tim is the local rep for Giant Leap Rocketry. http://www.giantleaprocketry.com, currently the largest HPR dealer in the country.Warren

Scott, what Conway said regarding the epoxy, I prefer Aeropoxy–1) because it works for me, 2) because buying it supports one of our vendors (Tim), others prefer one of the other two. All are good and do the job for…   Read more»

Hey, With that Dinner in mind that we did last year….. Dave and I are putting together the next one I will be needing volunteers for some small jobs…. With what we have planned it should be fun and funny….   Read more»

Well, my good friend, I stand (or sit) corrected. We are both married to exceptional women. As is James, from last years Colorado Rocketry dinner, put together by Dave2. Can’t wait to see who’s honored next. Although we all must…   Read more»

And I did tell my wife about next year’s rocket. She shrugged and said I had to get something else accomplished before I started “playing with it.” No other women would put up with a rocket guy like me! …   Read more»

Scott, what Conway said regarding the epoxy, I prefer Aeropoxy–1) because it works for me, 2) because buying it supports one of our vendors (Tim), others prefer one of the other two. All are good and do the job for…   Read more»