edward

Does beveling the root of the fin at a 45 degree help to bond it at all - seems like the increase in surface area would help with the epoxy. I know it helped immensely with my aluminum fins to alumin...

I thought John was crazy when he suggested I use a 25 second mach delay for my L3. Turns out that it worked perfectly. As for shear pins, I generally use them on all my rockets - 2-56 is my standard....

I set the Mach delay for rockets going better than 200 mph. I use the time the sim says until the rocket has decelerated to ~.5 Mach. This can be quite long sometimes. I do not trust Rocksim - I go w...

The rocket rage clones I use I have a calculated Cd of 1.9, but I generally use 1.8 to be conservative. Edward

semi-ellipsoidal are very efficient but I think the packing depends a lot on the material. I have a 60" rocket rage clone that holds 15 pounds at 15 fps. I can pack it into 8" of 2.5" airframe very ...

Anyone going? If so I could probably send you some Alpha Hybrids motors for you to fly 🙂 Edward

John - will this be the stuff that I almost borrowed of yours for my L3? If so it would be awesome to have some local. Go with knots - I've seen kevlar sewn loops come apart under energetic events. E...

I guess there goes my hopes of certifying some hybrid sparkies 🙂 Edward

Pistons defintely are the way to go, I've switched and won't go back. I still use a chute protector to help me pack the chute into the piston and make it nice and neat. Edward

How many would you want? Edward

Would anyone be interested in 3" paper tubes and 3" full length couplers? I have quite a few and could let them go for $10 total for a 3 x 34" airframe + 34" coupler. I also have 54mm & 29mm mot...

It is a rocketry club and different things float different people's boats. I loved Doug G's sparky slo mo videos and the big smokey sam's are great to. I say fly what makes you happy! Edward

I could see that, however on my first L3 attempt my main went off while the rocket was still going about 300 mph and the nosecone came off and the parachute came out, making a mess of things. Edward

I crashed my first L1 rocket even after ground testing deployed the parachute perfectly twice! After that I switched to pistons and have been a very very happy camper. My friend Henry (Hahn) came up ...

Oh no! What's up? did you figure out why the chute didn't extract itself? Edward