edward

Which hits harder - a pound of lead or a pound of steel? Edward

Tom, You've chosen the one size that is better to buy than to have machined. 54mm tube is 2.125 x .095" wall. It used to be a standard size but is not found much outside of 5000'+ mill runs. This i...

I could turn cases up to 98mm and ~30" in length for you. I'll need a bit of lead time though. Edward

You could just buy a piece of lead and turn it in the shape of a nosecone 🙂 Edward

Newark Tubes in Denver makes some very large tubes. There are definitely better brands out there than Sono that keep better tolerances. Or almost as cheap you can go to Yazoo Mills and they'll make ...

I remember talking to Mark L. and John B. after the Nike Project and after it was done, they said they'd settle into some standard tubing because it eliminates a lot of work and increases consistency....

An L3 rocket is a lot simpler than a rocket of this scale. Once you get to this size the up part isn't the hardest, it is the down part. Ask Kevin Trojanowski about big projects. They design them a...

I believe if the Delta II was flown again there was talk of using the club's system to ignite the center motor. Then use on-board timers with pull wires for the outboards. That way the center motor ...

This one detects liftoff by using a novel g-switch. Then when that turns off it starts a timer then lights the motor after that. I'd set it for maybe 1-2 seconds after burnout, that way it lights th...

i've got an adept stager that you could use. Edward

2020 rail uses 1010 size buttons. It is the same as putting four 1010 rails together in a square. Rail buttons aren't a limiting factor. For Unistrut you just use doorknobs. Edward

You can make a swing-set like top guy wire doohickey. I fly off the 16' rail when my hybrids go slower. The key is not needing the 16' 🙂 Edward

I've flown off of the 1020 rails a lot at NCR. I think they are on Mark L.'s big pad. The only thing is it sways a lot at the top. Edward

I'm much more a fan of the 1020 rails - they are 1" wide and 2" deep. Gives you more rigidity in one direction. They also have 2020 rail that is very nice, but the key with any rail is having a good...

Smash, Very nice looking project! I still mark the Delta II as one of the best rocketry experiences I've had. Life has gotten busy on me and I don't do as much as I'd like anymore in rocketry. Need...