edward

CD Fasteners has 1/4"-20 eye nuts in stock. I've bought all of mine from them. They aren't stainless but should be more than sufficient enough for rocketry use. Edward

Have you tried CD Fasteners in Fort Collins? I have gotten a variety of nylon materials there. If that fails try McMaster Carr There is really no need for a line cutter to cut kevlar. I use it to ...

My cutter went poof when I tried to cut even the thinnest of kevlar. I use them in tandem to cut through the zip ties - that way I have a backup. My only reasoning for using a 1/4" nylon plug vs epo...

I can give you a few tips on something similar to the bolts. I built a parachute reefing/ line cutter mechanism off of something that Tony A. posted. Post #27 is a picture of what I have. It is 1/2"...

If you want to bore and then tap them a lathe would be perfect. A simple easy operation. Grooving the outside on a lathe would also be repeatable. Edward

From what I remember about the bolts, the more crudely they were drilled the better. A lathe was the least preferable tool to use to bore them out. Edward

Steve, Take a look at this chart - and let me know what looks in range. That way I can plan accordingly with fabric. Edward

Any idea on the finished weight yet? That way I can start calculating the parachute size(s). I'll need at least 4 weeks lead time to make them. Edward

I went to the Newark factory once off I-225 and I-70, southwest corner. I walked right in, bought a couple sample tubes, walked out. Must have changed policy. Edward

Rough Estimate without quotes - Case - $30Closure - $10Nozzle -$30Snap Rings/Nozzle Washer/Thrust Ring - $15 $85 materials. If you want it turned to 75mm instead of true 3.00" it would be ~$1 per inch...

54mm is the one size that is more economical to buy the casings. You will get much more interchangeability with drawn 2.125 x .095 wall tubing than you will turning a bunch of pipe for 54mm. That is ...

Steve - would you consider a 4.5" N motor? A little longer burn than 4", but not in the range of 6" hardware yet. I'd very much like to be part of the project, but time is shorter now than during the...

If a pound of lead and steel are going the same speed, the energy is the same. The lead will just take up a smaller volume. I guess you could stay potential energy density is higher. Edward

I've got a chute that is drastically more efficient than flat chutes - by almost 2 times. Once you get a final weight let me know - I'm sure we could cut it down to just one very large chute. Edward

Since this will be a research flight with the O-motor - are you looking at doing research motors for everything else? If you want to do the 75mm 2/3 grain motors I could volunteer the machining if the...