edward

Did your friend get compensated or own the mineral rights. A friend of a friend in North Dakota leased the mineral rights to an oil company. He's now set. Edward

You could use a very porous drogue - on my L3 I used a 36" parachute with a 18" hole in the center 🙂 Landed near the 3rd windmill. Edward

I saw the oil rig from one of the satellite imaging sites this week. With the gusher of a well that was drilled last year near Grover a lot of small oil exploration companies are getting out there an...

On a slightly bigger rocket (volume wise) I used 1 gram for the drogue and then 2 grams for the main. Edward

18 PSI? STP is ~14.7 PSI. To have a difference of 18 PSI you'd have to either be sucking quite a bit or blowing really hard. Edward Sarcasm aside: Atmospheric Pressure at 5,000' is ~12.2 PSI, at 30,...

Shear pins + a vent hole. On my L3 I had an issue of the main decided to leave at drogue deployment so I had to ground test quite a bit. I ended up with 6-32 shear pins and a 1/16" vent hole. I woul...

Yes, and you don't glue every motor together - just the ones that explicitly say in the instructions. Doing otherwise isn't going to get the intended result. Edward

Slightly off topic - will NCR have the big nitrous tank at MHM? Edward

That is basically what the o-rings in my design are doing. I add about .25" total length to my e-bay for having two o-rings added on. I also chose o-rings because they are available in many sizes. E...

What are your tolerances on the other rings? 1/4" o-ring is very very big and is much harder to compress. I have made a 3" version where the o-ring was a -232 (3.012 x .139 x 2.734) For that one I w...

I'm looking for about 6" of 29mm and 38mm couplers. I thought I had some but I've got the regular tubing. Thanks! Edward

Well nuts OR Nut serts Edward

It has rained about .8" here in Fort Collins, but we'll need several more days of rain like this if we want to lessen the fire danger. It only takes a single day of wind to erase and entire day of ra...

Here is a .pdf of my design. I've crumpled a 3" tube using my car to pull against it and it didn't slip 🙂 Also - you can bulge fiberglass tube if you don't size the caps right and compress them too ...

What is on the other side of your all thread? I find for short lengths (<1" long) I trust inset hex set screws. You can tighten them down with an allen wrench and then screw what you want on...