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I'm selling all of the remaining commercial hardware inventory of Alpha Hybrids. While I still design and develop hybrid motors, I'd much rather see these items used instead of taking up shelf space. To fly these will take making/finding/buying a couple parts. And while the *entire inventory*...

38mm SkyRipper Systems Complete Motor System 38/180 motor: 15.9" long motor case with thrust ring 38/220 motor:20.25" long motor case with thrust ring 38/400 motor: 28" long motor case with thrust ring 38/580 motor: 35.9" long motor case with thrust ring 38mm System: All three motor tubes three...

Does anyone use some of the slower burning magnum rifle powders for gas generation? I have a recovery application where I need (relatively) slow gas generation. I've tried Goex Cannon and it still burns faster than I'd like. If I can't find a slower powder I'll likely transition to CO2. Edward

I have a Garmin Astro 220 tracker and DC20 collar that I'm selling. It has worked amazing. I've used it ~20 times to recover rockets. I've never lost a rocket with this setup. Works for 2.5" rockets and larger. I have a wire antenna in addition to the rubber duck as well as the external...

Does anyone have any experience shearing rail buttons off on purpose? I was thinking using nylon machine screws to hold them to my rocket and then two hose clamps at the top of the rail to remove the rail buttons. I would score the nylon machine screws at the rail buttons/airframe joint so...

The IREC team I'm working with, well, they just cobble together things and I'm not comfortable with the amount of safety built into their system. They had multiple pieces of speaker wire run from the test stand to their command center, probably 18 gauge. They used the old trusty touch the...

For a motor system I developed some 3/8" nylon exploding bolts. They are 2" long and use a regular e-match and 0.25 grams BP to separate. They are threaded for a 1/4-20 plug to keep everything in. they are 2" total length under the head, with 1" of that threaded. In my testing I they failed...

I've had some interest in the remaining stock of pre-filled hybrid hardware that I have. I looked through what I have an have posted a picture below. I realized that while I have the cases, nozzle, splash collars, forward closures and tanks I do not have the adapters or injectors. I also have...

All, I have a quantity of teflon powder that I'm selling. Prices do not include shipping. Zip Code 80525 1 pound = $15 5 pounds = $60 10 pounds = $100 It is a great dry lubricant and has uses in rocketry as well. The specification sheet that I have gives the following particle...

A long time ago in another epoch of HPR, there was an article on something called the Z-Pard. Essentially an aluminum piston recover device using BP. Advantages were very reliable operation, less BP used, you don't have to pressurize the entire recovery compartment and positive deployment...

I have a Masonite rotafoil parachute pattern. It is a single piece, no gores needed. I use it on 3 pound rockets. I'm local to Colorado, if anyone is interested. Here is a picture: Edward

Looking for a RATTWorks Tribrid. Edward

I was sewing a parachute the other day (192" diameter) and because of the size I am using a larger shroud line. I have a Singer sewing machine with a corded foot, but this cord is 3/32" diameter and definitely won't fit through that foot. Our library has a 3D printer that you can print on...

After looking at the hybrid market the past few years, coupled with general decline in hybrid motors Alpha Hybrids will be publishing all their design drawings and research over the course of this year. Edward

I have a 2.25" OD x .125 wall research motor that I have never used but is just taking up space. Specifications are as follows: 14 15/16" long casing, 11 15/16" propellant length. Has a forward closure tapped for 1/8 NPT for pressure reading. Blank nozzle and nozzle washer. Uses T188...

All, I'm cleaning out my garage and have been storing these tanks for 2 years w/o using them. I'd like to get rid of them. All at one time where oxygen cleaned, but have been stored for 2 years. I would recommend cleaning them again and getting them hydrotested if needed. I used them...

I thought I'd start a thread as a reference to other fliers on how much nitrous it takes to fill certain hybrid motors from. RATT M900 20 pound tank, 15 pounds in tank. Static tank pressure, 800 psi. Pressuring during fill, 750 psi. 7.52 pounds of nitrous used to fill motor in~90 seconds...

I found a tree in a neighborhood that I'd like to plant in my backyard. No one I know knows what it is. Anyone want to play guess this tree? Also - it is growing in Colorado. Thank you! Edward

I have ten (10) 96" Toroidal Parachutes that I'm selling. I had a contract to make them for a local company and then their contract got cancelled. These chutes are not yet made, but I have them all cut out. They will be ready March to mid-March. The colors are red, white and blue and 1.5...

I'm not on the TRA list, I left due to the signal/noise ratio, but I couldn't find anything on the TRA website. I made a servo actuated valve from the plans at https://www.rocketmoonlighting.com/valves and wondered how they would be classified under TRA rules. I know they would be a research...