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I've used Aerotech seal disks on 4 different L2375s, albeit in CTI 75-4G casings, not Aerotech hardware. The seal disk is considerably thicker than CTI's forward insulator, so to reduce the gap between the closures and casing, I sanded down just a few milimeters of each propellant grain face...

These items have all been sold!

Motors and Mini Switch have been claimed, sale pending funds.

You might be better off purchasing this directly from Eggtimer, but if you'd still like to pay shipping, please send me a PM, and we can make that happen!

I'm selling a few things to be picked up at Airfest in September: (2) Aerotech H reloads I bought earlier this year but won't end up needing, and an unassembled Eggtimer Mini Switch kit. (1) Aerotech H128W-14A: $25 (1) Aerotech H148R-14A: $30 Or take both for $50 (1) Eggtimer Mini Switch...

PM sent

Update here: I used a combination of 036 O-rings (1/16" thick instead of 3/32" thick), and gently sanded the face of one grain with 120 grit sandpaper. Not the fastest process, but the seal disk did fit thereafter. Upon assembling the motors, there was a slight gap between the aft closure and...

Thanks so much for the replies. I'm looking into thinner O-rings now, and I'll see about sanding off just enough to get the grains to fit that way too. Much appreciated!

Hello TRF, Last year I flew a CTI N5800 reload and had part of the casing bulge out after firing, right around the forward insulating plate. To help mitigate this happening in the future, I was told an Aerotech forward seal disk with the appropriate O-ring can be used in place of the...

Doesn't look like it. My LDRS aft closure has the splotches there too.

I sent a PM on the 38/240 case last night, just wanted to confirm you saw it. Thanks!

Greens might be the most notoriously difficult to light. I launched a CTI L645G at LDRS where it lit the igniter and smouldered for 4 seconds before taking off. My first 2 multistage flights were this summer, and to facilitate sustainer ignition, I actually prefer air-starting Aerotech RMS...

Received mine this morning. Thanks so much, I appreciate you sending everything out!

I'm in the same boat. I don't believe mine has shipped yet either.

PM sent about the 38/1320 and 38/720 motor set.

Bob, does that mean spectators will be limited to walking within that parking area north of 80th, or will they park there and then be allowed to walk into the flyer area of the Pasture?

Have used it with an M1500 in a 98mm MMT. It wasn't a particularly aggressive flight, but it held up great.

Wet wipes are great for pretty much all the motor hardware. I start with those to get most of the gunk, and then follow up with a motor cleaning brush from Chris' (https://csrocketry.com/rocket-motors/motor-cleaning-brushes.html) with a cheap microfiber cloth ($1 from Walmart for 2) around the...

Revolution Aerospace is working to make liquids for amateur users as a COTS system on methanol and nitrous oxide. Their primary source of updates are from Reddit, but this post was pretty insightful. Hopefully they can make it safe and reasonably affordable.

I got some QuickDip pyrogen (QuickBurst) in the mail this weekend, so I wanted to try out a few configurations for airstarting Aerotech motors. The final 3 igniters are in a small cardboard tube that I coated the inside with QuickDip to simulate "painting" the upper grain core with the pyrogen...