LOL nevermind I see its HEDD now. Debating what my next M would be and Red Line's sure are cool.

i bought Modern High-Power Rocketry 2 di Mark Canepa

Not required on the K375, afaik, just a good idea. I always bond grains to the liner with Elmers Glue All Max following AT’s instructions for the other motors that call for liner bonding. Make sure you put the Warp 9 grain in the right place (at the nozzle)!

@@GBIVthanks!

Absolutely, it flies great on AeroTech F and G composite motors.

Absolutely. It will do fine built stock on lower thrust/impulse AP motors. With a little reinforcement (plywood fins) I've flown mine on Hs.

@@GBIV Thanks. I ordered the 24 to 29 mm adapter. Newbie for the modern, vet for the old school rockets. 👍

​@Workerbee-zy5nx I'm building this for/with my daughter. Putting the Estes camera on it. I work in aerospace so it's go big or go home. I made the typical plywood fin and motor tube ring upgrade. However I went a few steps further. When assembling motor tube/rings: Use a upgraded motor ring as your top ring in standard location. Use a provided cardboard ring down from that about 2" to help support the body tube. Use a upgraded ring just ahead of the fin slot so when you insert the fin, it butts up against it. Use a provided cardboard ring just behind the fin butt up against it to reinforce the rear of the fin. Use a upgraded ring for the bottom ring. Keeping it pressed in the same thickness as the cardboard ring. Insert last cardboard ring set perfectly flush with the bottom of the main body tube like ussual. This adds negligible weight and makes it way stronger and long lasting.

@@brandonbentley5453 Thanks Mr. Bently. Definitely needs a modification to fly tho high performance motors.🤠👍

Congrats, Karl!

I use the Apogee Simple Tracker for almost all my flights now. I’ve sent it over 32k’ up and landed up to 5 miles away a couple times, it always works well for me.

@@GBIV Good to know thanks for that.

Just fiberglass. No tip-to-tip. Hysol epoxy for the win!

Redundant M/W RRC3 altimeters for the booster apogee/main (cable cutter) deployments, one of these also handled the timed stage separation charge on the AUX channel. Altus Metrum Easy Mini in the sustainer (with an RRC3 backup). Apogee Simple Timer to ignite the sustainer (with a tip/tilt lockout).

Thanks, Jim! We still fly the spinner missile and think of you! :)

Modern High-Power Rocketry 2 by Mark Canepa is good, if a little dated. Read every tutorial or build thread by Jim Hendrickson (blackjack2564) on The Rocketry Forum!

Special setting is MSPaint. ;) I looked up the speed of sound at the altitude of motor burnout and determined Mach number. Then typed it on a screenshot from mDACS.

@@GBIV Thanks, I thought there might be a special technique! Greg W.

Onboard camera is a RunCam2 4K

Yes, I use a 42” ultralight Spherachute packed in the nose cone. Two #2-56 shear pins used for both apogee and main events.

Pretty close! Usually 1.1 and 1.5gr.

I easily fit a 66” Ultralight Spherachute in the 3” NC. A 72” UL would fit! Spherachutes ULs are great chutes, they are all I use now.

Yes! Apogee charges (2!!) are packed tightly at the bottom of long, barrel-like charge cups. Match on top of the powder, dog barf on top of that. Taped and hot glued over the top. Ematch wire held in place with tape and hot glue too.

Thank you for the details. It's very helpful.