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Answered my own question!!! Found manufacturer recommended max lift off wieght for a D-12 is 396.2 grams (slightly under 14 OZ.)GOOD TO GO!!!! 8)

So I spent a couple of hours on rock sim today. The sim says its stable, and thats with a 50% longer body. The rocket will wiegh in between 11-12 OZ. about 3.5-4 OZ. heavier with the 4th stage and…   Read more»

Absolutely, the flight I described before was traveling horizontal by the time the last stage went off. It was so small though, no harm, no foul, just cute.Doug

Doug – If you ever call one of my projects “cute”, I may have to retire from rocketry :PThe problem I see with doing more and more stages the same as concerns I have when I plan for longburners. If…   Read more»

Scott, it’s all about having enough thrust at each stage and continued stability. Remember your center of pressure (CP) must be at least one body tube diameter below the center of gravity. Okay, we all know that. Sim the rocket,…   Read more»

Has any one done 5 stages?Yes. I saw a tiny model rocket that flew four stages of A10’s each and then an A3 I think. All I remember was, Pop, Pop, Pop, Pop, and Whoosh. Kind of cute actually.Doug

Scott, it’s all about having enough thrust at each stage and continued stability. Remember your center of pressure (CP) must be at least one body tube diameter below the center of gravity. Okay, we all know that. Sim the rocket,…   Read more»

Tim stocks a very limited supply of GLR products aside from the stuff most readily purchased at launches – motors, shock cord, quick links, cheaper building supplies. If you want honeycomb composite, custom or stock fins, significant airframe or nosecones…   Read more»

Or you can contact Tim here on this board or by PM. Bryan’s email can be linked to from his site at http://www.therocketgarden.com/

For Giant Leap, best thing to do is call GLR and talk to Kent and then tell him to ship the stuff to Tim Thomas for delivery.Warren

Does anybody have either Tims or Bryans Local Numbers? I would rather get stuff localy first. Ill order parts on line if I have to.

I’ve been boycotting HobbyTown since they fired Joe.

There is a Hobbytown in Westminster that has some PML and LOC parts.Warren

Tim Thomas, aka Lawndartman, usually has or can get everything under the sun. He’s at nearly every launch. Also, Bryan Penfold of the Rocket Garden is a local guys who gets me alot of my scratch parts. Tim is Giant…   Read more»

Ken – I have 2 24mm reloads casings (maybe 3?). You are welcome to borrow them. Let me know which launch so I don’t forget to bring them.

Thermalite sounds about like what you’d need for that 2-stager “hard to light” project!I’m still interested in experimenting with igniting a E6 with a mini-A, but only after I get the Parrots back in stock (hopefully by the end of…   Read more»

How hard is to get Thermite? Sounds like good stuff.

Thermalite sounds about like what you’d need for that 2-stager “hard to light” project! :DKen

Tim,Sounds like Plan A might just be back on line. In my case, I don’t want the central to light the outboards, but I think we could shield the dipped ematch/Thermalite combo with basic masking tape. The ematch lines would…   Read more»

He means Thermalite – looks kinda like cannon fuse with a thin wire core. Was used for ages as an igniter booster. Now highly regulated.Thermite is a different material – usually mixed to order from powdered metal and metal oxides….   Read more»

How hard is to get Thermite? Sounds like good stuff.