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I tried a CHAD staged one a d12-0 to an e9. It didn't work too well. I woulc suggest only adding a BT section and a single CD. That way when the separation occurs, the -0 motor will just "parachute" back with the single CD and the Single CD should solve the stability issues on initial boost...

The other name for Cabosil is "fumed silica". There is no magic bullet. For layup joints, it's basically raw epoxy unless you want to make sure it doesn't "run", then you use a little fumed silica (Cabosil). For filets, if you want sandabile, use microballons, if doing a filet, use...

This is the coolest rocket I've flown on the Estes E9's. I just love those motors anyway, nice long burn. It puts this spool straight up to about 100-200'. The spool is nothing special. Take a BT-50 Tube, and put an E9 in it. Now leave about 1/4 to 3/8 of the E9 exposed and allow another 1"...

I'm not sure if this topic is Kosher with the owners of this list (please let me know if not and I'll delete), but there is an opportunity for anyone with in the Orangeburg, SC vicinity to take the DPS ThunderFlame EX class on Friday, Nov 7th. Jim Mitchell is coming down to the Orangeburg Nov...

It went 12,500' and 1.5 mach at about 2 seconds into the launch. While I didn't have my RDAS in it, It simmed to almost exactly that altitude so it would have required that acceleration/velocity to have attained that height. It was a very cool flight. I've got a new one on the board, will...

Excellent Job so far, Can I offer a couple of suggestions? Epoxy with no filler is almost a weak as just plain glue. Get yourself some "cabosil" it goes by lots of names, but that's the generic name. Always use the thinest epoxy you have available and mix in a little cabosil till you get...

Ah, I hate it when this happens... Thanks for clarifiying that make more sense. Alan

From the email that I just recieved the MC2 Launch this weekend has been cancelled. Alan

I have to pass along my perfectflite story, in a word, they are AWESOME and so is the company. I flew two in my L3 rocket at LDRS, on my EX flight the rocket flat spun all the way to the ground. Didn't really hurt the Alts, but did put a little flat spot on the capacitors that allow the unit...

Guys if we are talking about the Launch at Manchester, TN. It might be off. The re-seeding is going to start early. Check their website and make sure, right now I'd say it's 70/30 no happening, but there is still a slight chance, but at a very small section of the field and recovery will not...

Wow, 1.5 cap fulls. unless you and i have different sized caps, that would be about 5G in my case... You have answered my basic question and Carl hit the rook cause on the head. I have been using all the calculators and even the ones that predict shearpin numbers for a given amount of BP...

I'm curious, how much BP do you use in say a 12" 5.5 deployment area?

Anyone used them on a MD rocket. I've got a 38mm MD on the table and I'd like to use guides instead of tubes for guidance. Every time I've seen anyone use these things and only use the two sided tape to retain them, they fall off on the pad or something. I'm thinking two ways. a) use...

The problem that I find with fill and finish is the waterbased nature of it. I've used it to fill tube seams and fins and even when you glass over them. On a Hot day, the moisture that is trapped in the product will cause the material to bulge, I can take a rocket that the seams were filled...

Woah, let's make sure we are talking apples to apples hear. If doing the double glue with epoxy, use a slow setting version at least 30 mins, and I know of no way to do the double glue on CR's. Take a stick and put a ring of epoxy in the tube lower (on the side you'll be inserting the MMT with...

Doug, as a point of reference, the Pro's have a graphite nozzle to, however, they are much smaller inserts than a full nozzle. They shouldn't errode that much and as for a graphite nozzle in an AMW, they errode too, you'll get around 6-8 flights out of one before the KN drops and performance...

I may have missed it in the post, but what are you using the clay for. For filets, I use PC7 epoxy paste that you can get from ACE Hardware. To smooth it, you just get out your bottle of rubbing alcohol and put some on your finger and it will just slip all over the stuff until the alcohol...

One other comment. E9's are just downright dangerous. You get a false sense of security thinking you have an E motor. But remember, you have 5-6 seconds of burn time and very little thrust! That's why it's any E. While it was hard to tell scale from the single picture, I would say, that...

Oh, trust me I do understand. But please be sensative to the request. for 5 motors in a 38mm rocket at what dealers have to pay that could be 100-150 dollars. At the margins that they get on motors, you'd have to sell abunch of motors to make just that lost margin back and that doesn't...

Can I ask.... Why Do you need a sponsor? If you are going to build a rocket like that, then afford the motors yourself. It sorta bugs me (can't ya tell), that people expect the dealers to fund their launches (they don't get the motors for free, in fact, in the case of AT, not even for much of...