Cluster Choice?

A USR brand 54mm mount is also an Interchange Mount -tm for these:

Quicker build, but also quicker flight preps. A 3 motor cluster is also (probably?) more reliable than a 7 motor shot.

at those prices I'd fly it 10 times on 1x C6-3 and fly to the US with the money I saved and buy more motors, cheap. wow, motors are expensive in Australia!!

Morning CJC, I have a number of (1x24 + 6x18) clusters and they are definitely a crowd pleaser. Best thing if you can fly them on a number of different configurations. 1 C12-3 A8-x (for my rocket weight) this provides a quick burn and low flight. Then again 6 C6-3s & an central E is quite impressive.

-cat

CJC-

Fat Boys are cheap enough, so buy a few and build ALL OF THEM!!!

...working on a two-stage Fat Boy myself.

I saw some 2 stage fat boy launches last week. They were fun. Clustered boost and single upper.

Jerry

Australian currency is less valuable too, by something like 1/3+.

I'd go with the 6x18mm + 1x24mm. It fits *really* well in a BT-80, especially if you bring 3x0.125" thick plywood fins to the 24mm motor mount. That's how my "Mongol Horde" is built. I have been very successful launching it on a D12-5 or D12-7, and three each of C6-5 and C6-7 motors. I almost always get all 7 to light, but occasionally get only 6.

The reason for the mixed delays? A 5-second delay is just about perfect, but having 7 ejection charges going off at once is a "bad thing" in a tube this thin. Even with the extra-long delays on about half the motors, I still made sure to coat the inside of the tube with thin CA for durability. Despite these precautions, I still get paint bubbling on occasion at the forward end of the motor mount.

Have fun!

- Rick "Estes F power, and launchable with Notification" Dickinson

Just had my first experience with that. Paid $41 US to get a product from OZ, instead of 70-80 to buy it here in the USA. Shipping was only $4 Aus. And that's for something made in Europe! Only difference from what I bought here was the package specs were in KG instead of LBS.

I've bought several region 1 DVDs from Canada for less than the US prices, but just bought a Canadian DVD from Florida to get the best price on it!

Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD" >>> To reply, remove the TRABoD!

I too prefer cluster configurations that give flexibility. When I built my Super Ranger, I slightly compromised scale by going with 4x24mm instead of

My favorite cluster rocket is another NIRA members "D80". He mis-heard someone say G80, and asked "What's a D80?", then built one. It's a cluster of EIGHT A10-3Ts, and takes off in a hugh cloud of fire and smoke. I've got this idea bouncing around my "Round Tuit" list that will be a cluster of 12 A10-3Ts...

Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD" >>> To reply, remove the TRABoD!

I always thought it would be neat to cluster an E9 or F10 with a ring of A10-P's to give a bird that leaps off the pad, then soars gracefully to altitude.

Getting everything lit at the right times is probably the trickiest part.

Or just use a G8.

Good call. It helps. If you're worried about a high number ejections you can use plugged engines in a few or maybe even ca some heavy duty freezer foil to the entire inside of the bt.

Randy

you mean, an uncertified, illegally manufactured, illegally transported G8?

No.

Then why did you suggest using a motor that is unavailable or nonexistent?

Thanks guys! Ok....here's my current plans for some kits I picked up last week.......

I have just ordered some more 24 & 18mm tubes. LOTS :-) A few couplers, some nylon chutes, more Kevlar line & blankets, all in different sizes..........AND another FatBoy!!!

I thought I had enough tubing left but I've used up most of the left over supplies I have from a few yrs ago. Nice fresh stuff coming :-) I'll follow my usual course of action and ditch the balsa fins and card C-Rings. Replace with ply.

With the peice of 24mm tube I got left........that'll get cut in half & go in the Patriot & a Baby Bertha. I'll knock up an 18mm MMT adapter to use with them aswell.

I have to do both a 3x24 & a 24+6x18 FatBoy. They look so cool in RSim 3D with all dem motors! The 7 motor Fatboy will be the most clustered rocket I've ever done. Gotta keep advancing :-)

I got a free Phoenix kit from the hobby shop with the order... :-) Someone had stolen all the recovery gear & MMT out of it. Crazy man? Has the NC, 2 BT80's, Coupler, Decals, Fins & instructions.

I'll single layer glass it or fill it with couplers and put a 29mm MMT in. May do a 4x24 or 24+4x18 deal. The cluster bug has bitten......sorry...

The Canadian Arrow is getting a 29mm MMT.

I'm sure I read a post somewhere and they cut up a beer can....sorry...coke can...for tube protection..