Activity

I’m getting a brand new CTI dual thrust M motor – it has one grain of Vmax and 4 of Imax, IIRC. It should give 1 second at 600lbf, followed by 4 seconds at 250lbf. Should be a lot of…   Read more»

Isn’t it the I65 8+ seconds of burn very cool.

I guess the N1000 16 second burn will be twice as cool 😯

What!!! N1000!I feel it may be time to build an new extention to a 98mm rocket!

I was thinking you might be headed to Balls instead of visiting with your club here.I was planning on going until I ran out of reasons to go. Pulling the trailer twice as far mostly to watch others fly sort…   Read more»

YES! I was thinking you might be headed to Balls instead of visiting with your club here.

You betcha!

Good, I hope to fly mine in BDCR at OF.

NOW we’re talkin’!

Good, I hope to fly mine in BDCR at OF.Doug

Absolutely 😀

Isn’t it the I65 8+ seconds of burn very cool.

I guess the N1000 16 second burn will be twice as cool 😯

I have been told that a manufacturer-approved tapered aft closure/nozzle is available for 38mm reloads on request; they start with a standard closure/nozzle and turn it down.Here’s the thread for the I350, it’s kinda new, but it seems like a…   Read more»

Isn’t it the I65 8+ seconds of burn very cool. To bad its 54mm thoughCount me in for L3 on Sunday

Adrian, will CTI mold special reloads with the tapered aft ends? IIRC those are all 38mm reloads, which of course do not use a separate aft ring – the rear closure is molded with the reload itself, and of course…   Read more»

You mean the AT350? It’s been out for awhile. The new full I from CTI (I216) should beat it, though, if you don’t mind the lack of a forward closure.Speaking of which, I want two of those (I216) with a…   Read more»

Tim, there is a rumor that there is a new single-use, full “I” motor out there. I’m sure Adrian and I are both interested 8) I won’t fly this at Oktoberfest, but would like to get the order in….

I need a CTI H160 29mm. I also need some extra eyes to track my minimum diameter rocket sail to 10,000’+Chad Moore

Tim I will need two- I350SS .Others You always have.

mrtidy I sent you a PM.

Interesting. Regardless of how fast a powder burns uncontained, how it’s packed, how much it’s milled (particle size), etc., you never really know how it’ll perform until you test it in a moter. Great data! Thanks!

Yes! I tested them at 3 different KN values. I got an ‘a’ number of .305 and a ‘n’ number of .01 .I used potassium nitrate that I got from a co-op. These number were obtained with non-milled potassium nitrate….   Read more»

also have a ballistic evaluation motor that I’ve used to determine the ‘a’ and ‘n’ numbers of different propellants. Edward, remember I gave you some of your Sorbitol back last January at the dinner, and you said you’d pass those…   Read more»