I have a smaller glider I fly on RCT motors. 32mm is an oddball, but the F13 and the G12 are about as slow burn as they get. Gotta love Blue Thunder endburners!
Ari. On 3/31/13 8:06 PM, Steve Ainsworth wrote:
Ari Thanks for the tips. That reminded me of back in the late 1990's when I flew one of AT's "Turbo" hybrid motors that I had inserted/epoxied a spent Estes D motor through the center hole of the white lightning grain to prevent burning from the center, and epoxied an insulator to the top of the grain making it an end burn (the hole was necessary for the N2O flow to the cardboard grain). I had the first hybrid motor with tracking smoke! BTW, this was all under the supervision of Gary R. The flight was at Delmar Dry lake in Nv. I was also able to fly a Kosden motor with an AT N2O tank added to the forward closure for a Kosden "Turbo". Imagine, a combined Kosden/Aerotech motor! Maybe that was the AT Saint Kosden. I might have to try the I59. Steve PS I flew my glider on the AT RCT motor. They have an odd diameter. -----Original Message----- From: tccrockets-bounce@xxxxxxxxxxxxx [mailto:tccrockets-bounce@xxxxxxxxxxxxx] On Behalf Of Ari Krupnik Sent: Sunday, March 31, 2013 10:58 AM To: tccrockets@xxxxxxxxxxxxx Subject: [tccrockets] Re: Motor request 38mm I love AT endburners! They are the motors that my Vulcan glider likes to fly on more than any other reload. Nominally, I49 and I59 require a special "endburn-style plugged threaded" closure. It's a solid piece of aluminum without a delay grain cavity; the reload kits come without delay grains. With an endburner, tha danger is that flame front can get around the grain and if you burn the candle from both ends, you're likely to overpressure the case. Pressure above the grain can also try to push the grain down through the nozzle, which may plug the nozzle and again result in a burst casing. AT's 1-grain endburner (G69N) comes with a smoke grain and uses a normal plugged closure, but instructions tell you to inhibit the top of the grain with epoxy and the delay grain with lubricant. Apparently, for the larger endburners, AT feels that this precaution is insufficient and tells you to buy the special closure. In the photo: regular plugged closure (right) vs endburning closure (left). Ari. On 3/30/13 10:00 PM, JACK GARIBALDI wrote:Yes I have all of them below. Jack Sent from my Mil Spec IPhone 4S On Mar 30, 2013, at 9:35 PM, "Steve Ainsworth" <sainsworth@xxxxxxxxxxxx <mailto:sainsworth@xxxxxxxxxxxx>> wrote:Jack Do you have an AT I154J? Or the AT I59WN? I would also need the 38/480 casing and plugged FC. Steve A
