stevem
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- Jun 7, 2009
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This weekend was my first time launchin AT single use F21-4W. This is the largest motor I have ever used.
All I can say is WOW! The first time out the copperhead ignitor burned up without lighting the engine. (why doesn't AT include and extra ignitor in the package?!)
We replaced the igniter and loaded it back into my Estes V2.
The rocket almost disappeared. The roar and the smoke were awesome! Chute deployed right after apogee and the rocket took a liesurely drift right into the top of one of my cotton wood trees! My wife lifted me up in the loader on my tractor and then I used a 20' pole to knock it out of the tree. Only damage was a broken shock cord.
Undaunted we loaded an F21-4W into my scratchbuilt GBU-15 (possibly the ugliest rocket ever built). A PERFECT flight in every sense! The really cool thing was the motor kind of spat and sputtered for a couple seconds before it finally took off with a roar! Rocket landed about 200' from the pad! COOL!!
Third time we put up my 42" long Coyote on the F21-4W and it was by far the best flight this rocket has ever seen.
I love these motors!!! but i am not thrilled with the copperhead igniters - are there any alternatives?
All I can say is WOW! The first time out the copperhead ignitor burned up without lighting the engine. (why doesn't AT include and extra ignitor in the package?!)
We replaced the igniter and loaded it back into my Estes V2.
The rocket almost disappeared. The roar and the smoke were awesome! Chute deployed right after apogee and the rocket took a liesurely drift right into the top of one of my cotton wood trees! My wife lifted me up in the loader on my tractor and then I used a 20' pole to knock it out of the tree. Only damage was a broken shock cord.
Undaunted we loaded an F21-4W into my scratchbuilt GBU-15 (possibly the ugliest rocket ever built). A PERFECT flight in every sense! The really cool thing was the motor kind of spat and sputtered for a couple seconds before it finally took off with a roar! Rocket landed about 200' from the pad! COOL!!
Third time we put up my 42" long Coyote on the F21-4W and it was by far the best flight this rocket has ever seen.
I love these motors!!! but i am not thrilled with the copperhead igniters - are there any alternatives?