Originally posted by Aron Sanford
HI Al!
The Lacrosse went up fine except for one flight when it arced to the left toward the end of it's flight. I think maybe the wind came up & pushed it. So I waited for a windy day (not that windy-wanted it back!) & shot it off. The large fins picked up the wind & it arced over again toward the end of the flight when I guess the motot was about out. I forgot to mention that one flight on the review. It was fine the rest of the time. Sure looks different like the Lark.
Just want to let you know that it is worth posting your post-review experiences in the EMRR flight logs. The flight logs can often provide as much useful information as the review itself as you (& others) accumulate more flights with a rocket. Not to mention that it's an easy way to track your own flight history! And don't forget you can post constructive opinions & tips for any particular kit too.
I'm willing to bet that your experience is that the rocket is weathercocking post-thrust as the large forward wings & (probable) nose weight are making the design susceptible to the slight change in direction as it coasts to apogee. Assuming the rest of the flight is near vertical, I'd say that you really don't have anything to worry about...
Originally posted by Hospital_Rocket
Come to think of it, uneven thrust might have been the problem. I do recal; that at the end of the flight I could hear two distinct pops as the ejection charges went off. There was a light breeze so I attributed the arc to that. I was using a small motor as I really wanted the bird back to complete the review. Next flight will be on C6-5s.
Hearing 2 distinct ejection pops with BP clusters is to be expected. You will find that there is ~20% variance in ejection times. In fact, I'd be surprised if you only heard ONE pop. With multiple BP motor cluster rockets, it almost sounds like popcorn popping
HTH,
