When I built my AT m1780 (75mm), there were o-rings that were placed
between the grains. I worked with others who had sent up the same motor
before and they made sure I included the o-rings between the grains. Be
sure that you have the needed o-rings for the forward seal disk, the
forward closure, and the aft closure.
On Wed, May 16, 2018 at 9:26 AM, Richard Dierking <applerocketry@xxxxxxxxx>
wrote:
I’m getting ready for LDRS and my L3 flight attempt. I’m planning on
using a M1600R motor. It’s a 98mm 3 grain. I noticed 2 extra small
diameter O-rings in the build kit that are not mentioned in the
directions. Are these O-rings to be placed between the grains?
BTW: just thinking, what difference really would they make for this motor?
If you have experience with this motor, I would appreciate your advice.
Thank you,
Richard Dierking
TRA #11366, L2
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