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Old Yesterday, 09:52 PM
Jerry Irvine's Avatar
Jerry Irvine Jerry Irvine is offline
Freeform rocketry advocate.
Join Date: Jan 2008
Location: Claremont, CA "The intellectual capitol of the world."-WSJ
Posts: 3,391

Originally Posted by Shreadvector
One of our members flew a B4-4 in an Estes Monarch on Saturday.

He got the motor from Charlie at NSL. I do not know the date code since our club member removed the label for fit.

Flight was perfect.

Delay time seemed to be very close to 4 seconds - the longest I would estimate was 4.5 seconds.

Ignition was perfect using the 3/64" heat shrink tube installed next to the initiator.

Ejection charge was perfectly sized. I suspect that this was from a batch of motors produced after the initial feedback provided, as they stated that all motors were now being made with the reduced-to-proper-levels ejection charge.

I have no idea why the first batch of B4-4 motors dated 050118 have the 6 or more second delay time. it would be pure speculation to guess that maybe the motors were either built with the 6 second delay installed or mislabeled.

I'm itching to buy a very large number of all these motors since I like the performance and initiators.Just waiting to get official word of the casing diameter revision and updated instructions (which will include max liftoff weights for each motor and delay time as well as the info on using the 3/64" dia heat shrink which will be included).
I occasionally agree with you.
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