Model Rocket Building Blog 
Model Rocket Building Posts
Sport Rocketry / Techniques / Clustering
John Mack's Cluster Igniter Tip (2012-02-20)
At the Tampa TTRA launch, I asked John Mack what the small drawn dots meant on the Estes igniter paper tabs. He explained those were tested and matched igniters. When John pics igniters for use in ... [Read More]
Matching Cluster Engines (2013-07-18)Check out the clay caps on these three Estes C6-5 engines. All three are from different batches, made on different dates. I was picking out engines for a two engine cluster model. It's probably ... [Read More]
Q2G2 Cluster Ignition Questions? (2016-01-26)On TRF, "ActingLikeAKid" asked why the Estes Pro Series Igniters were called "Sonic". Later in the thread, "Samb" posted a video link to the NARAM 56 Manufacturer's Forum. This was recorded a year ... [Read More]
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