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Also if your going for as much altitude as you can get, waiting longer to start air starts is more efficient. Still you have to take in consideration of what James said. If you wait to long your rocket will…   Read more»

Question: 2… Does the L730 ignite fast?the smaller motors come up to pressure faster, smaller area to pressurize.Question: 3… Any special considerations in getting them to lightall at one time?(such as extra long leads to keep motors connectedto power as…   Read more»

Excellant advice from Art. The CTI motors are consistently easy to light with the supplied ignitors and a little help inside doesn’t hurt for airstarts. Adam Boggs and Jason Chamberlin have both flown the L730. And the answer to #35…   Read more»

Question: 5…. This will be My first apogee (drogue) ejection withelectronics. Any suggestions? I have Missile Works and Perfect Flite.Do it just like you do your main deployments now. Charge size may very but for the most part it is…   Read more»

Mike, all good questions. To some degree there is I bit of personal preference involved in when the air-starts go and how. The thing you want to do is take the most important safety factors of the flight and work…   Read more»

I have a 4″ x 12″ ebay. I have a 1/4″ hole in it already. Is this enough for this size e-bay or should I add a few more? Im using a adept alts25 alt.I would check the directions for…   Read more»

Best thing I found with the new systems with the STD Vista is get one with the XP downgrade (yeah right) program. It puts XP on your new computer but leaves the VD program on for later if you should…   Read more»

I have talked to Paul, that is were I got my info. see bellow:”James,I assume we are talking Commercial motors. The dividing line for yes or no has to do with motor case integrity. If your modification compromises the case…   Read more»

I don’t know if he reads the forums or not, but Dennis Billings would be the one to talk to.Not sure who Dennis is but the person that makes the call on things like this for TRA is Paul Holmes…   Read more»

I have precision lathe capabilities up to 8″ diameter and 13″ long. I’m more than happy to turn factory closures down. Not so happy to make one from scratch since I’ve haven’t learned how to thread things yet..Personally and not…   Read more»

I don’t know if he reads the forums or not, but Dennis Billings would be the one to talk to.

turning an aft closure flush to the AF does not make a motor “not certified”. As long as you do not do anything to the temper of the AL and do not change anything can change the way a motor…   Read more»

If I had a lathe, I might be tempted. But mostly I’d like to use a certified motor so that I can set a record. I think the I and J records are do-able with our launch site and existing…   Read more»

Instead of front loading, wouldn’t it be easier to turn down the retainer to a tailcone and then fly it on a research day?Edward

I emailed Tom Rouse to see if I can get some flush aft closures in 38mm. They would be not only good as a sustainer coupler, but should help with base drag in altitude shots.With a flush aft closure, it…   Read more»

Happy to have helped out. Thanks Mike.

By the official rules, ANY modification of a motor casing or closures is forbidden. This means that the many flyers who have drilled and tapped plugged forward closures for eyebolts or who have had custom rear closures made or turned…   Read more»

I contacted Tom Rouse and he said they make flush rear closures and they are currently in stock and do not affect the certifications.I also contacted Robert DeHate at AMW about removing their aft thrust ring and that is OK…   Read more»

You might give Mr. Rouse a call. I thought I read something on TRF about him doing an aft closure with the OD matching the tubing, specifically for staged projects, but it didn’t go to market. I’ll try to find…   Read more»

I understand the sentiment here, and for my TRA records I never used modified closures. In fact, in retrospect, there were no “closures” as they were single use motors. I have flown tailcones on some other rockets.That aside, I wonder……   Read more»