I've got a couple of bigger rockets on the way. Currently, the largest kit I've built is a Dynastar Grappler that is 2.6" OD. I've launched it several times using regular wadding but I've been thinking about going to a Nomex chute protector or even getting some of the Sunward ejection charge baffles and using those on future kits. I have two Estes Executioner kits on the way and wondered which might be the best way to go.

Also, I think I should go with a Kevlar cord on these kits. Has anyone built an Executioner and made modifications like this? Thanks for any advice!

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SAM #0354

Built an Executioner last year. Used Kevlar around motor mount and elastic shock cord exiting. I installed Nomex chute protector and a thin mil nylon chute from Top Flight Recovery. Flew it several times-flawlessly.
I'm a BAR just back in the last couple years. Last year I added a few Nomex chute protectors to mainly my midpower. I'm adding more this winter as I've had excellent experiences thus far. I like ejection baffles too, in the right rocket, but I still use wadding or a Nomex protector then.

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NAR # 39505 SR L1
NAR Section #576 MASA Member

Personally, I like the Semroc "double tube" baffle kit (#EB-80T) for 2.6" bodies.

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Cool, thanks for the advice guys. I will probably go that route.

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SAM #0354

After discovering baffles, about half of my rockets have them installed.

I make my own from cardstock and coat them with white glue.
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JeffyJeep is right, for a 2.6" body tube you should probably go with the Semroc "Double tube" baffle.
For BT-55 and BT-60 tube sizes, you can make them yourself:

http://modelrocketbuilding.blogspot...fle-part-1.html
http://modelrocketbuilding.blogspot...fle-part-2.html
http://modelrocketbuilding.blogspot...fle-part-3.html

Attached Thumbnails

 

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Hans "Chris" Michielssen
Old/New NAR # 19086 SR

www.oddlrockets.com
www.modelrocketbuilding.blogspot.com
http://www.nar.org/educational-reso...ing-techniques/
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Awesome! Thanks for the links and all. I appreciate it!

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SAM #0354

What is the smallest BT you guys would build a baffle for? I've built baffles for a few of my BT-50 based clones, but haven't yet tried for BT-20...anyone have any advice? I love the idea of jamming a motor in, and going (after packing recovery, of course), and wadding seems wasteful!

I don't bother with anything under BT-55 sized rockets as those size use little wadding anyway. For BT-55 and above, about 75% of my rockets have them. Those that don't are for a specific reason usually. For example, the BT-80 body tube on the original Estes Little Joe II is far too short to allow a baffle along with all the recovery goods.

As far as a source, you can't beat Semroc for baffles or for that matter EVERYTHING else parts wise for LPR, MPR and lite-HPR.

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So, what would you suggest the minimum distance between the engine block and the baffle be?