New Glenn(first post)

[Ryan Miller]

Alright, so this is what I came up with. I decided to attach the MMT to the external coupler(male). I could've put the male on the inside and attached the MMT to the rocket body but I didn’t really want the threads sticking out of the bottom for display. I didn’t figure it was a huge deal given it probably won’t ever see anything bigger than a B. It’s pretty solid too. Just wanted to ask your guys opinion on it and see if you guys could think of any problems with this I couldn’t.

 

[Nytrunner]

Way more stable!

What's the all up weight sans-motor?

 

[Ryan Miller]

Way more stable!

What's the all up weight sans-motor?

115g

 

[neil_w]

Be aware that you're right at the edge of the weight limit for a B. Go for the short delay version (B6-2) if you have a choice.

Fins look good.

 

[Tobor]

That is a neat solution! Kudos to kuririn for pointing you in the right direction.

 

[jqavins]

Be aware that you're right at the edge of the weight limit for a B. Go for the short delay version (B6-2) if you have a choice.

Or bite the bullet and use a C6 (slightly better peak thrust) or Q-Jet C12 (much better). Why only a B? If it's fear for your baby's safety (quite understandable) then it's important to remind yourself that an underpowered motor put's her at more risk than an overpowered one. Overpowered means a long recovery walk, and danger from rocket eating trees. Underpowered may mean insufficient speed off the launch rail resulting in unstable flight, and/or insufficient altitude for good 'chute deployment, and consequent crash. And C motor will take care of hte altitude, and improved peak thrust will help with speed off the rail.

 

[kuririn]

Only thing left is to check for stability (swing test or Open Rocket) and add nose weight if needed.
+1 on the Quest Q-Jet. The black smoke makes for great launch pictures and videos.