× Welcome to the CMASS forum!

A place to discuss anything related to CMASS (and other) launches.

The New Apogee Zephyr

  • Frank DeAngelo
  • Frank DeAngelo's Avatar Topic Author
  • Away
  • Gold Boarder
  • Gold Boarder
More
5 months 2 weeks ago #9303 by Frank DeAngelo
Has anyone seen the new Zephyr kit from Apogee.
It has a new unique system of attaching the through the wall fins to the centering rings. Check it out.
www.apogeerockets.com/Rocket-Kits/Skill-...l-Rocket-Kits/Zephyr

What do you think?

Please Log in to join the conversation.

  • John P. Petrakis
  • John P. Petrakis's Avatar
  • Offline
  • Expert Boarder
  • Expert Boarder
More
5 months 2 weeks ago #9306 by John P. Petrakis
Look's like Van Milligan's answer to the Aerotech fin-lok system to me. Certainly looks sturdy enough for sure.

Please Log in to join the conversation.

  • Frank DeAngelo
  • Frank DeAngelo's Avatar Topic Author
  • Away
  • Gold Boarder
  • Gold Boarder
More
5 months 2 weeks ago #9307 by Frank DeAngelo
I have heard of the Aerotech fin-lok system. From what I know I think it is for plastic fins and that it can be a challenge to snap in the fins. The Apogee system is for wooden fins. When I built my Torrent I put fin fillets on the outside, inside and where the fin tab meets the motor tube. That's probably why it survived a hard landing.

Please Log in to join the conversation.

  • John P. Petrakis
  • John P. Petrakis's Avatar
  • Offline
  • Expert Boarder
  • Expert Boarder
More
5 months 2 weeks ago #9310 by John P. Petrakis
Yes the fin-lok system does require some brute force to seat the fins... but once they are in they are IN. Either system affords the ability to apply internal as well as external fillets... which is a beautiful thing.

Please Log in to join the conversation.

  • Frank DeAngelo
  • Frank DeAngelo's Avatar Topic Author
  • Away
  • Gold Boarder
  • Gold Boarder
More
5 months 2 weeks ago #9311 by Frank DeAngelo
You can download the assembly instructions for the Zephyr from the Apogee web site. Check it out and let me know what you think. BTW Space 1999 is on the TV. Very cheesy special effects. I never could figure out the point of that show except that Martin Landau from Mission Impossible was in it.

Please Log in to join the conversation.

More
5 months 2 weeks ago #9313 by Todd Lainhart
Re fin-lock, the NCR by Estes models used a locking system where the TTW plywood fins snapped into place on slotted plastic centering rings. I built three of those, and really liked the mechanism.

Please Log in to join the conversation.