Apogee Zeyphr Finished

The Rocketry Forum

Help Support The Rocketry Forum:

Alan R

Well-Known Member
TRF Supporter
Joined
Oct 11, 2018
Messages
598
Reaction score
395
Location
Oregon
Me. I rounded LE only. Rounding that leading edge is probably the absolute easiest way to increase your apogee. Depending on the motor, the difference can be as much as 150-300'
 

kevin.mcgee

Active Member
TRF Supporter
Joined
Dec 27, 2020
Messages
30
Reaction score
28
No, I don’t sand fins on HPR kits. I’m not looking to set altitude or speed records. If the fins don’t come beveled it’s not worth the effort for me to do it myself. I also built a Zephyr.
 

Rory Gin

Well-Known Member
Joined
Apr 2, 2021
Messages
52
Reaction score
30
Location
Regina, Saskatchewan
I am building my Zephyr right now. I bevelled the leading edge only but I contemplated bevelling the trailing and side edges. The hole in the fins is just a little too close to the edge for that. No rounded edge but a 30° sharp bevel. I have a B&D mouse sander that made the sanding work easy. I followed up with filling the surface and power sanding with 120 grit. I may come back with a 240 grit and touch it up but she looks fine to me. 😍🚀

So many people have left the edge squared off but I wanted to go a little further than "most people" because I prefer the aesthetics of the bevelled leading edge. Hey, nobody said we have to be the same!
 

DMehalko

Well-Known Member
Joined
Jan 25, 2010
Messages
289
Reaction score
251
Location
Colorado
I also built a Zephyr for my L1. I wanted to airfoil the leading edges on the fins after watching Patternflyer's build thread but decided not to because of time constraints leading up to the launch.


this is awesome! How did you do the NC bubble?
 
Top