Loc precision 4 inch black brandt

[Scott Nokes]

Hi everyone
I'm building the loc 4 inch black brandt and should I bevel the fins to create a airfoil.
Thank you

 

[David Schwantz]

I like to bevel LE and TE on all my fins. Does not mean that it is creating an airfoil, but cuts down on drag a lot. Also IMO looks way cleaner. But nothing wrong in having an airfoil shaped fin. The only requirement is pics.....

 

[dr wogz]

The Cosmodrome BB had really nice fins, and the proper template / profile denoted in their instructions. if you can get a set, you can really do them right!

They have a really neat bevel / taper on them

http://www.cosmodromerocketry.com/Instructions/BlackBrantII/instructions_BBII.pdf
http://modelrocketbuilding.blogspot.com/2019/02/estes-black-brant-ii-kit-1958-build_28.html

 

[Tyler P]

Hi everyone
I'm building the loc 4 inch black brandt and should I bevel the fins to create a airfoil.
Thank you

Is this the 4" BBX or did they have another BB at some point?

 

[heada]

Is this the 4" BBX or did they have another BB at some point?

LOC has BBX in 1.6", 2.2", 3.1" and 4.0"

 

[Tyler P]

LOC has BBX in 1.6", 2.2", 3.1" and 4.0"

I know they have 5 different versions of the BBX (2 are 2.2, one 29mm and on 38mm mounts). I was just wondering if LOC had made another version of a Black Brant other than the BBX. So, no, haha. Man, I wish they made a BBII in a 3 .1" or 4".