V-mount for Supra

[Berrie]

I have a lot of fun, building an Supra, incluiding boom, pod and V-mount.

But now and than a little question rises.

I've just finished my first V-mount according an drawing from the yahoogroup.

It works fine but the V-mount turned out a little heavie, I think(Dont know wath commercial availeble V-mount weights are). Mine weights 6 grams. Twice as much as the v-mount mentioned in the Supra fuselagefile. That gives about 6grams of extra lead in Supra's nose :o

http://www.rcgroups.com/forums/showatt.php?attachmentid=1590362&stc=1

The questions:

1) What is structuraly important for a V-mount? I don't want to save weight at the wrong places.........
2) Is there a "special" Supra V-mount "how to build file" availeble? Or is the Bubble Dancer V-mount suitable?
3) If it is, how do you wrap the ten 1K CF tows in inner pin lugs? Thats important toknow, because a whole trough running pin is an important part of the extra weight.

Of course its all not a very big deal, but.... its in the spirit of the Supra's design to be carefull with weigt.

[markdrela]

The numbers on my Supra V-mount:

3.5g

V-strut section:
18mm "chord" at bottom to 3.5mm "chord" at hinge
0.75mm thickness over most of strut, increasing suddenly to 2mm at hinge.

Platform:
39mm span x 20mm chord x 0.65mm thickness

Fence:
5.5mm high x 0.85mm thick

Horn:
28mm platform to hole
20mm chord at top to 3.5mm chord at hole
0.5mm thick, flaring to 1.5mm thick around the hole

Pins:
9mm x 1mm diameter

[Berrie]

Thanks.
http://www.rcgroups.com/forums/showatt.php?attachmentid=1593008&stc=1