hi to all. im building a sig riser, its an old kit and the manual is missed, so can someone help me? i need to know how much dihedral has on the wings
the dihedral at the root can be done with the plywood central piece, but the second dihedral of the wing tip ?
please help
thanks

nobody?

I don't have a Riser but a lot of the 2m gliders like that would have the outer dihedral break in the 10degree range.

I think the Oly 2m had 10degrees out there. The standard Oly has 8degrees however.

I never built but one or two kits and didn't keep those plans so I can't look anything up. However, that 10degrees was common enough that I made myself a building board with that for the outer dihedral break. So I feel confident in suggesting that 10degrees will work well.

Hi --- I still have the wing , so maybe a picture will help You . Sand me a e-mail adres .....

my is [email protected] .

Have nice day ...... Mirek J.

Riser 2M Dihedral
With the main (inner) wing panel held flat against the table...
1) the tip panel's outer rib is 2 1/4" off the table surface.
2) the other main panel's outer rib is 2 3/4" off the table.

With the wing symmetrically balanced on the center joint (flight attitude), there should be 4 degrees under each inner wing panel and 10.8 degrees under each tip panel. All degree values measured with respect to horizontal, not to another wing panel.


Riser 100 Dihedral
With the main (inner) wing panel held flat against the table...
1) the tip panel's outer rib is 3 3/4" off the table surface.
2) the other main panel's outer rib is 1 1/2" off the table.

With the wing symmetrically balanced on the center joint (flight attitude), there should be 1.7 degrees under each inner wing panel and 8.9 degrees under each tip panel. All degree values measured with respect to horizontal, not to another wing panel.

Tim

The plans for the 2M Riser illustrate building it as a one-pice wing, but a one-piece wing is a pain to haul around. I strongly suggest that you take the opportunity to build a wing joiner into the spar roots. That will allow you to break the wing down into two 1 meter panels for easy transport. Overall, it adds a little weight and a lot of convenience.

Tim

OK---- we get the pic.

Mirek J.

thanks espirit2 , your information was fantastic!!!!!!!!!!!!

Ecead: good luck try'in to get sig to send you a part or a plan as I've E-mailed, sent letters an even tryed to call em bout a part for my sig senior, I don't think they care about foke who just want parts. I own four sigs but don't think I'll be get'in any parts or replys from sig' but weve got some inovative guys on this forum to help us out, I've built a mess of Sigs though the years, it's to bad they don't care about the fokes who spend hundreds of hours build'in there planes an might have a ?'s or a request,

I can scan my manual and sent it to you, It has rib angle templates and dimentions for the dihedral.

Guess I am lucky - on three occasions, Sig sent the missing kit parts or the price and part number for the replacement parts I needed to buy. They replied within a day.

somegeek