Hi Guy, .012" will be perfect. If you are very careful, .008" lines would be even better.

The problem with .008" lines is that they are easily kinked and damaged. Line length can

be 45' to 52' for your .09 model.

My 1.0cc diesel Ring Jr model originaly flew on 35' X .012" lines because I had a lot of

1/2A Combat lines left over. Later I changed to 44' X .008" lines for this and subsequent

PAW .049 diesel powered Jrs; the models flew much better. I am referring to stranded cable

when I say lines.

Tony