Hi guys,
I am back to control line after about a 40 year lay off.
I chose a Jr. Lightning Streak as my first model back because on Brodaks site it said it was a trainer and on special and I thought I wouldn't be too heart broken when I put it in the dirt.
The build has gone very smoothly so far. I am using Silkspan and applied as per Brodaks instructions. The wing tips, on the trailing edge, are about 2 inches wide. I was very precise when installing them that they were square and true.
After applying the second coat of dope, onto the Silkspan, to the wing frame only, I have thinned it 50/50, I have noticed the trailing edge on the outboard wing tip is warped upwards and the inboard warped downwards. I have applied a couple of coats of dope in the opposite side of the warp and the outboard seems to be straightening up but no movement on the inboard!
I also covered the Stabilizer and it was perfectly true to the wing and fuselage prior to covering but is now about a half inch higher on the outboard side! It is perfectly straight so I wonder if the fuselage has twisted near the rear rather than the stabilizer actually being warped. I have not tried to fix this yet.
I do not want to waste anyone's time so I have spent about an hour searching for warp fixes and reading through threads but not found one that actually explains a fix. They suggest steaming but not how you do it.
Is there a fix?
Many thanks in advance.
Craig
Ps. I did sand and dope the airframe, as per Brodaks instructions, prior to applying the Silkspan.