ORIGINAL: pratorian
If you have an advanced F16 Juan and your nose gear is collapsing you can fix it. I had problems with mine collapsing I just modified it and now it will rip off out of the plane before collapsing. Many others had that same problem. All you have to do is regrind the flat spot on the pivot shaft that retracts/ extends the nose gear drag link to give it more travel when it extends. It'll put more pressure on the drag link in the down position and will make it virtually impossible to collapse.
F16 1/8 ADVANCED VERSION
Ok to try and clear this up, does he mean regrind the flat on the spindle ( indicated by Black line) which will force the drag link up (indicated by Red line) keeping it locked straight, if this is the case have you guys done it on the cylinder side of the spindle where theirs two grub screws, or the drag link side which has one larger grub screw.
Also i see the mains now have three cylinders third acting as a lock any guys had problems with the two cylinder set up.
Cheers in advance
lozza