PIK 20D Undercarriage Lightening Spring

[Varley Ibbo]

Thanks to Florian for spring details. However, those details didn't match my spring when extracted.

This is it. I made a special tool to extend a new one for installation. It took three days and a lot of patience and ingenuity. 

The new spring has improved the undercarriage operation enormously. A test showed the 50 year old one to be 15% down on pulling power.

Any one wants a spring, contact me for details.