Schock Aluminum Mast Denied Class Sanction

The Schock-manufactured aluminum Thistle mast was rejected for class sanction by TCA Measurer George Devlin after extensive testing. Although the class approved a proposal to use aluminum spars in 1959, Devlin determined this specific mast design did not conform to Thistle specifications and was therefore not permitted.

This is a summary. The full article text is © the Thistle Class Association — read the original scan via the link above.

• masts
• Schock
• TCA rules
• aluminum construction