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Aircraft tubing is available in thousands of sizes from the "Aircraft Spruce and specialty company" at WWW.aircraftspruce.com Email for questions is info@aircraftspruce.com Outlets in Corona California

and Griffin Georgia. Tubing sizes of ID and OD are spaced so as to allow you to slip a smaller tube into a larger tube with a light sliding fit. once completed the structure may be heat treated to improve strength.

Required use in most racing organizations for roll over structures. Special rules for welding and after weld draping or slow cooling. Drop smaller pieces into a lime box. Drape larger pieces or structures with ceramic blankets to slow cooling and keep out cool air currents. Comes with a brown oxide coating that must be removed prior to welding. Welds easy....brazes easy.

Lynn E. Hanover

In a message dated 7/23/2020 12:23:21 AM Eastern Standard Time, flyrotary@lancaironline.net writes:

Hi All members:

The 4130 chrome alloy seamless pipe for the engine mount.

What is the appropriate size for building a engine frame, as the included drawing of Paul L. ( copyright P.L )

The outside diameter and wall thickness ?

7/8 Inch OD x 0,069 “ Wall thickness ?

or 0.120 W

1 inch x OD ?

Cant find any specifications for such a design.

Sent from my iPhone
Le Roux Breytenbach --
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