Hi Bill,

We run DA in the 8,500+ range in the summer at Moriarty; the field
elevation at Silver West (C08) is 8,290' MSL so I expect DA was
considerably much higher. Back when the EGT and manifold pressure
gauges worked, I would lean on tow but, with a constant speed prop it's
better not to mess with it since cylinder head temperature is too slow
to respond.

Where are you flying?

On 12/25/2014 2:20 PM, Bill T wrote:
Roger on the leaning. Surprised you do not normally lean on tow. In summer temps here I start leaning at 200-500 AGL, even for a 2K tow.
I can watch the RPM come up when I lean. DA is already at 5500 or higher on the ground.

--
Dan Marotta