Hi David,

You and I have discussed the tks system before.
I am still trying to finalize installation on my IV-P.  You may remember I had Greg Cole look at the panels.  He was very concerned that the leading edge radius was much tighter than the original airfoil and that would aggravate stall characteristics.  According to his model, the h-stab in particular would stall at 40% of the AOA of the bare airfoil.   At one point I sent Len Fox to test your airplane but the weather didn't work out.  I still have panels just like yours in storage which I have not installed yet.

Anyway,   since then I was very very close to having specially built panels supplied by CAV aero-space.  However, the person I was dealing with left the company in October.  It now appears that CAV is not going to honor the agreement.  Therefore I am in re-evaluation mode.

So I have these questions for you.
- assuming a wonderful installation such as you have, have you noticed anything "weird" about the way it flies at low airspeed?
- how many times have you used the system and what have been the results?
- if you didn't have de-ice,  how much would it reduce the utility of the airplane?

best regards,

Colyn Case
802 888 7422


On Feb 25, 2009, at 2:43 PM, Dr. Weinsweig wrote:

i have a tks system installed by brian alley(304-395-4932) on my
propjet.  it is a sleek installation and a tried and proven system and
when done right does not seem to cost much in the way of speed.  i saw
313 ktas at fl210 this past weekend!  i have no experience with the
other systems but for a proven "get out of jail/ice card" i did and
would stick with the tks system.

david weinsweig
n750dw lancair propjet
still for sale-make offer
weinsweigd@gmail.com
304-633-5221


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