On 1/14/2019 1:11 PM, Kevin Stolhammer via KRnet wrote:
That may
make it worth the expense.Certainly you work have to get some super
performance increase to make it cost effective.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
If you're factoring in cost, don't forget to account for the cost of a
$400 propeller and engine tear down the first time the gear collapses.
The retracts on the KR were quite a novel idea when Ken build his 480
pound KR2 but no one builds 480 pound KR's now days and haven't done so
for the last 30 years. 650 pounds is more representative of a "light"
KR today with many coming in at 700+ and several most recent I'm aware
of are 800+. If a hard landing in a 500 pound KR will put the gear bar
through the top wing surface imagine what a 2 G landing in an 800
pounder would do. (can you say "instant wing spoilers") If you're
building a "light" KR and want to go retract there is no reason not to.
Just be aware of the short comings of the original retracts and try to
eliminate any of their problems, as several builders have attempted to
do. Some have tried modified lock downs, some have shortened the bar to
stiffen it, etc.,etc., ...........
Like I've said many times, go with what you're comfortable with and
accept the consequences.
Larry Flesner (29 years of KR exposure - 15 years flying one)
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