200 mph cruise Kr2?
Not a chance.
May be in a dive or flat out for 5 mins running nitros and burning insane
amounts of fuel.
A major reality check is required.
My 75 hp 2.2 Jabiru Powered KR2 does 148 mph flat out burning shed loads of
fuel. 7 Gallons an hour. I did fly in a competition 16.4 hours in one day in my
Kr2, and covered 1,680 NM, I needed the rest of the week off after that. It
nearly killed me. As for Jabiru's, I wouldn't be flying around the world behind
one if I thought there was a better option. Its delicate, but if you look after
it..
Agreed, all this talk of 200 mph Kr2's is a waist of time. You'll be lucky to
finish and fly the Kr anyway, far more fail than ever get finished.
Just build what you have as well, as quickly and as easily as you can. Unless
you have years to waist and thousands of dollars to throw at new wings, then be
my guest. But just crack on with what you have got and it will be what it will
be and fly as fast as it does. I expect you will not be disappointed. Unless
you really are hoping for a 200mph cruise. 140 mph cruise in a KR1 would be
good with about 75hp
A 2.2 Jabiru in a KR1? Yes I'd go along with that. 60lb lighter than a VW of
any sorts and more powerful. Upto 100lb lighter than any other option Turbo
charging engines or talk of screaming about in Cassutts at 200 mph, yep, but
that's flat out turning 3,600 rpm and they don't last 5 minutes.
I may sound negative, but I'm trying to be as positive as I can be. You have
far bigger concerns over just the logistics of finishing the plane and flying
in it than wondering if you can make it cruise at 200 mph.
All the best and good luck with the build.
Colin Hales.
I'm presently at Wurtsboro, 60 miles North of New York, heading North East to
the very top, before heading West rapidly in about 10 days.
