Hi all, does any one have any advise on props, my kr2 has now had its second
test flight on it, The prop is a Tonini gt, its a 56*44 and i am only getting
2800 rpm on climb and 2900 at 140 Kts. (160 mph) Revmaster claims full power is
85 hp. @ 3200 rpm. the climb also appears to be lacking. engine is a revmaster
R2300. I am missing 3-400 rpm. would trimming down the diameter a little at a
time give me back my missing revs.My other thought is, the engine now only has
1.2 hrs on it from new, can the engine develop more power as it runs in, so am
i jumping the gun thinking about the prop yet.Test pilot claims the 'little KR'
(smurf jet) is a beautiful little plane to fly, well balanced in all controls
and, the mod to the tail (same as Troy Petteway's ) has really paid off. not
overly sensitive throughout the whole speed envelope and still powerful enough
for full control at low speed. (big relief !!).Other thing is i may have
ballsed up on my tail incidence as the nose keeps wanting to lower even with
full up trim, I added a second adjustable trim to the control bell crank at the
elevator with bungee cord to between the seats and that still required a lot of
pull to trim the plane out. ortest pilot is also a light weight (he is), I
haven't checked the weight and balance figure but I am guessing he has put the
CG fwd of the fwd limit. (as a 85 kg (187 lb to you yanks) pilot and full head
tank I am 1/4" aft of the fwd limit). I have been told this was to be expected
on the first flight (nose down trim that is)One more thing, I have lagging on
my header pipes can this cause me to have higher than expected EGT temps approx
50c and higher. (122f for the yanks), lagging was put on to protect wiring and
coils, on the R2300 with individual ignition coils, the front exhausts run
parallel under the head and approx 1/2" away from the coils.
