Peter,
300 series Lancairs have a very strong left turning tendency (P-factor,
weather vaning, etc.). Even the engine mount has the engine canted to the
right to compensate. The small rudder does not have much effect below
40 KIAS. Yes, you must tap the right brake often on a take off roll when
below 40 KIAS and power must be applied slowly until enough speed is gained for
the rudder to be of some help. It is useful to lighten the load on the
nose gear as you speed up.
There is not much cooling at the lower speeds used in taxi tests.
Also, new engines generate more heat from internal friction before
break-in. I don't have enough information to comment on your cooling
system, but 200F (about 100C) oil temps and close to 400F (about 200C) cyl head
temps are not that surprising depending on conditions of hi power, slow
speed tests. Have you checked engine timing?
Grayhawk
Hello
friends,
I am in the pre-first-flight phase and suffer some problems. I
would
appreciate valuable hints to the following issues:
- being on
the runway and pushing the throttle forward I have to constantly
brake on
the right side not to leave the runway. Is that "normal" or up to
which
extend is the latter tolerable ?
- I have my oil-cooler in front of
Zylinder 2 facing downwards. I have a
plenum to seal the incoming air. I
placed a small cover over the cooler to
guide the air downwards for cooling
purposes. The remaining air is going the
Zylinders 2 and 4. Unfortunately
CHTs are still very high (>200 C) and
oil-temperature is after going the
runway 4 times up and down (1,5 Km) more
than 100 C. This is definitely to
much. Outside temps are appr. 13 C. What I
am doing wrong? Any experience
with forward placed coolers ? Recommendations
?
Thanks a lot in
advance,
Peter
LNC 360 MKII, O360 F1A6, D-EPSO
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