No I haven't been up that high. However I had a 30" map climb from 0 to
12000' at mtow two days ago and no issues. Max temp was 225f.
The mechanical acts as a emergency system if you like. Mine has three
pumps altogether....two Bosch electrical and the standard mechanical pump.
There is also a return line from the fuel regulator. All my fuel lines are
firesleeved as well.
So the way I see it is that the mechanical pump would not provide take off
power at my airfield (8500) but would be sufficient to maintain altitude.
The mechanical pump alone provides about 27" so that should be sufficient
to take off at sea level.
All that said I use100ll exclusively.
The machical pump is cooled by a 1/2 hole in the cowling.
Will
On Dec 28, 2017 16:06, "Roland" <schmidtroland@web.de> wrote:
Ah okay. Being independent of electricity is an advantage for sure. But how
about vapor lock? Did you experience any in hot temperatures/high altitude
when running the mechanical pump?
I think in that regard the position of the two electrical pumps
behind/below the tank is optimal. I've been up to FL200 in summer with
Premium 95 car fuel without problems.
Regards
Roland
PH-ZTI
XS TG 914
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