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John,
does your re-builder think that you will still be able to run 38"
MAP continuous or does he think you will have to back off? Did he
recommend a max EGT? Any comments on running lean?
I have
over 40 hours now on mine running mostly in the mid 20's of MAP at higher
altitudes. Its working great so far. I'm just waiting for you to
test another one to destruction to see exactly how hard I can push mine
:-)
BTW,
does anyone know how fast Tracy let his old prop turn? What size is
it? Rusty?
Dave
Leonard
> By the way I work just a few minutes
from ATS Turbonetics and will be taking to them soon to mod the turbo so
ill
> let you
know what they say.
That's interesting. I just got off the phone with Max
Heywood (owner of ATS). My turbo has just been rebuilt and modified per his
web page (at a very reasonable price) and will ship back to me
today/tomorrow.
We also talked about controlling the wastegate. Max
feels I should use the stock boost controller and make it adjustable either on
the ground or via a cockpit control. He's going to send me a info on how to do
that.
Here are Max's comments on what happened to my old
turbo:
3 things can cause a turbine wheel to drop off
that I'm aware of 1/Overspeeding, 2/ Excessive Heat 3/ Fatigue (from old age)
or any combo of these. The larger compressor wheel will slow down the
rotational speed of the rotor assembly which will help overcome
overspeeding.
He wants me to check that I have
a minimum of 250 ML /min oil flow from the turbo at idle to eliminate item 2.
Item 3 is no longer applicable since the turbo is now rebuilt to his exacting
standards of precision and balance.
John Slade (almost done fixing the
roof)
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