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Hi Greg,
Dennis' Coupe has more drag due to two large venturis as opposed to
one small one on mine; landing lights on the gear legs, and I have none;
a bubble windshield and mine is flat; more antennas than mine; and no
nose gear fairing, but I have one. Also, in order to go the same
airspeed with the added drag, he would have to be turning more rpm. I
believe his tachometer reads low, maybe 100 rpm or more. Neither of us
leaned, and he didn't follow directly behind me, so I don't think he was
making a lot of power adjustments. I think the drag is the reason. I
don't know his empty weight, but remember, I was carrying a passenger
and he was not. His carburetor could be set richer too. No, I don't
have an EGT, but have had no problems with valves or oil temps. In
fact, my oil temps were usually about 10 degrees less than Dennis'.
Syd
Greg Bullough wrote:
> At 10:46 PM 6/25/2003 -0500, Sydney Cohen wrote:
>
>> We both have D models, both have 85 hp engines, both have 71 x 48
>> props, both ran 2450 rpms, both flew at the same airspeed (we were
>> together) and I had a passenger and Dennis didn't. Explain that one
>> if you can. I can't. But I'm happy. :-)
>
>
> There can be one and only one explanation...Dennis is running a richer
> mixture.
>
> Probably richer than necessary. That said, 4.25 gph at cruise is
> suspiciously towards
> the lean side of things except at 10,000 feet. Do you have an EGT?
>
> Greg
>
>
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