On 15/09/10 11:34 AM, "rotaryeng" <rotaryeng@earthlink.net> wrote:



We got the plane up in the air again, there was gobs of power,
the temps stayed low, no higher than 160 for oil and coolant,
but CO in the cockpit reached 300 PPM so it was only one circuit
of the traffic pattern and a smooth landing. That SS flex
exhaust tube is getting replaced tomorrow with the inconel. Also
going to make sure the firewall is well caulked.


  At full throttle the engine is missing a bit, I think it's too
rich. The pilot was going to play around with it a bit but due
to imminent danger of CO poisoning he decided to land it. I'll
take it up on the next flight after some Van's familiarization
flights and exhaust refit.

I'm using the stock 13BREW O2 sensor, Tracy- is that the one
recommended for the EM2? It seems that the EM2 mixture graph
shows about 3/4 rich, so I lean it out slooooowly, and it
doesn't have a sweet spot- it just goes to about 1/3 scale.
There seems to be no in-between.


But, the plane flies nicely, like an RV should.

Next flights will be in a few days.

Brian Trubee

I don't think it is the flex tube. I just installed some
in the race car.

I think you have a low pressure in the cockpit.

Paul Lamar

Congratulations Brian,

What are the dimensions of your radiators and do you have photos of your ductwork?

Steve Izett


I have some, Here they are. As you can see Brian added sheet metal
below the fuse to enclose the quick and simple rad configuration.
Cosmetically and functionally it worked quite well but the weather
up there is not exactly hot this time of the year. It is much easier
to cool up in the north than down here in the southern desert:)

The newsletter will shut down at 12.00 noon PST USA for about
3 days while I drive cross country.

Paul Lamar