Hi Paul,

Yes, the cowl was off. He had the radiator mounted below the belly to get

the cg right. I'm trying

to somehow convert the tape images of my video camera to digital format.

As soon as I succeed, I'll

post some pics. I took extensive footage of this aircraft.

I'm trying to find the builder via the net, but no luck. I'm keen to get

more info as until now I

though that what he did must be standard practice.

As soon as I find more detail, I'll post here.

Regards,

Hennie

**********************************************************************

Hi Hans,

Yes, it was a 13B installation on a Poliwagen. This builder definitely got

rid of his

complete oil system including oil cooler. I've got the video on tape to

verify this.

What amazed me more was that he was using regular engine oil and not two

stroke oil

as would be expected and when I talked to him he already had many problem

free flying

hours on this installation.

Regards,

Hennie

Wasn't the Poliwagen designed for 65 to 80 HP VW power?
If you don't run the engine hard it might be OK without
an oil cooler.  It must have been really nose
heavy. Was the 13B using a 12A water to oil heat exchanger
under the oil filter?

Did you see it with the cowl completey off Hennie?


Paul Lamar

Paul,
Have you seen the 12A oil coolers ( probably early types) which were just 6"
pipes and fins sitting under the oil filter. It could be the oil filter was
inverted  -can't remember. That was good for the power output for the stock
12A, for a time, 80 to 100 hp.
George (down under)

That was a water to oil heat exchanger George. The lowest HP 12A they
ever sold in any quantity was the engine in the RX2 at 130 HP at
7000 RPM. I had one.

Paul Lamar ...No rotor no motor.

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