I don't know if the vanagon compressor is sucking that much, but even
so, it's no wonder the WBX'r drops rpm's when the compressor kicks in!
Often times I shut it off to climb a grade just to get a little extra
oomph and to keep the temps down.

On Aug 28, 2007, at 7:09 PM, Rob wrote:

> At  8/28/2007 05:51 PM, Keith Ovregaard wrote:
>>  IIRC, most compressors rob about 5
>> horse power from the engine.
>
> When they added a freon A/C compressor to the tailrotor drive shaft of
> the HH-65A helicopter (it was an automotive compressor and this was in
> the late 80's) they told us it took 14 hp to operate.
>
>
>
> Rob
> becida@comcast.net