Mark,
Do you have a link to your VW heater muff on your web site?
Mine has never been very effective using ram air from the nose bowl . Maybe I 
need a two stage setup to get more heat?
Canadian winters are a lot colder than the US south.
Thanks
Chris Gardiner
KR2S

Sent from my iPad

> On Jan 1, 2018, at 9:02 PM, Mark Langford via KRnet <krnet@list.krnet.org> 
> wrote:
> 
> > Has anyone considered using the oil cooler for cabin heat? What do you see 
> > as Pros and Cons (diminished chance of exhaust fumes, etc.)?
> > Thanks,
> > Rodger
> 
> Given that I've never flown behind an oil cooler heated airplane, I'm not 
> technically qualified to answer this, but I can't imagine how a small 175F 
> oil cooler can generate anywhere near the heat of a 1350F exhaust pipe.  Do 
> the math on that, and I think you'll agree.  And EGT is nice and toasty at 
> runup.  It may take 15 minutes for an oil cooler to get up to temp.  I think 
> if oil coolers worked well as heaters, Volkswagen would have use them rather 
> than dual exhaust heat exchangers.  Try it and let us know how it works 
> though.  I've yet to fly in weather cold too cold for my exhaust muff heated 
> plane to easily heat the cabin, even in the winter at high altitude with 
> outside air temps below zero.
> 
> I don't worry much about carbon monoxide.  I have a monitor on the panel and 
> I'm already flying behind a VW, with a header system that I built myself,  so 
> apparently I  have a death wish already....
> 
> Mark Langford
> m...@n56ml.com
> http://www.n56ml.com
> 
> 
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