Hi guys The position of your inlet and outlet is probably as inportant as their size. I build motor gliders and there is no worse scenario that an 80hp motor producing full power in a plane on clinbout that is only doing in the region of 100km/hr. Contact me privately for a way to solve the problem. You will be surprised at how small an oil cooler is necessary when it's inlet and outlet are positioned correctly. Regards Dene Collett Avlec Projects cc Port Elizabeth South Africa ----- Original Message ----- From: "R. Human" <rahu...@peoplepc.com> To: "'KRnet'" <kr...@mylist.net> Sent: Wednesday, September 15, 2010 7:40 PM Subject: RE: KR> still struggeling with high oil temps VW 2180
Jeff - I have some information attributed to John Thorp (but I can't point you to the source). He indicated that the total inlet size in sq inches should be the hp *.35. The exit air needs to be 2.5 times the exit air. I too had some oil cooling problems on my c-85 and found the exit air plays just as much in the cooling as the inlet air. In fact my exit outlet ended up being @ 2.85 times larger and I still see 200-210 degrees in mid-summer ( it does come down to 190-195 in cruise flight). I also played with a lip and it didn't help so I removed it. Hope this helps some. Rick Human N202RH Houston, Tx _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
