Sid, I used the fins on the bottom of the case to help cool the oil. Not sure how much it helps. IMHO, full flowing the oil and a quality oil cooler are the most important factors. I tried numerous things early in my flight testing period to keep the oil cool but changing to full flow and a Mocal 13 row cooler (from one of those stamped pieces of crap) took my oil from 250F to 190F. Oil temps are the nearly the same if I am in a climb, cruising to a destination or full throttle for 2 hours during a race.
I am currently reworking my entire cooling system and will not flow air across the bottom of the case. I don't feel that its worth the effort. Jeff Lange On May 29, 2013, at 2:40 PM, "smwood" <smwood at md.metrocast.net> wrote: > Appreciate all the commentary and suggestions. > I think I have a reasonable bracketing on various recommended temperatures > except for the oil temperature (251 F). The newness of the engine may be > contributing some extra heat. Another factor could be the prop: I don't know > for sure if the Sterba 52X52 prop is right for my airplane. Might be lugging > to much and producing more heat and less power. I will have to play with the > engine tuning for next flight. > My plan is to keep the existing oil cooler setup. Added will be to blow some > fresh air on the bottom of the engine sump. The sump has cast ribs and some > tapped holes; just the thing to fasten some sheet metal. I saw a baffle > arrangement on a KR website, but cannot find it now. I remember how that > looked and can adapt that baffle arrangement to my VW installation. Also > means yet another mod to the cowl and even more down time. Gotta do what you > gotta do. > Does anyone have any info on cooling the VW oil sump? > > Sid Wood > Tri-gear KR-2 N6242 > Mechanicsville, MD, USA > > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options
