O-290 is a bit big... Fuel burn of a 320 without the HP. O-290s - specifically the GPU variety converted to aircraft use - were once used for the 'next size up from a KR' scratch-built birds (T-18, T-40, etc)... Most of these designs, if built today, now use 320s. If you see an O-290 on ebay, most likely it either is or was an O-290G at one point (different mounts, 1 mag (2nd plug hole plugged with a bolt), and a special GPU sump and carbeurator)... The actual certified motors (And the 'right' certified parts) are somewhat rare now. Folks converted them to aircraft use by machining the mounts for 235-style conical mounts, adding a 2nd mag, and installing the appropriate aircraft sump/carb/etc (from a 235 or 320)....
As the 'missing link' between the narrow-deck O-320 and the O235, it will take some parts from those motors, but also has some unique ones of it's own... On 1/6/2012 4:18 PM, Rodger Nicolls wrote: > Netters, > What are your opinions on using an O-290-D Lycoming for the KR2-S? > (approximately 230-260 lbs dry weight and 125hp at 2600 and 130hp at 2800). > The weight is about the same as the Corvair, but the horsepower is a bit > more. What do you think? > > Rodger > _______________________________________ > 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
