Chris, My plane wingspan is 24.5'. I used the AS45048 airfoil at the root, and the 5045 at the tip. The H/S and V/S airfoils came with the wing airfoil download. The H/S is 12 inches wider than stock. I kept the elevator area the same which effectively creates a larger H/S. I added an extra bay (14") aft of the spar and about 2" forward of the forward spar. Do not add any length forward of the spar. With the heavier engine, my cg is more forward than typical. I can load items in the cargo, and have no worries about aft CG. The fuse is about 4 inches wider and the widest point is at the aft spar. Plenty of room for hips and shoulders. At 2500 rpm, it cruises at 160+ mph. On happier days, 167 mph. I flew a box pattern at 3500, 7500, and 12500 to get the GPS speeds for averaging. I have not flown enough trips to find the best speed/range, but 2450 rpm seems to be where it ends up. My plane is heavy at 865 lbs. The one piece wing and engine being the major contributors to the heft. The wing design allowed for adding flaps. The airport I now fly out of has a 2600' runway, and the flaps do help. The flight controls are light and quick, with no unwanted tendencies at stall.
Roger > On April 11, 2019 at 8:04 PM Chris Matheny via KRnet <krnet@list.krnet.org> > wrote: > > > I'm curious on the performance numbers and specs like wingspan, max weight, > tail dimensions and handling on Roger Baalmans KR2S with the extra tail > length and the o-235 engine in it. Anything you would do different or > change? I'll be starting a build this summer an want to do a 26' wing with > the longer fuselage and wider tail and use a 150hp engine I'm developing > now. Thinking 1300 max load. I'm curious of the performance you're getting > with the 125hp engine??? Thanks _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
