It should be noted that the "stock" flaps in the plans didn't generate a lot of drag or lift, but were better than nothing. A belly board generates lots of drag, but not lift. But a belly board is really a patch for the lack of planning for adequate flaps in the plans.
While I chose to add flaps to my plane after 500 hrs of flying without flaps, I was able to make the flaps larger than per plans due to my aileron bellcranks and cross cable being located in front of the rear spar rather than behind the rear spar. That one change cascaded into a host of other changes and work-arounds, but did allow me to have a significantly longer cord to my flaps than what would normally be found on a KR. My flaps do seem to generate adequate drag and add a small amount of lift reducing the stall speed 2 or 3 mph. IMHO, if your KR is really clean, either will be a significant help during landing. -Jeff Scott Los Alamos, NM > > >Having read the ease of the Belly board construction I am wondering > >if the complexity of installing flaps is worth while ? I am at the > >point of finishing the stubs and starting flaps. Knowing what you > >know about belly board vs flaps would you guys install flaps? Is the > >additional low speed lift significant ? > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > I'm guessing the standard flaps on a KR2 do not generate a great deal > of lift or add significant drag on landing. Any drag on landing is > good on a KR. No reason you can't have both. I had given thought to > flap that, with additional movement of the actuator, deployed a speed > brake. If your KR complete is less than 650 pounds, I'd go with just > a speed brake. IMHO........ > > Larry Flesner
