hi all, I was searching the KR messages database (HUGE advantage to have that resource) for stall speeds and flight test speeds etc. I also found in the archive pages somewhere, a nice excel spreadsheet of about 2 dozen kr's with specs, stall, top, engine, configuration, prop, etc. richard shirley's clean KR was the top performer. of course it has tapered wings and a lot of power in both entries, a Jabiru 3300 and a 2180, 235mph and 215mph respectively. >From a quick look at pictures of this plane I can assess that it is the top of >the performance envelope for this design, and it doesnt even have KR wings. >troy petteway's KR2 with modified C-85 at 125hp delivers 230mph on presumably >stock wings(?) the next one down is mark langford at 192mph, and then its the "normal" 140ish to 175ish top speeds. Is Rich Shirley and his KR still around I wonder? (I saw a post from 2008 where is was thought to have sold it), and troy still flying his? I wonder what fast KR's will be at the gathering which I might be attending. as to my strategy, I plan to build a mostly "stock" KR1. no need to worry about any exotic changes of any kind. In fact depending on 3rd class medical reform, I may just build to meet LSA specifications. We'll have to see. as an aside, I have learned about pitch instability and particularly from jeff Scott's tail experiences and flight test reports. It looks like a slightly enlarged horizontal stabilizer and even vert stab / rudder for that matter would not be a bad mod to do when building, and doesnt seem too radical at all to add a few inches there.
