I know when I started flying my KR it had retractable gear after the third time the gear unlock while I’m landing I decided to go with a fixed gear. I actually picked up 5 to 7 kn with a fixed gear and wheels all fared in. Plus I picked up ground clearance on my prop.
Sent from my iPhone > On Jan 21, 2019, at 10:10 AM, Richard Seifert via KRnet > <krnet@list.krnet.org> wrote: > > I've been following the airfoil thread and would like to add one thing. > Almost every modification you make to the original design will have an > up-stream or down-stream effect. Decisions on which airfoil you plan to use > will likely effect the type landing gear you will be happy with. > I chose the retracts because that was the only airfoil used when i was > building and I liked the challenge of flying a tail dragger. > The RAF 48 airfoil provided well documented flight characteristics with a > low stall speed. I found that airlfoil worked well with a light weight > KR-2's retract system with mechanical brakes. > However almost everyone in the KR community (including myself) made > modifications to the original design, which almost always increased the > aircraft weight. The increased aircraft weight and the increased stall > speed / landing speed of the newer airfoils quickly overwhelms the KR > mechanical brakes leading to longer runway requirements. > The KR retract gear system does not accept hydralic brakes easily, and I > believe that was the primary reason builders started switching to fixed > gear with hydraulic brakes. > I believe most successful builders will agree, the most challenging part > of the KR building process is improving the design, without adding weight > and reducing usefull load. > I guess the moral of my story is don't expect a Cadillac to perform like a > Mini Cooper in a slalom race. > _______________________________________________ > 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 _______________________________________________ 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
