Hi again Mark, Just for confirmation:
1. a Belly brake will have exactly the same desired effect then. 2. No need for both split flaps & a belly brake. If the above is the case, I'll not bother with the stub wings only split flaps, but only install a belly airbrake instead. Please be so kind as to confirm the above as it might just save me a lot of work.. Kind regards, Henni -----Original Message----- From: KRnet [mailto:krnet-boun...@list.krnet.org] On Behalf Of Mark Langford via KRnet Sent: Friday, 23 June 2017 5:27 PM To: Hendrik van Rooyen via KRnet <krnet@list.krnet.org> Cc: Mark Langford <m...@n56ml.com> Subject: Re: KR> Split flaps Henni van Rooyen wrote: > What was your experience with your split flaps? I intend to make split flaps > on the inboard wings only, all the way to the rear spar. I found a nice > picture where another builder did same & it's really easy to make. Split flaps work great! I chose split flaps precisely because they ARE very high drag...which is exactly what you need to slow a slippery KR down while landing. Mine are large chord (20%) and long (54" each on the outboard wings), and I'd certainly not call them "too much drag"...they slow you down, and provide more lift for that slower landing. But I only have 1130 hours on mine, along with several thousand landings, so I'm just getting started here. I've done go-arounds and left the flaps down, but it doesn't take long to figure out why the climb rate is suffering (down to ONLY 500 ft/min with a Corvair), and retracting the flaps fixes that situation in a hurry. Even with a VW, it will gain speed and climb nicely, so it's not like you're going to simply run off the end of the runway at full power. Having said that, I'm also a convert to the belly board concept, having installed one on N891JF. That works fine too. You get just as much board area as a two smaller flaps on the stub wings, there's no danger of a "split flap situation" where one is down and the other isn't, and it's far simpler to implement, especially after the plane is already built. See http://www.n56ml.com/n891jf/speedbrake/ and http://www.n56ml.com/owings.html . Mark Langford m...@n56ml.com http://www.n56ml.com _______________________________________________ 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
