yes but does the enjoyment go hand in hand with speed after a point..... a lot of work for 10mph.....gain phill ----- Original Message ----- From: "Randy Smith" <[email protected]> To: "KRnet" <[email protected]> Sent: Friday, March 16, 2007 11:08 PM Subject: Re: KR> Speed vs. HP
>I understand speed and drag, I have 150 hp and get 205 > level wide open. No wheel pants no cuffs No faired in > nose gear. I will bet money he can get 235 mph or > better with pants and all faired in. > A KR all covered up is about as clean a plane as you > can get. > > --- Colin Rainey <[email protected]> wrote: > >> "You will probably see 250 mph with pants and 200 >> hp" >> >> It doesn't work like that in the air, like adding HP >> to a car and expecting >> speed increases. Mark's climb rate will definitely >> get a BIG jump, possibly >> the best in the bunch so far, if he can match a prop >> to it. But increasing >> HP does little to increase cruise or top speed after >> a point, especially for >> planes flying at or near 200 mph and up. >> >> Back a few months ago we discussed this at length, >> and all who have studied >> on this have agreed; more is gained by drag >> reduction than HP increase. To >> double the speed, drag is increased by 4 times. To >> get 250 mph from a KR2S, >> one needs to lose the front wheel, or work very hard >> on a completely >> aerodynamically faired leg, not just a cover, and >> the same holds true for >> the mains, and their legs. Now anything sticking out >> in the breeze becomes >> important; so that round strobe Mark has will have >> an impact at these >> speeds; any antennae should have a fairing, not just >> be left round; wing >> root fairings need special attention due to this >> area relating heavily to >> the highest lift area on the wing so also >> potentially the highest drag area; >> cowl flap(s) become a consideration to reduce drag; >> greater rake to the >> vertical stab, etc... >> >> "Speed with Economy" is definitely the bible here... >> >> There are a lot of pluses to using the Mazda 13B in >> aircraft with firewalls >> designed for their weight. But without alot of >> reinforcing, similar to the >> refit rebuild that the KR360 got, I think the Mazda >> is too heavy, and high >> output. Better to use a different engine with >> slightly less HP but just as >> much torque after the re-drive and stay with what >> your firewall/airframe can >> handle... >> >> JMHO... >> >> Colin Rainey >> [email protected] >> N96TA >> >> >> _______________________________________ >> Search the KRnet Archives at >> http://www.maddyhome.com/krsrch/index.jsp >> to UNsubscribe from KRnet, send a message to >> [email protected] >> Post photos, introductions, and For Sale items to >> http://www.kr2forum.com/phpBB2/index.php >> please see other KRnet info at >> http://www.krnet.org/info.html >> > > > > > ____________________________________________________________________________________ > Finding fabulous fares is fun. > Let Yahoo! FareChase search your favorite travel sites to find flight and > hotel bargains. > http://farechase.yahoo.com/promo-generic-14795097 > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to [email protected] > Post photos, introductions, and For Sale items to > http://www.kr2forum.com/phpBB2/index.php > please see other KRnet info at http://www.krnet.org/info.html > > > -- > Internal Virus Database is out-of-date. > Checked by AVG Free Edition. > Version: 7.5.410 / Virus Database: 268.17.15/659 - Release Date: > 30/01/2007 09:31 > > -- I am using the free version of SPAMfighter for private users. It has removed 25502 spam emails to date. Paying users do not have this message in their emails. Get the free SPAMfighter here: http://www.spamfighter.com/len
