---------------------------------------------------------- Seaplane-List Digest Archive --- Total Messages Posted Fri 06/15/07: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:22 PM - Re: Float performance tool (John A. Nielsen) ________________________________ Message 1 _____________________________________ Time: 03:22:15 PM PST US From: "John A. Nielsen" Subject: Re: Seaplane-List: Float performance tool I entered my plane's data and it predicted 11 seconds. Proven by this video taken Sunday, my take off is more like 6 seconds. http://www.youtube.com/watch?v=iEQ-1yzL8XE John Nielsen Bloomer WI Challenger II on Puddle Jumper Amphibs Peter C wrote: > Would any of you guys on floats provide some examples of what take-off > times > you are getting? > The attached spread sheet contains a simplified version of the formula on > the Stinson site. This one just multiplies wing loading, power loading and > float loading times a constant. > > The two Rans examples look pretty good in that they are close to my actual > numbers. The 170 number is also pretty close. The original formula gave > me a > time of 5 or six seconds which is way off. If you play with different > weights this one seems to work. Not sure if variations in hp work as well. > Since I'll also be trying two more sets of floats on this plane the affect > of buoyancy will also be stest. > Peter > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message seaplane-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Seaplane-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/seaplane-list Browse Digests http://www.matronics.com/digest/seaplane-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.