Geoff N Posted October 17, 2009 Share Posted October 17, 2009 Hi, I have an old Falcon Aviation Eurobat plane that used to fly well on a 35CC petrol engin, its 84 inch span. But now the engine is a bit sick and and I no longer have a flying site suitable. I was wondering is it worth ditching the engine bolting on some lead and a nose cone of some sort and chucking it off a hill in 25 mph?Will it be worth the effort or will it be a brick ? weight 8.2 Kg, wing area 6360 sq cm inner chord 43cm outer chord at wing tip 31cm span 212 cm Geoff Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 17, 2009 Share Posted October 17, 2009 Of course it is...chucking anything off abig hill is always fun Quote Link to comment Share on other sites More sharing options...
Former Member Posted October 17, 2009 Share Posted October 17, 2009 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted October 17, 2009 Share Posted October 17, 2009 Posted by Phil Wood - Moderator on 17/10/2009 16:36:27: .......You could Google "PSSA" and see what those guys think.................I'd just chuck it and shout "DEADSTICK" Polyphilla. go on phil 'sss.....if it dont work-it'll be a load of dead stick's....... ken anderson....... 's Edited By ken anderson. on 17/10/2009 17:08:42 Quote Link to comment Share on other sites More sharing options...
Geoff N Posted October 17, 2009 Author Share Posted October 17, 2009 I have registered on the PSSA forum but will have to wait 24 hours for access. Googles first hit is the Prison Service Sports Association I doubt if they manage to get to any good flying sites. I used metric measurements cause I thought imperial would confuse all the youngsters on the forum. Weight 18 lbspan 84 inches or 288 ozchord 17 inchs innerchord 12.2 inches outertherefore wing area is 1689 sq inch or 11.66 sq ftWing loading is 1.54 lb per sq ft or 24oz per sq ft.I dont normaly dable in the dark arts of wing loadings and Reynolds numbers . so would it be a floater or an ingot. The wind airofoil is fairly thick and semetrical . But on the other hand if some bloke called Christophe can do this with a Zlin Why can't I ?. see for the video http://www.slopeaerobatics.com/?q=node/164 Quote Link to comment Share on other sites More sharing options...
Former Member Posted October 17, 2009 Share Posted October 17, 2009 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 17, 2009 Share Posted October 17, 2009 Having said that.... 7' wingspan and 18lb AUW its not exactly gonna be a floater is it ! Quote Link to comment Share on other sites More sharing options...
Former Member Posted October 17, 2009 Share Posted October 17, 2009 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Geoff N Posted October 17, 2009 Author Share Posted October 17, 2009 It may only be 7 ft wing span but its got a 17 inch cord, so its a fair old one piece plank.. Even I can hide behind it with nothing showing (just) I'm going to find a cowl / flowerpot and chuck it and see . Any suggestions for a cowl? Roll on the Autumn gales.I may need to recruit a shot putter to launch the thing though especially as its a low wingerRoll on the Autumn gales. Geoff Quote Link to comment Share on other sites More sharing options...
Peewhit Posted October 17, 2009 Share Posted October 17, 2009 I reckon, like Phil, about 42oz per square foot. Should be OK in about 50mph on a good slope. Recommend-- 1. get a new engine 2. wait for a good blow that you can't stand up in 3 go get a 60" wild thing Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 17, 2009 Share Posted October 17, 2009 17" chord is a big un I grant you - ooo err missus - but nonetheless, I still wouldnt fancy throwing it off anything high in less than a really good "lifty" wind. We know how easy the dreaded sink can suddenly appear, or how the wind direction can shift slightly, and suddenly you could be running downhill looking for a very heavy plank - and praying on the way down that you dont find it sticking out of something it shouldnt beThat huge B52 bomber of Simon Cocker's is a smaller chord wing... but it only weighs 2/3rds of what yours does Quote Link to comment Share on other sites More sharing options...
Alex Leigh Posted October 18, 2009 Share Posted October 18, 2009 Geoff - I reckon you'll need a couple of us to chuck that. Or a catapult. Or maybe a seige weapon Can't wait to see that go off North Hill in a gale. I'll bring my tin hat! Quote Link to comment Share on other sites More sharing options...
Geoff N Posted October 18, 2009 Author Share Posted October 18, 2009 Alex, I was thinking Down the hill on a mountain bike should get enough air speed .That makes you prime suspect for the launch .I obviously miscalculated above 42 oz per sq ft is right so the eurobat is defiantly a brick . I cant afford a new engine and I still have the scars from starting this engine with a 20 inch prop by hand. Already got a 60 inch wild thing. I'm thinking sell it and put the proceeds towards getting a Fox or JART Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 18, 2009 Share Posted October 18, 2009 ooooo Jart Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted October 18, 2009 Share Posted October 18, 2009 have a look on the 'Lift Ticket' dvd..............there's a 1/3 or 1/4 scale mustang getting thrown of the slope...somewhere in the u s of america...it end's in ..........+ ... ken anderson.......... Quote Link to comment Share on other sites More sharing options...
Alex Leigh Posted October 18, 2009 Share Posted October 18, 2009 Geoff - I'd be up for that Maybe we could rig it up behind Roger's bungy. Almost limitless potential for broken bones there. Only Jart I've ever seen spent most of its' time in deep subs soil experiments. It's very, very fast. Timbo has one that's been *ahem* repaired a few times but as you can see he loves it. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 18, 2009 Share Posted October 18, 2009 Oh yes.... I am fully paid up member of the PNF club dont ya know! Edited By Timbo - Moderator on 18/10/2009 17:14:32 Quote Link to comment Share on other sites More sharing options...
Geoff N Posted October 18, 2009 Author Share Posted October 18, 2009 I wondered where the name Jart came from. Wikipedia quote "Lawn darts (also called Jarts or yard darts) is a lawn game for two players or teams. A lawn dart set usually includes four large darts and two targets. " So who's the targets?for more info visit the aptley named site below. http://www.tossinggames.com/ Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 18, 2009 Share Posted October 18, 2009 Indeed.... one of the two "recommended" methods of landing your jart is to adopt the missile stance and head for some soft stuff and whack it in nose first. The other requires a tad more skill and deploys spoilerons to apply some braking, and drop her in flattish from a virtual stall. Needless to say, "The Big Rock" requires method 2 if you are to take her home in similar condition to that as she was when brought, even then.... the Gelcoat likes to split and flake off even if you just stare her out Quote Link to comment Share on other sites More sharing options...
Former Member Posted October 19, 2009 Share Posted October 19, 2009 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Former Member Posted October 19, 2009 Share Posted October 19, 2009 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Former Member Posted October 19, 2009 Share Posted October 19, 2009 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Alex Leigh Posted November 2, 2009 Share Posted November 2, 2009 Should have had it out yesterday Geoff. We could have flown anything in that wind Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.