Tim Hooper Posted April 29, 2011 Share Posted April 29, 2011 Just blowing the dust off another old model for the coming season's flying! The (2004) Quad was built following the succes of the (Peter Rake) Triplane, and is actually the first model that I ever designed from scratch. No point in messing about with a simple one, eh? Information about the original is pretty scant, but I found a 3-view on the net and worked from there. Actually, it's pretty straightforward and looks a lot more complicated than it really is. All the wing panels are virtually identical to each, the tail is cut from bits of stripwood, and the fuselage is just a square-section box (with stringers stuck on. I doubled the areas of the tail surfaces as thay looked a tad small to my eye! The Quad spans a huge 34" and weighs a coincidental 34oz. Power is from a little Typhoon 15/10, spinning a 10x5 prop. Originally fitted with 7x1300 nicads in the cowl, it now sports an 3S 1800 li-po instead. Mind you, 4 of the original nicads have been kept as ballast. All 8 ailerons are couple together, and little bit of rudder is mixed-in. That, allied to the all-flying tailplane, keeps things quite lively in the air, although the Quad is eminently controllable for all that. The model is covered in Litespan and silver Solite. As is my habit with multi-wingers, the wings uplug as handed cells for storage/transport without any fuss, and are retained to the fuselage by a single flying wire that runs from the front undercarriage leg to the top of the outer strut. Works well, and avoids undue messing about at the field! Hope nobody minds me showing this too much! tim Edited By Tim Hooper on 29/04/2011 10:38:00Edited By Tim Hooper on 29/04/2011 10:39:26 Quote Link to comment Share on other sites More sharing options...
kiwi g Posted April 29, 2011 Share Posted April 29, 2011 Nice model tim , any thoughts as to your next project . you seem to pick interesting subjects, very enjoyable to watch the threads build Keep up the good work Quote Link to comment Share on other sites More sharing options...
James40 Posted April 29, 2011 Share Posted April 29, 2011 Wow, fantastic looking plane there Tim. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted April 29, 2011 Share Posted April 29, 2011 Fantastic as ever. Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted April 29, 2011 Share Posted April 29, 2011 Always great to see this one Tim Quote Link to comment Share on other sites More sharing options...
Klippy Posted April 29, 2011 Share Posted April 29, 2011 Show off! Mind you, it's well worth seeing, got any more to dust off? Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted April 29, 2011 Share Posted April 29, 2011 Superb from every angle Tim. TW2. Quote Link to comment Share on other sites More sharing options...
fly boy3 Posted April 29, 2011 Share Posted April 29, 2011 Hi Tim, are all the wings at the same incidence ?, and if so how did you arrive at the correct angle initialy. Cheers Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 29, 2011 Share Posted April 29, 2011 Lovely model Tim. As you know I'm a sucker for a bipe - a quad is twice as nice! BEB Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted April 30, 2011 Author Share Posted April 30, 2011 Many thanks Gents! To answer a couple of the questions asked;- kiwi, I'm not entirely sure about the next project as yet, but sometime inthe future I'd like to do a bigger Quad! I have this hazy dream about a Dawn Patrol-sized 1/3 scale Quad pottering about the skies! Although such a model would 'only' have a span of just over 9 feet, it would stand 4 feet tall! Sadly I have neither the resources or skills to carry this out successfully at the moment. Mind you, it's not out of the question that I might compromise and go for, say, a 60" version sometime in the next year or so...... If anyone is interested the RC Groups build thread of my little 'un can be found here; Quadruplane build thread Tony, I've got a couple more I could showcase, but I'm a bit reticent as they were published by another magazine and I don't want to abuse my priveleges on this forum! Perhaps Timbo or BEB could look into this for me? fb3, Funnily enough, setting all the wings at the same incidence is so unbelievable easy to do! I use the following method on all of my multi-wingers. After deciding that simply setting the flat undersides of the wings parallel with the fuselage datum would be sufficient I headed for the scraps box and, working over the plan, I knocked up a 'ladder jig' from balsa strip and clamped this to the side of the fuselage when working on the wing root attachments. Later on, the jig is simply moved outboards when working out the interplane strut. Using bits of packing, you can allow for tapered panels, different dihedral amouts, etc. In fact, I've used the same idea to set the wings on the latest (Cygnet) project, using a packing piece on the lower 'rung' of the ladder to build in the dihedral on the lower wing. Easy peasy, and keeps everything aligned!tim Quote Link to comment Share on other sites More sharing options...
fly boy3 Posted April 30, 2011 Share Posted April 30, 2011 A ladder jig, so simple ,easy to make and use. I like it a lot. Thanks Tim, Cheers Quote Link to comment Share on other sites More sharing options...
Josip Vrandecic -Mes Posted April 30, 2011 Share Posted April 30, 2011 Hi Tim , really great job rgds Jo. Quote Link to comment Share on other sites More sharing options...
Hugh Coleman Posted May 3, 2011 Share Posted May 3, 2011 What a little ripper. Must have been a bit of a pain to balance the CoG. Cheer, Hugh Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted May 3, 2011 Author Share Posted May 3, 2011 Thanks Hugh! Actually the CG was a doddle to work out - all the wings are identical and evenly spaced, so I drew an imaginary line between 25% MAC on the upper wing, down to 25% on the lower wing. Half way along that line is where the CG landed! Easy peasy..... tim Quote Link to comment Share on other sites More sharing options...
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