Tosh McCaber Posted July 16, 2023 Share Posted July 16, 2023 (edited) I have a foam core retrieved from the loft which may belong to a Wot 4 or? It's a tapered wing. So I'm not sure. Can anyone give me the wing dims please- Wing 1/2 span, root chord and tip chord? Thanks in advance! Edited July 16, 2023 by Tosh McCaber Quote Link to comment Share on other sites More sharing options...
Tosh McCaber Posted July 16, 2023 Author Share Posted July 16, 2023 Just done the research that I should have before posting! Parallel chord wing! So I'm still at a loss as to what I have! I'll just make up a fuselage and tail feathers in the workshop to go with it! Quote Link to comment Share on other sites More sharing options...
simon barr Posted July 16, 2023 Share Posted July 16, 2023 It may still be a Wot4 wing, as the mark 3 (I think) had a tapered wing... straight LE, tapered TE. Afraid I don't know the dimentions, but the standard "straight" wing Wot4 was 52 inch span. Quote Link to comment Share on other sites More sharing options...
kc Posted July 16, 2023 Share Posted July 16, 2023 It could be the tapered wing version of Wot4 which was 57 inch span I think, or it could be an AcroWot at 58 inch span. Or it might be a lookalike version of the Wot4 which was called Watt Four also known as Devil Dancer. You can find the Watt Four on Outerzone. Quote Link to comment Share on other sites More sharing options...
kc Posted July 16, 2023 Share Posted July 16, 2023 If it is still unjoined foam wings then it's important to draw around the wing root section to get the shape for a fuselage. Once joined its too late and very difficult to match to a fuselage. A 1 minute job before joining , an hour or more after! Quote Link to comment Share on other sites More sharing options...
John Lee Posted July 16, 2023 Share Posted July 16, 2023 I've still got my Wot 4 Mk3 which I built in the mid 90's. I glassed clothed the fuselage plus epoxy coated the inside & glosstext'd the flying surfaces which made it pretty much indestructible. The dimensions you are looking for are: Span 56" (142cm) Centre chord 12.5" (32cm) Tip chord 9.5" (24cm) Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted July 16, 2023 Share Posted July 16, 2023 5 hours ago, Tosh McCaber said: Just done the research that I should have before posting! Parallel chord wing! So I'm still at a loss as to what I have! I'll just make up a fuselage and tail feathers in the workshop to go with it! I've got a parallel chord, old school Wot 4 Tosh, so will make those measurements once I get into the workshop tomorrow and let you know. Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted July 17, 2023 Share Posted July 17, 2023 Tosh - some dimensions as promised - I've excluded the obvious balsa trailing edge and tips, but not the leading adge, as you can't see that under the film. Classic Wot 4 parallel chord wing 1/2 span = 600mm (23.5") excluding wing tip Winch chord - 240mm (9.5") excluding balsa trailing edge Wot 4 Mark III Tapered wing 1/2 span 710mm (28") Root chord 280mm (11") excluding TE Tip chord 200mm (8.5") excluding TE Uno Wot wing 1/2 span 780mm (30.5") Root Chord 230mm (9") excluding TE Tip Chord 175mm (7") excluding TE. Hope that is useful, even if it is only useful in eliminating what you don't have. Quote Link to comment Share on other sites More sharing options...
David Davis Posted July 17, 2023 Share Posted July 17, 2023 This is what the two different versions look like. Quote Link to comment Share on other sites More sharing options...
Andy Stephenson Posted July 18, 2023 Share Posted July 18, 2023 It looks like an Acro Wot wing, although Chris Foss may have used the same one for the Wot 4 Mk3. Quote Link to comment Share on other sites More sharing options...
David Davis Posted July 18, 2023 Share Posted July 18, 2023 The Mark 3 wing is a little smaller than the Acrowot wing but I'll agree that they look very similar. Quote Link to comment Share on other sites More sharing options...
Ace Posted July 18, 2023 Share Posted July 18, 2023 A kit Wot4 mk3 (left) and Artf Acrowot wings with a 1m rule for scale. Quote Link to comment Share on other sites More sharing options...
David Davis Posted July 18, 2023 Share Posted July 18, 2023 The Mark 3 wing is a little smaller than the Acrowot wing but I'll agree that they look very similar. Accoding to the Steve Webb website, the WOT 4 Mark 3 has a 56" wingspan while the Acrowot has a 58" wingspan. Quote Link to comment Share on other sites More sharing options...
Tosh McCaber Posted July 18, 2023 Author Share Posted July 18, 2023 Well, After me thinking that the W$ was a parallel wing thing- many thanks for all the info guys. I shall shuffle up to the loft to check things out! Quote Link to comment Share on other sites More sharing options...
kc Posted July 19, 2023 Share Posted July 19, 2023 Looking at Ace's photo of his two wings I wonder if the caption is correct? Is that really the Wot4 Mk3 on the left? Or perhaps it is and the ARTF Acrowot is very different to kit built ones! The Acrowot in the photo looks smaller in root chord than the Wot4........ My kit built Acrowot has a 12 inch root chord which is more than the 11 inch specified by Leccyflier for the tapered wing Wot4 Mk 3. So a kit built Acrowot has a 12 inch root, 8.5 tip and 57 inch span - depending on how it's built. Some people might sand the cores to allow dihedral or just to fit maybe changing the span a bit. . They might also cut away the balsa TE to make a parallel part where it fits on fuselage changing the root chord measurement of a finished wing. Anyway there should be enough data to allow Tosh to know whether has a Wot wing or not. Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted July 19, 2023 Share Posted July 19, 2023 (edited) Note that, since Tosh was working with foam cores the specs I gave him was for the chord, minus the balsa trailing edge, which is about an inch wide on the Wot 4. I can't see, under the covering, how wide the leading edge strip is - I suspect half an inch. That said - if the foam cores are from a Wot 4 there is a chance that they have been cut at home - which used to happen quite a bit - as my recollection is that to get a cowl, or a wing, from Chris Foss, you needed to provide a lot more than just name, rank and serial number, precicely to try to cut down on the number of knock-off copies of the Wottie. I had a clubmate back in the day, who had been learnign to fly for years, used to break his Wot -4 every weekend, then repair it for the next weekend. If it was a particularly spectacular arrival -once or twice a month - he'd build a new one from scratch, before the next flying session. Edited July 19, 2023 by leccyflyer Quote Link to comment Share on other sites More sharing options...
kc Posted July 19, 2023 Share Posted July 19, 2023 The bare foam cores for an Acrowot should be 10.75 inch chord at root and then 1/4 inch balsa LE and 1.5 TE ( aileron stock) added. When trimmed and LE rounded it became 12inch at fuselage. Thickness at root is 2inches. Thickness at tip is 1 and 7/16 inch ( 1/16 under 1.5inch ) I have just measured my template produced by drawing around a genuine Acrowot kit wing ( for use in case of accident! ) The Wot4 tapered wing may well be just the same as an Acrowot with slight change at tips ( angle of cut ) and Tosh's core will surely make a good high wing model if its anything like this spec. Note that a standard wing could not be used alternately on either model once built - a high wing would have the central servo underneath and low wing on top. Plus any raking of torque rods to give differential would be opposite. 1 Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted July 19, 2023 Share Posted July 19, 2023 1 hour ago, kc said: The bare foam cores for an Acrowot should be 10.75 inch chord at root and then 1/4 inch balsa LE and 1.5 TE ( aileron stock) added. When trimmed and LE rounded it became 12inch at fuselage. Thickness at root is 2inches. Thickness at tip is 1 and 7/16 inch ( 1/16 under 1.5inch ) I have just measured my template produced by drawing around a genuine Acrowot kit wing ( for use in case of accident! ) The Wot4 tapered wing may well be just the same as an Acrowot with slight change at tips ( angle of cut ) and Tosh's core will surely make a good high wing model if its anything like this spec. Note that a standard wing could not be used alternately on either model once built - a high wing would have the central servo underneath and low wing on top. Plus any raking of torque rods to give differential would be opposite. That's correct in theory. Don't ask what happened with my first low winger though......:D Quote Link to comment Share on other sites More sharing options...
kc Posted July 19, 2023 Share Posted July 19, 2023 I won't ask then - I assume you just put the servo under the wing but it would be worse if you got the differential the wrong way round! Putting two small servos side by side in the central cutout would be a way to get differential right and would seem better anyway than hacking into a foam wing to fit 2 servos out in the wing. 1 Quote Link to comment Share on other sites More sharing options...
gangster Posted July 19, 2023 Share Posted July 19, 2023 So how many different Wot4 wings are there? A few years ago I built a wot 4 from the original plan, the original wot 4 from when it was a plan pack not a kit. I was given a wing from kit built wotty and it did not fit. I used a built up wing. Quote Link to comment Share on other sites More sharing options...
Tosh McCaber Posted July 20, 2023 Author Share Posted July 20, 2023 Ah well, At last, climbed up to the loft. I now have the dims of all variations that you've mentioned in your posts (thanks for every variation Leccy!) Unfortunately, none match the core wings that I have, which are- Span 31" Root chord 8.5" Tip chord 6.5", with bevels on the lower sides of the wing tips I guess I'll plot a fuselage around the wings! Thanks for all the input anyway- it seems to have made for good chat, as always, in the forum! Quote Link to comment Share on other sites More sharing options...
simon barr Posted July 21, 2023 Share Posted July 21, 2023 Could be a wing for a Uno Wot. Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted July 21, 2023 Share Posted July 21, 2023 I posted the dimensions of the Uno Wot wing above. If the leading edge were 1/2" stock balsa then that would indeed pretty much fit the dimensions that Tosh cited. From memory, the angled tip plates were 1/4" balsa. If Tosh wants to bring the cores to the field I'll bring my retired UNo Wot and we can compare the section. Quote Link to comment Share on other sites More sharing options...
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