Monz Posted January 10, 2016 Share Posted January 10, 2016 Looking good Dave. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted January 10, 2016 Share Posted January 10, 2016 Looks solid enough Dave, I imagine pulling in the tail end is more straightforward, both be same strength, unlike balsa which can want to curve different. John Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 10, 2016 Author Share Posted January 10, 2016 Posted by john stones 1 on 10/01/2016 01:59:34: Looks solid enough Dave, I imagine pulling in the tail end is more straightforward, both be same strength, unlike balsa which can want to curve different. John True I have yet to chamfer the tail where they join, as it stands the stern post is 12mm across, so I will have to chamfer it down inside to 3mm per side - I will also be inserting triangular shaped pieces in between the sides top and bottom, to ensure the shape is true and to complete a box structure for strength - it will also form the "tube" for running the control rods down Edited By Dave Hopkin on 10/01/2016 02:12:44 Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 10, 2016 Author Share Posted January 10, 2016 Fuselage going together: Rear end chamfered at the rudder post and some 1mm ply load spreaders added for the tail skid - when the alphatic dries t'other half can go on Plenty of shuffle room for Lipo positioning as the battery box runs from the F3 line to forwards of F1 Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 10, 2016 Author Share Posted January 10, 2016 If you squint it actually looks a bit like its supposed to look.... ish Weight 222g (7.8oz) Edited By Dave Hopkin on 10/01/2016 12:25:18 Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted January 10, 2016 Share Posted January 10, 2016 Dave That is very neat. I am following with interest. My only comment is that there seems to be quite a bit of wood in your 'Depron' Ballerina! Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 11, 2016 Author Share Posted January 11, 2016 Plodding on.... Battery hatch, cockpit floor and rear turtle deck added (got a bit of remedial work on the side of the turtle deck thats not in the photo....) Need to fit the motor and do the cowl and make the rudder/tailplane so I can run the control rods before closing in the bottom part of the lower fus box..... Need to get some more 6mm Depron and some odds and sods - so a trip to webbies is on the cards for the morrow SHMBO likes the shops there.... especially the cake shop! Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted January 11, 2016 Share Posted January 11, 2016 Looks like a Ballerina Dave I can see 1 join on the rear deck, is other one piece ? Looks sturdy enough John Quote Link to comment Share on other sites More sharing options...
AVC Posted January 11, 2016 Share Posted January 11, 2016 Looks good Dave Is the aft half covered with "black" depron? is it because it's harder? Sorry, I'm learning now about depron... Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 11, 2016 Author Share Posted January 11, 2016 The rear turtle deck is covered in (almost) on piece for a little added strength and one less glue joint! There is a bit of a gap on the far side I will have to add a sliver too but thats more annoying than a problem I use the grey depron for curved surfaces as I find it far easier to put compound curves into (dont forget the turtle deck is essentially a part of a cone) - you still have to take your time working the curve into it but its surprising the amount of curve than can be worked into it Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 11, 2016 Author Share Posted January 11, 2016 Posted by john stones 1 on 11/01/2016 12:56:12: Looks like a Ballerina Dave I can see 1 join on the rear deck, is other one piece ? Looks sturdy enough John Due to a outbreak of stupidity (which I blame entirely on the cats) when making the rear decking, I made the pieices to fit between F10 and F6 - when it should have ended at F5!!! So rather than strip all the work back I added another former at F5 and some bridging pieces between F5 and F6 - That of course meant the slope of the turtle deck was not per plan, so I made the turtle part stop at F6 and its flat between F6 and F5 - thats why its in two sections!!! Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted January 11, 2016 Share Posted January 11, 2016 I thought it was an awkward curve to do in one piece Dave, didn't know you had a Cat John Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 11, 2016 Author Share Posted January 11, 2016 SHMBO has three of the furry vandals, two mogs and a pedigree Ragdoll Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted January 11, 2016 Share Posted January 11, 2016 AVC First apologies to Dave for butting in on his build thread Normal white Depron is strong and stiff but relatively brittle. Grey Depron is more flexible (an effect of the colouring agent?). 'Aero' Depron is much softer and considerably more flexible. This shows the relative "'bendability" of a 6 x 6 mm Depron strip with about the same degree of 'working' before it is likely to split. Normal white at the top, Aero white at the bottom. Obviously the thinner Depron the more severe the bend can be. I hope this helps Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 11, 2016 Author Share Posted January 11, 2016 You never need to apologise for adding to my depron posts Simon, I value your input..... I fully agree with what you say, the grey is more rubbery and as you say probably due to the colouring agents used in it - the aero grade, I have used but only seen it in 6mm never 3mm - it does seem more bendable than normal white, but I have never tried to form it to the extremes you show in your pic! Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 12, 2016 Author Share Posted January 12, 2016 Fin, stab and elevators made up - rudder still to do Rather than fit the fin to the horizontal stab and infill for the fairing, I have made the fairing with a slot in the centre to receive the fin to ensure its square and makes it a lot easier to sand to the correct profile before its fitted Timber inserts are 6mm balsa for a bit of rigidity - elevators will be parted from the balsa when the joiner is inserted to maintain levels Quote Link to comment Share on other sites More sharing options...
Jon Laughton Posted January 12, 2016 Share Posted January 12, 2016 impressive rate of build Dave - as ever! T E StPilot Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 13, 2016 Author Share Posted January 13, 2016 One wing well under way........... I think I will join the two halves before skinning them this time...... Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 15, 2016 Author Share Posted January 15, 2016 Wings done, just tips and sheeting to do..... And ready for joining..... Quote Link to comment Share on other sites More sharing options...
Colin Leighfield Posted January 15, 2016 Share Posted January 15, 2016 Dave, you only kicked off on this one on 14 December! I don't know how you do it. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted January 15, 2016 Share Posted January 15, 2016 Taking shape nicely Dave, how much will the airframe cost then ? John Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 15, 2016 Author Share Posted January 15, 2016 Posted by Colin Leighfield on 15/01/2016 21:51:19: Dave, you only kicked off on this one on 14 December! I don't know how you do it. Rain, wind and a flying field that looks like Pashendale helps Colin....... Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 15, 2016 Author Share Posted January 15, 2016 Posted by john stones 1 on 15/01/2016 22:11:59: Taking shape nicely Dave, how much will the airframe cost then ? John I've used 2 sheets of 6mm and 1 sheet of Lite ply, some 3mm and 1.5,, Balsa but the time its done add on a couple of tubes of glue and another sheet of 3mm, some 3mm Birch ply, off cuts of Hardwood and some 8swg wire - so that about £20 for the materials - motor, esc and Lipo, wheels and odd n sods were in the shed anyway - but if you said another £50 for those bits, then all told £70 ish.....(very ish!) Edited By Dave Hopkin on 15/01/2016 22:18:15 Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted January 15, 2016 Share Posted January 15, 2016 Watching people build in Depron amazes me! One day I must have a go! Looks great Dave BEB Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted January 16, 2016 Author Share Posted January 16, 2016 SHMBO had a nice long lie in this morning - so while the cats asleep the mice will muck about with Depron... Wings skinned LE fitted, sanded down to the rough profile - Dowels fitted - Wire Bent, couldn't resist putting it all together ..... Quote Link to comment Share on other sites More sharing options...
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