Nik Harrison Posted May 21, 2024 Share Posted May 21, 2024 Ron, Thank you for pointing that post out. I still find it an unusual way to drive the flaps, but if it works then I stand corrected. What I find more difficult is that reversing the motor feed on a servo makes it operate in the reverse direction. I would have thought that the sensor potentiometer would have been confused. Still some thing else I've learned. Always worth following these posts for little gems like that. Thanks. Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted May 21, 2024 Share Posted May 21, 2024 Nic, the idea is to have the flaps working as the full size which is what it does, ie no gap when the flaps are lowered rather than dropping down off the back of the wing. Quote Link to comment Share on other sites More sharing options...
Ace Posted May 21, 2024 Share Posted May 21, 2024 Sorry to deviate re servo reversing - would you achieve the same outcome swopping two pins over in the servo plug being easier and reversible? Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted May 21, 2024 Share Posted May 21, 2024 No because that would blow the circuit board, its only the motor polarity that needs to be reversed 1 Quote Link to comment Share on other sites More sharing options...
Nik Harrison Posted May 21, 2024 Share Posted May 21, 2024 Eric, Reference the flap movement. I now understand that the servos initiate a rotation of the flaps. I had initially thought the movement was push/pull. I'm still trying to understand where the hinges fit in. I've made flaps that operate as you describe for my Brian Taylor Me110 but had to have external hinges to allow correct movement. So how did you solve the problem? Cheers. Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted May 21, 2024 Share Posted May 21, 2024 Hi Nic, I you look on page 2 of the thread the arm is forward of the hinge line, the hinges are 3mm up from the bottom of the flap and the front of the flap is curved so when it is lowered there is no gap between the flap and the wing. Quote Link to comment Share on other sites More sharing options...
Geoff Gardiner Posted May 21, 2024 Author Share Posted May 21, 2024 Hinges go here: Quote Link to comment Share on other sites More sharing options...
Geoff Gardiner Posted May 21, 2024 Author Share Posted May 21, 2024 OK, a bit more done today. I have added a part former for the canopy to glue to (for a flush joint) and trimmed the cockpit sides as they were semi blocking the canopy windows. I also fired up Fusion360 and designed and printed some exhausts. More later... 1 Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted May 21, 2024 Share Posted May 21, 2024 Nice exhausts Geoff, it's all looking good. Quote Link to comment Share on other sites More sharing options...
Nik Harrison Posted May 22, 2024 Share Posted May 22, 2024 Thanks for the explanation of the flap system. Much appreciated. Cheers. Quote Link to comment Share on other sites More sharing options...
Geoff Gardiner Posted May 23, 2024 Author Share Posted May 23, 2024 (edited) Sorted out the radiator fixing today. I first glued on some balsa disks that locate in the wing bolt holes. Then used a small diamond hole cutter to fit some magnets. More later... Edited May 23, 2024 by Geoff Gardiner 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted May 23, 2024 Share Posted May 23, 2024 Nice work Geof Quote Link to comment Share on other sites More sharing options...
Ace Posted May 24, 2024 Share Posted May 24, 2024 Geoff that is a very neat solution 👍 Quote Link to comment Share on other sites More sharing options...
Geoff Gardiner Posted May 24, 2024 Author Share Posted May 24, 2024 Thanks chaps. I made a start on covering the fuselage today. More later... 1 Quote Link to comment Share on other sites More sharing options...
Geoff Gardiner Posted June 1, 2024 Author Share Posted June 1, 2024 I have finished covering the fuselage and have fitted all the tail pieces. The next step will be painting. I am going to try to replicate this scheme: More later... 5 Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted June 1, 2024 Share Posted June 1, 2024 Fabulous work so far Geoff . Plus , I really like what you are aiming for . To me , the Modified P51Bs were the real hero's . By the time the D version came in , the Luftwaffe was on the ropes . If you have read Len Deighton's excellent novel " Goodbye Mickey Mouse" , you cant help having a huge appreciation of the P51s that helped turn the tide . The original front cover had a similar P51B malcolm hood on it . I made it twenty years ago and it was fairly basic . Flew really well though as very light . Took me a while to find the dolly bird on the side , as per the book cover . An art teacher friend found her . She was actually standing upright on a 70s album cover ! 3 Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted June 1, 2024 Share Posted June 1, 2024 ...and if you haven't read Len Deighton's Goodbye Mickey Mouse , then it would be a grand time to do so. 😎 Your Mustang is looking superb Geoff and. like Richard, I've always preferred the P-51B and the equivalent "razorback" RAF Mustangs. 1 Quote Link to comment Share on other sites More sharing options...
Paul Johnson 4 Posted June 1, 2024 Share Posted June 1, 2024 Geoff, You need to LEGO of that tail fin before you can fly... 2 Quote Link to comment Share on other sites More sharing options...
Geoff Gardiner Posted June 11, 2024 Author Share Posted June 11, 2024 Made a start on the painting. First step was white emulsion, brushed on. Then mask off for the stripes, and the white background for the 'stars & bars'. I cut my own paint masks and these were applied onto the white background then the stripes were masked over the top (see below). The letters are just to check alignment for now. With paint masks I always seal the edges with the background colour first. This stops any bleeding through of the top colour. Seems to have worked fairly well. More later... 4 Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted June 12, 2024 Share Posted June 12, 2024 I see what you've done there GEOF Very clever that , Which USAAF fighter group would that have been and where were they based ?😉 DEBBIEdon perhaps ? Andrews field ? 1 Quote Link to comment Share on other sites More sharing options...
gillyg1 Posted June 13, 2024 Share Posted June 13, 2024 Ok guys, just starting my p51 build. First stumbling block for me.🤔 Wing spars= 2x pairs, upper and lower ✅️ So looking length ways :- 1 x has flat edge 1x has slightly curved edge which is top and which is bottom? IE does the wing have a flat bottom across the span or flat across the top.? sorry to ask this on your build Geoff but don't know where else to post . I think it will be a flat bottom but just need to confirm. Quote Link to comment Share on other sites More sharing options...
Paul Johnson 4 Posted June 13, 2024 Share Posted June 13, 2024 Zoom in i have written on it 1 Quote Link to comment Share on other sites More sharing options...
Geoff Gardiner Posted June 13, 2024 Author Share Posted June 13, 2024 No problem with anyone posting on this thread. If you keep in mind that the wing has a positive dihedral and then offer the pairs up to each other at the root, it should hopefully make sense. 1 Quote Link to comment Share on other sites More sharing options...
Geoff Gardiner Posted July 9, 2024 Author Share Posted July 9, 2024 I've been a bit busy the past few weeks but have been doing some more painting between wind, rain and hail storms (thought it was Summer!). More later... 4 Quote Link to comment Share on other sites More sharing options...
Geoff Gardiner Posted July 12, 2024 Author Share Posted July 12, 2024 Bit more painting done today. More later... 8 Quote Link to comment Share on other sites More sharing options...
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