EarlyBird Posted January 26 Author Share Posted January 26 The treatment starts with a sharp knife for a bit of whitling. A few big bits. Then I used my plane to get a rough size, making sure not to go too far. A bit more plane, I think. That's close enough with 1/16" at the bottom and just not touching the top leaving it at 5/16" Next, I held it in place on the TE for a close shave with the plane. That will do nicely. After a bit of sanding. It's ready for the TE to be cut off (98 mm) and glued. Leaving the remainder for the aileron. That's next then fit the hinges and finish the wing tips. Steve Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted January 27 Author Share Posted January 27 I thought the aileron was finished but on moving a clamp from the en to the centre. Just more plane and sanding led to this. That's better. Steve Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted February 1 Author Share Posted February 1 One wing, at last. 👍 I can now put this build on hold while my mate John catches up. Onto Peggy Sue II for a while. Steve 1 Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 1 Author Share Posted September 1 Summer turned up and put my builds on hold because I don't fly and build on the same day. At the field on Friday the subject of builds came up and I decided to clear my unfinished builds, and the first will be this one. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted September 1 Share Posted September 1 Good to have you back on the forum EB 1 Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted September 1 Share Posted September 1 Good to have you back and how far have you got with the build? 1 Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted October 13 Author Share Posted October 13 Thanks Ron and Chris, the covering is done. I'm having some problems with pictures.😭 Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted October 13 Share Posted October 13 I wonder if I will ever see any of these completed!! I am coming up to 87 so probably not. Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted October 13 Author Share Posted October 13 Just takes time for me to get there. Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted October 13 Share Posted October 13 My late wife's Ohman is sitting in the spare room, but I'll get it out for a flight and post the picture at the field 🙂 The main problem if you could call it that is the Grumpy Tiger Cub is my go to fly in almost any conditions super fun model and it goes in the car without taking the wing off. 1 Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted October 13 Author Share Posted October 13 29 minutes ago, Peter Miller said: I wonder if I will ever see any of these completed!! I am coming up to 87 so probably not. I will do my best Peter but at 72 I am slowing up and quality is reduced. I keep my interest going by making changes to the design.🥴 Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted October 13 Share Posted October 13 I have just come to a standstill. I have a plan on the computer but someone else will build it. I no longer go flying. I can see the flying field from my bedroom with a spotter scope and that is as near as I get. I do more photography now,just local...Very Local or tabletop. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted October 13 Share Posted October 13 1 hour ago, Chris Walby said: My late wife's Ohman is sitting in the spare room, but I'll get it out for a flight and post the picture at the field 🙂 The main problem if you could call it that is the Grumpy Tiger Cub is my go to fly in almost any conditions super fun model and it goes in the car without taking the wing off. VERY NICE!!!! Ah Yes!!! we have an unflown one in the club...waiting to hear how the builder likes it but his is electric. Not the same!!! Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted October 13 Share Posted October 13 Sorry to hear you’re not going flying at the moment Peter - perhaps a nice summer will get you out and about next year? Re. the electrifying of your models, I think (hope) you approved of my reverse direction (EP to IC) reduced scale 40” span Ohmen which has a lovely little OS20 four stroke in it. I've also been lucky enough to fly several standard builds - all a delight, as well as a 1.5 times version (Grohmen?)…and a twin (Twohmen!) 1.5x version shown with my 85% IC “Glohmen” 1 Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted October 13 Share Posted October 13 Hi Martin I never mind what people do to my designs, it is also designing and people can improve on them in that way. What matters is that people have fun and enjoy what they do. I am designing an interesting model at the moment just to keep my mind working. It is the MW 9 Plank. Look it up on You Tube. If I don't make it I have a very experienced builder who says He will "one day". Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted October 13 Share Posted October 13 8 minutes ago, Peter Miller said: Hi Martin I never mind what people do to my designs, it is also designing and people can improve on them in that way. What matters is that people have fun and enjoy what they do. I am designing an interesting model at the moment just to keep my mind working. It is the MW 9 Plank. Look it up on You Tube. If I don't make it I have a very experienced builder who says He will "one day". Well it flies very well, although I think the rudder/drag flaps are very interesting ! Would be great to see a build log of something so unusual. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted October 13 Share Posted October 13 I agree about the drag flaps. I wonder why they are needed when there are elevons. They might be a step too far. We shall see. I do favour the KISS principle. Keep it simple stupid!!! Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted October 13 Share Posted October 13 (edited) 56 minutes ago, Peter Miller said: I agree about the drag flaps. I wonder why they are needed when there are elevons. They might be a step too far. We shall see. I do favour the KISS principle. Keep it simple stupid!!! Might not be needed on a model, but full size perhaps it feels better and has its use to yaw the aircraft with say cross wind landings. The alterative would be to use the elevons to roll, but that then drops s wing..not what you want when touching down! We would just land into wind. I have found a few deltas with wing tips yaw backwards and forwards in cross wind where as the plank with a centre fin tends not to. The other interesting bit is the location of the wingtips as they look almost behind the wing. Perhaps that reduces the yawing? Edited October 13 by Chris Walby Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted October 17 Share Posted October 17 Peter, As mentioned earlier I hunted the model out from the spare room and took it down to the flying field today for a couple of flights. As expected it flew faultlessly despite not knowing where the battery should be located so just went with C of G on the spar. GTC for tomorrow 🙂 1 Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted October 17 Share Posted October 17 Great! Glad that you are happy. CG on the spar is right! Quote Link to comment Share on other sites More sharing options...
Piers Bowlan Posted October 18 Share Posted October 18 On 13/10/2024 at 19:55, Chris Walby said: Might not be needed on a model, but full size perhaps it feels better and has its use to yaw the aircraft with say cross wind landings. The alterative would be to use the elevons to roll, but that then drops s wing..not what you want when touching down! We would just land into wind. I have found a few deltas with wing tips yaw backwards and forwards in cross wind where as the plank with a centre fin tends not to. The other interesting bit is the location of the wingtips as they look almost behind the wing. Perhaps that reduces the yawing? I agree Chris, landing in a crosswind requires yawing the aircraft to align it with the runway during the flair, if flying an offset type approach. If flying a wing-down type approach (sideslip) yaw is also needed (crossed controls- aileron and rudder). Rudder is not really necessary on a small model for cross-wind landings, just land into wind, as you say.😊 On the MW-9 the drag rudders provide the yaw as a centrally mounted rudder would not be so effective with such a short longitudinal axis, as you alluded to. I emailed Mike Whittaker a couple of years ago and he kindly sent me some nice three view imaged from which I drew up some basic plans with the intention of my building a model MW-9, ‘when I got time’. Sadly not yet! I hope you find the ‘mojo’ Peter to build your design and get it published in the Mag. I am sure it would be very well received and designed by you, no doubt fly very well too. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted October 18 Share Posted October 18 5 hours ago, Piers Bowlan said: I agree Chris, landing in a crosswind requires yawing the aircraft to align it with the runway during the flair, if flying an offset type approach. If flying a wing-down type approach (sideslip) yaw is also needed (crossed controls- aileron and rudder). Rudder is not really necessary on a small model for cross-wind landings, just land into wind, as you say.😊 On the MW-9 the drag rudders provide the yaw as a centrally mounted rudder would not be so effective with such a short longitudinal axis, as you alluded to. I emailed Mike Whittaker a couple of years ago and he kindly sent me some nice three view imaged from which I drew up some basic plans with the intention of my building a model MW-9, ‘when I got time’. Sadly not yet! I hope you find the ‘mojo’ Peter to build your design and get it published in the Mag. I am sure it would be very well received and designed by you, no doubt fly very well too. We shall have to see. At the moment just doing the Compufoil wing is enough. Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted October 18 Author Share Posted October 18 Nearly there Peter, old and new together for the first time 1 Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted October 18 Share Posted October 18 Very Smart they are too! Quote Link to comment Share on other sites More sharing options...
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