Peter Miller Posted January 2, 2019 Author Share Posted January 2, 2019 Hi Geoff. So glad that you are happy with the Ohmen. I love it too. Last Friday I took it up to a dot in the sky and could see it clearly and exactly what it was doing. None of the other club member could see more than a dot and didn't know what it was doing. Yes, The OHmen is a bit light for much wind although I have flown it in over 10 mph wind. Quote Link to comment Share on other sites More sharing options...
Dad_flyer Posted January 20, 2019 Share Posted January 20, 2019 Saw a newly completed one down at the patch today. The builder was very happy with it, it looks beautiful and it flew well - his first electric model. It was already on my list for 'when I am further on with learning to fly'. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 20, 2019 Share Posted January 20, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 20, 2019 Share Posted January 20, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted January 20, 2019 Author Share Posted January 20, 2019 I look in Charity shops occasionally. I once picked up a mint Voigtlander Bessa1 camera for a tenner....sold it for over £60 on Ebay so I can believe it. I keep meaning to do more of that. If you watch Flog It and Antiques Roadshow they are always coming up with massive bargains found in Charity shops and Car boot sales Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted January 20, 2019 Share Posted January 20, 2019 Any idea what really sells Percy? Sounds interesting. My local High St. has charity shops and charity shops and very little else anymore. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 20, 2019 Share Posted January 20, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Former Member Posted February 14, 2019 Share Posted February 14, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted February 14, 2019 Author Share Posted February 14, 2019 I don't know. Just a comment. I would make the tail out of 3/16" sheet, not built up. Quote Link to comment Share on other sites More sharing options...
Piers Bowlan Posted February 15, 2019 Share Posted February 15, 2019 Posted by Percy Verance on 14/02/2019 20:55:15: I just ordered a set of Ohmen lazer cut parts from Sarik today. How long am I likely to wait for UK delivery, anyone? I might go for the Vertigo parts in a month or two. I last flew a Vertigo in about 1974.........but next time round it'll be electric. Edited By Percy Verance on 14/02/2019 21:02:08 Percy, I have not received the ASK-11 CNC parts set I ordered on the 20th January from Sarik. The rate I build it is really not an issue, plenty of other stuff to keep me busy. I suggest you give them a ring and ask them yourself how long you Ohmen will be. Just tell them your building board is empty and you are having withdrawal symptoms as you are not getting your building 'fix'! I think they have a bit of a backlog at present after their sale but I usually find them pretty helpful so maybe they will pull their finger out for you. Quote Link to comment Share on other sites More sharing options...
Former Member Posted February 15, 2019 Share Posted February 15, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Piers Bowlan Posted February 15, 2019 Share Posted February 15, 2019 Percy, Just an update, I received an email from Sarik this afternoon saying that they had dispatched my CNC parts order, so I guess it should arrive on Monday. Hopefully they have now caught up and you shouldn't have to wait so long. They usually take about ten days. Quote Link to comment Share on other sites More sharing options...
Former Member Posted February 15, 2019 Share Posted February 15, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted February 15, 2019 Share Posted February 15, 2019 Why would anyone want cnc parts for such a simple model? Mine took no time at all with just the plan to go by. Quote Link to comment Share on other sites More sharing options...
Former Member Posted February 15, 2019 Share Posted February 15, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Trevor Crook Posted February 15, 2019 Share Posted February 15, 2019 Yes, the ribs are easy but the formers are more fiddly - I cheated and got my father-in-law to cut them out with his electric fretsaw! Would certainly consider the Sarik parts if I were building another, but I'm a lazy so-and-so. Interesting comment on the sheet tail Peter. I built mine as per plan, but another alternative is to use a 1/16 sheet core, then 1/16 ribs and outline either side of it. Probably negligable weight saving over solid sheet, but stronger than the skeletal version while maintaining the built-up appearance, if that matters. Edited By Trevor Crook on 15/02/2019 23:11:17 Quote Link to comment Share on other sites More sharing options...
Nigel R Posted February 16, 2019 Share Posted February 16, 2019 Trevor Pete is talking about vertigo I believe. Quote Link to comment Share on other sites More sharing options...
Trevor Crook Posted February 16, 2019 Share Posted February 16, 2019 Ah, lack of attention to detail on my part! Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted February 16, 2019 Author Share Posted February 16, 2019 NO I was talking about the Ohem. I designed for saving weight at the rear and then had to add lead. Later I cracked one side of the tailplane and had to add a strut to support it. A sheet tailplane is now a standard reccomended modification. Quote Link to comment Share on other sites More sharing options...
Former Member Posted February 16, 2019 Share Posted February 16, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Steven S Posted February 16, 2019 Share Posted February 16, 2019 Thanks for explaining your reasoning Peter, now I understand. Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted April 15, 2019 Share Posted April 15, 2019 I have decided to try a mod. on the fin/rudder because application of rudder pushes the tail up, not down. This prevents mine from performing an upright spin (it will do inverted ones), also I have found it very noticeable on take off if using a lot of rudder, when the nose gets pushed down. What I have done is to angle the top of the fin rearwards by 3/4" to give it some rake back and make a new rudder, keeping the area of it the same. This worked on single channel models in years of yore so that they could be `buttoned up` by waggling the rudder just after launch. Just finished the mod. so will let you know soon if it works. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted April 16, 2019 Author Share Posted April 16, 2019 That is interesting. I had not noticed that. However I remember a discussion with Alistair Sutherland (I hope I got that right, it was a long time ago) WE where discussing Knife edge flight and he said that when the elevator extends over the area of the rudder the model tended to pitch nose down in knife edge. Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted April 16, 2019 Share Posted April 16, 2019 I don`t think it is much to do with the elevators extending over the rudder since all of my aerobatic models and many others capable of aerobatics are built like that. The fin rake angle, if any, is however critical. Many other factors are at work here as well, just to make life more difficult. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted April 16, 2019 Author Share Posted April 16, 2019 I must see how mine spins. I have spun it but can't remember any problems. Quote Link to comment Share on other sites More sharing options...
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