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Birgir

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  1. Hi everyone. It’s now almost a year since my last post here, where I talked about my hopes that the Bleriot would be airborne again this season. I’m sorry to say that I used all the limited time of good weather here in Iceland to try to master the flying of my biplane, Sig Hog Bipe, with limited results. On windy days I however managed to make some more videos looking closer at some aspects of my Bleriot XI model. Here below is a video where I take a closer look at the stabilizer. You can also go to my YouTube channel and have a look at all my Bleriot videos at the Bleriot playlist. At present I ‘m collecting as many subscribers as I can and will be thankful if you could use this opportunity to subscribe to my YouTube channel. Thanks, Birgir.
  2. Hi there. Now I‘ve managed to test my new setup with a thicker window pane and an exhaust extension. The autumn is coming here in Iceland and the cold northerly winds are blowing. 6 – 7 m/s from north i.e. off shore wind is perhaps not the best situation for a test. Our airfield is very close to the shore as you can see on the video above and it is the North Atlantic Ocean. Well, the take-off was very steep but soon I got control of the model and started playing in the wind trying to get our windsock on camera. After a few minutes the engine started to sound a little strange and I wondered if that was because my new fuel had a little more oil than what I used to use. Suddenly all went quiet – dead engine. My Sig Hog Bipe is not a floater. Luckily the model was in the northern part of my flying envelop but there was quite some distance to the landing strip. I tried to gain speed by pointing the nose a bit down and turning into the wind, but the wind was to much – when turning, the inner wing lost the lift, and I couldn’t do anything but listen to the all too familiar sound of balsa breaking on a nearby football pitch. The theory is that the exhaust extension caused the motor to overheat and stop. As can be seen on the still below the extension did not solve the oil problem anyway and on top of that my camera was not on video but time laps stills. The only success was that I did not loose the camera to the Atlantic Ocean and the model can most likely be fixed. B.
  3. To solve the Castor oil problem for my pilot I ‘ve added an exhaust pipe extension made from an electrical conduit. I have bench tested it and it seems not to have too much effect on the running of the engine. I have not yet done an inflight testing but will do so at the first opportunity. I wonder if anyone here has the knowledge to calculate the resistance of the extension and do an educated guess about the outcome. The measurements are: The cross-section of the end of the muffler output is 50 square mm. The cross-section of the extension pipe is 133 square mm, i.e., 2.64 times the muffler. The length of the extension is 320 mm. B.
  4. This is my first video from a GoPro 7 on board Sig Hog Bipe. Obviously I must do something about the exhaust 🙂 B.
  5. Hello again dear friends It is now seven years since I built the Bleriot XI model and time to inspect the landing gear. So, I cleaned it up and put in new rubber bands. Hopefully she will get airborne again in the new year. Best wishes, Birgir
  6. Next month it will be 50 years since my dad gave me a Keil Kraft Mini Super kit for a birthday present. To celebrate that I took it down from the garage ceiling, gave it new rubber bands and took it to the field. Originally the model was said to need two or three channels: engine, rudder and maybe also an elevator. Me and my dad built it for three channels. Later I added ailerons, steerable nose wheel and enlarged the rudder a bit and after that it became a very nice, easy to fly little model.
  7. Hi My oldest model was built in 1973 by me and my father. It’s a Keil Kraft Mini Super kit. It has of course had a few updates and rebuilds but I have already flown it three times this spring More info about that model can be seen on http://flugmodel.weebly.com Birgir
  8. Hi everyone I came across this old thread when practicing in the new forum so I decided to post my first post in the new forum here. The Somethin‘ Extra is now fully built and equipped with a 52 engine and a 11x6 prop. Hopefully I will have the courage to maiden it this summer. B.
  9. Hi I ‘ve just finished building my Sig Somethin‘ Extra kit. Next step will be running in the motor (SC 52) and adjusting the control throws. The recommended throws in the manual seem a little bit extreme to me, even the low throws. I ‘m about an average flyer, I think and I would welcome any good advice on this matter before the maiden flight. Thanks
  10. Birgir

  11. Birgir

  12. Hi Nigel What a splendid looking example of a Keil Kraft Mini Super. I particularly like this model because I’m still flying mine and some of it is over 47 years old. This video was taken 13th of June on a windy day. **LINK**   Edited By Birgir on 26/06/2020 11:59:29
  13. Hi everyone In a very easy and slow manner I‘ve started my next build. It is a Sig Somethin Extra kit I bought a few years ago. When living on an island in the middle of the Atlantic Ocean it takes some time to gather everything you need. So when I bought the kit I also bought the servos, engine, wheels and most other things I remembered. Now when the build is well under way I remember that I havn’t bought a suitable propeller. In the instruction manual the recommended engine is a 40 – 46 (even 50) two stroke but I decided to be on the save side and bought an ASP52A engine. Also, in the instruction manual, it is recommended to avoid heavily pitched props. The recommended prop for the engine is in the range from 11*7 to 12*5 So now to the question at hand: Would a 12*4 be a suitable choice in this model/engine setup? Thanks in advance Birgir
  14. And then a grizzly bear came out of nowhere and graped the rudder...
  15. Hi David I’m sorry for your not so soft landing, but bear in mind that Luis also had a tough landing in England on the 25th of July 1909 and also broke his landing gear. By the way, I also learned the hard way that the Bleriot is no glider, so just look at this as an opportunity to redesign the engine room. My Bleriot has been hanging from the sealing of my garage since last year so it is still in a pretty good condition. To answer your question, my Bleriot has 425 gr of lead up front so I think that it would be good to put in a larger engine and use some of that weight to create power. My SC30FS needs full power almost all the time to cope with the heavy model. Usually when you come home with a broken model it looks a bit better after some inspection and rebuild planning, hope that this is also the case this time. Please post some pictures of the rebuilding procedure. Good luck, Birgir
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