John Gibbins Posted June 13, 2012 Share Posted June 13, 2012 Forecast looks good for tomorrow so will hope to get some pics for you Quote Link to comment Share on other sites More sharing options...
Viking42 Posted June 14, 2012 Share Posted June 14, 2012 Hi Peter M, hi all! Finally all parameters did match and I was to take my RF-4D into the air. Unfortunately though,she couldn´t take off from our grass field, although well prepaired. Conclusion: wheel to small diameter. Question: Peter, what diameter do you recommend? I have to change/make a new landing gear leg, the commercial one I used, does take max 2 inches diameter wheels only. Look forward also to see the solution of a retractable gear! Regards Viking Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 14, 2012 Share Posted June 14, 2012 I reccomend the size shown on the plan but I do admit that it doesn't like taking off from anything less than perfect grass. You could try squeezing in a arger wheel However hand launching is quite possible if you have a helper. Once trimmed it can be hand launched solo if you know what you are doing. Quote Link to comment Share on other sites More sharing options...
Viking42 Posted June 16, 2012 Share Posted June 16, 2012 Peter M., Sopry for my late answer, but I´m currently sitting in the middle of nowhere/somewhere right now and thus have a small communication problem. To squeeze in a larger wheel doesn´t work, so I have loosened the current gear from the fuselage, and will bend a new one, taki ng a 2,5 - 3 inch wheel. In your opinion, will that do?. Pegards Viking Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 16, 2012 Share Posted June 16, 2012 Yyes it should do, make the new U/C with the wheel as far forward as possible. Quote Link to comment Share on other sites More sharing options...
Viking42 Posted June 16, 2012 Share Posted June 16, 2012 Peter M., Thanks - I'll do so Viking Quote Link to comment Share on other sites More sharing options...
John Gibbins Posted June 16, 2012 Share Posted June 16, 2012 Quote Link to comment Share on other sites More sharing options...
John Gibbins Posted June 16, 2012 Share Posted June 16, 2012 Top picture showing my electric conversion and the other two showing the retract. F1 moved forward to accomodate the short electric motor, aalso the retracted wheel. John Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 16, 2012 Share Posted June 16, 2012 Very neat. Must look good in flight Quote Link to comment Share on other sites More sharing options...
John Gibbins Posted June 18, 2012 Share Posted June 18, 2012 Most of my take off's have been from a hard surface but on the odd occasion that I fly off grass then I find that a small push to get the aircraft moving is all that is needed. The outriggers seem to be the issue so one day I will bend some skids into them to reduce the drag. Peter the retract looks very good when I do a low fly past and cycle the wheel up and down. As for the flying I cannot tell any difference with the wheel up or down. John Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 18, 2012 Share Posted June 18, 2012 The retract might improve the glide a little. The outriggers are made from those tubes in kiutchen cleaner sprays. Heating them a bit will allow them to be bent back and then they work well. Quote Link to comment Share on other sites More sharing options...
Viking42 Posted June 25, 2012 Share Posted June 25, 2012 Hi Peter M., New gear with larger wheel (2.5"on top picture. Old wheel plus gear surged out with quite an effort on lower pictures. Your wheel attachment design is quite sturdy... Now wee are waiting for the right occation and nice weather gods. Viking Edited By Viking on 25/06/2012 18:38:39 Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 25, 2012 Share Posted June 25, 2012 Looks good. We are all waiting for the weather!!!! Quote Link to comment Share on other sites More sharing options...
Bob Bertram Posted May 20, 2014 Share Posted May 20, 2014 Hi Folks, Hope this topic is still alive. Started a protracted build of PM's RF4 and I was just wondering what people bind the U/C leg to F2 with. I have tried a test piece with copper wire out of 2.5mm2 cable and this seemed to work ok. I think the wire measures 1.13mm. The ply broke before the wire. Cheers BB Quote Link to comment Share on other sites More sharing options...
Bob Bertram Posted May 20, 2014 Share Posted May 20, 2014 Oops, don't think it was from the 2.5mm wiring but the smaller lighting cable! Perhaps the wire should break first before the structure. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted May 20, 2014 Share Posted May 20, 2014 I use about 26 SWG tinned copper wire. six strands through each pair of holes and then soldered. Quote Link to comment Share on other sites More sharing options...
Bob Bertram Posted May 20, 2014 Share Posted May 20, 2014 Many thanks Peter for the prompt reply. BB Quote Link to comment Share on other sites More sharing options...
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