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F5B

A forum to discuss F5B Model Aircraft

7 topics in this forum

  1. What is F5B?

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  2. F5B videos

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  3. Anyone heading to the annual awards?

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  4. Potential F5B World Champs - 2020

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  5. Winter F5B Practice

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  6. F5B 2019 Season

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    • 67 views
  7. F5B UK League Round 1 Report

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    • Big Si
      I got a knife between the carbon skin and rohacell to separate the 2 about 30mm all round both sides of the wing then I got a sanding bar and slid it in under the carbon and sanded the rohacell about .03 of a mm all round both sides and then cut some strips of carbon tissue 60mm wide and slid them into the main wing half way and did3 layers all different ways then just supper glued it holding the carbon skin tight to the core so it bonded all 3 together and let it then dry  ( cup of tea time ) then made a carbon spar to run down the back of the main spar about 70mm long by the depth of the wing and mafde it sharp each end and slid it in both ways down the back of the main spar then glued it to one side then cut the tissue sticking out till it would allow the 2 halfs of the wings to but up nice all round then I just supper glued it all and let set.then when dry I just got some wet and dry and sanded it smooth came out really good and I was well pleased so like I said yesterday me and simon had a couple of hours before the rain and we could not brake it so seems good and looks fairly tidy,if I wanted to be bothered a di of filler and a sand and some fresh paint you would be hard pressed to see the mend sods law the underside looks very good and neat so when flying you really cant see it at all and if flew same as before and did not seem to ned a c of g change so well pleased with it all 🙂
    • PaulR
      (The weight shown on that front scale is with ballast) I had to extend the rear leg since my scales are not the same height. If it’s not level then measurements will not be correct. 
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