Tuesday, 1 September 2026

The Cyvern is ready!

 

  Each model deign is a combination of many things- This was literal this weekend as I finally got the fly the ‘Cyvern wings with the new fuselage.  It a combination that have ‘clicked’ from the off.

  The Cyvern wing is a development to improve lift distribution across it’s span and aerodynamic performance.  The 2.75m wing tapers from 8.2 to 7.4%, it’s aerofoils have proven to perform well in the high angles of attack that characterise slope racing.  With in the wing is the kind of substantial spar and joiner to give me huge confidence to throw the model around any slope.

  The new fuselage that I have combined with the wing has several developments, some more obvious than others.  The fuselage is the first one I have produced with a nose cone.  Other developments are more subtle and improve both turning performance and straight line speed.



  Flyng the test model back to back with the same wings on previous fuselages, there is a noticeable performance shift.  Performance improvements are always hard to quantify but testing the new wing through 2026 it has flown 12-14% heavier than it’s previous iterations.

  The test model has finalised the servo tray CAD file so the model is now ready for orders, with the model price working out at £750 for the carbon version.