[tim chapman]

trying to fix an image in my mind here.....when we talk vertical, horizontal & angled hinging are we talking in relation to the ground ? so a vertical hinge sees the blade (the left arm) swinging around a pin that is mounted horizontally like the top of a cat flap in a door ?

this thinking stuff hurts don't it ?


ps Air if my lines of thought are messing with yours, please say & i will set up another thread - i originally thought otherwise but i can now see how they might be a negative to your understanding rather than a positive