is it permissible to move/bend your knees while serving? assuming both feet are firmly on the ground without any movement..
Speaking of moving while serving... Is it allowed that while in the act of serving I'll my change stance? Example... first stance its like serving a backhand stance then immediately change to forehand serve (and stance).
KillerQT, your racket movement wouldn't be in moving forward, would it? I can't imagine doing that without breaching this service fault
Depends on what you mean by "in the act of serving". If you have already moved your hand forward to hit the shuttle, you cannot stop halfway or change from a forehand serve to a backhand serve. The rule says the serve must be a continuous movement.
I mean before hitting the shuttlecock while in backhand stance then immeadiately shift to forehand stance then hit the shuttle (forehand serve).
Not necessarily true. It depends on the player and how he normally executes his serves. While in singles and serving high, there will likely be more movement of the limbs and the trunk to make the transfer, a flick serve must have that element of surprise to outwit your opponent. Therefore the serve should be as normal as possible with a last minute flick of the wrist that is not easily anticipated by your opponent. To be effective it is meant to deceive your opponent without giving him any clues. In most doubles play, the server seldom moves his body, knees or legs but usually just moves the forearm and/or wrist, depending on where and how far he wants to place his shot.
If you can do it without moving your feet and without serving over the waist, then I don't see why not.
If you have not started to hit the shuttle, it is okay to change your type of serve. For example, if you are still holding the shuttle and racket and before you start to serve, you change from a forehand serve to a backhand serve, there is no fault. But if you started to move to hit the shuttle with a forehand serve, then you stop and change to a backhand serve, it is a fault for the reason given earlier that the serve must be continuous.
You should look up the Badminton Laws and point the relevant section to your friend. Better still, always keep a copy of the Laws in your badminton bag so that you can refer to it when in doubt.
if he starts with a backhand serve stance (with racquet held in front) but then drops the stance (before moving the racquet forward) and moves to a forehand stance and then serves, I think the two motions are not connected and should be ok. but if he starts with a backhand serve stance with racquet held up, pushes the racquet forward to hit the bird but in the middle of the motion switches to a forehand serve, in no way can that be a single continuous motion and so it's a fault.
To the topic starter: It is the same as tip-toeing before a serve, perfectly legal. To Killer: He can do it as long as he has not "set" to short serve and then perform a long serve.