I cannot tell you what swing speed you have, as there are a lot of factors which determine a swing speed. What I would say to you, is go to your local Golf shop or pro that has a launch monitor and get custom fit, it is free and very effective.
But, if you cannot do this, I would say your swing speed is between 85-90 mph and should therefore get regular shafts. Steel is also ideal for you. It depends why you think you need stiff? You are still young, and the only tell tale sign you should get stiff is if you are hitting the ball left (this is an indication you are swinging faster than the shaft allows the club head to square). On the other hand, if you got stiff and were hitting it right it would be an indication the shafts are too stiff.
That would be the ideal swing speed for regular shafts.
All Ecotecs have counter balance shafts that spin at twice the crankshaft speed.
The F shaft is popular with Cobra drivers. It is part of a set of 3 shafts, the X, F and M. The X (extreme ball speed), F (fast ball speed) and M (medium ball speed) shafts are designed to tailor your club to your swing, based on your ball speed and swing speed. The F shaft in particular is the middle ground of these three shafts.
If by plains you mean airplanes, in order for them to lift, they have to go fast enough. Lift is a function of speed. Without enough speed, there's not enough lift. When the plane reaches enough speed, the lift begins.
A33 agricultcure test
an air velocity meter to measure the speed of ventilating air in mine shafts
an air velocity meter to measure the speed of ventilating air in mine shafts
Soft regular shafts are slightly lighter, and for people with a slower swing speed than those who use regular shafts.
Young children should really use graphite shafts, they help them get the ball in the air easier and they are a lot lighter than the steel ones. Any clubs I have seen designed specifically for children have graphite shafts. When they get a bit older and stronger say 13-14 they may be able to move on to steel, because their swing speed will have increased and they are a lot stronger. Girls however tend to stay with graphite as they have slower swing speeds and the graphite shafts help get the ball in the air.
It will if the hill is steep enough
An oldham's coupling is used for connecting two parallel shafts where have asmall distance & have the same speed
yes, u need to disconnect drive shafts to enable you to remove trans mission to get at cluth and pressure plate