Reefing

Gregor
Please accept my apologies i meant to type sailkoop
I have edited the post
I must add - to each his own-If it works for you then OK

It is just that the figures suggest that there is no mechanical advantage so I cannot understand how it improves the system
That is what I was trying to find out

Please accept that there was no wish to cause offence

Edited by samuel - 22 November 2012 at 13:44

Gregor

@ Gregor: BTW

Preparing for your appointment are already running in the background

sailkoop wrote: Hi Samuel, when the the block on the Mast is on the boom, then the point is "fixed" and you have devide the Load from 100kg by 50% (remenber the moving block which is also working now on that line!). thats the Reason for the 50 + 50Kg in my example! And sorry I am correct. If you build up that drawing one to one in your workshop you will see that it works. regards

No the line coming off the clew has 100 kg load (just like the line coming off luff) the line from the car to the back of the boom is also 100 kg
This gives a total figure of 200 kg which has to be 200 kg to counteract the force of the luff side of the car
You cannot have 100 one side & 200 the other
Look at Peter Blakes drawing which is correct & demonstrates the situation very well
It is a simple law of physics every force has an equal & opposite force
. ---with the greatest of respect ---i still say you are wrong


Edited by samuel - 22 November 2012 at 18:39