digga

 yes thanks again  for everyones  help

thanks  everyone for  the help

 thank  you  for  taking  the time to reply  its  coming a bit clearer  now as i said  here to  learn  and theres such a lot of valuable knowledge  here  wanted  to  ask a few  questions  even  though some may seem stupid and get  it right.  before  messing up   and still  might  see if i can  do something on excel  to  calculate  offset  for those  gates  where  the   verticle  positions of pivot   is  allready  fixed  on  pre supplied  gates

hi  i was after  some help.  i have to  put up a lot of gates ( both metal & wooden ) and sometimes come up against the age old problem of gates having to rise up a slope as they open but be close to the ground when shut   i know how to achieve this by offseting the bottome hinge.

 \what im after the help with is how to calculate the offset was thinking of maybe doing something on excel to calculate for different width gates and amount of rise needed i done  a bit of a search before posting and come across the self rising gate hinge thread  .

 where i see a reply from john b  said

Distance to offset centres of the hinge pins can be calculated by measuring the vertical distance between the hinge points and multiplying this size by the rise required, the result being divided by the length of the gate

so wanting to check i have this right before messing up anything expensive    i measure the verticle distance between the pins

( must confess been hanging gates for a while and didnt think this measument would make much difference but  here  to learn )

 then  mutiply that by the rise needed and divide that by lengh of  gate  is this including  the eyes  on the gate  so  you  measure it from  the centre  so you have  the mark for your pin location  on the post ?

many thanks

david