R N
. We have drawn ours in by our own method, which is the correct one. While we here illustrate
S N R
at an angle of 12° it is in reality less than that amount; had we constructed
S N
at an angle of 12° from
R N
, then the draw would be 12° from
F B
, when the primitive circumference of the wheel is reached, but more than 12° when the fork is against the bank.