Originally posted by WheelsUpRacing:
[QB]If you replaced the 3/16 line with 6 inch line, would it effect the brakeing ? Hell yeah it would, you would be lucky to stop unless you had a master cyl the size of a BBC motor, because the Velocity of the fluid would be Very slow.
Velocity of the fluid would not be a problem if you went to a larger than needed line diameter. Therefore, if you went from 3/16 to 6 inch diameter line, it would have no effect whatsoever.
I see what youre saying about too small of a line diameter acting as an orifice, especially on something like a dump ram. But were not talking about such a drastic difference in diameter here, and not even close to the same volume of fluid. Generally rear drum brakes have 1/4" line to the rear axle, and then it splits to 3/16" diameter to each wheel cyl.
Pascals law states that pressure exerted on a confined liquid or fluid is transmitted undiminished and equally in all directions and acts with equal force in all directions. Therefore, Willy's is also correct in his statement.
You guys are talkin'bout two different things is all.
What I would do is, run 1/4" to the rear axle, and then 3/16" split off to each wheel cyl. I bet that's what the fittings will dictate as well.