Rail spacing?

[DeanGrigson]

Hey everyone what are the rail spacing for engines from .10 to .40? The average would be fine ,I want to try my hand at boat design for my own enjoyment ...any help would be great.thanks Dean

 

[brad nichols]

Standard mounts are 3, 4 and 5 inch in monos and riggers would be that or anything in-between depending on your tub inside width.

Brad

 

[DeanGrigson]

Thank Brad ,that helps a bunch...