Trailers project

Hi guys what you need to do is find out about trailers. Below are the areas that need to be covered,
Trailer Types-
Single axle.
Tandem axle.
Trailer Designs-“A” Frame.The “Draw bar”
For different boat hull shapes.
The variation in boat hulls has dictated different trailer designs.
Bunk type trailer:
Roller type trailer:
Trailer Materials
Boat trailers are generally made of galvanised steel or aluminium material
Overall Dimensions The L.T.N.Z (Land Transport NZ 2006) sets out maximum permitted dimensions for trailers .
Weights and Capacities
Suspension Types
Wheels and Tyres
Hubs and Stubs
Brakes
Couplings
Winches
Lights