4.7m (15ft) Boat Trailer

Chassis Frame

profile-chassis.png

Firstly, cut the 4 cross member sections and weld together.

cross-member-2.png

Drilling the galvanising drain holes can be done now, but best left until the chassis is fully welded.

cross-member-1.png

The chassis runner can be fabricated by either cutting 2 sections and welding together as per the plan below, or by notching out a vee section and bending the chassis runner to close up the notch gap and welding.

boat-trailer-chassis-compon.png

Notching is the preferred method, but accuracy and tidy cutting of the notch is required.

Closing up the notch gap should only be done once, opening and closing of the gap will cause rapid metal fatigue where the steel is bent.

chassis-notch1-1.png

Tack weld the chassis runners or the bent notched sections and lay on a flat surface with enough room to fit the cross members between.

chassis-frame-1.png

Square the chassis frame by measuring diagonally across the frame at identical points. Adjust the frame until both measurements are identical. Sandbag or clamp the frame securely and put some good tack welds into the frame.

4.7m Boat Trailer Plan

$5.00

 

You can now purchase the full Boat Trailer Plan and Construction Guide for only $5.00

Includes

  • Full 23 Page Trailer Plans
  • 28 Page Boat Trailer Construction Guide
  • Material and Component Costing/Budget Sheet

All files PDF format