Maybe a chunk of 4x4 and some big timber screws?
Oh yeah, glue+screw a 3x2 there was option 3. I was leaning towards structural ply as it would save a trip to the timber yard, but probably worth getting more timber.
@atk started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Maybe a chunk of 4x4 and some big timber screws?