Wharram Builders and Friends

A Photo & Discussion Forum for Wharram Design Enthusiasts

Here is a Sketchup file drawn at 1:1 scale in inches. Sketchup is a free program you can download here:


The the hull supports hinge forward on 4 vertical hinges.

I added a tandem axle instead of the original one shown for safety.

Use the icon that looks like a tape measure to get any measurement.

For changing views and just exploring the trailer use the icon that has a red and green arrow going around a vertical rod, then move your mouse around and you can rotate it in 3D.

Hope this helps and my apologies for not getting this posted sooner.




Views: 2382

Reply to This

Replies to This Discussion

Hello Bill,

would you please remember what was the thickness of the material used? I am asked to build a trailer like this.

Thank you in advanced.

Pavel K.

Greetings Pavel, I will go and measure tomorrow and let you know.

Bill Barker

Greetings Pavel, about 5mm. (my apology for the delay)


Bill Barker

Hello Bill, no problem.

Thank you very much.



Thank you Bill for doing this work and sharing with the community.

After taking delivery of the steel four days ago, we already have the central "box" almost completed and most of the wing and cradle components are cut. Hoping to have the build completed and trailer registered on the road in four weeks (subject to delivery of parts). Then it's a 2000km drive to pick up my boat!

There is no way I could have done this without your help.

Thank you!

If anyone still active on the forum has built this trailer I'd appreciate a close up pic of the hinge used for the swing out cradles.


Reply to Discussion


© 2024   Created by Budget Boater.   Powered by

Badges  |  Report an Issue  |  Terms of Service