The planes are 30% scale Stearmans and based on Balsa USA kits. There have been lots of modifications to increase the scale detail.
Lots of photos of the full size planes were taken for reference and each plane is based on a different full size one. There are still a few details to add which will probably appear at some point.
The engines are DA150s. Originally Mokis were installed but the DA150s were more reliable so the lovely sounding Mokis went in favour of reliability.
Just like the full size, each plane has a smoke system.
Thanks must go to the full size Breitling Wingwalking Team - ground team, pilots and wingwalkers - as they have been extremely helpful.