Marui tub chassis stiffeners

thingiverse

For the Marui R/C Super Wheelies and Big Bear tub chassis. A common issue on 1984 Marui tub chassis is that most of them had their sidewalls opened at one time to accommodate a 7.2v battery placement. As a result, the chassis became weakened in its mid section where it's most prone to flexing. To make matters worse, the battery weight was centered directly over this vulnerable area. Consequently, when running, the chassis would flex and twist excessively and the suspension would fail to function properly or at all. In extreme cases like heavy landings, the body may even self-disconnect from the nose. To resolve this issue, install stiffeners that box in the U section of the chassis to restore its original strength. You can choose to glue them in place or not - once installed, the body will securely hold them in position.