A hard plastic firewall to fit 30.5 mm outside diameter F5J electric glider fuselages. This is usually also the spinner diameter. Motor/gearbox mounting holes have been pre-drilled for the Powerline 10XX motors fitted with their 6.75:1 gearbox with 4 holes on a 17.5 mm circle.
Note the 29.2 mm dimension on these firewalls is the fuselage front inside
diameter i.e. the outside size less 2*fuse wall thickness
|Powerline 10XX 30.5 Plastic Firewall Specifications|
|Fuselage outside/spinner diameter
|Fuselage inside diameter
||4 holes on a 17.5 mm circle
Marked "Explorer 30"