RCU Forums - View Single Post - Plane sizes
Thread: Plane sizes
View Single Post
Old 01-13-2012 | 05:22 AM
  #3  
adavis
 
Joined: Sep 2003
Posts: 478
Received 0 Likes on 0 Posts
From: London, UNITED KINGDOM
Default RE: Plane sizes

The number is the recommended glow plug (internal combustion) engine size.

15 = 0.15 cubic inches (2.5cc)
40 = 0.4 cubic inches (6.5 cc)

Best Regards,
=Adrian=