"1/2 A" & "1/8 A" airplanes These are the small ones...more popular now than ever.

Terminology

Reply

Old 12-07-2002, 03:27 AM
  #1  
Sunny_B
Senior Member
Thread Starter
 
Sunny_B's Avatar
 
Join Date: Nov 2002
Location: Tehachapi, CA
Posts: 208
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Terminology

What does 1/2A and 1/8A mean? I know it depicts small planes, but I do not know what the terms mean. What constitutes a 1/2A or a 1/8A plane?
Sunny_B is offline  
Reply With Quote
Old 12-07-2002, 03:39 AM
  #2  
ajcoholic
My Feedback: (10)
 
Join Date: Jun 2002
Location: Timmins, ON, CANADA
Posts: 4,236
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Terminology

In the early days of model competition, classes of engines were A, B, C and D, referring to under .199 cubic inches, .201 to .300 CI, .301 to .650 CI and over .651 CI respectively.

When the small engine came about in the late 40's and early 50's (K&B infant, Anderson Baby spitfire, etc) the new class was made for under .050 cubic inches called "1/2 A" as to denote the approx. half of the smallest common engine in the "A" class, the .09 like the Ardens and Atoms.

So then:

1/2A = .049 class,
1/4A= .020 class,
1/8A= .010 class.

Thus ends the lesson for today!

Andrew Coholic
ajcoholic is offline  
Reply With Quote
Old 12-07-2002, 03:44 AM
  #3  
Sunny_B
Senior Member
Thread Starter
 
Sunny_B's Avatar
 
Join Date: Nov 2002
Location: Tehachapi, CA
Posts: 208
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Terminology

Thanks Andrew. I appreciate the info. I learn something new everyday in this hobby.
Sunny
Sunny_B is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service