I'm looking for a second plane, I own a .40 size trainer that I've become fairly proficient with. I was wondering if anybody had anything to say about Ace's Simple Ultimate Bipe? Is this the sort of plane that requires more skill than I currently have, only been flying about a year and a half now. I have an OS .25 and .15 for power and a Futuba 8 channel for a radio with standard servos. Will the radio work or do I need smaller servos? Any comments would be more than welcome
Thanks
Bryan Danley

Brian
You might want to put that Ultimate bipe a few pegs further down on your "airplanes to do" list. It's a good plane but not a second plane.
If your OK with ARF's try the Lazy Tigre 51. Your OS 25 will be a perfect match. By using the right prop you can have a tiger or a *****cat. I fly 1/4 scale but go back to the Lazy Tiger for fun. Use a 9/4 prop to start and as you get more confident work up to a 9/6 or 9/7

What does the term 1/2a refer to anyway?

I figured 1/2A referred to scale size, something on the order of 1/12th scale only a little smaller yet

1/2 A refers to all the planes that were powered with .049 and
.051 size Cox style engines

Hey FarmerBoy,
We have a review here in RCU on the Ace Bipe.
http://www.rcuniverse.com/showthread...27&forumid=142

I thought 1/2A was contingent with the engine size. Anything under the .10 mark was considered 1/2A where I'm from..

The old AMA engine class codes was for competition catagory purposes not used for many years now with the exception of SAM vintage oldtimer contests and the Vintage Stunt Championships for vintage controlline.

The catatgories were changed over the years to meet the needs of what was being flown at the time The original classes were: A -.05 to .20, B - .20 to .30, C - .30 to .65. with the advent of the micro glow engines in 1947 the 1/2A up to .05 class was added and later class C was broken down with class D also.

With 1/2A class limit being at .05 this is the reason most 1/2A engines were designed at .049. Another example of this with the limit for class A at .20, most were designed at .19 as were most class B engines were .29's.

In the late forties or possibly early fifties the (pulse) Jet class was added.

When Cox originally came out with the .010 with that huge three inch prop there was talk of a Quarter A class but this may not have become fact even though the expression 1/4A did find its way into the venacular of the time.


John

Thanks. Great in depth explanation.