Differance in carbon & plastic
 

Broke my rear B44 arm today, just replacing it now, but the pair or spare ones i have are carbon, should i replace just the plastic one with carbon or should i relace them as a pair. then keep the ok plastic one as a spare?

Any differances in handling?

I can't say I know exactly what it'd do but I assume it'd just stiffen the rear up.

If I was you I'd change both so it's the same tension both sides - unlikely that'd you'd notice it though.

I dare say you won't feel the difference...

I had to use an EA3 left and Graphite wishbone right on my Losi for a race, didn't feel a difference...