Originally Posted by pmerritt
again, these are the same size, same specs but cheaper Futaba S3157. I can't see any major difference btwn this and the 3154s.
3157's are ~2mm taller versus, the 3154/3114's. The 3157 also has thicker and wider tabs on it which would likely need modification. Given that walkera essentially cloned the 3114 casing for it's 200 sized helis you may as well use the ones that are a good fit. Note that the 3114's are just a fraction of a mm smaller than the WK stock servos so you have to shim them with some tape if they're not screwed down.