Originally Posted by
sosidge
You set the response speed on each channel. With the Futaba radios, all channels default to "Digital", which is suitable for all ESCs and all Digital servos. You have to actively change the settings to SR or UR. I would imagine there is a non-zero number of users who have bought an SR or UR servo but still run the channel on the Digital setting and aren't even getting the supposed benefits of the faster frame rate.
That's possible, but simply setting the radio to SR/UR won't work. You need to configure Futaba servos explicitly to work with SR/UR mode (which is why the transmitter came with a sheet of SR/UR stickers to mark your servos). Some other brands seem to autodetect this mode. I know some SRT servos work with SR without addition configuration. There's also the various Sanwa protocols; which has even wider 3rd party support. I would not be surprised if many of the top drivers using Sanwa are also using the faster servo modes. Sanwa and Flysky are a lot more popular than Futaba at the highest level (it was at the last ETS race, at least). (which I believe is more down to marketing/sponsoring rather than objective quality).