"secret" info from castle.....
I am working on a new project to be shared in the near future and was doing some reasearch on the 4600kv. The tech at castle (who I will not name) said that the 4600 could handle 4s lipo, I had read a couple items about it and wasn't convinced. He said it is right at the redline limit and that it is the most powerful setup of their cm motors. Apparently the redline is right at 65-70,000 rpms........he said they do not post this info but that it is accurate, just thought I would pass this on so we can all have wicked fast 4600 4s setups!!