My very knowledgeble friend in the US said that whole family (Rocknroll Heaven) is small. Don't get me wrong, he is a huge fan of the horse. I am actually not really bothered with horse's heights as it is, especially if the family is of average or large size and said horse seems to be the only small one.

I am only asking because I would like to use him, but the mare we have pencilled in is also from a family of small horses. Built like a tank, but not tall. While I don't get caught up in sire sizes, I'm not out to intentionally breed a small one either, if that makes sense. People say size doesn't matter with racehorses, but I am yet to find someone that says that they are trying to breed a small horse. lol.