Check the sticky at the top of the page......

http://www.rcuniverse.com/forum/m_2286099/tm.htm

This is on the main forum page for the YS engine support.


actual HP ratings are very subjective, so many things play a role in them. But here are some numbers if you need numbers.

I will say this, the YS engines have equivalent power to most 2 strokes of the same displacement and in some cases they exceed the the 2 strokes for power.


Troy Newman
Team YS Performance