Now that it is mentioned, if you did get that much dust in there i can see it totally toasting bearings. Surely they see the dirt long before, and for a longer duration than the p/s leave would. At the amount of rpms these engines make, a piece of dirt can go around in a bearing probly 10k times or more before you will even know it!

Since we are on the bearing topic would one of these work on the werks engines?

http://www.amainhobbies.com/product_...w-14mm-Bearing

I know these engines are priced so darned well it almost isnt even worth it (in most cases) lol. But it might be a good tool to have around if my fleet starts expanding.

also what are the bearing sizes? same as the other name brand engines? nova's etc?