Give the Kangke site a look. I can't give you the reason why, but you may find quite a bit on info there. If not, give Brison R/C engines a call on Monday and speak with James. He will give you what he can, or put you in direct contact with Gary Allison at Brison. Base your calls on East Coast time, not Texas time.

I do know that the first run of the Revolution engines were released a little prematurely. They had a minor timing problem along with a couple of small parts fit issues. The next batch was held back to correct those items. The first of the new and well made corrected engines should be released shortly, if they haven't already.

Yep, we are pretty close, where do you fly?

Pat