Hi Dave,

I was wondering about the 12.25 x 3.75 prop myself thinking it would be great on the 63. I only have about one gallon run in my engine but the 14 x 4 seemed to be a little too much. It still had great responce....better rev up than my Irvine 53's or anything else I have ever had.

Has anyone tached the 63 with that prop? By the way as much as I think of my 53's I really think you have a great engine here 63.

Thanks,

Tim