The truth about what? The truth that Saito's are inferior engines?

I wasn't going to say anything, but oh well. I used to have two Saito 72's. One was the regular silver version, and the other was the Golden Knight version. They both required a significant amount of break in time (3 gallons of fuel each) before they were able to achieve a reliable idle inverted. The highest rpm I could get out of them was 10,000 on a 13x6 prop. Needless to say, they were replaced by a couple of YS 63's. Both YS 63's achieved rock steady idle inverted only after two tanks of fuel, and both peaked out at 11,700 rpm on the same 13x6 prop.

Here is the ground rpm on a YS 63:



Yep, that's 11,300 rpm rich on a 13x6 prop.

Gotta love these:



I would never go back to Saito again.