RE: ThunderTiger Rare Bear
Rich,
I'm running a YS 110. I've tried a Master Airscrew 14 x 9, didn't turn too fast. Had a Graupner 15 x 7 3 -blader on yesterday, but it only turned about 8900. I know the Graupner props are much wider than others, so I'm not sure where to go now. Maybe the same prop by a different manufacturer.
HighSierra, what prop do run on your 140?