ORIGINAL: dougtx
I have a question in regards to which engine to use on the ST50. Out of the Saito 82, Saito 91, and Saito 100, it appears that more comments are made towards using the 91 as opposed to the 82, however, according to Horizon Hobby, the 91 weighs in at 19.6, while the 100 weighs in at 19.5, so why wouldn't you want to use the 100 if it has basically the same weight as the 91 which seems to provide good results on this airplane?
Go with the 100! No reason not to go with a bigger motor at the same weight. I've got a YS .91 in mine and the power to weight is... satisfying.
