Building second DD w/ FAI GRRT
Out of curiosity I mailed Morris Hobbies where I purchased my engine from. I asked them what props worked for them and wanted their opinion about it.
They replied and said to use:
8 x 5, 8 x 6, 9 x 6, 9 x 7 are all good props for you to try. Have fun.
I think I am going to stick with what the guys on here have been saying to use. Since alot have the same set up as mine and know what works and does not work.