Largest Harp Machine I own
My Singer 66 has the largest harp of my machines @ 8.5 inches. BUT I haven't mastered FMQ on it YET!! But I WILL, by watching Tim Latimer's videos and driving him nuts with questions. I found a foot that I think will work.
Sylvie is a 1910 Treadle, that Singer sent me a certificate for to verify the date. Works like a dream and stitches that would make many new machines cry with envy. I use her weekly and am teaching a little neighbor girl to sew on her as well.