Where are the 91FZ's??
03-12-2012, 06:07 PM
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Where are the 91FZ's??
Where are the 91FZ's?? I am having the hardest time finding YS airplane motors. I wanted to buy the 91 FZfor the Four Star60 I am building. I can't find them anywhere, is YS still making them?
03-13-2012, 03:27 AM
#6
RE: Where are the 91FZ's??
As stated above the 91 has been out of production for a while. The 70 makes great power and is very user friendly and the 1.15 is the same size as the 91. Just for a power comparison, I had a 91AC in the nose of Showtime 4D and it was a good match.
03-13-2012, 03:33 AM
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RE: Where are the 91FZ's??
The four star 60 suggests a .65 - .90 4 stroke. Do you guys suggest the 70fz-s or the 115? Originally I was going to go with a 90, but since it is now a 1.15 I am not sure if it is too big. The 1.15 is heaver than the 90's from OS and Saito, but with more power. I am not sure if the .70F
Z will be too small. I liked everything I readon the YS motors, but I am in the middle of the power bands it seems. Maybe I should go with another manufacture?
03-13-2012, 05:41 AM
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RE: Where are the 91FZ's??
The YS70 makes just a tad more power than the Saito 91 but not quite a saito 100 in my experience.
It may be a great match.
It may be a great match.
03-13-2012, 06:10 AM
#9
RE: Where are the 91FZ's??
I did a little searching for you on this and found a few guys flying OS 91 Surpass and their clones on the Four Star swinging a 14x4W which the YS 70 will swing with authority. The engine choice is up to you. Do I think the 70 would fly the plane well, yes I do. Could you ALWAYS use more power, sure. I saw one post where a guy had a 1.40FZ on his Four Star 60 with floats n it.
Like I said, I had a 91AC on a Showtime 90 4D and it would punch out of a hover. My 70 replaced a 63FZ and went from silly power to giggle like school girl power.
Like I said, I had a 91AC on a Showtime 90 4D and it would punch out of a hover. My 70 replaced a 63FZ and went from silly power to giggle like school girl power.
