RE: Urgent! a 90 size two stroke with pump for pattern and 3D
When you can buy a OS FX 91 for $199. Adding a pump to it isn't expensive.
A 16x10 or 16X12 on a pumped OS FX91 with wrap-around header & ES pipe is a sweet set up.
I'm impressed with PatternPilot running a NON pumped os with the tank on the CG and apparently no fuel draw problems. I wouldn't try it- a $30 pump is cheap insurance of a good run consistently. JMHO
Now if they build a OS 100 (smaller version of the 140) it'll probably cost 75% of a 140. Also it'd probably be quite a bit heavier than the 91, negating alot of the power increase. If I was gonna spend that kind of money - I think I'd go back to the YS 110 ( replaced the 91) or step up to a 120.
Again -Just My Humble Opinion
ps -I'm putting a YS 91 in my JR Explorer V90
Eddie