I'm building a Great Planes Extra 300s .60 size and am now contemplating
powerplants. The choice has come down to either the OS 91 FX or the Super
On the up side I have never had any relaibility problems with OS engines but
the down side is that here in Australia it is nearly $200 dollars dearer
than the Super Tigre. $200 is a lot of money to me at the moment.
I once owned a Super Tigre g51 once and power wise it impressed me. But
getting the low speed needle settings correct was an all out BITCH!! I had
numerous unannounced engine outs until I got it kinda sorted.
Where are Super Tigres now made? Italy?? That would explain it... Kinda like
a Ducati I once owned. Impressive as anything but really high maintenance.
I've spent a LOT of effort building this Extra and any input would be
18 years ago