Just wondering what you guys thought about this combination: Seduction Freestyle with an OS 91 FX??

os 91 FX on a seduction FS will be too much motor! I think you should consider something less powerful..

That's like a GE LM2500 turbofan on an ultralight! A .50 2stroke will take this up like a rocket. Did you mean the Seduction Demonstrator?(60 size)

WAY too much!! A VERY light plane.

From a previous post That means the 91 would be perfect!!

You guys are all chicken The 91 fx is PERFECT for this little beast. Lets compare weights. The current worlds "perfect" engine is the YS 63

specs


Displacement: .623 cubic inches
Compression Ratio: 9.5:1
Operating Range: 2,000 to 12,000 RPM
Weight: 17.9 oz

Take note of that 17.9 oz weight

Now us in New Zealand think that this is far to tame, look at this

.91 FX

Displacement: 0.912
Operating Range: 2,000-16,000
Output (BHP@rpm): 2.8 @ 15,000
Weight: 19.3oz

Now thats less than 2 oz in difference so I say give it a try
should be unbelievable power!!

I have a 91fx in my doghouse that is 6lbs even. I would not want any less power . this is a perfect match for a 6lb plane. go for it.

Um, that weight spec'd above is WITHOUT the muffler!

This is the specs on the OS 91fx
SPECS:
Displacement: 14.95cc (0.912 cu in)
RPM range: 2,000 - 16,000 Bore: 27.7mm (1.090")
Stroke: 24.8 mm (0.976")
Compression Ratio: 10.1 : 1
Weight: 550g (19.42oz) 24.3 oz w/muffler

And the ys 63:
SPECS:
Bore: 1.03" (26.2mm)
Stroke: 0.74" (19.0mm)
Practical RPM: 2,000-15,000 rpm
Horsepower: Not given, contact YS
Crankshaft thread size: 8 x 1mm
Weight with muffler: 1.11 lbs (17.11oz)

So that is a difference of 7.19oz. Make your own judgement if you want to add that much weight.

Run it without muffler then It would have a nice throaty big-bore sound.... I wasnt being serious, I fly with Matrix140 so he deserves some for asking a question like that. I still think a 91 in a 40 sized airframe would be pretty cool, how about hovering on the throttle trim.

i have a OS-91 4 stroke on all my fun fly planes oh no is that flutter i am hearing he he i have never had a flutter problem but i do have a problem the the plane always flying like a helo/T-roll

I have this plane and it is very lightly built. If you want to overpower it that much for no reason then go for it...