OS 91 FX in Seduction
 

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

OS 91 FX in Seduction
 

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

What?
 

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)

OS 91 FX in Seduction
 

WAY too much!! A VERY light plane.

OS 91 FX in Seduction
 

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

You guys are all chicken :D 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!! :D :D :D

OS 91 FX in Seduction
 

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.

OS 91 FX in Seduction
 

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.

OS 91 FX in Seduction
 

Run it without muffler then :D :DIt 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.

91?
 

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

OS 91 FX in Seduction
 

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... :rolleyes: