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46FX or 50SX for GP Tracer

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46FX or 50SX for GP Tracer

Old 04-03-2003, 10:19 PM
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t_man75
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Default 46FX or 50SX for GP Tracer

OS 46FX or 50SX, Which one would give me better performance for a GP tracer? I am considering getting into pattern flying, but also have a need for speed.
Old 04-04-2003, 02:12 AM
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Spicoli
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Default 46FX or 50SX for GP Tracer

If money is not an issue go for the 50sx. It has about 10% more power.
Old 04-04-2003, 03:05 AM
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JimTrainor
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Default 46FX or 50SX for GP Tracer

For either, I would investigate a performance muffler. i.e. ultra thrust or Jett, or even a Tower muffler.

I have Tracer with a 46fx + Jett muffler installed, but not yet flown. If you mount the engine side ways (near 45 degrees) the muffler will fit in under the fuel tank compartment. Just a small intrusion into the compartment - maybe 3/4 inch. It requires building a new hatch cover to accomodate the muffler.

If I find I want more power on mine I'll probably try the 50sx.

There are some other 50+ size engines I've read about here. For example the Irvine 53 sounds interesting. Another one is the the Jett .60L ($$$$)... maybe too much power... if that is possible. It is a light engine - a 60 in 40 case. Or perhaps a YS 63 (4 stroke) - it should permit you to mount the tank over the wing under the canopy. A 10 oz Sullivan round tank will fit. I will try that tank location with the 46fx and a perry pump. ... or or or or ... okay I'll stop
Old 04-04-2003, 02:41 PM
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BeauMiller
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Default NovaRossi .50!

The Tracer is my next project and I plan on using a NovaRossi .50 w/ Ultrathrust muffler for power. My buddy uses a .46 FX on his with good effect.....but I still think my TH Kaos .40 w/ 46FX and Tower muffler is a little faster (but not much). He seems to really like the plane/engine combo.

Beau
Old 04-12-2003, 06:36 AM
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Cdallas2
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Default 46FX or 50SX for GP Tracer

Just remember that it's not meant to be a speed demon. I'm almost finished mine and I'll be using an MDS .46. I think that should be plenty.

I'm with Jim: I think the best engine would still be the YS .63 but they're pretty hard to find for a decent price.
Old 04-12-2003, 12:35 PM
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t_man75
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Default 46FX or 50SX for GP Tracer

Thanks for all the help. I decided to go with a Irvine .53. I looked at the YS .63, but I prefer 2 strokes.
Old 04-12-2003, 12:41 PM
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Default 46FX or 50SX for GP Tracer

No ys??? awwwwwww

I guess its different strokes for different folks........(Sorry, I just could'nt resist....).

btw- I have read a lot about Irvine .53 on this forum, finally got to see one in action yesterday......impressive....

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