Whats The Diffrence? - RCCanada - Canada Radio Controlled Hobby Forum
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Old 09-22-2004, 05:36 PM   #1
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Whats The Diffrence?

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I was just wondering what is the difference between a OS 46 FX and a OS 46 FXi ?

Cause I have the FXi But Was Wondering Whats The Diffrence?
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Old 09-22-2004, 05:47 PM   #2
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Other than a limiter on the hi speed needle (so you can't lean it out too much as a beginner), I believe the only difference is the hi speed needle is installed on a metal plate that is then bolted to the back plate. The fx had a cast piece that held the needle and was actually part of the back plate (stuck out like an ear). It broke quite often on impact (ask me how I know ).

Anyone else?
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Old 09-22-2004, 05:49 PM   #3
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I have a couple of OS 46FXs and have looked at the FXi. The big change is that the needle valve is mounted on a stamped steel bracket vs being cast into the crankcase backplate. This is GOOD.
The other change is the reduction to four head screws from six. I'm not so sure this is as positive.
Plus the new square section muffler.

The rest of you folks out there - did I miss anything??
Keith J
Secretary-Radio Control Club of Detroit
RCCA member #622
AMA# 717601
Ex-MAAC (Oshawa)
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