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General control line discussion => Open Forum => Topic started by: James C. Martin on May 09, 2014, 06:25:11 PM

Title: OS 46 FX for control line
Post by: James C. Martin on May 09, 2014, 06:25:11 PM

are there any other 0S 46 fx engines bieng used for control line? I have a new in the box one I purchased years ago and got the venturi and needle and spraybar  from a OS SFS 46 still need to bench test this any opinions on this set up?

Title: Re: OS 46 FX for control line
Post by: Bill Barber on May 11, 2014, 02:27:55 PM

 I have a OS.46 FX  also and haven't used it yet . I did a search here on Stunt Hanger
and found a lot info on .46FX , just type in in the search section  OS .46 FX .
  

   Cheers Bill

Title: Re: OS 46 FX for control line
Post by: john e. holliday on May 12, 2014, 09:04:31 AM

I have an OS 46 F series of engine.   Will have to pull it out of the stash and see which one it is.  I know it weighs a ton.  It will be going into Don Hutchison design I got from Jim Snelson when he had it at VSC.   By the way the engine ran great in the plane and was very easy to needle.

Title: Re: OS 46 FX for control line
Post by: MarcusCordeiro on May 12, 2014, 12:50:19 PM

I have used one and though it's really heavy,it ran OK.
Problem was the inside of the sleeve started to chip off and then it cracked... One friend had a similar problem, but our engines were used already.
Low pitch and hi RPM...
Please, post your results...

Thanks

Marcus

Title: Re: OS 46 FX for control line
Post by: proparc on May 12, 2014, 03:52:04 PM

Quote from: MarcusCordeiro on May 12, 2014, 12:50:19 PM

I have used one and though it's really heavy,it ran OK.
Problem was the inside of the sleeve started to chip off and then it cracked... One friend had a similar problem, but our engines were used already.
Low pitch and hi RPM...
Please, post your results...

Thanks

Marcus

This was a common problem with the FX. "Supposedly" the AX line fixed that problem.

Title: Re: OS 46 FX for control line
Post by: Curare on May 12, 2014, 03:59:23 PM

It was more of a problem with the SF series. I have a 61SF that had a seriously flaky liner. Still runs ok though, just a little wimpier than before. If I recall correctly they were the last true ABC motors.

All the FX's I've had have had fairly solid plating, but I believe they're ABN.

Title: Re: OS 46 FX for control line
Post by: Garf on May 12, 2014, 04:37:38 PM

What is the difference between the FX and the FSR?

Title: Re: OS 46 FX for control line
Post by: Andrew Saunders on May 12, 2014, 06:46:47 PM

Dont use the OS MAx neddle valve assembly. Use a Super tigre needle valve assembly. Youll get a better run and a finer adjustment on the RPMs.