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Engine basics => Engine set up tips => Topic started by: Michael Millard on October 05, 2016, 08:00:03 PM

Title: OS fx 46
Post by: Michael Millard on October 05, 2016, 08:00:03 PM

 Hi everybody, Looking for what venturi and needle valve would work for stunt on an FX 46? I believe the id of carb into case is 13mm. Any help would be appreciated. Thanks ahead of time. Mike Millard

Title: Re: OS fx 46
Post by: proparc on October 06, 2016, 05:26:18 PM

Jim Lee is the man. He is in the vendors corner.

Title: Re: OS fx 46
Post by: Paul Smith on October 07, 2016, 11:10:45 AM

I have a couple of those.  A great RC or scale engine, but maybe a bit heavy for stunt.   Maybe you could just find a throttle position that works and go with it.

Title: Re: OS fx 46
Post by: Brett Buck on October 07, 2016, 06:49:04 PM

Quote from: Paul Smith on October 07, 2016, 11:10:45 AM

I have a couple of those.  A great RC or scale engine, but maybe a bit heavy for stunt.   Maybe you could just find a throttle position that works and go with it.

  It works very well for stunt. We used with no modification and about a .281 venturi and an ST spraybar. We used 12-4 3-blades and 13-4 two-blades, typical 46VF props of the time. The only modification was to ream out the exhaust outlet to the largest diameter we could with a Fox reamer (probably 3/8") without removing the stinger entirely. Launch revs were in the 11,000 range.

     Brett