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  • December 04, 2024, 05:45:56 AM

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Author Topic: OS 20FPs compared  (Read 651 times)

Offline Dave Moritz

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OS 20FPs compared
« on: November 03, 2024, 06:18:26 PM »
I've got two, unrun 20FPs on hand, one off E-Bay and the other from an estate. As you can see, they are different versions. I left the carb on one and placed a venturi on the other. My brother might want one for RC and I'll keep the other for stunt. Have I got the fuel feeder configurations correct or should I switch them around?

Dave Mo...

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Offline Motorman

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Re: OS 20FPs compared
« Reply #1 on: November 03, 2024, 08:53:31 PM »
Which one has the better piston fit?
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Offline Brett Buck

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Re: OS 20FPs compared
« Reply #2 on: November 03, 2024, 09:12:20 PM »
Quote from: Dave Moritz on November 03, 2024, 06:18:26 PM
I've got two, unrun 20FPs on hand, one off E-Bay and the other from an estate. As you can see, they are different versions. I left the carb on one and placed a venturi on the other. My brother might want one for RC and I'll keep the other for stunt. Have I got the fuel feeder configurations correct or should I switch them around?

Dave Mo...

    I hate to even ask, but is the iron-liner engine drilled out/damaged for a larger spraybar, or is that the special Enya OS-copy?  I assume you have the mufflers.

     If all else was equal, I would use the ABC engine with the E-2030 muffler, and get a STOCK venturi and STOCK spraybar assembly, or the Enya OS copy.

      Brett
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Offline Dave Moritz

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Re: OS 20FPs compared
« Reply #3 on: November 04, 2024, 12:48:57 PM »
Brett:

Yes, mufflers available on both, the 842 model (shorter than the 2030).

The CL assembly is: venturi is .253" (6.45 mm) while the spray bar is .137" (3.48 mm). I think open area is in the useable range, if a bit small?

Will keep an eye peeled for an original OS assembly for CL so that I can keep the ABC version original or hunt down the Enya setup if the above isn't workable. The iron liner version will make for a decent RC perhaps!!

Thanks.

Dave Mo...
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