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I purchased a JLC Union Pacific Challenger(28009) from a forum member, new in box. Wonderful detail and features. Needless to say the only issue is the smoke performance is less that optimum. I performed the smoke unit upgrade as recommended by Mike from Lionel ( great video giving instructions, larger hole in circuit board and seal, oiled impeller, new smoke batting, presoaked etc). I still don't like the smoke performance. Any suggestions from members on a smoke unit upgrade that I could install. Would there be a recent new unit from Lionel I could swipe out ? Or any other manufacture suggestions that would work in this locomotive. Appreciate any advice.Al B

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Thanks Sinclair. I thought I had missed something and I viewed the video again. I think I may leave it alone rather than risk too much heat and causing other problems. It is a $900 unit.
Maybe candidate for professional upgrade down the road . Will get chuff upgrade done at same time.
Al

That number is clearly wrong, the 28009 is a semi-scale Hudson!  I suspect what you have is the 28064 JLC UP Challenger

 

 

I routinely replace the 27 ohm stock resistor with a 20 ohm resistor, it really does help the smoke output.  Of course, I also usually am installing the Super-Chuffer as well.  I have the JLC Challenger sitting behind me waiting on it's Super-Chuffer install, it'll get the usual smoke tuneup in the process.  Part of most of the installations is the four chuff upgrade as well.

 

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