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8 replies

Polar Express Smoke Unit 6-28649

StPaulStPaulOGR Forum Member

I tried using the post from 2013 but it was closed sooooooo

my smoke unit was not working so disassembled the engine opened smoke unit to find the resistor was in 2 pieces! not sure what it uses but long ago I bought some rebuild smoke kits for post war steamers so I soldered one in left the sleeve off and the original batting was still in pristine condition.

I put engine on my test station and awwwww no smoke opps I had turned smoke switch off after sliding the switch to on position it smoked like all get out. the downside is I get more smoke out the bottom than I do the stack not that the smoke out stack is anemic it smokes very well but I believe it would be better if very little came out the bottom.

I checked the smoke unit batting and it is aligned with both holes in bottom of smoke chamber the pistons 2 ball bearings are free to move inside the tabbed area that keeps them from falling out.

the piston also has a spring does it matter which end goes towards bottom of smoke chamber? is there a cure for so much smoke escaping from piston to underside of smoke unit or is this the nature of this particular smoke unit?

 

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StPaulStPaulOGR Forum Member

GUNRUNNER JOHN  you are correct as I tried gluing 0.10 sheet styrene to the piston idea was good but the glue took up the extra space  so wound up taking it off.

but I have discovered on my unit those 2 ball bearings do not entirely close off the holes as I put a light on workbench and then laid the smoke piston on top of it and put bearings into position  and I could see light shining past them a good 1/32" so not sure how to remove them and see if a larger size would still allow it to work.

 

Last edited by StPaul
StPaulStPaulOGR Forum Member

thanks to all for your help and ideas I have done all I can and will just let it have its own steam cylinder smoke feature!  I have cleaned piston its chamber both smoke holes in chamber are clear and also the bearings to close off smoke holes are clean and free of any debris. the piston moves freely also.

SF Santa Fe 3751OGR Forum Member
StPaul posted:

thanks to all for your help and ideas I have done all I can and will just let it have its own steam cylinder smoke feature!  I have cleaned piston its chamber both smoke holes in chamber are clear and also the bearings to close off smoke holes are clean and free of any debris. the piston moves freely also.

The newest vision line engine has been revealed! I knew they were wrong when they said that there was no 2017 vision engine. Lionel just gave it to St. Paul for testing. But now the cat is out of the bag. Where can I preorder?

Last edited by Santa Fe 3751

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