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Originally Posted by overlandflyer:

my favorite steam locomotive sound has always been the distinctive side rod rattle of the Lionel 671/681 steam turbines.  along with its old E-unit buzz, it's one of the few engines i could probably ID with my eyes closed.

What "distinctive side rod rattle?"  My 681 doesn't rattle, nor does the E-unit buzz (at least, no more than any other PW Lionel E-unit).

 

I guess I'd have to paraphrase Rich Melvin, and say that a properly maintained Lionel turbine doesn't rattle.

 

Originally Posted by Big Jim:

Notice at the first of the pacing sequence the two sets of drivers are out of sync (39 sec. mark) only to get into sync shortly on (1:15 mark) and stay that way. Can't tell from the video, but, maybe going through a curve caused that to happen?

Articulated locomotive engine sets never stay in sync, be they under power or being towed.

Originally Posted by Rusty Traque:
Originally Posted by Big Jim:

Notice at the first of the pacing sequence the two sets of drivers are out of sync (39 sec. mark) only to get into sync shortly on (1:15 mark) and stay that way. Can't tell from the video, but, maybe going through a curve caused that to happen?

Articulated locomotive engine sets never stay in sync, be they under power or being towed.

There is plenty of proof out there that they do, but, some people just can't be convinced. What was going on from 1:15 to 2;10?

Last edited by Big Jim
Originally Posted by gunrunnerjohn:

Since that video seems to show the steamer not under power, I"m not sure what that proves.  I doubt the behavior under power would be the same as being towed.

 

You would be surprised. I have witnessed UP3985 going in and out of "sync" while under very heavy throttle, ascending mountain grades. Once the locomotive gets up to reasonable track speed, then the exhaust sounds seems to stay pretty well "in sync", no mater what the two different engines do, i.e. sometimes the exhaust sound will change from "in sync" to slightly "out of sync" for a few seconds.

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