breezinup and ed h, thank you both for posting the Lionel web site info and your thoughts on the Hudson models. I was looking around the Lionel web site today for the various Hudson locomotives and looking through the engine manuals when Lionel had a link. Although the catalog/website info didn't always mention flywheels, most of the manuals did have the information and the motors had flywheels (even the cheaper Hudson posted by breezinup). The 6-21956 set (6-28044 locomotive) didn't have an engine manual link, but the sister engine in the 6-21988 set (6-28065 locomotive) did have an engine manual link. The manual was very close to what ed h posted. Since the sister engine has a motor with a flywheel, and the only difference in the engines is signalsounds in one tender versus conventional railsounds in the other, I'm sure the 6-28044 locomotive has the motor with flywheel.
I copy interesting topics from the forum and save them as word documents on my computer. I was just looking at the photo of the baby Hudson/Hudson jr. comparison yesterday (before you posted it today!). It was in a topic I had copied about Hudson jr. locomotives and I wanted to refresh my memory about the different traditional size Hudsons by Lionel. It's a good picture to see the size difference between the baby and jr. locomotives.
Thanks again to both of you for your help.
