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 Posted - September 20 2014 : 12:45:34 PM
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I was wondering if anyone knows much about the Bowser-Knapp 4-8-2? Whats the difference between the Knapp and Bowser engine? I know the tender is a heavy cast bronze as I own one and the boiler is bronze too?
" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
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Country:  USA ~
Posts: 3145 ~
Member Since: May 07 2007 ~
Last Visit: April 04 2024
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Posted - September 20 2014 : 2:17:48 PM
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The biggest difference is in the drivers, side rods and valve gear. The early Knapp models did not use screws for their side rods. They used pins/studs with only the crank pin being soldered to the crank rod. They also had spoked drivers. These drivers often had problems with shorting out, therefore when Bowser took over production, they switched to the boxpoc drivers. Below are images of each type in my collection:
Bowser:
Knapp:
Otherwise, the boiler shell, chassis frame and all other castings are all the same. I actually have a few production pieces in my collection that never received final treatment and I even have the two-piece factory steam chest mold making castings. Maybe I'll post a few pictures of those.
Sean
"If everything seems under control, you're not going fast enough!" - Mario Andretti!
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Country: USA ~
Posts: 1729 ~
Member Since: June 15 2011 ~
Last Visit: June 26 2021
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Posted - September 20 2014 : 2:24:00 PM
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OK. Mine is a Bowser! Now to get the pilot truck and tender trucks! The fun begins when it arrives.
" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
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Country: USA ~
Posts: 3145 ~
Member Since: May 07 2007 ~
Last Visit: April 04 2024
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