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 Posted - January 31 2007 : 1:04:24 PM
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Of the various diesel models made by Tyco, (and later Mantua) I believe the GP20 is unique in that it had a major change in the shell's tooling.
When introduced, the GP20 had no dynamic brake "blister," making the model correct only (at the time) for the New York Central's locomotives.
Later, the powers that be in Woodbury Heights modified the shell to add the blister. When did this happen?
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Posted - January 31 2007 : 3:11:07 PM
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hi i understand what a dynamic(not regenerative)brake is but can someone show one on a tyco gp20,not a modified or home made one,ken
Edited by - catfordken on February 01 2007 09:22:01 AM
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Posted - January 31 2007 : 3:16:57 PM
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Hey Ken:
If there's a big hump usually on the long hood particularly on EMD GP's that look like shoulders, those are DB's.
With DB's
Gareth
WO DB's
Edited by - romcat on January 31 2007 3:20:58 PM
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Posted - January 31 2007 : 3:23:58 PM
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hi gareth i know that but have not seen a tyco with one,as i can only find ref to an upgrade? not a moulding change will as usual stand corrected ken
Edited by - catfordken on January 31 2007 3:39:37 PM
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Posted - February 01 2007 : 09:24:54 AM
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| hi gareth what model maker is the gp in photo marked 01/27/2007 ken
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Posted - February 01 2007 : 2:54:49 PM
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Ken,
Both of Garth's GP20s were built by Tyco/Mantua. The early models were produced without dynamic brake blisters. When Mantua rereleased the GP20 in the early 90s, they used the old shell with no changes. Even the slots for the old power truck designs were left untouched. They did mold a DB blister as a seperate piece that was just press fit on. The modeler could easily remove the blister and replace it again later. The main changes on the rerelease was the chassie. It was now a solid, cast metal chassie/frame. The loco gained all wheel drive, all wheel electric pickup and a can motor. Later releases added a single flywheel.
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