Re: [CBQ] Dynamic Brakes

["jim cunningham" <jimc1182@charter.net>]

The GP7s&9s along with most Fs had a dynamic brake field loop cable that was extra from the 27 wire MU cable and only DB equipped locos had the receptacles for them , without that cable the DB would not work on any locos past where the field loop cable could be used but would work on any locos on the head end of the consist that had them installed.

Hope this is what you were looking for and yes I did work on these locos as an electrician when they were in service.

Jim, Cunningham

 

 

From: CBQ@groups.io [mailto:CBQ@groups.io] On Behalf Of Jerry Sheffield
Sent: Friday, February 28, 2020 6:13 PM
To: cbq <CBQ@groups.io>
Subject: Re: [CBQ] Dynamic Brakes

 

John,

 

My understanding is that only a locomotive equipped with dynamic brakes can activate them, therefore, the GP's would not be able to control the dynamic brakes on a locomotive so equipped.

 

Jerry Sheffield

 

On Fri, Feb 28, 2020 at 8:41 AM John Olson <trains28@jimsjunction.com> wrote:

     I have a question. Since all of the Q's freight F-units (including
FT's) were delivered with Dynamic Brakes and none of the GP-7's or
GP-9's were- when the 'Q' spliced one or more of these GP's in the
middle of a 4-unit set of F's, for extra horsepower, could the Dynamic
Brakes still be used... and would it  activate on all four of the F-units?

--
John Olson- owner

Jim's Junction
811B 16th St. West
Billings, Mt 59102

406-259-5354
<trains28@jimsjunction.com>
See us on FACEBOOK @ Jim's Junction
See us on GOOGLE @ Jim's Junction

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