|
|
| Re: [PHOTOS] Re: [PHOTO] Re: R1s-9s (1569048) | |||
 |
|||
| Home > SubChat | |||
|
[ Read Responses | Post a New Response | Return to the Index ] |
|
||
|
Re: [PHOTOS] Re: [PHOTO] Re: R1s-9s |
|
|
Posted by randyo on Sun Feb 21 01:49:50 2021, in response to Re: [PHOTOS] Re: [PHOTO] Re: R1s-9s, posted by Joe V on Sat Feb 20 11:46:46 2021. As I have explained many times on this subject, the electric portions on the ABs did not manually advance but had to be advanced from a position for that purpose on the uncoupling valve which had 3 positions, off, advance, and cut. The normal procedure for coupling was to couple (which placed the brakes in emergency), recharge, do a stretch test and if everything was OK, advance or “shoot” the electric potion or “slide.” The electric portion on those cars was actually a flat plate or slide with contact fingers which when advanced actually pushed the slide on the other car back into the drawhead and made connections with matching contact fingers in the base of the other drawhead. Later electric portions like the ones on the D types, SIRT cars and R-1/9s had the contact fingers on the face instead of the bottom and were electro-pneumatically set up so that upon coupling, both electric portions advanced towards each other and completed the connection. As you said, the electric portions on the SIRT cars were of the newer type and would have easily mated with a D type or an R-1/9 but definitely not an AB. |
|
(There are no responses to this message.)
|
|