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Matt91

Difference between R68 & R68A?

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R68As have a high rollsign on the front, the R68s rollsign is lower. Also note the car numbers: R68s are 2xxx; R68As are 5xxx.

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R68As have a high rollsign on the front, the R68s rollsign is lower. Also note the car numbers: R68s are 25xx; R68As are 5xxx.

 

This is the only way I think I can be able to distinguish an R68 and an R68A from now on. And R68s are higher than 25xx but don't go into the 3000s, I'm sure of it.

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This is the only way I think I can be able to distinguish an R68 and an R68A from now on. And R68s are higher than 25xx but don't go into the 3000s, I'm sure of it.

 

It ends at 2924.

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It ends at 2924.

 

Lol...I was right on the ball with that!

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This is the only way I think I can be able to distinguish an R68 and an R68A from now on. And R68s are higher than 25xx but don't go into the 3000s, I'm sure of it.

 

Whoops, they start at 2500, that's what I must have been thinking of.

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Also operationally, their brakes are VERY different. The R68A has an e-cam device controlling the brakes so there is a delay when a T/O moves the brake handle to when the train actually starts to slow down. Once the brakes start applying a T/O can adjust the range of the braking but he can't go back to release (and then try to apply brakes again after to stop the train) otherwise he will have to deal with the delay again and probably overshoot the station.

 

The R68 brakes are much more responsive and similar to other SMEE brakes

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I'll give a full explanation of the differences!

 

R68's are numbered 2500-2924, and built by Westinghouse Amrail with the latter part in a combination which included Alstrom! All are in 4 car sets except 2916-2924 which are singles for the Franklin Ave. Shuttle. The Rollsigns behind the screens are flush to the glass, and also the interior, it buldges out. The keyhole is inside a round silver ring for the rollsign. The floors are now black specked to once was the standard beige. The interior is deeper in its shine on its stainless steel. Also note the interior number board placement to which is to the right of the Emergency Brake decal at the cab ends. Also the T/O's cab at the full length end the door swings open to the inside of it. Note on the 4 car sets, the controls are at the full-cab ends on the even numbered cars and are arranged for example 2500-1-2-3, 2504-5-6-7, 2508-9-10-11, 2512-3-4-5, 2516-7-8-9. Then it goes up in the sequence right up to 2915. In the singles, all cars 2916-2924 have controls in both ends (full, and half width cabs). Also on the single Franklin Ave. Shuttle cars, the side rollsign boxes were removed in favor of decaled rollsigns in its place. Another thing is also the rollsigns were removed in each non-operating cab. This conversion took place in 2000. Also outside, the side rollsign has a silver strip between that, and the window underneath. End rollsigns are mostly lower flush in the front except R68's from 2780-2924 to which have a higher rollsign with a slot underneath for what I guess was gonna be a slot for an extra screen that never materialized that the R110's in both series had (time interval screen display board). Number boards are all in the same general locations where they are behind the first sets of doors on each end, and windows. MTA logo is between the cab window and first set of doors on both sides on the right fronts.

 

R68A's are numbered 5101-5200, and built by Kawasaki. All are in 4 car sets now to which was done in 1997-98. All came as singles! Most with the exception of a few have the black speckled flooring. Rollsigns are flush with the wall inside, and the rollsign inside of it is recessed. Also the key hole for it has no ring around it. Cab doors slide, and interior number board placement is above the Emergency Brake sticker at the ends. Also as mentioned on a previous statement, the end rollsigns are all high with no slots underneath, and no red door sticker at the end doors. The interior walls are duller than the R68's built by Westinghouse Amrail. Outside side rollsigns are inside a solid plate of glass rather than in a frame that the R68's have. Also outside numberboard placement is even spaced where the MTA logo is behind the cab, and numberboard with flag behind the first set of doors on one end, and at the other end between the rear door set, and cab window is the numberboard. All R68A's are linked together as follows for example 5001-2-3-4, 5005-6-7-8, 5009-10-11-2, 5013-4-5-6, 5017-8-9-20. Note that again the even cars at the full-length end are the control cars of each end of that particular set.

 

Both sets can be interlinked, but rarely done because like intermixing the Alstroms, and Siemans in the R160's, and R142's, and R142A's, braking is a compatibility issue.

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Thanks everyone. I think the rollsign and ##s will be the easiest to remember

 

lol u just disregarded all that neil has so wonderfully put

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I'd provide picture proof, but I don't want to get that far! When my Grandparents were still alive, I was on the Brighton 6 times a year, now if lucky when I railfan, once, or twice a year, so of coarse the D was there, now the Q, and B, so its not hard to remember if you always ride them!

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Also, the cab window on the R68 slides open while the R68A's cab window swings open. If this is wrong, please say.

 

lol switch them around. R68 swings open while the R68A's cab window slides open.

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*R68 (2500-2799): http://images.nycsubway.org/i79000/img_79700.jpg

*R68 (2800-2924): http://images.nycsubway.org/i88000/img_88516.jpg

 

R68A (5001-5200): http://images.nycsubway.org/i5000/img_5890.jpg

 

 

Differences:

R68 (2500-2799) have their front signs low. (Mostly used NOW on the (D))

R68 (2800-2924) have their front signs a lil higher, and have the rubber on their side windows where the roll signs are. (Mostly used NOW on the (:P(Q)(S))

 

R68A (5001-5200) have their front signs higher, and DO NOT have the rubber on the windows where the roll signs are. (Mostly used NOW on the (B)(Q))

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Also, I don't know if it is me, but the R68A sounds a bit like an R40 when it is moving.

 

yup to me yes a bit. Makes me sound like im on an R62

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lol u just disregarded all that neil has so wonderfully put

 

I'll give a full explanation of the differences!

 

R68's are numbered 2500-2924, and built by Westinghouse Amrail with the latter part in a combination which included Alstrom! All are in 4 car sets except 2916-2924 which are singles for the Franklin Ave. Shuttle. The Rollsigns behind the screens are flush to the glass, and also the interior, it buldges out. The keyhole is inside a round silver ring for the rollsign. The floors are now black specked to once was the standard beige. The interior is deeper in its shine on its stainless steel. Also note the interior number board placement to which is to the right of the Emergency Brake decal at the cab ends. Also the T/O's cab at the full length end the door swings open to the inside of it. Note on the 4 car sets, the controls are at the full-cab ends on the even numbered cars and are arranged for example 2500-1-2-3, 2504-5-6-7, 2508-9-10-11, 2512-3-4-5, 2516-7-8-9. Then it goes up in the sequence right up to 2915. In the singles, all cars 2916-2924 have controls in both ends (full, and half width cabs). Also on the single Franklin Ave. Shuttle cars, the side rollsign boxes were removed in favor of decaled rollsigns in its place. Another thing is also the rollsigns were removed in each non-operating cab. This conversion took place in 2000. Also outside, the side rollsign has a silver strip between that, and the window underneath. End rollsigns are mostly lower flush in the front except R68's from 2780-2924 to which have a higher rollsign with a slot underneath for what I guess was gonna be a slot for an extra screen that never materialized that the R110's in both series had (time interval screen display board). Number boards are all in the same general locations where they are behind the first sets of doors on each end, and windows. MTA logo is between the cab window and first set of doors on both sides on the right fronts.

 

R68A's are numbered 5101-5200, and built by Kawasaki. All are in 4 car sets now to which was done in 1997-98. All came as singles! Most with the exception of a few have the black speckled flooring. Rollsigns are flush with the wall inside, and the rollsign inside of it is recessed. Also the key hole for it has no ring around it. Cab doors slide, and interior number board placement is above the Emergency Brake sticker at the ends. Also as mentioned on a previous statement, the end rollsigns are all high with no slots underneath, and no red door sticker at the end doors. The interior walls are duller than the R68's built by Westinghouse Amrail. Outside side rollsigns are inside a solid plate of glass rather than in a frame that the R68's have. Also outside numberboard placement is even spaced where the MTA logo is behind the cab, and numberboard with flag behind the first set of doors on one end, and at the other end between the rear door set, and cab window is the numberboard. All R68A's are linked together as follows for example 5001-2-3-4, 5005-6-7-8, 5009-10-11-2, 5013-4-5-6, 5017-8-9-20. Note that p the even cars at the full-length end are the control cars of each end of that particular set.

 

Both sets can be interlinked, but rarely done because like intermixing the Alstroms, and Siemans in the R160's, and R142's, and R142A's, braking is a compatibility issue.

 

I just couldn't find any thank button under there. I'm also not a frequent 68/A rider

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Also operationally, their brakes are VERY different. The R68A has an e-cam device controlling the brakes so there is a delay when a T/O moves the brake handle to when the train actually starts to slow down. Once the brakes start applying a T/O can adjust the range of the braking but he can't go back to release (and then try to apply brakes again after to stop the train) otherwise he will have to deal with the delay again and probably overshoot the station.

 

The R68 brakes are much more responsive and similar to other SMEE brakes

Wait, I though both the R68 and R68A had Adtranz E-Cam Propulsion.

 

In terms of brakes, R68s use the NYAB Air Brake System and the R68As use the WABCO Air Brake System.

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Wait, I though both the R68 and R68A had Adtranz E-Cam Propulsion.

 

In terms of brakes, R68s use the NYAB Air Brake System and the R68As use the WABCO Air Brake System.

 

The R68A brake system delays before application when the brake handle is moved to a service position. R68's do not. Ask any B Division qualified T/O and they will tell you

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Also, I don't know if it is me, but the R68A sounds a bit like an R40 when it is moving.

 

If you meant acceleration, then that's quite strange. To me, the R68A sounds more like an R42 b/c of the Westinghouse motors. Unlike other trains using a Westinghouse/Adtranz Propulsion, it doesn't make that whirl (except 5076) as on cars with broken motors.

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Other differences that the R68 and R68A have are two slight difference in both cars exterior shells. The R68 has streamlines that are not surrounded by borders on the exterior shell while the R68A does. Also the R68As sides taper off when it meets the bottom half of the ends while the R68 makes full contact with the bottom half of the nose without tapering off.

 

Look at these photos carefully to see the differences:

 

img_81076.jpg

 

img_31763.jpg

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