BusTalk

NEW YORK OMNIBUS 2629 · Posted: Mon Apr 15, 2019 7:39 pm Post subject: Peculiar GM New Look noise

All:

I have no idea if this same sound was heard on the GM New Looks rostered by the NYCTA/MTA, but I do clearly remember the sound on NJ GM's, even though the last time I heard it was many years ago.

This sound was heard (this was especially noticeable if you were sitting towards the rear of the bus) when the bus was stopped at a light or making a stop.

The only way I can even try to describe this sound would be to say it sounded like a "harmonic wheeze", that came in "series" until the bus began moving again.

Any clues?

Thanks.....

"NYO"

frankie · Posted: Thu Apr 18, 2019 10:59 am Post subject:

Wouldn't that depend on whether it was a 6V-71 or an 8V-71?

NEW YORK OMNIBUS 2629 · Posted: Thu Apr 18, 2019 2:33 pm Post subject:

Q65A · Posted: Fri Apr 19, 2019 8:25 am Post subject:

A lot of the QTC Fishbowls on which I had rode in the 60's tended to idle very roughly when waiting at a light or at a bus stop.

NEW YORK OMNIBUS 2629 · Posted: Fri Apr 19, 2019 11:16 am Post subject:

traildriver · Joined: 26 Mar 2011 Posts: 2458 Location: South Florida

NYO--it is very difficult trying to imagine the sound from your description...
I wonder if the sound you are describing could be coming from the air compressor or some other pneumatic source? Perhaps the air suspension leveling valves?

NEW YORK OMNIBUS 2629 · Posted: Sat Apr 20, 2019 4:08 pm Post subject:

MaBSTOA 15 · Age: 70 Joined: 27 Feb 2013 Posts: 1058

I vividly remember that the GM TDH-5301s that Triboro Coach and Green Bus Lines had made a jet like whining noise as they travel down the street. These buses did not have a/c. Who knows what the whining noise was...

BTW, did your buses with the weird noise, did they have air conditioning? It could have been the a/c compressor

NEW YORK OMNIBUS 2629 · Posted: Mon Apr 22, 2019 3:46 pm Post subject:

MaBSTOA 15:

I THINK (bit am not sure) that at least SOME of these New Looks MIGHT have been a/c equipped.

However, that would further complicate the issue, as I would hear this same noise during the winter months.

In really trying to jog my memory, I most recall the sound on ex-NHBL New Look transits, as well as the "semi suburban" (front door only, a/c equipped) New Looks that were originally operated by ORANGE & BLACK.

I am now going back now well over 30 years with these recollections......

"NYO"