DanTheTransitMan Posted September 8, 2013 Share #1 Posted September 8, 2013 Anyone know why the Nova LFS-As make a chirping/whistling noise when coming to a stop? Link to comment Share on other sites More sharing options...
XcelsiorBoii4888 Posted September 8, 2013 Share #2 Posted September 8, 2013 idk... but the Xcelsiors make that chirping noise when turning Link to comment Share on other sites More sharing options...
Fresh Pond Posted September 8, 2013 Share #3 Posted September 8, 2013 Anyone know why the Nova LFS-As make a chirping/whistling noise when coming to a stop? If its the sound i think you're talking about, that's just the retarder doing its job Link to comment Share on other sites More sharing options...
4P3607 Posted September 8, 2013 Share #4 Posted September 8, 2013 There was a person on Youtube who had a video of that, but they deleted it. It's that screeching sound, I always heard it on the new C40LFs. (One just did it as I was typing this) Link to comment Share on other sites More sharing options...
XcelsiorBoii4888 Posted September 8, 2013 Share #5 Posted September 8, 2013 There was a person on Youtube who had a video of that, but they deleted it. It's that screeching sound, I always heard it on the new C40LFs. (One just did it as I was typing this) I have a whole lot of onboard videos of those buses doing that Link to comment Share on other sites More sharing options...
Fresh Pond Posted September 8, 2013 Share #6 Posted September 8, 2013 There was a person on Youtube who had a video of that, but they deleted it. It's that screeching sound, I always heard it on the new C40LFs. (One just did it as I was typing this) There's one on my channel...can't past it now since I'm not home Link to comment Share on other sites More sharing options...
SevenEleven Posted September 9, 2013 Share #7 Posted September 9, 2013 Could be the door alarm you're hearing. Link to comment Share on other sites More sharing options...
DanTheTransitMan Posted September 9, 2013 Author Share #8 Posted September 9, 2013 There was a person on Youtube who had a video of that, but they deleted it. It's that screeching sound, I always heard it on the new C40LFs. (One just did it as I was typing this) I know what you're talking about, but that's not it. This noise sounds like the bus whistling. Could be the door alarm you're hearing. I don't think that's it. I hear this sound when the bus is coming into the stop- not when the doors are opening. Link to comment Share on other sites More sharing options...
Cait Sith Posted September 9, 2013 Share #9 Posted September 9, 2013 I know what you're talking about, but that's not it. This noise sounds like the bus whistling. I don't think that's it. I hear this sound when the bus is coming into the stop- not when the doors are opening. That would be the door alarm. Sometimes they make that noise when the buses pulls into the stop. It's like the Orion VIIs when they make the beeping sounds before the bus would pull into the stop. Link to comment Share on other sites More sharing options...
DanTheTransitMan Posted September 9, 2013 Author Share #10 Posted September 9, 2013 Well damn, I didn't know that, thanks! Link to comment Share on other sites More sharing options...
XcelsiorBoii4888 Posted September 9, 2013 Share #11 Posted September 9, 2013 No... it's not the damn door alarm... the door alarm is a beep... beep beep... the does chirping make a beeping sound? no.... it's a whistling sound. I know because the Xcelsiors always make that noise Link to comment Share on other sites More sharing options...
BrooklynIRT Posted September 9, 2013 Share #12 Posted September 9, 2013 delete Link to comment Share on other sites More sharing options...
MHV9218 Posted September 9, 2013 Share #13 Posted September 9, 2013 Probably the blow-off valve for the turbocharger. Very prominent BOV on the 1200s, less prominent on the 5800s and that series. The door alarm is a different noice. Link to comment Share on other sites More sharing options...
SevenEleven Posted September 9, 2013 Share #14 Posted September 9, 2013 No... it's not the damn door alarm... the door alarm is a beep... beep beep... the does chirping make a beeping sound? no.... it's a whistling sound. I know because the Xcelsiors always make that noise No, the door alarm on the Novas was a wailing siren that got modified to a chrip-like sound... Link to comment Share on other sites More sharing options...
Fresh Pond Posted September 9, 2013 Share #15 Posted September 9, 2013 There was a person on Youtube who had a video of that, but they deleted it. It's that screeching sound, I always heard it on the new C40LFs. (One just did it as I was typing this) There's one on my channel...can't past it now since I'm not home You're referring to this... ...I still don't know what causes that screeching Link to comment Share on other sites More sharing options...
Around the Horn Posted September 11, 2013 Share #16 Posted September 11, 2013 You're referring to this... ...I still don't know what causes that screeching D?Unlike SEPTA non of our routes just have a letter... Link to comment Share on other sites More sharing options...
Fresh Pond Posted September 11, 2013 Share #17 Posted September 11, 2013 D?Unlike SEPTA non of our routes just have a letter... It was a shuttle Link to comment Share on other sites More sharing options...
SevenEleven Posted September 11, 2013 Share #18 Posted September 11, 2013 So I've taken a listen of some of my soundclips and found the sound that Dan is referring to : Link to comment Share on other sites More sharing options...
XcelsiorBoii4888 Posted September 11, 2013 Share #19 Posted September 11, 2013 This is what I was referring to, you hear it when the bus turns and sometimes when taking off... Link to comment Share on other sites More sharing options...
Fresh Pond Posted September 12, 2013 Share #20 Posted September 12, 2013 This is what I was referring to, you hear it when the bus turns and sometimes when taking off... Then its the turn signal Link to comment Share on other sites More sharing options...
XcelsiorBoii4888 Posted September 12, 2013 Share #21 Posted September 12, 2013 Then its the turn signal Thats a very ignorant answer..maybe you should watch the video... Since when does the turn signal make a whistling sound? Or chirping sound? Link to comment Share on other sites More sharing options...
Cait Sith Posted September 12, 2013 Share #22 Posted September 12, 2013 Thats a very ignorant answer..maybe you should watch the video... Since when does the turn signal make a whistling sound? Or chirping sound? Actually, the Xcelsior turn signals do make a sound. I've heard it before. But the sound you are speaking of is not close to what 711 and Dan are referring to, that sound is not on any Nova. So I've taken a listen of some of my soundclips and found the sound that Dan is referring to : 2:27 on that 1205 clip, you can hear it. Link to comment Share on other sites More sharing options...
Fresh Pond Posted September 12, 2013 Share #23 Posted September 12, 2013 I think everyone is talking abut different sounds here lol Link to comment Share on other sites More sharing options...
Metro4050 Posted September 12, 2013 Share #24 Posted September 12, 2013 Well since we're already discussing bus sounds I have a dew question some of the older members might be able to answer.... -What made the GMC RTS buses ROAR. Not all of them did it. But some had a seat vibrating, window shaking roar which would climax about the time the bus hit 3rd (or 4th?) gear. Then it would pick up in earnest at about 50mph. VERY LOUD sometimes. -Grumman 870s, Flxible As and to a lesser extent GMC RTS used to make this sneezing sound at times when air was released. It made the sound a backpack or jacket makes when you zip it up real fast. It's very loud and can make you jump if you're not expecting it. There was a quieter vvrrrwhooosh version you'd hear on the RTS as well. What was the cause of this. -A number of Metro As, some RTS and even one D40LF made this frying bacon sound when in motion from the exhaust. The Metros and RTS that did it had a deep throaty idle like an Eagle 10. And when they took off it was very bass heavy and would make a loud frying sound you could hear for blocks down the street. -Older D40LFs, mid to late 90s usually, made this odd noise upon acceleration where there was a strange and sometimes EXTREMELY LOUD metal on metal noise which would crescendo each time the bus changed gears before ending with a pff-shff. Sometimes the bus would hiss instead of scream and it would end in the same pff-shff noise. -I hear MAN planetarys are the best sounding axles out there. Now, on topic. There are a few different type of whistles and chirps. The CNG whistle and um, "backfire," The 6v92TA turbo whine, and a definite whistle a rare number of D40LFs make when taking off and stopping. It sounds like an actual whistle. There's also various whines moans and groans. The screeching sound sometimes akin to car brakes is from water in the fan belts I believe. Link to comment Share on other sites More sharing options...
SevenEleven Posted September 12, 2013 Share #25 Posted September 12, 2013 2:27 on that 1205 clip, you can hear it. Now, that's the door alarm. Link to comment Share on other sites More sharing options...
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