Reply
 
Thread Tools Display Modes
 
Old 04-29-2016, 07:37 PM   #51
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 7,939
Year: 1991
Coachwork: Carpenter
Chassis: International S3800
Engine: DT360
Rated Cap: 7 Row Handicap
Quote:
Originally Posted by Jolly Roger View Post
Air brakes lock the entire system up and the driver has no choice but to stop.
Liquid system's wait until you don't have any brakes and can't stop!
at least with air you have a gauge and a Buzzer so USUALLY you have some time to get shut down before your rear wheels just lock up...

though you CAN have a catastrophic failure on one of the rear spring cylinders.. im sure we have all seen the semi truck going down the road with one set of tandems locked solid and smoke everywhere..

-Christopher
cadillackid is online now   Reply With Quote
Old 04-29-2016, 07:55 PM   #52
Bus Geek
 
Robin97396's Avatar
 
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 4,891
Year: 1997
Coachwork: Bluebird
Chassis: TC 1000
Engine: 5.9
Send a message via Yahoo to Robin97396
I made this heavy girl slide a number of times when I first drove it home before I got used to braking from the top of the pedal to more accurately control the pressure. Contrary to popular belief the front end didn't nose dive into the pavement.
Robin97396 is online now   Reply With Quote
Old 04-29-2016, 08:58 PM   #53
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 7,939
Year: 1991
Coachwork: Carpenter
Chassis: International S3800
Engine: DT360
Rated Cap: 7 Row Handicap
Quote:
Originally Posted by Robin97396 View Post
I made this heavy girl slide a number of times when I first drove it home before I got used to braking from the top of the pedal to more accurately control the pressure. Contrary to popular belief the front end didn't nose dive into the pavement.
first time I ever drove a bus forever ago.. I got out on a city street going about 35 or 40... a traffic light turned yellow... and as an 18 year old kid I just assumed that a School bus was going to be hard to stop so I MASHED the pedal and had smoke rollin off the tires... I learned real quick an empty school bus with air brakes could stop pretty good... it was a Brand new bus with maybe 200 miles on it... the brakes were broken in after that

-Christopher
cadillackid is online now   Reply With Quote
Old 04-29-2016, 09:52 PM   #54
Bus Geek
 
Robin97396's Avatar
 
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 4,891
Year: 1997
Coachwork: Bluebird
Chassis: TC 1000
Engine: 5.9
Send a message via Yahoo to Robin97396
All my other buses were hydraulic. I still like that simplicity.
Robin97396 is online now   Reply With Quote
Old 04-29-2016, 10:46 PM   #55
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 7,939
Year: 1991
Coachwork: Carpenter
Chassis: International S3800
Engine: DT360
Rated Cap: 7 Row Handicap
Quote:
Originally Posted by Robin97396 View Post
All my other buses were hydraulic. I still like that simplicity.
the complexity is similar... with a diesel you make no vacuum for the power brake.. so there is a little pump to pump up the booster for the hydraulic power assist.. you have an air compressor on an air brake bus..

on hydraulic brakes the parking brake is still separate so just like air brakes you have a parking brake assembly and linkage.

sometimes on hydraulic brakes your transmission has a "parking pawl" and a 'P' on the shifter lever.. whereas air brake busses never do..

hydraulic brakes have fluid to leak and have to be replaced and bled.. air brakes just have air lines.. very slow leaks are acceptable and dont require replacing fuid...

-Christopher
cadillackid is online now   Reply With Quote
Old 04-29-2016, 11:20 PM   #56
Bus Geek
 
Robin97396's Avatar
 
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 4,891
Year: 1997
Coachwork: Bluebird
Chassis: TC 1000
Engine: 5.9
Send a message via Yahoo to Robin97396
Good point. I'll be safer with air brakes when I stop sliding the bus. It does get funny looks. You know how some kid will try to dart in front of you while driving. It's easy to lock up these air brakes, and the bus stops great. The stuff inside... not so much. So I've learned to put the arch of my foot on the top of the air brake pedal and it's much easier to control the pressure. I didn't even slide once last time I went to town (says the guy with flat spots on his tires).
Robin97396 is online now   Reply With Quote
Old 04-30-2016, 09:16 AM   #57
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 7,939
Year: 1991
Coachwork: Carpenter
Chassis: International S3800
Engine: DT360
Rated Cap: 7 Row Handicap
Quote:
Originally Posted by Robin97396 View Post
Good point. I'll be safer with air brakes when I stop sliding the bus. It does get funny looks. You know how some kid will try to dart in front of you while driving. It's easy to lock up these air brakes, and the bus stops great. The stuff inside... not so much. So I've learned to put the arch of my foot on the top of the air brake pedal and it's much easier to control the pressure. I didn't even slide once last time I went to town (says the guy with flat spots on his tires).
I think its also human nature.. psychological to think "im driving a bus im going to need to press REAL HARD on the break to stop this big monster"..

after-all you almost always Mash the accelerator when you take off.. esp to get on the highway.. the brain says the same about the brakes..

-Christopher
cadillackid is online now   Reply With Quote
Old 04-30-2016, 12:10 PM   #58
Bus Geek
 
Robin97396's Avatar
 
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 4,891
Year: 1997
Coachwork: Bluebird
Chassis: TC 1000
Engine: 5.9
Send a message via Yahoo to Robin97396
Definitely true when someone surprises you. My incident was in a small town at very low speeds, and it looked to me as if the kid was attempting to see what would happen. I was happily driving along after filling up in town and now on my way home when this girl runs toward the front of the bus. She couldn't make it with her timing and apparently she came to the same conclusion too, or she never intended to run in front of the bus in the first place. This was an otherwise open street with no reason for anyone to interfere with traffic, and another child stayed on the sidewalk and watched. Sure glad I didn't pull anything like that when I was a kid.
Well, once when I was a kid I rolled this big rock onto the road to make it hit a car bumper. Bingo, right on the bumper too and that rock sailed out of site. I ran through the neighbors yard, because previously I had failed to notice the number of people in the car I had assaulted. They did go to the neighbors and complain, but they didn't think it was me. My secret is out.
Robin97396 is online now   Reply With Quote
Old 04-30-2016, 12:26 PM   #59
Skoolie
 
rjnye79's Avatar
 
Join Date: Feb 2016
Location: GA, by way of NC and VA
Posts: 140
Year: 1995
Coachwork: Bluebird
Chassis: International 3800
Engine: T444e
Rated Cap: 66
Great info y'all, thanks! Sounds a bit intimidating, but I suppose it's just a matter of practice.

Should I beware of used buses with a lot of hours on the engine? If so, how much is "a lot"?
rjnye79 is offline   Reply With Quote
Old 05-02-2016, 11:46 AM   #60
Skoolie
 
rjnye79's Avatar
 
Join Date: Feb 2016
Location: GA, by way of NC and VA
Posts: 140
Year: 1995
Coachwork: Bluebird
Chassis: International 3800
Engine: T444e
Rated Cap: 66


Does this look manageable? Still trying to figure out what an acceptable amount of rust should look like...
rjnye79 is offline   Reply With Quote
Reply

Tags
1993, allison 545, amtran, international, shopping

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Virginia Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 07:01 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.