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Old 11-01-2017, 09:17 PM   #1
Bus Nut
 
Join Date: Mar 2011
Location: Port angeles, Wa
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Year: 90
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Chassis: international
Engine: dt466
Rated Cap: 72
Whats your axle ratio

Just wondering, With 11r/22.5 tires, what ratio is your rear end and how does it do at hiway speeds? I have 4.78 gears and are considering a change for better hiway speed. What do you have and what rpm are you at 60 mph?
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Old 11-01-2017, 09:52 PM   #2
Skoolie
 
Join Date: Feb 2016
Location: Indianapolis, IN
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Year: 1999
Coachwork: AmTran
Chassis: International FE
Engine: DT466E
Rated Cap: 84 passengers
My bus has a MD3060 transmission in it, 5th gear is overdriven at 0.75:1. My rear axle gear ratio is 5.38:1 I believe. I want to say at 60 mph my bus is running around 1800 rpms.
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Old 11-01-2017, 10:40 PM   #3
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Location: Gonvick MN
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Year: 1975
Chassis: Gillig
Engine: Cat 3208t/10 speed transmission
I have 5.29 rears
11/24.5 tires
And .78 overdrive
2000 rpm gets me about 63 mph
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Old 11-01-2017, 11:20 PM   #4
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Coachwork: bluebird conventional
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Engine: dt466
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Forgot to mention, my trans is 1-1 in hi gear.
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Old 11-02-2017, 12:10 AM   #5
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Join Date: Sep 2015
Location: Kalispell, MT
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Year: 1993
Coachwork: Amtran Genesis
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Engine: DT466
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11r22.5 tires...4.78 rear gears...1:1 final drive on transmission...
60 mph is 2370 rpm

Would really like some 4.11 rear gears for 70 mph at the same rpm or 60 mph at 2025 rpm
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Old 11-02-2017, 01:42 AM   #6
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Join Date: May 2016
Location: Georgia
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Year: 2001
Coachwork: Blue Bird
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Engine: T444E
Rated Cap: 14
I currently have 5.38 gears, 1:1 high gear transmission (it's a 5-speed manual), 10R22.5 tires, 55 MPH top speed at ~2500 RPM on a T444 engine.

A swap to 4:11 (or faster gears) is planned. The speed may be electronically limited in addition to the RPM governor. If so, it will be removed when the computer is reprogrammed for the new gears.
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Old 11-02-2017, 11:19 AM   #7
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Join Date: Jan 2017
Location: Kansas
Posts: 13
Year: 1995
Coachwork: Wayne
Chassis: International
Engine: T444e
11r 22.5 tires. Allison at545 transmission. T444e. Rear end is 4.44 gears. Governor has been killed by Intl dealer. Will run down the highway at 70mph if I let it.

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Old 11-05-2017, 10:40 PM   #8
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Join Date: Jul 2015
Location: Montana/Texas
Posts: 500
Year: 1998
Coachwork: Crown by Carpenter
Chassis: International 3800
Engine: DT 466e/MT 643!
Rated Cap: 16
DT466E AT545 tranny. 295/75 R22.5 tires. 70MPH @ 2600RPM. Prefer to cruise around 60-65

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Old 11-05-2017, 10:41 PM   #9
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Join Date: Jul 2015
Location: Montana/Texas
Posts: 500
Year: 1998
Coachwork: Crown by Carpenter
Chassis: International 3800
Engine: DT 466e/MT 643!
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Quote:
Originally Posted by johnbloem1974 View Post
DT466E AT545 tranny. 295/75 R22.5 tires. 70MPH @ 2600RPM. Prefer to cruise around 60-65

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Oh, and rear is 3.98

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Old 11-05-2017, 10:42 PM   #10
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Join Date: Jul 2015
Location: Montana/Texas
Posts: 500
Year: 1998
Coachwork: Crown by Carpenter
Chassis: International 3800
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Quote:
Originally Posted by johnbloem1974 View Post
Oh, and rear is 3.98

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Would love to have a 2000 or MD3060....

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