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Old 04-23-2021, 04:35 PM   #1
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Join Date: Jan 2021
Location: On the road
Posts: 286
Year: 2013
Chassis: IC RE
Engine: HT570 / 3500SP
Rated Cap: 4
Mexico. Cheers!

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Old 04-23-2021, 04:58 PM   #2
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Join Date: Nov 2014
Location: NM USA KD6WJG
Posts: 713
Year: 1991
Coachwork: Bluebird
Chassis: All American RE 40 FEET
Engine: Cummins 8.3
You made it! Cool. How did the bus run?
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Old 04-23-2021, 05:07 PM   #3
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Year: 2013
Chassis: IC RE
Engine: HT570 / 3500SP
Rated Cap: 4
Ran amazingly. Plenty of power, 9mpg on a new engine, not too bad.
Only issue is I feel like the transmission allows the engine to go to low in rpm, sometimes if I don't floor it (I like to stay around 80% load climbing a hill) it waits to reach around 1000rpm to shift.
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Old 04-23-2021, 05:19 PM   #4
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Year: 2013
Chassis: IC RE
Engine: HT570 / 3500SP
Rated Cap: 4
But I love the wide ratio of the transmission.
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Old 04-23-2021, 05:35 PM   #5
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Join Date: Nov 2014
Location: NM USA KD6WJG
Posts: 713
Year: 1991
Coachwork: Bluebird
Chassis: All American RE 40 FEET
Engine: Cummins 8.3
You can just push a button and change it. I have to pull a darned lever.
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Old 04-23-2021, 06:16 PM   #6
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Chassis: IC RE
Engine: HT570 / 3500SP
Rated Cap: 4
Right. But still, I expect it to be reasonable and act as an automatic gearbox.
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Old 04-23-2021, 06:18 PM   #7
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Join Date: Nov 2014
Location: NM USA KD6WJG
Posts: 713
Year: 1991
Coachwork: Bluebird
Chassis: All American RE 40 FEET
Engine: Cummins 8.3
Where is peak torque on that engine?
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Old 04-23-2021, 06:36 PM   #8
Bus Nut
 
Join Date: Jan 2021
Location: On the road
Posts: 286
Year: 2013
Chassis: IC RE
Engine: HT570 / 3500SP
Rated Cap: 4
1250 lb-ft @2000 rpm. I didn't find the curve.
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Old 04-23-2021, 08:07 PM   #9
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Location: NM USA KD6WJG
Posts: 713
Year: 1991
Coachwork: Bluebird
Chassis: All American RE 40 FEET
Engine: Cummins 8.3
That seems way high. But who knows.
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Old 04-23-2021, 08:36 PM   #10
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Join Date: Jan 2021
Location: On the road
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Year: 2013
Chassis: IC RE
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Rated Cap: 4
I'd like to find the torque curve. The 450hp version from an RV has an almost flat torque curve from 1250 rpm.
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Old 04-23-2021, 08:52 PM   #11
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Join Date: Nov 2014
Location: NM USA KD6WJG
Posts: 713
Year: 1991
Coachwork: Bluebird
Chassis: All American RE 40 FEET
Engine: Cummins 8.3
I like driving a diesel with a flat torque curve but, that went out of style in the late 70's thanks to the maxidyne from mack.
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Old 04-28-2021, 08:56 PM   #12
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Rated Cap: 4
Quote:
Originally Posted by s2mikon View Post
Where is peak torque on that engine?
Correction, it is 1250 lb-ft at 1200 rpm (not 2000).
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