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04-03-2015, 06:01 PM
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#141
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Bus Geek
Join Date: Mar 2011
Location: Houston, Texas
Posts: 8,462
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
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Nat is absolutely right --- Unless you plan on building a dragster or a sled pulling rig, keep your rpm's as close to the engines peak torque rating as possible for longevity and mpg's. Playing with the governor will get you more rpm's...but at a very high price. Mind boggling power & torque can be wrung out of these engines when tweaked but the legendary reliability & mileage of diesels goes away rapidly when they are pushed beyond their design limits. Especially when it comes to rpm's.
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04-03-2015, 06:07 PM
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#142
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Bus Nut
Join Date: Dec 2014
Posts: 447
Year: 1988
Coachwork: Ward
Chassis: International
Engine: Navistar 5.9 Diesel
Rated Cap: A butt-load...
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Oh for sure guys! I'm not planning in building a spaceship LOL. But the bus is topping at 55mpg screaming.....don't recall the rpms....lowering that (rpms) would also lower noise levels at cruise speed, don't you think?
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04-03-2015, 06:12 PM
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#143
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Bus Geek
Join Date: Aug 2011
Location: Stony Plain Alberta Canada
Posts: 2,937
Year: 1992
Coachwork: Bluebird
Chassis: TC2000 FE
Engine: 190hp 5.9 Cummins
Rated Cap: 72
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Yes it would.
Nat
__________________
"Don't argue with stupid people. They will just drag you down to their level, and beat you up with experience."
Patently waiting for the apocalypses to level the playing field in this physiological game of life commonly known as Civilization
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04-03-2015, 11:51 PM
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#144
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Bus Geek
Join Date: Mar 2011
Location: Houston, Texas
Posts: 8,462
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
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You really do need to know what rpm's you are pulling. Without that information, everything else has little meaning or value as far as gearing. A couple of hundred rpm can make a very big difference in mpg and overall reliability.
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04-04-2015, 01:37 AM
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#145
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Bus Nut
Join Date: Dec 2014
Posts: 447
Year: 1988
Coachwork: Ward
Chassis: International
Engine: Navistar 5.9 Diesel
Rated Cap: A butt-load...
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Quote:
Originally Posted by Tango
Hey n00b --- actually there are several ways to pick up more top end speed. More often than not, a combination gets the best results. Below are the three most common variables you have to play with.
Rear end (Ring & Pinion Ratio) - Taller gears will make you go faster at any given engine RPM...but only if the engine has enough torque to pull those gears. Typically a small change in axle ratio will yield a small improvement that most engines can handle.
Transmission Final Gear Ratio - This can be modified by going with a different tranny that has higher gearing, finding one with one or more levels of Overdrive, or by adding an auxiliary trans that multiplies what you already have (sometimes called a Brownie Box). As far as I know Brownies only work with standard trans.
Tire Diameter - Often overlooked and actually one of the cheapest fixes there is. Increasing the diameter can have a significant effect.
Example: RPM and Gearing being the same (2240 RPM x 1:1 ratio)...going two inches larger on the tires will take a vehicle from 65mph to about 69 mph.
But...before you get too deeply committed to any solution...play with the numbers on a good calculator. Lots of "what ifs" can be tested out before you spend a dime. I have used the link below with good results, especially the "Manual Entry" calc at the bottom of the page.
Engine RPM Calculator
Good luck with it pardner and let us know what you decide.
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This is such useful info. Thank you!
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04-18-2015, 11:57 PM
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#146
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Bus Nut
Join Date: Dec 2014
Posts: 447
Year: 1988
Coachwork: Ward
Chassis: International
Engine: Navistar 5.9 Diesel
Rated Cap: A butt-load...
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Picture time!
All lights are removed
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04-19-2015, 12:00 AM
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#147
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Bus Nut
Join Date: Dec 2014
Posts: 447
Year: 1988
Coachwork: Ward
Chassis: International
Engine: Navistar 5.9 Diesel
Rated Cap: A butt-load...
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I can reuse most of them, and swap all reds in back, and amber in front, but I think I'll get new ones (or decent used) for some of them....too rusty
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04-19-2015, 12:01 AM
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#148
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Bus Nut
Join Date: Dec 2014
Posts: 447
Year: 1988
Coachwork: Ward
Chassis: International
Engine: Navistar 5.9 Diesel
Rated Cap: A butt-load...
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Disclaimer: If you guys see pics twice, sorry....tapatalk it's being wonky
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04-19-2015, 12:02 AM
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#149
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Bus Nut
Join Date: Dec 2014
Posts: 447
Year: 1988
Coachwork: Ward
Chassis: International
Engine: Navistar 5.9 Diesel
Rated Cap: A butt-load...
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Started (finally!!!!) prepping the outside: the nose is as smooth as a baby's butt!
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04-19-2015, 12:04 AM
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#150
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Bus Nut
Join Date: Dec 2014
Posts: 447
Year: 1988
Coachwork: Ward
Chassis: International
Engine: Navistar 5.9 Diesel
Rated Cap: A butt-load...
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I also moved the bus today so the tires could move 1/4 turn to avoid getting them square lol
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04-19-2015, 06:11 AM
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#151
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Bus Geek
Join Date: Nov 2011
Location: MNT CITY TN
Posts: 5,158
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Quote:
Originally Posted by skoolie_n00bie
Disclaimer: If you guys see pics twice, sorry....tapatalk it's being wonky
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Don't blame wonky on tapatalk .......wonky is a state......that you drove to....when you woke up and said..."self, I need...NO..... I want a bus".... ;)
When you laying down paint?
__________________
Our build La Tortuga
Accept the challenges so that you can feel the exhilaration of victory.
George S. Patton
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04-19-2015, 09:22 AM
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#152
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Bus Nut
Join Date: Dec 2014
Posts: 447
Year: 1988
Coachwork: Ward
Chassis: International
Engine: Navistar 5.9 Diesel
Rated Cap: A butt-load...
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Quote:
Originally Posted by bansil
Don't blame wonky on tapatalk .......wonky is a state......that you drove to....when you woke up and said..."self, I need...NO..... I want a bus".... ;)
When you laying down paint?
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Might have been also me trying to post but barely seeing keys from my eyes not wanting to stay open....[emoji16]
I'll sand and prep the whole thing, then prime it.
Anyone ever tried a wrap on their bus?
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04-19-2015, 09:28 AM
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#153
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Bus Geek
Join Date: Aug 2011
Location: Stony Plain Alberta Canada
Posts: 2,937
Year: 1992
Coachwork: Bluebird
Chassis: TC2000 FE
Engine: 190hp 5.9 Cummins
Rated Cap: 72
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Quote:
Originally Posted by skoolie_n00bie
Might have been also me trying to post but barely seeing keys from my eyes not wanting to stay open....[emoji16]
I'll sand and prep the whole thing, then prime it.
Anyone ever tried a wrap on their bus?
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I looked into the wrap's, but was disappointed to find they only last 5 years max.
Then there is the cost.
How about plasti dip?
Nat
__________________
"Don't argue with stupid people. They will just drag you down to their level, and beat you up with experience."
Patently waiting for the apocalypses to level the playing field in this physiological game of life commonly known as Civilization
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04-19-2015, 09:53 AM
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#154
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Bus Geek
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 23,764
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
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I have a neighbor who is obsessed with plasti dip. I wouldn't do a bus in it.
Its impossible to tape off very well and it rips easily. The sun fades it quickly and it ends up looking like a high schooler went to town on it with krylon.
Its ok stuff for blacking our the plastic chrome on cars and stuff, but when I see the neighbor's plasti dipped 2015 buick I wanna puke. It peels super easy. It aslo leaches into paint sometimes. His 2013 Jetta was white from the factory. They "dipped" it pink and now the color is etched into the finish. Looks atrocious.
Vinyl wrap would hold up a heck of a lot better but 5 years isn't terribly long either.
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04-19-2015, 10:00 AM
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#155
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Skoolie
Join Date: Feb 2015
Location: Miami
Posts: 172
Year: 1998
Coachwork: Thomas
Chassis: MVP
Engine: CAT 3116
Rated Cap: 84
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and Plasti Dip is not all that cheap.
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04-19-2015, 10:09 AM
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#156
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Bus Geek
Join Date: Aug 2011
Location: Stony Plain Alberta Canada
Posts: 2,937
Year: 1992
Coachwork: Bluebird
Chassis: TC2000 FE
Engine: 190hp 5.9 Cummins
Rated Cap: 72
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When my bus is done, I'm going to get the entire exterior coated with Pollyurea.
Comes in any color, UV stable, and unreal tough.
Nat
__________________
"Don't argue with stupid people. They will just drag you down to their level, and beat you up with experience."
Patently waiting for the apocalypses to level the playing field in this physiological game of life commonly known as Civilization
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04-19-2015, 10:21 AM
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#157
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Bus Geek
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 23,764
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
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Very cool idea nat.
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04-19-2015, 11:10 AM
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#158
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Moderator
Join Date: Feb 2007
Location: NUNYA
Posts: 4,236
Year: 1995
Coachwork: Thomas
Chassis: 3800
Engine: DT408, AT545
Rated Cap: 23 500 gvw
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Nice bus. Have you measured the bus from bumper to bumper?
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04-19-2015, 09:40 PM
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#159
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Bus Nut
Join Date: Dec 2014
Posts: 447
Year: 1988
Coachwork: Ward
Chassis: International
Engine: Navistar 5.9 Diesel
Rated Cap: A butt-load...
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Quote:
Originally Posted by crazycal
Nice bus. Have you measured the bus from bumper to bumper?
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If I remember correctly, 18'
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04-20-2015, 05:06 PM
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#160
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Mini-Skoolie
Join Date: Jan 2015
Location: Minnesota
Posts: 23
Year: 2000
Coachwork: Thomas
Chassis: E350
Engine: Ford 7.3 Powerstroke
Rated Cap: 16
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New question of the day, how do you hook up a diesel tachometer, on a car it has a hot wire, a ground and a green wire to the distributer. I am not sure a diesel has a distributer. Second question of the day, what is the peak torque rpm of a 7.3 turbo ford engine. BTW, although I am a drag racer, and love high output, I do not intend to persue greater power with my bus, I would be interested in mileage and trouble free service.
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