Reply
 
Thread Tools Display Modes
 
Old 09-17-2019, 04:53 PM   #1
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 2,194
Year: 1975
Coachwork: Chevy
Chassis: 8 window
Engine: 454 LS7
Rated Cap: 24,500
2 speed rear end possibilities

I'm looking at a bus conversion that has a 2 speed rear end - I'm somewhat familiar with the split as I had a 56 Mercury 2 1/2 ton at one time that was equipped with the 2 speed rear end - my question today, would it be possible to replace the gears in the 2 speed so they become the faster highway gears?, or is it possible to replace the regular gears with something a bit more highway friendly than what the bus has now, and still retain the split gears for when more power is needed? - the bus has a rebuilt 454 with an RV cam, 4 speed transmission with the split rear end - 2800 RPM gets you 55 MPH on the highway - I'd like to hit 60 MPH with the engine turning about 2300 RPM
Sleddgracer is offline   Reply With Quote
Old 09-17-2019, 07:41 PM   #2
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 2,194
Year: 1975
Coachwork: Chevy
Chassis: 8 window
Engine: 454 LS7
Rated Cap: 24,500
Quote:
Originally Posted by Sleddgracer View Post
I'm looking at a bus conversion that has a 2 speed rear end - I'm somewhat familiar with the split as I had a 56 Mercury 2 1/2 ton at one time that was equipped with the 2 speed rear end - my question today, would it be possible to replace the gears in the 2 speed so they become the faster highway gears?, or is it possible to replace the regular gears with something a bit more highway friendly than what the bus has now, and still retain the split gears for when more power is needed? - the bus has a rebuilt 454 with an RV cam, 4 speed transmission with the split rear end - 2800 RPM gets you 55 MPH on the highway - I'd like to hit 60 MPH with the engine turning about 2300 RPM
....................any one?................
Sleddgracer is offline   Reply With Quote
Old 09-18-2019, 05:05 AM   #3
Bus Crazy
 
Join Date: Sep 2015
Posts: 1,038
Year: 2002
Coachwork: Thomas Built Bus
Chassis: Freightliner FS65
Engine: Caterpillar 3126E Diesel
Rated Cap: 71 Passenger- 30,000 lbs.
Sorry, not my specialty.
Native is offline   Reply With Quote
Old 09-18-2019, 07:03 AM   #4
Bus Crazy
 
Ronnie's Avatar
 
Join Date: Oct 2017
Location: Virginia
Posts: 1,045
Year: 1971
Coachwork: Wayne
Chassis: International Loadstar 1700
Engine: 345 international V-8
Basically yes you can change the ring and pinion, and leave the planatary gears alone. Or change the whole carrier in the rear. Any idea of what rear it is? Eaton, Dana, model number etc?

Mine is an electric shifted Eaton with 5.14 ratio in high. Was in the Vermont and New Hampshire mountains last weekend and made good use of the 2 speed. Steepest grade was 12%, so got to do some split shifting.
Ronnie is offline   Reply With Quote
Old 09-18-2019, 09:48 AM   #5
Bus Crazy
 
Join Date: May 2014
Location: West Ohio
Posts: 1,219
Year: 1984
Coachwork: Bluebird
Chassis: International 1753
Engine: 6.9 International
Rated Cap: 65
Yes, you can get the 2 speed axles in a multitude of ratios. What ratios are available depends on the axle being looked at. Most 2 speed axles that I've seen personally are around 5.xx/7.xx area, Which is too high for most people looking.

I have a dana/spicer catalog in front of me now, and they show their medium duty 2 speed drive axles are available with a 3.90/5.32 up to 7.17/9.77

You likely won't find any of those in a salvage yard though because 2 speed axles were coupled with old gas engines and all of that stuff is kind of a thing of the past.

So then you're looking at purchasing new parts, which is $$$$$
Booyah45828 is offline   Reply With Quote
Old 09-18-2019, 10:55 AM   #6
Bus Crazy
 
Ronnie's Avatar
 
Join Date: Oct 2017
Location: Virginia
Posts: 1,045
Year: 1971
Coachwork: Wayne
Chassis: International Loadstar 1700
Engine: 345 international V-8
He is looking at an old gasser and mine is too.

So for me 60mph is at 2600rpm, and 70 is at 3000 with my rear and 10r22.5 tires which are 40" diameter
Ronnie is offline   Reply With Quote
Old 09-18-2019, 08:15 PM   #7
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 2,194
Year: 1975
Coachwork: Chevy
Chassis: 8 window
Engine: 454 LS7
Rated Cap: 24,500
Quote:
Originally Posted by Ronnie View Post
He is looking at an old gasser and mine is too.

So for me 60mph is at 2600rpm, and 70 is at 3000 with my rear and 10r22.5 tires which are 40" diameter
yeah, mine is an oldtimer - drive train has been rebuilt or gone over from one end of the bus to the other, rebuilt 454 with an RV cam, rebalanced drive shaft with new steady bearings, new brakes, new tires all the way around - all with less than 4000 miles on them - converted to a MH, but the conversion itself is rather shoddy, well worn and taken from an old MH or trailer, but everything is there and can be used this winter as is - $2600 US funds - tires and motor are worth more than the purchase price - my ticket is purchased and I'm flying north a week from tomorrow - he'll meet me at the airport, 15 minutes from his house, and if the bus is as it's supposed to be, he'll drive me 10 minutes in the opposite direction to the MV branch where I'll get the travel permit - I'll have the insurance papers in my hand before I leave home and all I have to do is stick them on the window - I'll learn more about the bus during the 600 mile drive home - I've been looking for a bus for months now, and was aware of this one for most of that time, but was hoping to find something a bit longer - this one will do the job, I think, the price is right, and time has become a bit of a crunch as dryland racing starts at the end of this month - we might miss the first race as it is, but oh-well, we'll survive
Attached Images
File Type: jpg over the top.jpg (93.6 KB, 6 views)
Sleddgracer is offline   Reply With Quote
Old 09-18-2019, 09:14 PM   #8
Bus Crazy
 
Ronnie's Avatar
 
Join Date: Oct 2017
Location: Virginia
Posts: 1,045
Year: 1971
Coachwork: Wayne
Chassis: International Loadstar 1700
Engine: 345 international V-8
I wish you well on your trip to pick up the bus.
Ronnie is offline   Reply With Quote
Old 09-18-2019, 10:15 PM   #9
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 2,194
Year: 1975
Coachwork: Chevy
Chassis: 8 window
Engine: 454 LS7
Rated Cap: 24,500
Quote:
Originally Posted by Ronnie View Post
I wish you well on your trip to pick up the bus.

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,
Sleddgracer is offline   Reply With Quote
Old 09-18-2019, 11:16 PM   #10
Bus Crazy
 
Elliot Naess's Avatar
 
Join Date: Oct 2005
Location: Clearlake, Northern California
Posts: 2,266
Year: 1992
Coachwork: Blue Bird
Chassis: TC-2000 Frt Eng, Tranny:MT643
Engine: 5,9 Cummins
Rated Cap: 84
Years ago, I talked with a big-truck transmission shop about two-speed rear ends and was advised to stay far away from them. They are difficult for most folks to drive CORRECTLY, and they fail often and dramatically -- especially when not driven absolutely correctly.
__________________
Elliot
Millicent The Bus - roof raised two feet, toy-hauler tailgate.
http://www.skoolie.net/forums/f11/th...gate-1564.html
Elliot Naess is offline   Reply With Quote
Old 09-19-2019, 02:21 AM   #11
Bus Crazy
 
Join Date: Sep 2015
Posts: 1,038
Year: 2002
Coachwork: Thomas Built Bus
Chassis: Freightliner FS65
Engine: Caterpillar 3126E Diesel
Rated Cap: 71 Passenger- 30,000 lbs.
Congratulations ... looks like you are close to getting that bus. It sure has been a long time for your search. I hope it all goes well.
Native is offline   Reply With Quote
Old 09-20-2019, 09:46 AM   #12
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 2,194
Year: 1975
Coachwork: Chevy
Chassis: 8 window
Engine: 454 LS7
Rated Cap: 24,500
Quote:
Originally Posted by Ronnie View Post
Basically yes you can change the ring and pinion, and leave the planatary gears alone. Or change the whole carrier in the rear. Any idea of what rear it is? Eaton, Dana, model number etc?

Mine is an electric shifted Eaton with 5.14 ratio in high. Was in the Vermont and New Hampshire mountains last weekend and made good use of the 2 speed. Steepest grade was 12%, so got to do some split shifting.

don't have the name model of the rear end
Sleddgracer is offline   Reply With Quote
Old 09-20-2019, 09:54 AM   #13
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 2,194
Year: 1975
Coachwork: Chevy
Chassis: 8 window
Engine: 454 LS7
Rated Cap: 24,500
Quote:
Originally Posted by Elliot Naess View Post
Years ago, I talked with a big-truck transmission shop about two-speed rear ends and was advised to stay far away from them. They are difficult for most folks to drive CORRECTLY, and they fail often and dramatically -- especially when not driven absolutely correctly.
thanks - I do have some experience with them - my daily driver was a 2 1/2 ton Mercury for a couple of years
Sleddgracer is offline   Reply With Quote
Old 10-05-2019, 07:44 PM   #14
Mini-Skoolie
 
Join Date: Jan 2015
Location: Ontario Canada
Posts: 50
Quote:
Originally Posted by Elliot Naess View Post
Years ago, I talked with a big-truck transmission shop about two-speed rear ends and was advised to stay far away from them. They are difficult for most folks to drive CORRECTLY, and they fail often and dramatically -- especially when not driven absolutely correctly.

I don't doubt that they have had some problems but I would wager 90% of those problems were because the driver was unaware of the proper shifting technique or was never shown. I've driven a few and they worked fine. You just have to shift properly.
capnron is offline   Reply With Quote
Old 10-05-2019, 08:09 PM   #15
Bus Nut
 
Join Date: Nov 2017
Location: Wright City MO
Posts: 267
Year: 1998
Coachwork: Bluebird
Chassis: Bluebird
Engine: 5.9 Cummins/Allison
Rated Cap: 74
Many moon ago I worked for one of those"chemical lawn care companies" our fleet of trucks were early 70' c-60 Chevy trucks with 350 and 292 I-6 engines all with 4speeds and 2 speed rears all driven by people barely old enough to posses a chauffers license I worked on those trucks for over three years and in that time never had any problems with a two=speed axle I thought they were damn near "bulletproof". Gene
__________________
Its hard to be wrong when you live in Wright City!
There is no mechanical problem that cannot be overcome by a skillfully applied combination of brute force and ignorance!
Gdog 5651 is offline   Reply With Quote
Old 10-06-2019, 05:05 PM   #16
Bus Crazy
 
Ronnie's Avatar
 
Join Date: Oct 2017
Location: Virginia
Posts: 1,045
Year: 1971
Coachwork: Wayne
Chassis: International Loadstar 1700
Engine: 345 international V-8
Did you get the bus and all go well?
Ronnie is offline   Reply With Quote
Old 10-06-2019, 06:11 PM   #17
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 2,194
Year: 1975
Coachwork: Chevy
Chassis: 8 window
Engine: 454 LS7
Rated Cap: 24,500
Quote:
Originally Posted by Ronnie View Post
Did you get the bus and all go well?
got the bus - had a few problems at first, but once they were ironed out, everything was pretty much as it should be - a fresh 454 with lots of power - pulled the hills well
Sleddgracer is offline   Reply With Quote
Old 10-06-2019, 08:20 PM   #18
Bus Crazy
 
Ronnie's Avatar
 
Join Date: Oct 2017
Location: Virginia
Posts: 1,045
Year: 1971
Coachwork: Wayne
Chassis: International Loadstar 1700
Engine: 345 international V-8
Quote:
Originally Posted by Sleddgracer View Post
got the bus - had a few problems at first, but once they were ironed out, everything was pretty much as it should be - a fresh 454 with lots of power - pulled the hills well
Plenty of cubes for power. now of course we need pictures
Ronnie is offline   Reply With Quote
Old 10-06-2019, 08:32 PM   #19
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 2,194
Year: 1975
Coachwork: Chevy
Chassis: 8 window
Engine: 454 LS7
Rated Cap: 24,500
Quote:
Originally Posted by Ronnie View Post
Plenty of cubes for power. now of course we need pictures
........................................... ...
Sleddgracer is offline   Reply With Quote
Reply

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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 02:25 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×