Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 09-17-2007, 08:17 PM   #1
Junior Member
 
Join Date: Jan 2006
Posts: 17
I am thinking about buying one of the Sportcoach diesel products by coachmen. I am new to this and need feed back from someone other then a salesmen who wants me to buy!
1st- I have noticed on a couple of 06-07 models that the ones with an allison 5 speed transmission are priced $10k to $20K less then the same rig with the allison 6 speed. Is the 5 speed not a good performer or does it not tow well? 2cd-I would like to be able to tow my suburban with what ever I get would the 5 speed hinder me?. Most of the units in the price range I would like to be in seem to have the 300hp engine. How does this perform on a 37-38 ft coach? Lastly what about the coachmen MH product itself?
Any warnings or known problems I should be aware of. Thanks for any input.
__________________

__________________
Bill, Jenni & Kids

Herd fan is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 09-17-2007, 08:17 PM   #2
Junior Member
 
Join Date: Jan 2006
Posts: 17
I am thinking about buying one of the Sportcoach diesel products by coachmen. I am new to this and need feed back from someone other then a salesmen who wants me to buy!
1st- I have noticed on a couple of 06-07 models that the ones with an allison 5 speed transmission are priced $10k to $20K less then the same rig with the allison 6 speed. Is the 5 speed not a good performer or does it not tow well? 2cd-I would like to be able to tow my suburban with what ever I get would the 5 speed hinder me?. Most of the units in the price range I would like to be in seem to have the 300hp engine. How does this perform on a 37-38 ft coach? Lastly what about the coachmen MH product itself?
Any warnings or known problems I should be aware of. Thanks for any input.
__________________

__________________
Bill, Jenni & Kids

Herd fan is offline   Reply With Quote
Old 09-18-2007, 01:55 AM   #3
Community Moderator
 
RV Wizard's Avatar


 
Country Coach Owners Club
Appalachian Campers
Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,062
Bill, first off the difference between the 5 and 6 speed Alison willbe more than just the transmissions in a diesel pusher. THe 6 speed has a double overdrive and a higher torgue rating; is physically bigger and tougher than the 5 speed. Usually the 5 speed is behind a smaller engine (less torgue) than the 6 speed. Stay tuned for more info on the Coachmen brand from those that have or have had one.
__________________
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
RV Wizard is offline   Reply With Quote
Old 09-18-2007, 08:13 AM   #4
Senior Member
 
Join Date: Apr 2003
Location: Oakton, Va
Posts: 1,149
The five speed Allison is a fine transmission and I see no reason it could not last as long as a six speed. The large price difference between five and six speed DPs is because there are several differences in the chassis including HP, torque, and weight. One unique advantage of a six speed is that you can better match peak torque with speed and get a little better performance and fuel economy. However, for less cost a package with a five speed can be put together that performs well. I have a five speed which has been flawless for seven years and is a good match for my power, weight, etc. Since the five speed was developed after the six speed it is more advanced in some ways. It has torque converter lockup in all speeds except 1st as I recall. I am not sure if the six speed has as complete a lock up. It explains why the five speed doesn't overheat. I advise some care with towing a suburban. Look carefully at the MH towing capacity which includes the receiver rating. The Gross Combined Vehicle Weight Rating (GCVWR)should be closely checked. Few MHs can tow a suburban.
__________________
Jim Walker
N Virginia
2014 Palazzo 33.2
Cummins 6.7 ISB, Allison 2100 6 Speed
J Walker is offline   Reply With Quote
Old 09-18-2007, 02:49 PM   #5
Member
 
Scratch & Goose's Avatar
 
Join Date: Feb 2005
Location: Livingston
Posts: 61
I have the 6 speed, and the derfferance is one spped....
Scratch
__________________
what ever it takes.....

2006 Itasca Meridian 39K
Scratch & Goose is offline   Reply With Quote
Old 09-18-2007, 05:06 PM   #6
Senior Member
 
Pusherman's Avatar
 
Join Date: Oct 2006
Location: Rochester NY
Posts: 2,546
The 5-speed has 1 overdrive gear; the 6 speed has 2. 4th gear in both trannys is 1:1.

The real difference between the 2 trannys is how much torque they can handle. I do not have the specifics, but the 6-speed Allison can handle more torque than the 5-speed.

If you are towing a heavy Toad, I would go with the 6-speed. (I would go for the 6-speed for driveability reasons also, with a 350hp engine being much more driveable in a coach the size you state above, over the 300hp engine. I owned both. Like the 350hp CAT C7/Allison 6speed over the 275/300hp engine w/5speed tranny much better).
__________________
Don
'07 Winnebago Journey 34H - CAT C7, Koni's, MCU's, SS Bell Crank, Safe-T-Plus
'07 HHR Toad, SMI AFO, Blue OX
Pusherman is offline   Reply With Quote
Old 09-18-2007, 05:55 PM   #7
Senior Member
 
Winnebago Owners Club
Join Date: Nov 2001
Location: Bexley,Ohio USA
Posts: 115
I had both setups. I had the 300 with the 5 speed and now have the 350 with the 6 speed.
There is a big difference between both setups.

The 350 with the 6 speed out performs the 300 with the 5 speed by a long shot.
__________________
2009 Winnebago Adventurer 38 N
2004 Suzuki XL Toad
LHyzer is offline   Reply With Quote
Old 09-19-2007, 11:33 AM   #8
Senior Member
 
quikduk's Avatar
 
Join Date: Aug 2007
Posts: 533
I only have the present DP for info. since it is my first DP, I can't compare it to anything else.

Mine has the 275-C Cummins 8.3L engine and the 3060 6 spd. trans. This was the ONLY combination in my particular mfrs. version since the 8.3L engine is the 800 FT/LBS of torque version whereas the other Gulfstream Sun Voyagers used the smaller 660 FT/LBS engine configuration.

BTW, my coach is a 8362 (36') but is actually 36'-10"...

I do not have any issues with power or torque. In fact the power is so smooth that your speed/acceleration can be quite deceiving.

Ken
__________________

__________________
1998 Gulfstream 36' Sun Voyager Bus Platinum
quikduk is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Workhorse Incorporates Full Synthetic in All Allison Transmissions DriVer Workhorse and Chevrolet Chassis Motorhome Forum 35 11-11-2013 06:53 PM
Allison transmissions Pedco Allison Transmission Forum 1 10-23-2008 01:32 AM
Allison Transmissions Donald Workhorse and Chevrolet Chassis Motorhome Forum 6 02-12-2006 03:31 PM
Allison 6 spd trans rvten Workhorse and Chevrolet Chassis Motorhome Forum 10 10-31-2005 05:26 PM
100% Transynd Installed In "new" Allison Transmissions. DriVer Workhorse and Chevrolet Chassis Motorhome Forum 24 10-15-2005 09:19 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:48 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.