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 02-13-2016, 07:25 PM   #57
Senior Member
 
Rich-n-Linda's Avatar
 
Join Date: Nov 2011
Posts: 884
Quote:
Originally Posted by DMTTRANSPORT View Post
FYI, the single stage engine brake has the same amount of hold back power as the three stage....think!

No it doesn't. Not even close.

A single stage exhaust brake does not have anywhere near the braking power of a Jake Brake (compression brake.) I have a 2-stage Jake on the ISL in my coach and I never have to use the service brakes on interstate grades. On a 6% grade I often have to switch back and forth between LOW and HIGH because in the high position it slows me down too much.
__________________

__________________
Rich-n-Linda 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 02-13-2016, 08:15 PM   #58
Senior Member
 
jarwiebe's Avatar


 
Newmar Owners Club
Spartan Chassis
Join Date: Jul 2012
Location: Manitoba, Canada
Posts: 313
Quote:
Originally Posted by DMTTRANSPORT View Post
FYI, the single stage engine brake has the same amount of hold back power as the three stage....think!


Quote:
Originally Posted by Rich-n-Linda View Post
No it doesn't. Not even close.

A single stage exhaust brake does not have anywhere near the braking power of a Jake Brake (compression brake.) I have a 2-stage Jake on the ISL in my coach and I never have to use the service brakes on interstate grades. On a 6% grade I often have to switch back and forth between LOW and HIGH because in the high position it slows me down too much.
__________________

__________________
Jake
2005 DSDP 4024, Cummins ISL 370, Spartan MM Chassis / 2007 Jeep Liberty, Blue Ox Base Plate, Aventa LX Tow Bar, RVI 2 Brakes / 1996 Mariah Shabah Z210 - 5.7L Alpha 1 Gen 2
jarwiebe is offline   Reply With Quote
Old 02-13-2016, 10:03 PM   #59
Senior Member
 
Join Date: Dec 2013
Location: Lake Havasu City, AZ & Plover, WI
Posts: 1,710
It's great that the op has asked this question. However it re-enforces my belief that before anyone, with a few exceptions, can legally drive a complex diesel motor home, should be required to take a driving course along with an educational class to learn the safe way to drive and maintain one. When I was younger, I had to pass an exam to drive a school bus. Then I had to get a CDL license to drive our semi and crane trucks, I also had to get an endorsement to ride a motorcycle. Yet, a person who may have never driven anything heavier than a pickup truck can walk in and buy a complex 30 to 40,000# diesel pusher and drive off into the sunset with little or no experience of how to deal with many different potentially dangerous situations that can happen to any of us.

Tell me where I'm wrong.
__________________
2013 43 QGP Allegro Bus
Crasher is offline   Reply With Quote
Old 02-13-2016, 11:04 PM   #60
Senior Member
 
Ray,IN's Avatar
 
Join Date: Aug 2001
Location: North America somewhere
Posts: 13,688
Quote:
Originally Posted by Crasher View Post
It's great that the op has asked this question. However it re-enforces my belief that before anyone, with a few exceptions, can legally drive a complex diesel motor home, should be required to take a driving course along with an educational class to learn the safe way to drive and maintain one. When I was younger, I had to pass an exam to drive a school bus. Then I had to get a CDL license to drive our semi and crane trucks, I also had to get an endorsement to ride a motorcycle. Yet, a person who may have never driven anything heavier than a pickup truck can walk in and buy a complex 30 to 40,000# diesel pusher and drive off into the sunset with little or no experience of how to deal with many different potentially dangerous situations that can happen to any of us.

Tell me where I'm wrong.
No-one can challenge that opinion.
__________________
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution. "Abraham Lincoln"
Ray,IN is offline   Reply With Quote
Old 02-14-2016, 06:26 AM   #61
Senior Member
 
jwmaustin's Avatar


 
Winnebago Owners Club
Freightliner Owners Club
Join Date: May 2013
Location: Nashville, IN 47448
Posts: 598
You know I can't challenge that and have always said the same thing. But I'm wondering why we don't hear of more accidents and have more issues with the high cost of insurance as we get older...
__________________
Bill & Jenny - 2016 Winnebago Itasca Ellipse 42HD, 43 ft, Cummins 8.9 ISL - Blue Ox and SMARTCAR. Once/month traveler in Midwest and (as ofen as possible) Southern US. Home - Nashville, Indiana (Beautiful Brown County)
jwmaustin is offline   Reply With Quote
Old 02-14-2016, 08:17 AM   #62
Registered User
 
mel s's Avatar
 
Join Date: Mar 2010
Posts: 8,777
Quote:
Originally Posted by ;2938867
FYI, the single stage engine brake has the same amount of hold back power as the three stage....think!
DMTTRANSPORT
You are correct.

When a "3 stage compression release engine brake", (frequently called a "Jake brake" or "Jacobs brake"), is set to "3" it has the SAME amount of hold back power as a "single stage compression release engine brake".

However when set to "2" a 3 stage has LESS hold back power than a single stage... (even less when set to "1").

Mel
'96 Safari
__________________
mel s is offline   Reply With Quote
Old 02-14-2016, 08:24 AM   #63
Senior Member
 
DMTTRANSPORT's Avatar
 
Join Date: May 2014
Location: Henderson, Nevada
Posts: 1,225
Quote:
Originally Posted by mel s View Post
DMTTRANSPORT
You are correct.

When a "3 stage compression release engine brake", (frequently called a "Jake brake" or "Jacobs brake"), is set to "3" it has the SAME amount of hold back power as a "single stage compression release engine brake".

However when set to "2" a 3 stage has LESS hold back power than a single stage... (even less when set to "1").

Mel
'96 Safari
Thanks Mel, I gave him the chance to THINK, but......
__________________
2005 Newmar DS 4023, Spartan Chassis, ISL 370 Cumapart, 2008 Jeep Rubicon 4dr, 2015 Kia Soul, 1969 Italian & 2004 Akita
DMTTRANSPORT is offline   Reply With Quote
Old 02-14-2016, 08:31 AM   #64
Senior Member
 
DMTTRANSPORT's Avatar
 
Join Date: May 2014
Location: Henderson, Nevada
Posts: 1,225
Quote:
Originally Posted by Rich-n-Linda View Post
No it doesn't. Not even close.

A single stage exhaust brake does not have anywhere near the braking power of a Jake Brake (compression brake.) I have a 2-stage Jake on the ISL in my coach and I never have to use the service brakes on interstate grades. On a 6% grade I often have to switch back and forth between LOW and HIGH because in the high position it slows me down too much.
Sorry, a single stage engine brake offers "on-off" which means you cannot select 2 cylinders, 4 cylinders or all 6, it offers all 6 only, yours offers 3 cylinders or 6 cylinders, single stage is the same as yours with out the de rate of other cylinders.....
__________________
2005 Newmar DS 4023, Spartan Chassis, ISL 370 Cumapart, 2008 Jeep Rubicon 4dr, 2015 Kia Soul, 1969 Italian & 2004 Akita
DMTTRANSPORT is offline   Reply With Quote
Old 02-14-2016, 10:34 AM   #65
Senior Member
 
Tony Lee's Avatar
 
Join Date: Sep 2012
Location: Peru heading for Brasilia, Brazil
Posts: 2,117
Quote:
Originally Posted by Rich-n-Linda View Post
No it doesn't. Not even close.

A single stage exhaust brake does not have anywhere near the braking power of a Jake Brake (compression brake.) I have a 2-stage Jake on the ISL in my coach and I never have to use the service brakes on interstate grades. On a 6% grade I often have to switch back and forth between LOW and HIGH because in the high position it slows me down too much.
He is correct 100%. He clearly wrote "engine brake" and it is true that the maximum braking for a single stage is the same as the maximum from a three-stage
__________________
Tony Lee - International Grey Nomad. Picasa Album - Travel Map
RVs. USA - Airstream Cutter; in Australia - MC8 40' DIY Coach conversion & OKA 4x4 MH; in Germany - Hobby Class C; in S America - F350 with 2500 10.6 Bigfoot camper
Tony Lee is offline   Reply With Quote
Old 02-14-2016, 11:24 AM   #66
Senior Member
 
DMTTRANSPORT's Avatar
 
Join Date: May 2014
Location: Henderson, Nevada
Posts: 1,225
Quote:
Originally Posted by Tony Lee View Post
He is correct 100%. He clearly wrote "engine brake" and it is true that the maximum braking for a single stage is the same as the maximum from a three-stage

LOL, yes he is correct if the Engine brake is not operating correctly and the only available jake is the 2 cylinders on the 1st/single stage (3 stage) or 3 cylinders on a (2 stage), I stand corrected.

The reality of the issue is stated above though.
__________________
2005 Newmar DS 4023, Spartan Chassis, ISL 370 Cumapart, 2008 Jeep Rubicon 4dr, 2015 Kia Soul, 1969 Italian & 2004 Akita
DMTTRANSPORT is offline   Reply With Quote
Old 02-14-2016, 03:17 PM   #67
Senior Member
 
96 Wideglide's Avatar
 
Holiday Rambler Owners Club
Join Date: Aug 2010
Posts: 3,218
Quote:
Originally Posted by -Gramps- View Post
Here is some really good info as to how to handle mountain driving:

https://www.fmca.com/motorhome/motor...-the-work.html
Interesting, but not a method I want to use. I'm not going to let my rpm's get so high the tranny upshifts to protect the engine, over, and over, and over!!
__________________
Ben & Sharon
2008 43' Holiday Rambler Scepter PDQ
96 Wideglide is online now   Reply With Quote
Old 02-14-2016, 03:57 PM   #68
Senior Member
 
Join Date: Aug 2010
Posts: 1,888
Quote:
Originally Posted by RayBH View Post
I am surprised in this discussion that there are several references to risks of overheating of the brakes but no mention of running low on air supply by frequent applications of the brakes.



When I took the air brakes course, the instructor stressed holding a steady pressure on the brakes (as DMTTRANSPORT mentioned) as opposed to frequent short brake applications to control the speed, since each application and release eats up air supply. He maintained that the brakes will not overheat if a steady pressure is used to keep the speed under control.



I think paying attention to one's air supply should also be mentioned in this discussion.

The instructor at your air brakes course in dangerous. He needs to quit!!!
__________________
Terry & Alice
2006 Bounder 38L DP
2012 GMC Terrain
firedoc is offline   Reply With Quote
Old 02-14-2016, 05:02 PM   #69
Senior Member
 
DMTTRANSPORT's Avatar
 
Join Date: May 2014
Location: Henderson, Nevada
Posts: 1,225
Quote:
Originally Posted by firedoc View Post
The instructor at your air brakes course in dangerous. He needs to quit!!!
He needs to quit for the reason that you don't agree with his technique of descending down a grade, or, mine for that matter? I feel you should sell your Coach for the reason that you do not know the correct way and you could kill someone, get down the hill what ever way you are comfortable with.....geeeeze!
__________________
2005 Newmar DS 4023, Spartan Chassis, ISL 370 Cumapart, 2008 Jeep Rubicon 4dr, 2015 Kia Soul, 1969 Italian & 2004 Akita
DMTTRANSPORT is offline   Reply With Quote
Old 02-14-2016, 05:06 PM   #70
Senior Member
 
BRex45's Avatar
 
Join Date: Jul 2011
Posts: 300
The danger here is taking our mostly anecdotal knowledge and re-distributing it as some type of fact. Internet experts can get you killed. It's also apparent the concept of exhaust brakes as compared to engine brakes is not totally grasped here on iRV2

OTOH:


The first-hand experience of our long term pusher drivers and our members who have commercial driving and mechanical experience
is invaluable to us. We CAN learn from them.


Approach all downhill stretches carefully😐😐😐
__________________

__________________
BRex

'97 Country Coach Intrigue
BRex45 is online now   Reply With Quote
Reply

Tags
brake



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
ISC exhaust brake issues TSM35 Cummins Engines 6 10-28-2015 11:32 AM
Exhaust Brake Robert T Monaco Owner's Forum 22 07-05-2015 07:39 AM
Exhaust Brake KIX Spartan Motorhome Chassis Forum 33 03-05-2015 06:04 PM
Lack of exhaust brake performance MF 10 ctundra Navistar MaxxForce Engine Forum 18 01-10-2015 09:26 AM
Exhaust brake DClark Alpine Coach Owner's Forum 9 10-20-2014 08:41 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:27 PM.


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