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05-10-2015, 05:00 PM
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#1
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Senior Member
Join Date: Nov 2014
Posts: 2,515
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2016 3 Stage Brake on ISL engine?
I see the 2016 Cummins engines will have 3 Stage vs 2 Stage brakes. Is this a Cummins engine improvement? What is the advantage all you 3 Stage brake experts?
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05-10-2015, 05:11 PM
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#2
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Senior Member
Newmar Owners Club
Join Date: Oct 2009
Posts: 10,310
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A lot more stopping power........using all the valves for all 6 piston's instead of 2 or 4 piston valves for engine braking(2 stage). Great improvement!
__________________
2012 Essex 4544 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006 Ultra & 1989 Springer, 2003 Harley-Davidson
FLHR Road King Anniversary
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05-10-2015, 05:43 PM
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#3
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Senior Member
Freightliner Owners Club
Join Date: Oct 2002
Location: Fairview TX
Posts: 2,463
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With 3 stages on my isx, I find I now have one with too much braking, one with too little and, FINALLY....one just right!  this improvement is really a winner!
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Slabman
2019 Newmar Ventana 3717
2007 Lexus LX470 Toad
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05-10-2015, 06:13 PM
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#4
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Administrator in Memoriam
Newmar Owners Club Retired Fire Service RVer's Spartan Chassis
Join Date: May 2000
Location: Newark, DE
Posts: 25,898
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It's my understanding a 2 stage Jake brake uses 3 cylinders on low and all 6 on high.
A 3 stage uses 2, 4, or all 6 cylinders, providing a wider range of engine braking.
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Adios, Dirk - '84 Real Lite Truck Camper, '86 Wilderness Cimarron TT, previously 4 years as a fulltimer in a '07 DSDP
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05-10-2015, 06:26 PM
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#5
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Senior Member
Join Date: Nov 2014
Posts: 2,515
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Sounds like a 3 bears story to hot, to cold and just right. When do you know it is just right? What do you watch for when picking the braking and how do you know it is just right? RPM's?
As you can see by the questions I have not driven one of these but I sure would like to in the near future.
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05-10-2015, 06:29 PM
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#6
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Senior Member
Freightliner Owners Club
Join Date: Oct 2002
Location: Fairview TX
Posts: 2,463
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I find for most applications, the middle one gives me the best combo of braking, but not too much. You just play around with each one and will find the one you'll use for most occasions. Obviously, if you're careening down a 12% grade, you'll want the max.
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Slabman
2019 Newmar Ventana 3717
2007 Lexus LX470 Toad
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05-10-2015, 07:53 PM
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#7
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Senior Member
Join Date: Nov 2014
Posts: 2,515
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12% Grade  Is there a 4th Stage oh the brakes....real brakes
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05-11-2015, 04:01 AM
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#8
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Senior Member
Newmar Owners Club
Join Date: Oct 2009
Posts: 10,310
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Quote:
Originally Posted by Route 66
It's my understanding a 2 stage Jake brake uses 3 cylinders on low and all 6 on high.
A 3 stage uses 2, 4, or all 6 cylinders, providing a wider range of engine braking.
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You are correct Dirk, I typed in the wrong numbers....Thank you!
__________________
2012 Essex 4544 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006 Ultra & 1989 Springer, 2003 Harley-Davidson
FLHR Road King Anniversary
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05-11-2015, 04:42 AM
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#9
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Administrator in Memoriam
Newmar Owners Club Retired Fire Service RVer's Spartan Chassis
Join Date: May 2000
Location: Newark, DE
Posts: 25,898
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I had a 2 stage Jake brake and sometimes the high setting was working too well and I would switch it to low. If my speed increased too much, I'd switch it back to high.
The best answer is, you change the brake setting as conditions warrant.
Quote:
Originally Posted by Canuck53
Sounds like a 3 bears story to hot, to cold and just right. When do you know it is just right? What do you watch for when picking the braking and how do you know it is just right? RPM's?
As you can see by the questions I have not driven one of these but I sure would like to in the near future.
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Adios, Dirk - '84 Real Lite Truck Camper, '86 Wilderness Cimarron TT, previously 4 years as a fulltimer in a '07 DSDP
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05-11-2015, 04:56 AM
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#10
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Senior Member
Monaco Owners Club Vintage RV Owners Club
Join Date: Sep 2014
Location: anywhere U.S.A, Currently back home in Thailand!
Posts: 4,245
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The newer electronic motors, will do the Jake brakes for you on cruse, will apply the right amount of braking to hold your speed to the set point, by turning the Jake's to different levels, to hold your speed at the preset speed! Some do this, some do not, it is a setting in the ECM, that the Cummins shop can do for you! Some will just turn the Jake's on the #3 setting only, so ask the Cummins dealer what your spec. motor will or will not do! Or you have to do it manually, oh, such a pain!!! Hahahaha!!
Hope this helps! Rail! 
__________________
Retired, and "Always on Holiday!"
1996 Monaco Windsor 38PB, "Mona" 275 HP., 8.3 Cummins, 3060 Allison 6 speed, 2001 PT Cruiser, "Bailey"
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05-11-2015, 07:41 AM
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#11
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Senior Member
Join Date: Apr 2010
Location: Western NY
Posts: 3,809
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Quote:
Originally Posted by guardrail53
The newer electronic motors, will do the Jake brakes for you on cruse, will apply the right amount of braking to hold your speed to the set point, by turning the Jake's to different levels, to hold your speed at the preset speed! Some do this, some do not, it is a setting in the ECM, that the Cummins shop can do for you! Some will just turn the Jake's on the #3 setting only, so ask the Cummins dealer what your spec. motor will or will not do! Or you have to do it manually, oh, such a pain!!! Hahahaha!!
Hope this helps! Rail! |
You mention Jake brakes, but is a Jake the same as an engine or exhaust brake?
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2018.5 Entegra Aspire 44R-Sold, 2019 Chevy Blazer-Sold. 2022 Genesis GV-80.
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05-11-2015, 07:54 AM
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#12
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Senior Member
Join Date: Nov 2008
Location: Cosby, Tn
Posts: 6,587
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Quote:
Originally Posted by wnytaxman
You mention Jake brakes, but is a Jake the same as an engine or exhaust brake?
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Generally speaking, when someone uses the term "Jake brake" they mean internal engine compression brake. It is a produce licensed by the Jacobs Corp. it changes the engine valve timing to turn the engine into a big air compressor. As exhaust brake can take one of two forms. Traditionally, it's a valve in the exhaust just after the turbo that when closed, produces back pressure in the engine that retards it's RPMs. It can also be a function of a VG turbo (variable geometry).
Steve Ownby
Full time since '07
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Steve Ownby
Full time since 2007
2003 Monaco Signature
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05-11-2015, 07:55 AM
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#13
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Administrator in Memoriam
Newmar Owners Club Retired Fire Service RVer's Spartan Chassis
Join Date: May 2000
Location: Newark, DE
Posts: 25,898
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Jacobs makes both engine compression release and exhaust brakes.
In this case, engine brakes are being discussed.
Quote:
Originally Posted by wnytaxman
You mention Jake brakes, but is a Jake the same as an engine or exhaust brake?
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__________________
Adios, Dirk - '84 Real Lite Truck Camper, '86 Wilderness Cimarron TT, previously 4 years as a fulltimer in a '07 DSDP
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05-11-2015, 09:05 AM
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#14
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Senior Member
Join Date: Jul 2012
Location: Boise Idaho
Posts: 466
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So, I have a question for you all. The 2015 DSDP has a 2 speed "Jake Brake", we travel a lot in Colorado, several of the posts in this thread are from folks operating the Essex which I believe is a much heavier coach. Do you all feel this is an option a Dutch Star owner could not live without? Or, Is the 2 stage about all you need. I suppose there's a few people getting ready to make the purchase. You know the deal, nice to have or can't live with out?? That is the question? What else about this new chassis do you all think is important??
Thanks,
Jeff and Lynn
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Jeff and Lynn Stevenson, Madison, South Dakota
2015 Dutch Star 4369, 2015 Jeep Grand Cherokee, Two paddleboards and two bikes.
" Luck favors the prepared "
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Linear Mode
