Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-25-2015, 05:49 PM   #617
gpt
4 Rivet Member
 
2014 25' FB Flying Cloud
sequim , Washington
Join Date: Dec 2014
Posts: 296
i cross mountain passes each time we go someplace. first up and then down. having the controller set up ahead of time, i have no need to fiddle with the controller in route. i do use engine compression and down shifting to my advantage, however, and i have discovered that by leaving the PU cruise control engaged, the downshifting is being done automatically, quite a nice feature. i find there is enough to think about in pass driving that deserves my attention with both hands on the wheel instead of trying to 'feather' the trailer brakes with the controller.
__________________

__________________
gpt is offline   Reply With Quote
Old 06-25-2015, 06:49 PM   #618
Rivet Master
 
Moflash's Avatar
 
2007 28' International CCD
Springfield , Missouri
Join Date: Apr 2011
Posts: 1,170
To each his own but that is what the controller is designed for and has nothing to do with your gain as that is a brake timing adjustment.


Sent from my iPhone using Airstream Forums
__________________

__________________
Moflash is offline   Reply With Quote
Old 06-25-2015, 09:27 PM   #619
Rivet Master
 
Gene's Avatar
 
2008 25' Safari FB SE
Grand Junction , Colorado
Join Date: Sep 2007
Posts: 10,842
The Tundra is designed to downshift automatically when going downhill, but you can shift before it does and gain more engine braking.

Gene
__________________
Gene is offline   Reply With Quote
Old 06-26-2015, 06:22 AM   #620
Rivet Master
 
GettinAway's Avatar
 
2011 23' FB Flying Cloud
Chesterfield , Missouri
Join Date: Aug 2009
Posts: 838
Gain control makes me think of a story.. When I was buying my Tundra the sales rep who knew nothing about Tundras, told me the brake controller was built in, and you controlled it with the up and down motion of what is actually the transmission gear selector when you are in "S". I told him that I thought it actually changed what gear you were in. He was shocked, he'd been telling all his customers it was the brake controller. Every time I see it now it makes me chuckle.
__________________
2011 FC 23FB
2012 Toyota Tundra Dbl Cab, 5.7 4x4
GettinAway is offline   Reply With Quote
Old 06-26-2015, 08:11 AM   #621
Moderator
 
DKB_SATX's Avatar

 
2017 26' Flying Cloud
1976 Argosy 28
Alamo Heights , Texas
Join Date: Aug 2006
Posts: 6,401
Images: 1
Blog Entries: 7
Quote:
Originally Posted by GettinAway View Post
Gain control makes me think of a story.. When I was buying my Tundra the sales rep who knew nothing about Tundras, told me the brake controller was built in, and you controlled it with the up and down motion of what is actually the transmission gear selector when you are in "S". I told him that I thought it actually changed what gear you were in. He was shocked, he'd been telling all his customers it was the brake controller. Every time I see it now it makes me chuckle.
So, SO common for a customer who's done halfway-decent research to know way more about the vehicle they're buying than the salesman does. I've had them swear that FWD cars were RWD, etc.
__________________
David

Zero Gravitas 2017 Flying Cloud 26U | Il Progetto 1976 Argosy 28 Center Bath | WBCCI# 15566

He has all of the virtues I dislike and none of the vices I admire. Sir Winston Churchill
DKB_SATX is online now   Reply With Quote
Old 06-26-2015, 08:28 AM   #622
Rivet Master
 
KJRitchie's Avatar

 
2008 25' Classic
Wichita Falls , Texas
Join Date: Nov 2012
Posts: 4,223
Quote:
Originally Posted by Gene View Post
The Tundra is designed to downshift automatically when going downhill, but you can shift before it does and gain more engine braking.

Gene
How do you get that to work? I was in tow haul and despite braking it never shifted down. Do you have to be in D? I normally drive in S and keep 6th locked out. I was manually shifting down as needed from the console shifter.

Kelvin
__________________
2008 Classic 25fb "Silver Mistress"
2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
KJRitchie is offline   Reply With Quote
Old 06-26-2015, 01:42 PM   #623
Rivet Master
 
m.hony's Avatar
 
2013 30' Classic
Greenwood , Mississippi
Join Date: Oct 2012
Posts: 11,835
Leave it D and don't worry about it. The transmission will downshift, but not always as quickly as I want it to-


Sent from my iPhone using Airstream Forums
__________________
2013 Classic 30 Limited
2007 Silver Toyota Tundra Crew Max Limited 5.7 iForce
2006 Vivid Black Harley-Davidson Road King Classic
1999 Black Nissan Pathfinder LE
TAC #MS-10
WBCCI #1811, Region 6, Unit 56
Airforums #70955
m.hony is offline   Reply With Quote
Old 06-27-2015, 12:20 PM   #624
Slowpoke
 
Gnorts's Avatar
 
2012 27' Flying Cloud
Portland , Oregon
Join Date: Dec 2013
Posts: 255
It will downshift in D if you're off the gas and tap the brakes. If you're using cruise control, it will downshift when you reach 5 mph over your setting, again at 8 over. Mine will downshift on its own as far as 3rd gear. Then if you tap the brakes, of course the cruise disengages, and it upshifts. Manually downshifting is more predictable.

The gain on my P3 controller doesn't change trailer brake timing, it changes the voltage applied to the brakes. I also use the "booster" feature when on the open road, on setting #2. The booster does seem to apply the trailer brakes sooner, as well as boosting the gain.

I very seldom seem to be overloading the Tundra's brakes, even on steep downgrades. I downshift manually, and when I use the brakes (sparingly) the booster setting on the P3 seems to work well. I always feel in control; it never feels like the trailer is pushing me. On the rare occasion when I've had to hit the brakes long and hard on a downgrade, I too have gotten pulsation, but it's rare. I feel it in the wheel; it's certainly coming from the front rotors. And I still seem to stay in control, with the trailer brakes keeping everything lined up.

I turn the booster off when driving in traffic, stopping for lights, etc. It's very jerky at low speeds, applying the trailer brakes as soon as I merely touch the pedal. The controller gets booster input from the truck's brake light circuit.

I have set the gain on the P3, with the booster off, by rolling gently at about 15mph on flat ground and applying the manual lever on the controller. I don't want to lock the trailer brakes, but I want the trailer to aggressively slow me.
__________________
Like the tortoise, travelin' slow with the house on our back
2012 FC27FB "Ted Zeppelin"
2010 Tundra Crewmax Platinum "Silver Rhino"
Gnorts is offline   Reply With Quote
Old 06-27-2015, 12:49 PM   #625
Slowpoke
 
Gnorts's Avatar
 
2012 27' Flying Cloud
Portland , Oregon
Join Date: Dec 2013
Posts: 255
Also, regarding the brake pulsation issue.

A few years ago, I did a front brake upgrade on my Lexus SC400. The tech who did the work for me had Lexus factory training, and he now works as a tech at a Toyota dealer. He had a number of good pointers about front brake pulsation, all of which seem to make sense.

First, he said he always, always takes a thin skin cut on brand-new rotors, even the OEM ones, and he does it in a lathe, not on the vehicle.

He took me on his test drive after he installed the new (larger) rotors and calipers. He said that the new parts would feel spongy and weird until he got up to speed (with no traffic) and applied the brakes *hard* - just short of locking up and activating the abs - but not coming to a complete stop. He would slow aggressively from 60 to 15, then get back up to 60 and do it again, then maybe a third time if needed. This aggressive braking mates the surfaces of the pads to the rotors.

He also said that front brake pulsation is not a result of warped rotors, and people's faulty assumption lines the pockets of many brake shops, selling rotor refacing and replacement when it's not needed.

He said that a warped rotor won't cause pulsation because as the pads ride the warped surface, one piston moves out as the opposing one moves in, and the pedal pressure feedback remains the same. He said that pulsation is caused by "glazed" spots on the rotors. The glaze is deposited on the rotor surface by the pads, if they are hot when the vehicle comes to a stop and the rotor stops turning while the pads are still under pressure against the rotor.

For instance, you descend a steep hill (with or without the trailer behind you) and ride the brakes all the way down the hill, At the bottom, you have to come to a stop at a traffic light. Even if the light is on level ground, if your vehicle has an automatic transmission, your foot will remain on the brake when you come to a stop. Hot pads under pressure against a hot rotor will "cook" some of the binder out of the pads, which will produce a glaze on the rotor, just where the pads were in contact.

At some point, he said, you will end up noticing pulsation, usually on light braking, like when exiting the freeway and slowing down. It's the glazed spot on the rotor passing under the pads that you feel.

He says you can often "scrub" the glaze off the rotors using his break-in procedure, which I mentioned above.

Try it - at your own risk. It's worked for me.
__________________
Like the tortoise, travelin' slow with the house on our back
2012 FC27FB "Ted Zeppelin"
2010 Tundra Crewmax Platinum "Silver Rhino"
Gnorts is offline   Reply With Quote
Old 06-27-2015, 12:58 PM   #626
Slowpoke
 
Gnorts's Avatar
 
2012 27' Flying Cloud
Portland , Oregon
Join Date: Dec 2013
Posts: 255
Another bit of trivia, sort of.

Yesterday, the VP of sales for Airstream spoke here at the WBCCI annual rally. He said the #1 tow vehicle chosen by new Airstream buyers is Ford.

The #2 choice is Toyota. "People love their Tundras," he said.
__________________
Like the tortoise, travelin' slow with the house on our back
2012 FC27FB "Ted Zeppelin"
2010 Tundra Crewmax Platinum "Silver Rhino"
Gnorts is offline   Reply With Quote
Old 06-27-2015, 04:50 PM   #627
Rivet Master
 
m.hony's Avatar
 
2013 30' Classic
Greenwood , Mississippi
Join Date: Oct 2012
Posts: 11,835
How in the world did they gather that information?
I agree with people loving their Tundras, but around here there are many GM and Ram fans, too.
I would say in this geographic area, Ford and GM are about the same in popularity. Then Ram, Tundra, and Titan.


Sent from my iPhone using Airstream Forums
__________________
2013 Classic 30 Limited
2007 Silver Toyota Tundra Crew Max Limited 5.7 iForce
2006 Vivid Black Harley-Davidson Road King Classic
1999 Black Nissan Pathfinder LE
TAC #MS-10
WBCCI #1811, Region 6, Unit 56
Airforums #70955
m.hony is offline   Reply With Quote
Old 06-28-2015, 06:23 AM   #628
Rivet Master
 
GettinAway's Avatar
 
2011 23' FB Flying Cloud
Chesterfield , Missouri
Join Date: Aug 2009
Posts: 838
Hey Gnorts, I had not heard that about the glazing of the rotors. That's interesting.
We've got a bit of brake pulsing with my wife's Landcruiser. We pulled the 23FB with it for a few years. Now the Tundra gets that job. I'll try the brake scrub procedure and see if it helps. If I can find a lonely stretch of road for 60 to 15 slowdowns.
Thanks for the info.
__________________
2011 FC 23FB
2012 Toyota Tundra Dbl Cab, 5.7 4x4
GettinAway is offline   Reply With Quote
Old 06-28-2015, 11:29 AM   #629
Slowpoke
 
Gnorts's Avatar
 
2012 27' Flying Cloud
Portland , Oregon
Join Date: Dec 2013
Posts: 255
Quote:
Originally Posted by m.hony View Post
How in the world did they gather that information?
The factory gets the data from the dealers. It applies to new trailer purchases only. So, it just points to current trends, not to the whole picture of who's towing Airstreams with which brand of TV.

The sales VP also said that the buyers of the smaller trailers are increasingly interested in towing them with SUV's, minivans and smaller TV's.
__________________
Like the tortoise, travelin' slow with the house on our back
2012 FC27FB "Ted Zeppelin"
2010 Tundra Crewmax Platinum "Silver Rhino"
Gnorts is offline   Reply With Quote
Old 06-29-2015, 02:15 PM   #630
Rivet Master
 
m.hony's Avatar
 
2013 30' Classic
Greenwood , Mississippi
Join Date: Oct 2012
Posts: 11,835
There are a lot of Tundras pulling Airstreams and other brands.
Maybe people who formerly drove GM or Ram bought Tundras?


Sent from my iPhone using Airstream Forums
__________________

__________________
2013 Classic 30 Limited
2007 Silver Toyota Tundra Crew Max Limited 5.7 iForce
2006 Vivid Black Harley-Davidson Road King Classic
1999 Black Nissan Pathfinder LE
TAC #MS-10
WBCCI #1811, Region 6, Unit 56
Airforums #70955
m.hony is offline   Reply With Quote
Reply

Tags
toyota tundra, tow vehicles


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
Toyota Tundra rochar3 Tow Vehicles 140 09-13-2014 09:54 PM
Toyota Highlander as a tow vehicle? hellonewman! Tow Vehicles 6 07-13-2007 08:59 PM
Toyota Sequoia as Tow Vehicle Thegman Tow Vehicles 12 10-13-2006 12:15 PM
New Toyota FJ Cruiser as a tow vehicle? chickin Tow Vehicles 10 10-01-2006 11:15 AM
Old Toyota V6 Pickup as a Tow Vehicle? geokid1 Tow Vehicles 10 04-02-2004 07:44 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:22 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.