ARB 10.5" Locker will exist - Toyota Tundra Forums : Tundra Solutions Forum

Jowett Engineering · #1 (**permalink**) 10-30-2009, 04:58 PM

So, who would like a locker for the 10.5" axle? Well, if things go according to plan Jowett Engineering will take delivery of ARB 10.5" Lockers in May. I put a proposal in with ARB a few weeks back in order to get things moving again. We hashed it out to an order of 50 units to make it worth placing it into production. We have exclusive rights to sell it for a couple months before all other accounts can get their hands on it. So if you are interested in being one of the first, please send me a PM so I can get a list together. Over the winter we will be taking deposits, I will contact those on the list at that time.

ARB part # is RD146 and the price will $1094 for locker.

The compressor will be additional.

There are no pictures of production units at this time. For now a picture of the RD141 front (which is available) and the RD64 9.5" rear.

dyogim · #2 (**permalink**) 10-30-2009, 05:30 PM

Can you have one installed in a housing and with 4.88 gears and leaf springs set for a 1 Gen Tundra?!?!

JMSinMD · #3 (**permalink**) 10-30-2009, 06:14 PM

Quote:

Originally Posted by Jowett Engineering

We hashed it out to an order of 50 units to make it worth placing it into production. We have exclusive rights to sell it for a couple months before all other accounts can get their hands on it.

You couldn't get exclusive rights for any longer? I'm waiting on your brake rotors myself.

joepersad · #4 (**permalink**) 10-30-2009, 06:47 PM

Explain the air locking deal, I want something that works like an Eaton that senses slip and locks. Will you have to change your ring gear settings to install? or jsut substitue this differential with new bearing shims, bearings and drive??
thanks

Jowett Engineering · #5 (**permalink**) 10-30-2009, 07:32 PM

No aftermarket gears for the 10.5" yet... sorry.

I'm waiting for the rotors, too... trust me!

When required, the air locker is maually activated via a button on the dash. Should be swap in the diff with bearings and shim to proper backlash.

Gutz · #6 (**permalink**) 10-30-2009, 09:21 PM

So this would be for more of an off-rading ordeal or can I use it at the track for better launches?

Jowett Engineering · #7 (**permalink**) 10-30-2009, 09:29 PM

Perfect for two wheel peel on the track.

Ear Whiskers · #8 (**permalink**) 10-30-2009, 10:14 PM

Very cool! Thanks Jowett for doing this.

My only experience with lockers is on my '94 FZJ, and the LC200's over on MUD have had no problems. But as you well know, those 200's can't be supercharged like our Tundras. My expertise is no where near yours so I have a question for you:

Any concerns with our axles handling the extra torque from superchargers while locked? I'm guessing from your response to Gutz that locked, supercharged Tundras should be just fine?

Thanks again for taking the initiative!

Coal Dragger · #9 (**permalink**) 10-30-2009, 10:57 PM

Those lockers are usually several magnitudes stronger than everything else in the axle. They will not be the weak link.

joepersad · #10 (**permalink**) 10-30-2009, 11:01 PM

Since you all can do this with an air locking device why not offer a true trac or eaton posi as well? how many splines and what dia. axles do our tundra's have?
I would put one on in a minute, I dont really want numerically higher gears since I beat the highway but I am less than pleased with the ecu management of my traction and the hesitation associated with the ecu when you have wheelspin. It sounds like the setup you all are developing is mostly for offroad and track use(which is great) but not all of us are 4wd or track bound. Thank you for your efforts though because this is the only way the rest of us will ever get a usable posi unit - oneday.
Joe

DawgBonez · #11 (**permalink**) 10-30-2009, 11:08 PM

Quote:

Originally Posted by Ear Whiskers

. My expertise is no where near yours so I have a question for you:

Any concerns with our axles handling the extra torque from superchargers while locked? I'm guessing from your response to Gutz that locked, supercharged Tundras should be just fine?

Since ownership, mine has never rendered a one wheel wonder.......
Seriously...never......
WOT Restriction?

I've launched in 4WD on dry and wet conditions as well..... It hooks and goes...

But that's not to say that you're not loading the drivetrain with huge a$$ AT/MT tires

IMO...if you're doing some serious low speed crawlin with a SC.... then you might be in some trouble

Ear Whiskers · #12 (**permalink**) 10-31-2009, 12:09 AM

Quote:

Originally Posted by Coal Dragger

Those lockers are usually several magnitudes stronger than everything else in the axle. They will not be the weak link.

Yeah, my concern lies with the FR axles and not the ARBs.

Quote:

Originally Posted by DawgBonez

IMO...if you're doing some serious low speed crawlin with a SC.... then you might be in some trouble

Do you mean crawling while supercharged AND locked?

I know there are supercharged (and turbo'd) Tacomas, FJs, and Land Cruisers that use lockers out on the trails but I don't know if that same reasoning would apply to Tundras, as well.

My impulsive reaction is to grab the ARBs (and plan for a Land Cruiser KDSS mod) for my Tundra (sort of like an IFS version of the Power Wagon) since on stock power lockers should be fine. However, if down the line I decide to also throw in a supercharger, I am wondering if I'll need to start upgrading components to help handle the extra torque while locked. My application would be for off-road purposes (I know a supercharger is not needed since the 5.7L is more than capable but I would at least want to be first to the trail-head!). I have a Crew Max now but I am considering an RCSB next year for extended off-road travel pursuits.

I don't want to start down that upgrading road... ok... maybe I wouldn't mind all that much but my pocket book definitely would.

Jowett Engineering · #13 (**permalink**) 10-31-2009, 08:26 AM

The axle shafts for the 10.5" measure a very large 1.457" in diameter with 36 splines. Nothing is indestrutible, but I highly doubt we'll see those break, even locked behind a SC'd engine. The rear axle is just plain stout, way more than the stock truck needs.

I am a fan of the TrueTrac, and hope to offer one in the future. One thing at a time...

Here is a picture of the Prototype from 4-Wheel & Offroad

Article 2007 Toyota Tundra Rear Axle - 4Wheel & Off-Road Magazine

Sid Post · #14 (**permalink**) 10-31-2009, 11:38 AM

Quote:

Originally Posted by Jowett Engineering

I am a fan of the TrueTrac, and hope to offer one in the future.

Where and when do I send my money? Seriously ...

ahitch · #15 (**permalink**) 10-31-2009, 01:33 PM

Is the RD141 for the front of the '07 and up Tundra? If so how much do they run. What will the nannies do with the lockers engaged? I suppose since there will be no difference in wheel slippage from side to side they won't engage. I work in the woods as a forester and have been stuck 3 times in the last couple of months in stuff my F-150 would have gone through in 2wd. Same tires as I have now. I hate the way Toyota made the 4wd work(my only complaint for the whole truck).