From: David Cole (DavidCole@tk7.net)
Date: Sat May 31 2003 - 11:12:31 PDT
The problem with putting any type of locking or limited slip housing in a
differential that isn't air operated is that when you put the power to the
axles they will tend to lock. That means that your steering will be
compromised, ie understeer will result. That will be most notable when you
are on a solid surface such as concrete, have a load on the back end, hit
the gas and turn at the same time. The lockers will "lockup" effectively
creating two locked axles in the back. When you turn the front wheels, you
will be attempting to turn two almost solidly locked axles on pavement with
one set of single wheels in the front. This will make steering very
difficult. Serious understeer will result and the truck will not want to
turn.
If I were you, I'd try and find a way to put air lockers on all of the
axles. If you are going to do one, you might as well do them all. As has
been mentioned some of the M35s in Norway had air lockers on the rears. I
don't know how that was done, but if they did it years ago, certainly it
can be done again today.
Don't take it just from me, go talk to some guys that run the big 5 axle
dumps trucks. They routinely have locking interaxle diffs, and locking
diffs in the rear axles. They don't use limited slips. Ask them what
happens if they try to turn the dump on dry pavement with the interaxle
diff engaged and the locking diffs engaged. If they can turn, a lot of
rubber is left ont the road.
Good Luck,
Dave
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> .
On Tue, 27 May 2003 10:27:40 +0100, Michael Goodden
<mgmv@auroragroup.co.uk> wrote:
> Hi all
>
> It sounds to me like the best option overall is to put Detroit Lockers
> on both rear axles, and then an air engaging Locker in the front with
> lockout hubs. My reasoning for the option for disengaging the front
> locker is that off road you really want front wheel drive engaged and
> your lockout hubs engaged but there will be times when the steering
> effect of the Detroit when engaged could be an issue, but it would be
> very useful to be able to engage it on an air shift from the cab at
> times.
>
> I agree that the Detroit Locker should not cause any effect on the
> steering with front wheel drive disengaged and with Lockout Hubs, but I
> can also see times when you wouldn't want it interfering with your
> steering off road by being always engaged.
>
> Many thanks for everyone's input on this subject :-)
> Mike
> ___________________
> Michael Goodden
> The Global Tipi Adventure
> http://TheTipi.com
>
> -----Original Message-----
> From: Military Vehicles Mailing List [mailto:mil-veh@mil-veh.org] On
> Behalf Of m35products
> Sent: 27 May 2003 04:15
> To: Military Vehicles Mailing List
> Subject: Re: [MV] Detroit Lockers with Locking Hubs
>
> Maybe they haven't considered the use of lockout hubs in conjunction
> with
> their product.
>
> ----- Original Message ----- From: "Buzzard" <buzz@ebuzzard.com>
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Sent: Monday, May 26, 2003 11:11 PM
> Subject: Re: [MV] Detroit Lockers with Locking Hubs
>
>
>> The folks that make Detroit Lockers advise against using them in the
>> front.
>> -=-
>>
>>
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-- Dave
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