Thread: Traction Control

That video is where me and my bro went mundaring power line track and my car defenently didn't behave as good as his but mind u it was extremely muddy when i was out there. At the 24 sec mark in the video is where i got stuck but i was going up not down but it doesn't quiet look the same its more rutted out at the moment. It could be that i haven't got muddies on my car most of the cars i went with couldn't get up there.

I'd like a day thier. Pat

Originally Posted by Naks

Rubbish!

My Puma is now 2yrs old with barely 31,000km on the clock. Of that, we have done 3 mild off-road trails (2 sand, one rocky), with TC barely kicking in. In fact, I can count the number of times TC has kicked in when we are off-road on one hand - CDL is always locked and tyres deflated.

The rear diff was replaced a couple of months ago and so was the gearbox.

So no, it can't be the TC causing all these diff failures

Yeah, Fair enough
I think Blknight might be onto something

Originally Posted by Blknight.aus

I actually think I have a valid line on why the puma back diff and and rear Tcase outputs are not lasting...

And you're not going to believe it But if what I think I've found is correct, Landrover has already visited and solved this problem previously.

Check out the angles on the rear shaft flanges and the shaft phasing.

I think a solution might be to shorten the trailing arms by an inch,
that way the diff pinion & TC shaft will be on the same relative plane & solve the problem.
But will Puma drivers will want to be getting around in 109's

Originally Posted by Flaps

That video is where me and my bro went mundaring power line track and my car defenently didn't behave as good as his but mind u it was extremely muddy when i was out there. At the 24 sec mark in the video is where i got stuck but i was going up not down but it doesn't quiet look the same its more rutted out at the moment. It could be that i haven't got muddies on my car most of the cars i went with couldn't get up there.

Muddies does obviously make a huge difference (and not all muddies are the same either) and remember that lower pressure in your tyres are not just for the beach.

That said, the clay on the powerlines track has a particularly high plasticity (increasing tendency to be slippery when wet) and you often get a very slick surface with a consistency of pottery clay that no muddie will be able to grip on, especially uphill through an obstacle.

Pat,

Definitely worth a day out if you ever have your Deefer in Perth. Most obstacles have one or two grades and an escape route, so vehicle damage can always be avoided. You’ll always get a couple of the Perth guys to come along if you post on here!

Tracks like that are what I like,I'm not interested in modded vehicles jumping up rocks. Pat

This Quote is from an email I got from CEO, Great Basin Rovers, Utah
Quote:
In my opinion, upgraded axle shafts/CV joints are strictly optional when running Truetracs. First Land Rover axles and CV joints are not as bad as many people think. Second, since a TT is a limited slip they do not stress out axle shafts nearly as much as fully locking differentials and they bias torque in a very smooth and controlled manner unlike a hard ratcheting type of system. CV joints don't like shock loads so if you are a finesse driver and run TT's you won't have much problem with them. Another advantage of TT's especially in 2 pinion Rover diffs is they are massively more durable. The lifespan of a Rover diff with traction control engaged is between 30 minutes and 1 hour! The pulsing literally starts to dissolve the two spider gears. If you have used traction control a lot and want to do a quick check on the condition of your diff is to drain the gear oil and pay attention to the color when it first comes out. If it is silver as I describe it, this is your spider gears returning to their elemental state!



Have I missed something here, are we talking 2 'spider gears' here as opposed to 4 ?


Deano

2 pinion?

its a 4 gear diff, 2 side gears and 2 spiders on a common cross pin, Same basic design as the first diff with about the same metalurgy as put in the model T by Henry Ford....

Hang about, you dont suppose they're just unloading more left over, surplus ford stuff?