As someone else said, none of the issues mentjoned above have ever been a problem with my Detroit auto locker. Don't even know its there.
I wonder if they work better in constant 4WDs than in rear wheel drives?
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As someone else said, none of the issues mentjoned above have ever been a problem with my Detroit auto locker. Don't even know its there.
I wonder if they work better in constant 4WDs than in rear wheel drives?
As I keep saying, my experiences are with the old style Detroits, not the newer Soft Lockers.Quote:
Originally Posted by garrycol
AFAIK all production has been SL's for years now, what I drove were late eighties/early nineties versions in light weight, relatively high HP rear wheel drives.
I was mainly recounting what happened to explain that they do indeed lock under power, and not just in a straight line otherwise they would be useless in competition cars, if they didnt lock under power you'd be lighting up the inside wheel all the time while cornering and going no-where..
Yes, but the only reason it is locking under power is that you have sped up the inside wheel rotational speed to match the outer wheel rotational speed.
Actually you have applied enough force/torque/thrust/bias/yougettheidea, to get the mechanical engagement to actuate and lock the dogs, to lock the side gears, to lock the axles...once locked wheel speed is obviously at the same rotational speed, you've had to overcome the inertia of the springs and natural physics of the centre, to lock the dogs....its not actually about matching wheel speed, this happens when locked:)Quote:
Originally Posted by BigJon
Yep, different when you have three differentials in operation together, as the lose of traction, or extra force applied heads out at a loss, by spinning a front wheel...the one with the least traction, i.e. it takes the path of least resistance....there is more resistance in locking the rear locker as opposed to escaping out the front...with a rea wheel drive, it has no other path than to try spin the wheel with the least traction, which inturn makes the detroit do its thingQuote:
Originally Posted by rick130
Lock the centre diff on the other hand;)
Oh, some are a able to spin all 4 with 3 open diffs, but I'm yet to witness such a phenomenom:angel:
Saw it once.In a RRC, full RH lock, rev up & dump it. All4 going plus RH circles. 30 seconds later when all the oil flung away from the centre diff it blew the rear cover off the transfer due to shearing all the c-diff bolts and it expanding.
Please correct me if I'm wrong but a True Track acts as a locker providing both wheels are on the ground. Lift a wheel and it acts like a open diff with no drive to the wheel on the ground.
Is this correct?
cheers,
Terry
I'm assuming (maybe naievely) that a little bit of brake will rectify that problem and transfer the power to the wheel on the ground...if not, I need to rethink my plan:confused:Quote:
Originally Posted by TerryO
Yeah, that's what I'd guess would happen Matt, but not having driven a no-spin with 3 diffs myself....Quote:
Originally Posted by rovercare
more like an LSD, they transfer a % or the available torque.Quote:
Originally Posted by TerryO
IIRC the bias ratio is somewhere near 3.5-4.5:1
Tech and links to more tech on how they work in this thread http://www.aulro.com/afvb/technical-...ferential.html
Yep, that's why they work so well with TC.Quote:
Originally Posted by moorey
When Sam that started Outerlimits had TT's on his comp buggy with their TC system he reckoned it was as good 99% of the time as straight air lockers.