Don't you understand that removing a drive shaft is exactly the same as having zero traction?
How much load is on the engine in that situation?
It's a pretty simple concept.
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Don't you understand that removing a drive shaft is exactly the same as having zero traction?
Did you?
But it's not about rotational speed, it's about torque. The Toyota document only talks about torque. ...
How many times does it mention speed difference? If there is no speed difference it's a complected paper weight, the more rotational speed difference = more limited slip action, assuming it's properly working.
How much load is on the engine in that situation?
It's a pretty simple concept.
Exactly the load that the engine would see if the front tires were on ice, or one tire was in the air. Exactly the situation you might want torque to transfer to the other axle in.How much load is on the engine in that situation?
It's a pretty simple concept.
Exactly the load that the engine would see if the front tires were on ice, or one tire was in the air. Exactly the situation you might want torque to transfer to the other axle in.
The VC does not split speed!
It splits torque. If you remove your front drive shaft, just because you see the zero-load front shaft spinning doesn't mean there's enough torque being generated to even overcome the static friction of the drive line.
The point is that your 'proof' that the VC doesn't work is invalid. You're not demonstrating what you think you're demonstrating.
While I'd prefer that you stick with it until you understand, I'll take this.Wow. I give up.
Wow. I give up.
@jpoole ( OP), I assume you have made your mind up about purchasing a new VC and seen the price? My advice if your VC is toast then bin it or use it as a conversational door stop and fit CDL button, as you enter an area of 'iffy' traction press the button.........job done!
Regards
Dave
what are the symptoms of a locked VC?
Lot's of good info here even if a bit of a misunderstanding arose. VCs are in a lot of vehicles so I'd guess that there is some good info on them out in the web should questions remain. From what I understand at this point the 80 series VC is weak in comparison to VCs in other implementations that must lock up more strongly when rotational differences are present.
You folks and the info/discussions on this site are one of the main reasons that 80s are great.
Most limited slip differentials have a “torque bias” ratio. The ratio of how much load on the slipping side (say 1) to how much load it can transfer (bias) to the side with traction (say 3). That’s what separates them from lockers, they still need some traction on slipping side to work. I assume the VC has similar limitations and thus the front drive shaft removed is not a valid test.
I spent lots of time with the original Jeep Quadratrac (with clutches as a limited slip) and in a pickup with the full time open center diff NP203. I have witnessed 1 wheel drive with the NP203, being stuck on wet ice on a LEVEL parking lot. Never had that problem with Quadratrac, did get clutch chatter on tight parking lot turns.
I removed mine due to peer pressure