Turning Radius

[LeftRightSplit14]

why is my turning radius turned to crap when i engage my truck into 4wd? Its fine in 2wd, but when in 4wd, it shudders and clunks like the wheels are gonna fall off. is this anything to worry about?

 

[Wicked_Sludge]

dont engage 4wd on high traction surfaces such as wet pavement, gravel, and the like.

and some binding is normal under a full-lock turn even on slippery surfaces.

 

[legoms013]

the binding is result of the front and rear axles not spinning the sames speed when you crank the wheel over. The front wheels are rotating less than the rear wheels (i think, or other way around) because they are angled in a certain direction, where the rear wheels just follow a longer arc behind them. and the result is that both axles cant agree on a certain speed, when turning.

 

[metalmacguyver]

the binding is result of the front and rear axles not spinning the sames speed when you crank the wheel over. The front wheels are rotating less than the rear wheels (i think, or other way around) because they are angled in a certain direction, where the rear wheels just follow a longer arc behind them. and the result is that both axles cant agree on a certain speed, when turning.

Close. Its just the otherway around. Front is traveling further than the back.

 

[UrbanRedneckKid]

the binding is result of the front and rear axles not spinning the sames speed when you crank the wheel over. The front wheels are rotating less than the rear wheels (i think, or other way around) because they are angled in a certain direction, where the rear wheels just follow a longer arc behind them. and the result is that both axles cant agree on a certain speed, when turning.

I disagree...
The TTB turns tighter than the u-joint operating angle. It's the u-joints binding.

My truck does it, your truck does it, they all do it. I snap alot of axles/u-joints because of it,(tight technical trails).

The wheels really shouldn't be turns that far in 4wd, though it is minimized with slower speeds. Just watch your wheel speed and how tight you turn.

 

[Wicked_Sludge]

u-joint binding on a low-traction surface just results in the steering wheel rocking back and forth as the u-joints bind and release. this only occures under full or very near full steer lock.

turning on a high traction surface, even if not anywhere near full lock, will reasult in driveline binding as the front driveline tries to turn faster than the rear. our part-time t-cases dont allow this, so something has to slip. usually, the tires will scrub and the front end will bounce around...but sometimes a u-joint or axle shafts will grenade, rarely a transfer case failure occures.