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Non-Cattle Specific Topics
Every Thing Else Board
4 wheel drive questions
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<blockquote data-quote="wbvs58" data-source="post: 1154545" data-attributes="member: 16453"><p>The problem with using 4wd on hard surfaces is that you get a differential in distance travelled between the front and rear axle when turning tight corners and consequently get this "windup" that can't be released because of the grip the tires have on the road. It has nothing to do with the difference in travel between the inside wheel and outside wheel on the same axle, the differential will equalise that, that is unless you have a diff lock engaged as well.</p><p>All wheel drive vehicles have a 3rd differential on the drive shaft between the front and rear axle to release this windup.</p><p>I have found with accidental engaging 4wd, driving on highways with relatively straight roads and gradual bends there is little problem however if manoevering around tight turns like roundabouts some very large forces will develop and it is very easy to do a lot of damage. It is obvious though, steering becomes very heavy and a lot of power is needed to continue going forward so if you use common sense when driving and don't force things you will usually circumvent problems.</p><p>Ken</p></blockquote><p></p>
[QUOTE="wbvs58, post: 1154545, member: 16453"] The problem with using 4wd on hard surfaces is that you get a differential in distance travelled between the front and rear axle when turning tight corners and consequently get this "windup" that can't be released because of the grip the tires have on the road. It has nothing to do with the difference in travel between the inside wheel and outside wheel on the same axle, the differential will equalise that, that is unless you have a diff lock engaged as well. All wheel drive vehicles have a 3rd differential on the drive shaft between the front and rear axle to release this windup. I have found with accidental engaging 4wd, driving on highways with relatively straight roads and gradual bends there is little problem however if manoevering around tight turns like roundabouts some very large forces will develop and it is very easy to do a lot of damage. It is obvious though, steering becomes very heavy and a lot of power is needed to continue going forward so if you use common sense when driving and don't force things you will usually circumvent problems. Ken [/QUOTE]
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