MOTORCYCLE

> platypus wrote:
>
>> Ace wrote:
>>> On Thu, 28 Jun 2007 11:38:52 GMT, platypus
>>> wrote:
>>>
>>>> Ace wrote:
>>>>> On Thu, 28 Jun 2007 04:09:17 -0700, darsy
>>>>> wrote:
>>>
>>>>>> The Jeep has several drive modes, but only recommends 2wd or
>>>>>> permanent 4wd for road use - part-time 4WD is for loose
>>>>>> surfaces only. Ive no idea why - Krusty probably does, mind.
>>>>>
>>>>> So do I. Its because your 4wd system is much more mechanical
>>>>> than mine, such that the front and rear wheels will want to
>>>>> move at the same speed all the time, so going round corners
>>>>> will be much more of an effort, as youre effectively skidding
>>>>> at least one of the rear tyres round to follow the front. Tyre
>>>>> wear will be accordingly increased.
>>>>
>>>> Err, diffs?
>>>
>>> They work between left and right side, but on vehicles with
>>> selectable 4wd like darsys jeep, there is no diff between front
>>> and rear.
>>
>> Are they allow to make them that crap? He wants a proper 4x4, he
>> does.
>
> Hes got one - Ace is wrong. You can get Cherokees with two types of
> transfer case - SelecTrac which has a centre diff allowing full-time
> 4WD, & CommandTrac which which hasnt got a diff & just locks the
> driveshafts together, hence can only be used in 4WD on slippery
> surfaces.