it's for the pinion angle................next weak link.peter henry
OK.At the moment the driveshaft is dead in line with the pinion on the present arms and factory uppers. Would I be correct in saying then that as time goes on and the springs sag then the top would need to be adjustable to keep this alignment correct?
For all this we have spoke of only the front, I am guessing the same applies to the rear axle and mounts? The mounts on the D44 I would asume to be stronger than that of the D30 (Probably incorrectly) and should not need the same amount of reinforcement?CheersClayt
Cheers PeterSorry to keep picking yours and everybodies brain but how do I adjust the axle to suit the pinion under flex? My thoughts may be incorrect but is it because the drive shaft can run out of linear travel, probably not the correct term to describe what I am thinking but I mean the drive shaft can not extend or retract enough? Please correct me if completely wrong.As far as the rear goes, if the lowers were johnny jointed and the axle triangulated does that solve all the issues with the rear?I have had another thought. Been looking at the Johnny joints and am wondering how they can be effective when bolted in between two solid bits of metal! They have 30 degress movement but as the joint pertrudes only slightly from the case and is then bolted between two bits of metal larger than the caseing, that is going to stop/restrict movement to the point the metal case will foul the inside of the mount, or is this restricted movement enough for suspension travel and the unused johnny joint movement an added bonus?CheersClayt
Quote from: "isle of man"it's for the pinion angle................next weak link.peter henryOK.At the moment the driveshaft is dead in line with the pinion on the present arms and factory uppers. Would I be correct in saying then that as time goes on and the springs sag then the top would need to be adjustable to keep this alignment correct?For all this we have spoke of only the front, I am guessing the same applies to the rear axle and mounts? The mounts on the D44 I would asume to be stronger than that of the D30 (Probably incorrectly) and should not need the same amount of reinforcement?CheersClayt :roll: Unfortunately its not quite that simple because rotating the axle also effects your pinion angle. The front pinion should ideally be 1 degree above parallel (IIRC).Both the pinion angle and the caster angle cannot both be correct in a lifted Jeep so a comprimise is required. Unless you have an opportunity to change the axle geometry (which you just missed) it is accepted procedure to re-introduce as much caster as you can until the prop starts to vibrate and then back it off an odd degree. As the front prop is so long on a Wrangler and already has a double-cardan at the TC end it is quite tolerant of mis-alignment.The rear contol arm mounts are no stronger than the fronts but having diddy springs back there means that it cant flex as much as the front therefore putting less stress on the mounts.Adjustable arms in the rear allows you to dial your pinion angle in and you have no geometry issues back there. However you do have a very short prop, no double-cardan joint and a weak-as-you-like slip yolk so a slip yolk eliminator kit is very recommended.The correct angle at the back with a std prop is to have both UJs at identical angles.A Johnny joint casing does not foul the mounting bracket at full swivel.Mik
Cheers Peter and MikMmmm triangulation does look expensive but I was hoping I could bribe Warthog into lending me his expertise at some point in the future.
the shocks on the front are no problem the rear is another story........peter henry
I am begining to get that sinking feeling.......You know when you have bitten more of than you can chew :-k
