Vehicle & Technical > Defender

Lift and the way to go !

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paul_humphreys:
My 110 is ok with the standard arms, but then again the front prop is longer than the rear one and it self-centres fine as well.

Paul

Eeyore:

--- Quote from: "Muddy" ---Props somtimes vibrate bad or not at all usualy luck of the draw i think. I would always fit new ujs when you fit the lift and then they will bed in to the new angles of the lift.
--- End quote ---


Thats not entirely the issue with lifts and props. An increase in the working angle of a UJ increases it's rate of wear (I was informed once it was about 5deg per order of magnitude of wear rate - although I've never actually mathed it out). Lifting increases the working angle (and it doesn't have to be by a lot either). What really punsishes UJs is realigning the diff nose by using castor correcting front arms (they drop the diff nose down), these can cause all manner of amusing wear effects on the prop UJs by increasing working angles again.

As a quick note, fitting a wide yolk prop makes NO difference to the rate of wear even if they can handle more torque before catastrophic failure (unlike what some purveyors will have you beleive). They also work to a greater angle before binding (a good way to grenade a yolk or UJ!).

Also, props vibrate for one reason only - a balance is out. Now the cause of imbalance can be due to imbalanced loading (or nonconcentric loading), or an inbalanced prop.

Now, back to castor correction. If I had the choice again, and because the lift affected my trucks handling, I would actually fit the caster corrected front swivels. Standard arms aren't that heavy compared to the rest of the axle and they are fairly tough in comparison to some on the market. For a host of metallurigal reasons I don't approve of reheated and bent standard radius arms (neither does the OEM). The swivels will address the castor issue without effecting the alignment of the diff and prop. It isolates the problem form other aspects of the vehicles mechanicals.

Just make sure, before you part with any money, that the solution you choose will address three simple questions:
1) What problem am I trying to solve?
2) Does this solution address the problem?
3) What is the impact of this solution on other related systems?

HTH
cheers
 8)
Eeyore

Muddy:
Eyore can i ask about the front swives?

re these from tomcat as fart of their castor correction 'package' or is it tomcat that cuts and re-weld the radius arm mounts on?

Thanks.

Eeyore:

--- Quote from: "Muddy" ---Eyore can i ask about the front swives?

re these from tomcat as fart of their castor correction 'package' or is it tomcat that cuts and re-weld the radius arm mounts on?

Thanks.
--- End quote ---


Good question, squire. I have no idea, but I'm intrigued to find out! If anyone else has any ideas (before I snaffle a peak at their website) I think we'd be gald to hear 'em!

cheers
 8)
Eeyore

Muddy:
Me and you both i'm off for a sneaky peak now but there parts list has been 'updated' for about 2 years now!  

Be warned tho the 'for sale' page is pretty danm addictive :shock:  :!:  :D

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