Vehicle & Technical > Series Land Rovers

high angle prop

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lobster:
just wondering.....has anyone ever tried 'shaving' their propshaft's yokes to give better clearance (therefore higher angles),  so it resembles one of those high angle ones (gon2far or scorpian r.)

after a 4" lift on my SWB, im having a few prop troubles as u can imagine.didnt fancy spending 165 quid (each) on new high angle props

datalas:
Personally I would be very cautious, they are the size and shape they are for a reason and if you could get away with making them out of less metal then they probably would be (accountants run the world after all)

is a "hight" angle specifically what you're after?  I would have thought that a double jointed (the name fails me at the moment) one would be more suited.

Range Rover Blues:
If it's a series SWB then you want wide-angle UJs, the Cardan joint is usefull for coil-sprung vehicles as a suspension lift causes the front axle to roll forewards (also changing the castor) so that the UJ angles do not match.  Castor correcting arms then make matters worse.

muddyweb:

--- Quote from: "Range Rover Blues" ---usefull for coil-sprung vehicles as a suspension lift causes the front axle to roll forewards (also changing the castor) so that the UJ angles do not match.  Castor correcting arms then make matters worse.
--- End quote ---


um... you sure about that ?

The castor correction brings the diff nose back down and increases the drive angle of the bottom UJ.   In order for the prop to work properly, the drive flanges should be parallel, and the castor correction gets the diff flange closer to this state.   When you lift a vehicle, as you mention, the diff nose turns upwards making the flange move further away from parallel.

What castor correction arms will do is effectively extend the distance between the flanges, which can cause issues with additional strain on the UJs if the slip joint is near its limit.

For a double-cardon prop to work well, the lower UJ needs to be within a couple of degrees of 'straight'.. and in this case, the castor correction arms can be a disadvantage.


Just so we don't *completely* hijack the thread ;-)    I wouldn't recommend grinding away the flanges / shaft.   You can get wide angle yokes and their construction is a little different.  You risk weakening a standard one as Datalas says.

Thrasher:
If anyone is brave enough to want to try this - I have a *spare* Catted V8 front prop - it's nothing like a diesel one, and I do not suffer the problems others have.

They are expensive (nigh on £400 from LR!), so I'll lend it to someone to see if they are also a solution.

P.S. It needs a UJ changing (they are *also* more expensive :( )

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