QT Radius Arms

[Debacle]

I have a set of QT 3 degree double cranked trailing arms to put on my 1980 RRC which will have a 2 inch lift. I have put them on to the axle housing end and due to the different width at the axle mount end it looks like it's going to restrict down travel. It looks like I am going to have to get the angle grinder out and modify the mounts. The original mounts have a semi-circular recess to allow for the original tubular arms, but the QT arms are a bit wider and don't fit into the recess and wouldn't allow much travel at the axle end of the arm and put stress onto the chassis end of the arm.

Has anyone fitted these before ?

Can I grind away enough of the original mounts to make them work and still retain the strength of the mounts ?

[ptaplin]

Hi John,

I have QT cranked trailing arms on my 1997 Discovery. Looking at mine I have different axle mounts!

IMG_0417.jpg

I get loads of flex with mine, having to fit dislocation cones now.

This does not solve your issue, but you can see difference axle mounts.

Cheers,

Phil.

[LowRanger]

I have a set of QT 3 degree double cranked trailing arms to put on my 1980 RRC which will have a 2 inch lift. I have put them on to the axle housing end and due to the different width at the axle mount end it looks like it's going to restrict down travel. It looks like I am going to have to get the angle grinder out and modify the mounts. The original mounts have a semi-circular recess to allow for the original tubular arms, but the QT arms are a bit wider and don't fit into the recess and wouldn't allow much travel at the axle end of the arm and put stress onto the chassis end of the arm.

Has anyone fitted these before ?

Can I grind away enough of the original mounts to make them work and still retain the strength of the mounts ?

This is a common problem when fitting modified rear arms to both RRC and defender rear ends.Just requires that you remove the arms at the diff housing ends, and remove some of the metal with a grinder or similar,I have removed the metal up to the semi circular portion,all the way across.You will end up with more flex than you will need.

[uninformed]

seems odd that if they are made for a rover they dont fit a rover without getting the grinder out

[LowRanger]

seems odd that if they are made for a rover they dont fit a rover without getting the grinder out

The price you pay for uprating from 2 pieces of spaghetti that Rover call radius arms.

[uninformed]

The price you pay for uprating from 2 pieces of spaghetti that Rover call radius arms.

yes but im sure there are other brands of HD trailing arms that dont need grinding....

[LowRanger]

yes but im sure there are other brands of HD trailing arms that dont need grinding....

Yes I am sure that there are.Mine are a different brand and I could have left it without removing any material,and it still would have worked.But by removing the excess material,it allows a lot more movement of the arm,and in turn increases the available flex.
It is a matter of the diameter of the arm being increased over the piddly standard LandRover size.

[Grimace]

QT 3 degree double cranked trailing arms

QT can be confusing at times... 3 degree... rear trailing arms... lol.

p.s. just grind out a bit of material from the top of the mount as LowRanger suggest.

[bush ranger]

G'day, is it just me or does anyone else think Land Rover put those brackets on upside down in the first place and never got around to correcting it? Cheers, Bush Ranger.