Help! - C hub droop setting

[Dave Treacy]

My other Xray's are the standard EVO II, pre-FOC versions.

I've now got my grubby little paws on a nice new Xray Factory, and this runs the C-hub variant, not the pivot ball system I'm accustomed to. My problem is that the setup book is the standard EVO II one - pivot ball...

Where do you measure the droop and what should it be on a C-hub Xray (preferably the factory version, but I imagine the setting is the same for the FOC C-hub version)?
Thanks

Dave

[cbcbcb]

I've never used a droop gauge, but the set up book shows the droop being measured under the C hub. The initial setting is 3mm. I'm looking at the T1 Raycer set up book which you should be able to download from MyTSN.

I set the droop to be as large as possible without allowing the springs any free movement on shocks. I sometimes also reduce the droop at the front by a quarter turn on the droop screws. (indoor on carpet)

I've found that reducing the droop more than this tends to make the car less predictable - it seems to handle better, but the car just seems to park itself for no reason...

[Petermarkphillips]

Droop is a very handy setup feature, changing the amount both the front and rear of the car can pitch up in the corner, ie controlling the amount of body roll.

At the front measure the droop from the bottom of the screw through the chub, the lowest point on front suspension.

At the rear measure to the flat surface around the grub screw hole, again the lowest part of the suspension.

When you have a setting of 0mm droop means the points being measured are level with the bottom of the chassis.
+numbers of droop mean they are above chassis line, and negative means below.
System works the same on all touring cars I know of. However places were droop is measured varies between different manufacturer.

[Dave Treacy]

Thanks guys. I've downloaded the T1R setup guide and that has the method for setting droop on C-hubs.

Should be sorted tonight... I was reaching the point of taking the shocks off of my TC3 and using them instead!

Dave

[Petermarkphillips]

Why? that wouldn't help at all, it uses droop screws too.

[ldebackker]

is droop the same as downstops? only touring car I ever owned is a T1 Raycer and in the Xray book they are talking about downstops but droop isn't mentioned.

[Petermarkphillips]

is droop the same as downstops? only touring car I ever owned is a T1 Raycer and in the Xray book they are talking about downstops but droop isn't mentioned.

Droop is the name used by other car manufacturer's for downstops.
I think some of us start talking about droop instead because we've used the word with other people with different cars etc

[university_dave]

Droop, downstops, downtravel, it's all the same.

Have a search for Ben Cosgrove's settings as they are bang on...

Also, if you want to measure droop without having to take the wheels off then simply measure he ride height and then lift the car up off the ground. Then gently lower it until the wheels just touch and measure the ride height again. That will give you an actual measurement of downtravel.

[Petermarkphillips]

Droop, downstops, downtravel, it's all the same.

Have a search for Ben Cosgrove's settings as they are bang on...

Also, if you want to measure droop without having to take the wheels off then simply measure he ride height and then lift the car up off the ground. Then gently lower it until the wheels just touch and measure the ride height again. That will give you an actual measurement of downtravel.

following on from your idea another way to measure it without the need for a special droop gauge is to take wheels off set car on a flat surface, and measure with a ride height gauge the space between reference points and surface.