Rear anti roll bar adjustment

[Paul Oggelsby]

Morning all,

I would like to adjust the rear anti roll bar one setting to stiffen it up. Can someone point me in the direction of instructions to complete this please or explain how it's done?

420R SV.

thanks

Paul

[Jonathan Kay]

From the Assembly Guide:

Figure 129: Anti-roll bar connections 

1. Bolt
2. Plain washer
3. Extension piece 
4. Drop link
5. Anti-roll bar 

NOTE
Droplink assembly and connections shown rotated through 180° for clarity.

9.12) Anti-roll bar connection and adjustment 

Shorten the droplinks as much as possible ensuring the threaded ends face in the same direction. Tighten locknuts. Remove the nuts from the ends and discard, apply Loctite to the threaded arm of the droplink and screw into the extension piece using washer (15), refer to Fig 133. Pass the threaded portion of the lower droplink through the anti-roll bar and secure with nyloc nut (fastener pack 30R011A Item 9). 

The position of the droplinks in the anti-roll bar determines the degree of the anti-roll given. Positioning the droplinks closer to the pivot (at the cotton reel bushes) will give more roll resistance. The same position must be set both LH and RH. 

The rearmost hole is the softest and forward most hole is the stiffest position. 

...

 

If you'd like a copy please send me a Private Message with your email address and details of the Seven.

But that only tells you how to select a setting, not which setting to select...

Previous discussions.

Jonathan

[Paul Oggelsby]

Brilliant thanks Jonathan, got the Assembly Guide, very helpful.

[Geoff Brown]

You can start from the hole farthest forward, go for a drive & experience how the car handles. Beware it could be interesting. I ended up with the second hole in from the rear on my R400. The back end follows well without too much drama . It just depends on what you want & the tyres/suspension fitted.

[22daz]

Also bear in mind that they can be staggered by one hole to give you a finer adjustment between the 4 settings. 

[ChrisC]

Also item 3 is no longer fitted. 

[Jonathan Kay]

Thanks.

The note I posted in #2 above was from "Version 02.2015c". 

Have you got something more recent, please?

Jonathan

[ChrisC]

I have nothing more recent than 02.2015c for Duratec cars. it's just no longer fitted and the drop link is moved to the other side.  I had a photo sent to me during my 2016 build, but it is shown in 1.2 of the new manual. 

[David White]

Jonathan,

Page 115 of the current Assembly Guide Edition 1.2 refers.

Regards

 

[Jonathan Kay]

Page 115 of the current Assembly Guide Edition 1.2 refers

Is that a traditional text-heavy version or the new pictorial style? My 1.2 pictorial only goes up to 100...

Thanks

Jonathan

[ChrisC]

Try this one 

https://cms.caterhamcars.com/wp-content/uploads/2019/06/A4%20Assembly%20Guide_Edition%201.2_Spreads.pdf

[Jonathan Kay]

Thanks.

PDF isn't paginated correctly!

This picture?

Jonathan

[ChrisC]

Look where the rear brake caliper is fitted

[Jonathan Kay]

Jonathan

PS: They're going to need a lot of pressure on that gun to inject silicon!

[Geoff Brown]

Without 'item three' (spacer) it appears that the drop link will be at an angle so surely this will change the effectiveness of the link & change the deflection angle as the original fitment with item three allows for a near vertical position?

[David White]

Rotating the bottom of the link such that the top and bottom point in opposite directions seems to eliminate the need for the spacer.  Unfortunately iIdon't have a clear photo from my build.