Differential Supports

[Racing Mind]

Does anyone have these on their 7? I'd love to check them out if someone wouldn't mind showing off their car!

 

Cheers,

Joe

[rnr]

This is the brace on my Ultralite

http://farm8.staticflickr.com/7160/6810643331_cd3450976d.jpg

[Racing Mind]

Thanks! Anyone running supports of this variety?

 

http://www.westermann-motorsport.com/shop/images/product_images/popup_images/287_6.JPG

 

http://www.westermann-motorsport.com/shop/images/product_images/popup_images/287_5.jpg

[blubarisax]

I have the standard Caterham diff struts. They work great.

[Croc]

You need the extra diff struts in a CSR otherwise you will rip the diff out with the torque of the 2.3 Duratec. I had these installed:

http://www.caterhamparts.co.uk/product.php?id_product=4802

 

There is a LHS one as well. Sorry I do not have a photo and the car is 1.5 hours away right now. It does reduce the trunk space significantly but its not as if I am carrying a make up kit around with me.

 

For the CSR there are apparently 2 types of diff strut - race and road. You will need to find out which diff spec you have - centered mounting or that with offset mounting where the unequal spacers are used.

 

The advantage of using the Caterham struts over the other version you are consider is that they are plug and play with a CSR. Not sure what advantage the other form of strut offers you?

[Racing Mind]

Thanks, guys!

[blubarisax]

I have the Caterham diff struts in my SV. I was advised by MOG-Racing to use these over the adjustable ones.

[scannon]

I also have the Caterham struts on my SV. I can't tell any difference in the way the car drives but I don't worry about the 265 lb ft torque tearing things up any more.

[bsimon]

If you are a DIYer, I've got solid models of an adjustable strut assembly that fits the standard Caterham Dedion chassis. I'm sure that by changing the rod lengths it could be adapted to SV/CSR sizes. My assembly uses mounts that span part of the top tube as opposed to cutting into the damper tower like the MOG unit does.

 

The stock Caterham diff assembly is supported in a single plane from the seat back tube structure. They tear out quite easily with big power engines. The struts triangulate the diff windup moments to prevent this.

 

The downside is struts eat up your boot space. They leave insufficient space to stow side curtains in a C3 chassis.

[bsimon]

http://usa7s.com/vb/attachment.php?attachmentid=4856&stc=1&d=1362664741http://usa7s.com/vb/attachment.php?attachmentid=4857&stc=1&d=1362664920

[jimrankin]

This works for S2K's and is simple. I don't have any experience with other 7 types but the same basic idea should work with any IRS as there is usually a frame rail just in front of the diff and through bolts or tabs to attach to.

[Alaskossie]

Bob,

 

Do the bolts that hold your horizontal bracket to the rear crossmember coincide with the seat harness bolts/bolt holes? I assume they do....

 

Do you see any particular disadvantage associated with cutting into the rear shock tower covers to attach any of the commercially-available triangulated braces?

[jimrankin]

There are pictured of the dif brace in a thread titled "Ultralite impressions" on this site.

[JohnK]

Loren, Chuck, et ala.,

Do you think the Catreham-style brace would, first of all, work on an Ultralite, and would it be effective enough that you wouldn't have to fabricate a broader support structure at the front / shell diff mounting?

[bsimon]

Do the bolts that hold your horizontal bracket to the rear crossmember coincide with the seat harness bolts/bolt holes?

 

Yes they do. A crude analysis of using only the outer harness bolt mounting point proved less than stellar. Spreading the load between both harness bolts made a bit more sense.

 

The chassis harness bosses are threaded straight through as supplied by Arch Motors. The link bracket is bolted up from the bottom.

 

The shock tower mounting is probably ideal since the load vector would be perfectly triangulated out of the corner of the structure. I just didn't want to chop up my panels.