TDS on CAT SX

[Oliv996]

Do you think it could be a good tuning option?

I sought in my old CAT2000 spare parts a it seems some TDS parts could take place onto CAT SX with minor mods

[mw02veg]

myself n my dad haave suggested this to the big man(phil) wen we first got our cat at the euros he said he would look into this matter on our previous ride we found it extremly useful. but running the car with a diff and removing the pin on the layshaft makes it fell very similar just with out the adjustment

[MattW]

I think it would be a cool idea - which is why i too asked for it to be looked at as an option. Hopefully at some point something will happen.

Personally i'm not so bothered about the TDS slipper (for the rear on cat 2000) but the ABS on the front would be very useful IMHO.

[Oliv996]

Oh yes Matt, I write TDS but I was thinking about ABS: the tuning center oneway on the front

Tomorrow I will try to mod some parts

[ulrich]

Originally Posted by Oliv996

Oh yes Matt, I write TDS but I was thinking about ABS: the tuning center oneway on the front

Tomorrow I will try to mod some parts

Please post photos when it is ready.. adjustable one-way could be nice..

Ulrich

[CharlieF]

Hi Ulrich.
Nice to see you are still interested in developments for the Schumacher car. Great pics of the scene in your country! It was good to see the photos of you and your wife and kids.
Regards
Charlie.

[mole2k]

I loved the ABS in my cat3k!

[MattW]

Oliv, Let me know how that goes - as i'd be very interested. I did look at the bits to work out if one could be fitted - as i had an old ABS unit laying around in an old box!!

[Oliv996]

Matt, here it is

It requires some hand made parts and some mods on the oneway pulley, nevertheless the ABS plate can be use without any mod and location of the pin in the shaft is perfect

[Rich D]

Very clever

[Oliv996]

After ajustements on few parts, the sub-assembly looks like this:





Exploded views:






Parts I have made:

First PTFE shim


Second PTFE shim


Second ABS plate


The pushing ring:



Modified parts:

The CAT SX front shaft where I put a headless screw and where I drilled a 1.5mm hole for the second pin


First ABS plate (coming from CAT2000 or CAT3000 ABS option)


The CAT SX oneway pulley, flattened on both side:




Part taken as is:

The ABS spring (coming from CAT2000 or CAT3000 ABS option):

[Chrislong]

I like the look of this a lot! Excellent work!!!

Am I right in thinking, it'll only function with a diff in the front. The one way diff will roll forward and cancel the benefits of this TDS?

Which leads me to next idea, how about a friction assembly within the one way diff? There's a challenge, as im guessing there is not enough room.

[MattW]

Chris, Yes it's an adjustable centre one way unit. So you have a diff in the front, and can adjust how much "one way action" you get from the centre. Allows you to have it tight enough to be able to get on the breaks, while not completely locking the front end up while it corners.

Oliv, work looks great well done with that. I had been trying to work out yesterday how you would sort a layshaft!!! now i see.

[DCM]

PATENT IT

[Oliv996]

Originally Posted by Chrislong

I like the look of this a lot! Excellent work!!!

Thanks Chris

Originally Posted by Chrislong

Am I right in thinking, it'll only function with a diff in the front. The one way diff will roll forward and cancel the benefits of this TDS?

Absolutely right !

Originally Posted by Chrislong

Which leads me to next idea, how about a friction assembly within the one way diff? There's a challenge, as im guessing there is not enough room.

It was my first dream for the X-5: a tunable oneway
And I think it could be possible to introduce friction material between outdrives and pulley. The main issue is having enough place to put a spring or belleville washers inside outdrives

[Oliv996]

Originally Posted by DCM

PATENT IT

I can't, because it has been already released by Schumacher as option for CAT2000...

[super__dan]

LEGEND!

[Oliv996]

Originally Posted by super__dan

LEGEND!

100% ?

Thanks my old mate

[Oliv996]

Here is the ABS system installed on the CAT SX:

[super__dan]

Batter than factory???

Does it work exactly like the xx4 clicker i.e. locked on acceleration but variable 'slip' on brakes?

Olivier are you coming to the Petit race?