Rake & Dampening on Track

[Greeny.]

I was always under the impression that having abit of rake was the best option but that is purely based on reading up on here in the past, however if that’s the case why do the Mk2 Cup Racers have their rear ends so low? Honestly just interested more than anything. At present my front end is currently 10mm lower than the rear, I can get 5mm off the rear if I remove the shim, just need to check the rear spring doesn’t fall out when it’s jacked up, this is on BC BR Coilovers.

Also what’s everyone’s opinion dampening wise front/rear, I generally set everything to full hard, purely because I don’t know any better if im honest although its never 'caused' me an issue, not that and I dont know any better.

Ta,
Dan

 

[EVO 4LEX]

I was always under the impression that having abit of rake was the best option but that is purely based on reading up on here in the past, however if that’s the case why do the Mk2 Cup Racers have their rear ends so low? Honestly just interested more than anything. At present my front end is currently 10mm lower than the rear, I can get 5mm off the rear if I remove the shim, just need to check the rear spring doesn’t fall out when it’s jacked up, this is on BC BR Coilovers.

Also what’s everyone’s opinion dampening wise front/rear, I generally set everything to full hard, purely because I don’t know any better if im honest although its never 'caused' me an issue, not that and I dont know any better.

Ta,
Dan

Are you measuring that height difference at the sill front and rear or from the arch’s through the centre of the wheel to the ground?

Some rake will help turn in and make the car rotate but too much rake will make the rear end very lively! Depends how you want it to feel..

 

[Greeny.]

Are you measuring that height difference at the sill front and rear or from the arch’s through the centre of the wheel to the ground?

Some rake will help turn in and make the car rotate but too much rake will make the rear end very lively! Depends how you want it to feel..

I measured through the centre of the wheel.

Would a 10mm difference down to a 5mm difference be that noticeable?

 

[NorthloopCup]

I ran 0 rake on my old cup. Never noticed any adverse effects on handling whatsoever

 

[EVO 4LEX]

I measured through the centre of the wheel.

Would a 10mm difference down to a 5mm difference be that noticeable?

Mine is 10mm higher on the front than the back but if you measure from the sill there is still rake so yours must have loads! For reference I have just removed my bc brs to replace with AST’s and used to run them without that rear shim with no problems

 

[Greeny.]

Mine is 10mm higher on the front than the back but if you measure from the sill there is still rake so yours must have loads! For reference I have just removed my bc brs to replace with AST’s and used to run them without that rear shim with no problems

Good info thanks mate, yeh mine must have alot then, my front end is already fairly low I would say, I asume you didnt have any issues with the rear springs falling out?

How you finding the upgrade to AST's? Amazing I would imagine being the price difference between them!

 

[PhillipM]

A little rake is usually just to stop underbody lift, and it gives a little more weight transfer at the rear, it's fine tuning basically. Also depends where you're sat in the travel available front to rear.

As for dampening, well, I don't think you need the suspension wet, but as for the damping settings - full hard is generally never the way to go, if your dampers are well matched to the springs you should be close at mid-way settings and then adjust out from there. Winding the adjusters all the way in is a recipe for just having a twitchy car that lacks grip through transistions generally.