Red Devil mkII - The Journey Continues

[seangti]

I am running full negative camber which is around -3 or more for street, im going to get another alignment done soon, will be interesting to compare notes

Do you know how much corner weighting is ?

Not actually sure on price, I didn't ask... a mate had his set-up done for $350, which was alignment, height, weighting and dampening I believe.

[h100vw]

Not actually sure on price, I didn't ask... a mate had his set-up done for $350, which was alignment, height, weighting and dampening I believe.

Will you strip it out for the corner weighting?

Gavin

[team_v]

Will you strip it out for the corner weighting?

Gavin

Would you need to allow for extra driver weight when setting it up as well?
I.e. setting up the car empty would be great but then you add an extra 70-80kg of driver which can throw off the balance somewhat.

[vwthunder]

I know a place here in Melbourne that hires out the scales

I might do DIY

[seangti]

Sorry for the delay, I'm on holiday I've pulled out the rear seats so it's close to track weight. They were actually lighter than I'd expected. Have left the seat base as that's just foam, and I didn't have time before going away and get back tomorrow night to drop the car off Monday morning.

I'll ask about driver weight when I drop the car off and see what he thinks. I'm dubious as to how much effect this would have for the average punter, it all counts but whether it's tangible to lap times. Will be interesting to get the corner weight measurements and corner heights to better understand the dynamics.

Troy, I was going to DIY, but after reading up further on it, along with being time poor, it'd be best to know how much one turn corresponds to weight movement. So lots of jacking up, turning, dropping, measuring. A professional with the right tools and knowledge will do it in a fraction of the time while I can relax, and know its done right.

[39erman]

I am running full negative camber which is around -3 or more for street, im going to get another alignment done soon, will be interesting to compare notes

Do you know how much corner weighting is ?

I pay $300 to have the car corner weighted, ride height adjustment & wheel aligned. We drop the car off and pick it up later in the day.

Remember that castor is as important as camber. Can toe out and -ve camber be achieved in the rear thru bushings?

[39erman]

Would you need to allow for extra driver weight when setting it up as well?
I.e. setting up the car empty would be great but then you add an extra 70-80kg of driver which can throw off the balance somewhat.

Absolutely. Like the stablisers, you dont want to load the car up with the driver AFTER you've done your setup...

[seangti]

Can toe out and -ve camber be achieved in the rear thru bushings?

Yes, can be done with some whiteline shims. The car has them though I believe it's toe only, though they could have camber adjustment but I don't think so.

[seangti]

oki doki, the car as been sorted. Kmac tops are in. -2.6 degrees on left, -2.2deg on right. All my local tracks are right handers, so makes sense. I forgot to ask about the castor. The car now drives straight, so better than before. The Kmac tops will make some noises kind of like the spring binding as they don't have bearings in them like the factory stuff.

The car now has a 65/35 (f/r) balance. Ride height looks a little funny with a higher rear to front. Though looks comes second to handling. Have only driven straight down the highway to work so no idea how it'll behave. Will keep that for the race track.

Now that's pretty much everything I wanted to sort on the car at the moment, it's running well, the exhaust seems to have quietened down to a reasonable level since Jimmy had it, perhaps the loose turbo bolts or flange had something to do with that. I have looked into changing the rear muffler over, though allowing for it be interchanged, so quiet muffler for road and swap it to the current free flowing one when at the track. I'm now happy and amping to get to the track and drive it like it's been built to be

[team_v]

Glad it's all starting to get sorted out.
When is the next track outting?

[seangti]

Glad it's all starting to get sorted out.
When is the next track outting?

Timeattack at Lakeside on 11th October.

[39erman]

The Kmac tops will make some noises kind of like the spring binding as they don't have bearings in them like the factory stuff.

The car now has a 65/35 (f/r) balance. Ride height looks a little funny with a higher rear to front. Though looks comes second to handling.

Rake, it's called rake. Most race cars have rake except maybe F1 and some cars where the rear can't have a decent ride height due to geometry problems from the manufacturer. Rake aids in aerodynamics to create more down force at the front.

To keep your settings avoid pot holes, gutters and general wheel banging as this will change the geometry setup when travelling to and from events.

The springs should not rattle around. The camber tops will hold the spring in place by either a poly style bushing or a spring top retainer. Make sure that the shocks shaft is done up all the way and that the shock shaft nut does not protrude away from the base of the camber top when the wheel is on the ground. If it does, simply pack it up with washers under the camber tops, this is a normal practice.

Now enjoy and play with those tyre pressures. Ask your tyre supplier about starting pressures....

[seangti]

The springs should not rattle around. The camber tops will hold the spring in place by either a poly style bushing or a spring top retainer. Make sure that the shocks shaft is done up all the way and that the shock shaft nut does not protrude away from the base of the camber top when the wheel is on the ground. If it does, simply pack it up with washers under the camber tops, this is a normal practice.

Now enjoy and play with those tyre pressures. Ask your tyre supplier about starting pressures....

Thanks again, always welcome input.

I could have better explained the kmac tops. Whereas the factory tops have the strut top bearing to allow the spring to rotate against the mount, the kmacs don't use a bearing or poly bush. It's a metal to metal contact which allows for rotation in a pillow ball joint arrangement, inherit in it's design makes some binding like noise at that point. It's not the spring to mount binding noise. It's not an issue, Ken at Accurate Suspension mentioned it, and yup, a little metal to metal contact noise on turning.

RE Rake - yup, knew there was a better word. Having done some more research yesterday, I'd say having rake on a FWD car will also improve power down out of corner due to weight transfer. Obviously this can be offset by too much camber. It felt a little grippier under throttle yesterday.

RE tyres, I've probably only got another couple of events on the current semi-slicks and will probably than go for the yoko AD08R as a single street and track tyre. It than puts me in the street class for timeattack.

[grandturismo]

Red Devil mkII - The Journey Continues

Great update. Glad you found Ken helpful and competitively priced.

Street class is where it's at mate, then I may have some competition

Re: your comment about improving power down out of the corner. Ken also recommended some firmer springs in the rear, he's trying to move me into a 750lb replacement for my current KW.

[VWindahouse]

Great update Sean can't wait to see the lap times tumble!