Track car ride height

[Leslie Graham]

Hi all, I have a Ph1 172 for track only that is extremely well lightened. This obviously has left the chassis riding higher than before. I'm running 15's with 888's.
What would be a good recommended (based on experience) height between arch and tyre back and front.
Many thanks in advance

 

[barnesautos]

The only one I have . My motor has some forward rake to it .
Helps a lot with turn in.

Are you running platforms at the back ?

 

[Leslie Graham]

Was originally, I removed them to lower it more and she's still about 40mm between tyre and arch. Was thinking of full rear coilovers.
Car is physically as light as I can get it and she's lifted quite a bit. Need to get her back down

 

[barnesautos]

Was originally, I removed them to lower it more and she's still about 40mm between tyre and arch. Was thinking of full rear coilovers.
Car is physically as light as I can get it and she's lifted quite a bit. Need to get her back down

What springs you using ?

Can you see I have a 6mm gap to lower the platform still .

I think maybe a full strut coil over would be your best option , as you'll have more adjustment , only issue I see with running a full coilover is that the body weight sits on the shock and puts extra stress on that point .

 

[Leslie Graham]

Can't identify springs bud unfortunately.
Don't follow with the 6mm gap, can you elaborate?
Honestly can't believe how much she's lifted. Must get it weighed!

 

[Leslie Graham]

Need to come down for a little more corner speed, bit much higher roll for my liking...
See below

 

[barnesautos]

Can't identify springs bud unfortunately.
Don't follow with the 6mm gap, can you elaborate?
Honestly can't believe how much she's lifted. Must get it weighed!

Where the adjuster sits under the spring , so I still got a few turns left to lower it down before it stops . So the height you see in my first pic could come down a little further .

I'm running a FG boot lid and spoiler , stripped out , loom has been on a full diet ect

 

[Leslie Graham]

I've actually removed adjusters altogether to get down as much as possible and still high. Can these rear axles be pre loaded?

 

[barnesautos]

How do you mean ?
Pre-loaded .
As in if shorter shocks were fitted and it pulled down the height ?

 

[Leslie Graham]

Most people fit suspension parts without realising that they need preloaded.
Tightening all flexible joints with the car in the air instead of preloaded joints by jacking axle to support weight of chassis under load then tightening. Makes huge difference

 

[Chambers_RS]

Most people fit suspension parts without realising that they need preloaded.
Tightening all flexible joints with the car in the air instead of preloaded joints by jacking axle to support weight of chassis under load then tightening. Makes huge difference

Agree with this massively

 

[Leslie Graham]

Agree with this massively

Ah, sense at last!
Thought it was only me!

 

[barnesautos]

Most people fit suspension parts without realising that they need preloaded.
Tightening all flexible joints with the car in the air instead of preloaded joints by jacking axle to support weight of chassis under load then tightening. Makes huge difference

I miss understood , but I know exactly what you mean now .

When I do my suspension tightening , it's loosened off first then retightened whilst the car is on those drive up ramps.

 

[bozothenutter]

Need to come down for a little more corner speed, bit much higher roll for my liking...
See below

car will probably roll about the same when lowered due to roll centre issues (suspension arms pointing upwards, putting roll centre below the car/asphalt) so lowering it will decrease roll, but the displaced rollcentre will counter that.. @NorthloopCup does something nice for this......

 

[Leslie Graham]

car will probably roll about the same when lowered due to roll centre issues (suspension arms pointing upwards, putting roll centre below the car/asphalt) so lowering it will decrease roll, but the displaced rollcentre will counter that.. @NorthloopCup does something nice for this......

Care to elaborate on 'something nice'
Curious...

 

[green]

Roll centre correction hubs like the cup race cars but with normal Clio172 hubs.

There maybe a groupe buy at the mo

 

[bozothenutter]

http://www.cliosport.net/threads/roll-centre-bump-steer-corrector-hubs.717989/page-34#post-11317110

 

[JB21]

Is it my eyes or does your steering wheel wobble about in your hands in the above video?

 

[Leslie Graham]

It was

Is it my eyes or does your steering wheel wobble about in your hands in the above video?

in that video, little tightening when i got in. All good, 1 loose bolt

 

[Chambers_RS]

Care to elaborate on 'something nice'
Curious...

I would defo invest in the Marks hubs well worth the cash.

I run them with PMS bearing arms and the handling is spot on.

You sound a bit like me, anal about handling rather than Power hungry figure chasing!

 

[Leslie Graham]

I would defo invest in the Marks hubs well worth the cash.

I run them with PMS bearing arms and the handling is spot on.

You sound a bit like me, anal about handling rather than Power hungry figure chasing!

Pretty much bud. Power to weight is my personal vice. Still amazes me people spend huge chasing bhp when the car is still 'fat'

 

[NorthloopCup]

They're not designed (my hubs) to run with standard dampers/lowering springs as there's too much travel, so it will stress the rose joints and bottom them out.

Coilovers only.

 

[Cub.]

Pretty much bud. Power to weight is my personal vice. Still amazes me people spend huge chasing bhp when the car is still 'fat'

Horses for courses.

I don't want to drive to and from tracks / Le Mans / Ring rattling my fillings out and making myself deaf for the sake of 40kgs.

250bhp and 1020 kg or so does me fine.

For what it's worth, I'm running Marks hubs, ASTs on custom rates and with a bit of rake and decent tyres it goes round bendy bits pretty well in my opinion

 

[chris blue]

Pretty much bud. Power to weight is my personal vice. Still amazes me people spend huge chasing bhp when the car is still 'fat'

And then take a 12 stone passenger round the track!

 

[Leslie Graham]

And then take a 12 stone passenger round the track!

No passengers, single seat.

 

[Cub.]

Lol.

Are you building a race car to race?

Or a car to have fun on track in?

Quite a few comments in here reek of "track hero" status.

Trackdays are a bit of fun, not racing on the cheap.

 

[bloke]

No passengers, single seat.

if i was pedantic i'd point out that the pic in your avatar...:tonguewink:

 

[Leslie Graham]

Old pic.
Track car only, just a bit of fun with time on my hands to fettle with it so may as well make it as good as I can.
Track hero? No, just trying to improve each time. I race Autograss where weight etc is all important so I relay that to track toy too. Best of both worlds and a non road car so anything goes.
Track lets you fettle to apply elsewhere.

 

[Digger90]

Honestly, I just don't get why some people feel the need to criticise what others want to do... If he wants to take a track day/fun toy to the limit... why the heck not??

Go for it Leslie. I think this is an interesting project.

 

[Leslie Graham]

Honestly, I just don't get why some people feel the need to criticise what others want to do... If he wants to take a track day/fun toy to the limit... why the heck not??

Go for it Leslie. I think this is an interesting project.

Cheers bud. Genuinely appreciate it.
I always think by fettling and trying to improve you learn more and can apply it elsewhere. New ideas, new tools, new skills.
I don't have a build thread but will try and get a walk through up.

 

[Cub.]

Honestly, I just don't get why some people feel the need to criticise what others want to do... If he wants to take a track day/fun toy to the limit... why the heck not??

Go for it Leslie. I think this is an interesting project.

Largely because he and others feel the need to criticise those who don't strip their "fun toy" to the limit and spend "huge" on a "fat car".

Don't give it out, if you don't like it back again.

I did say horses for courses! Personally people can do what they want, but don't then assume it's what everyone else should do.

 

[Leslie Graham]

Largely because he and others feel the need to criticise those who don't strip their "fun toy" to the limit and spend "huge" on a "fat car".

Don't give it out, if you don't like it back again.

I did say horses for courses! Personally people can do what they want, but don't then assume it's what everyone else should do.

Fair enough, each to their own I guess

 

[Phase1LAD]

View attachment 1313270

The only one I have . My motor has some forward rake to it .
Helps a lot with turn in.

Are you running platforms at the back ?

Hey buddy sorry to jump on an old post but I’ve lowered my car like this at the front and I’m getting bad vibrations from the near hand side when cornering right and I thought it could be the fact it’s lowered too much and the drive shafts are binding slightly when I turn so did you have any issues at all lowering yours really low? Thanks