race suspension
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race suspension
hey everyone 
i wonder what suggestions on the suspension setup for a track car you people can give me. starting point is a standard 4wd esc cos, lightened to the max and purely used on racetracks. theres so many different setups and rear suspensions that i dont know what to use anymore
cheers
i wonder what suggestions on the suspension setup for a track car you people can give me. starting point is a standard 4wd esc cos, lightened to the max and purely used on racetracks. theres so many different setups and rear suspensions that i dont know what to use anymore
cheers
Guest
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kennyA
fiberglass : hood, bootlid, fenders front and rear, doors, wrc front spoiler, rear spoiler
perspex : windows all round except windscreen
interior : stripped all tar mats and sound proofing (more or less 30 kilos), removed original seats, removed heater, removed carpets, removed console and door cards, .... (basically everything removed thats not necessary in race environement or replaced by light motorsport counterpart)
fuel tank : replaced by cell
etc, etc, etc,..... i think i might get down to 1'000kg when done
buildup pics might follow....
fiberglass : hood, bootlid, fenders front and rear, doors, wrc front spoiler, rear spoiler
perspex : windows all round except windscreen
interior : stripped all tar mats and sound proofing (more or less 30 kilos), removed original seats, removed heater, removed carpets, removed console and door cards, .... (basically everything removed thats not necessary in race environement or replaced by light motorsport counterpart)
fuel tank : replaced by cell
etc, etc, etc,..... i think i might get down to 1'000kg when done
buildup pics might follow....
Trending Topics
1. What sort of racing will it be, for pleasure or serious competition?
2. What sort of tyres will be on it?
3. Is the car suspension rose-jointed or bushed?
4. Did you want the suspension rose jointed or bushed?
Due to the light weight of the car, you can actually go a lot softer than you would expect, as normal Escorts are carrying 3-400kg extra weight if you get down to your 1000kg target
.
2. What sort of tyres will be on it?
3. Is the car suspension rose-jointed or bushed?
4. Did you want the suspension rose jointed or bushed?
Due to the light weight of the car, you can actually go a lot softer than you would expect, as normal Escorts are carrying 3-400kg extra weight if you get down to your 1000kg target
.
Too many posts.. I need a life!!
Joined: Aug 2004
Posts: 740
Likes: 0
From: Dresden
lightweight
EsCosRacer
sounds like you've done a fair bit of work. It's a pig of a job removing all that tar with the hot air gun, but your right, almost 30Kg.
I have almost the same set up as you as you except the plastic doors. They are almost £200 each!!!
If you like I'll stick some photos on here.
Let me know your corner weights if you have them.
Mike
Serious part, lets say for arguments sake that the corner weights were;
(1100Kg is more realistic than 1000Kg)
F-L 325Kg F-R 325Kg
R-L 225Kg R-R 225Kg
Tas top mounts
All rose jointed, Leda Coilovers
2.5ID 7" front springs
2.25ID 7" rear springs
serious competition - tarmac only.
Avon 230-620x17 Slicks
what factors would you use to calculate a spring rate?
400-500Lb front? and 250-350Lb rear?
Who do you know races an Escort cosworth? All I have to go on is the rally set up in the GpA, GpN manuals.
Maths, Geometry, camber, castor, bump steer etc, etc, are all welcome. Anyone else reading this can throw in their bit.
Should we move this to the tech section?
Kenny.
sounds like you've done a fair bit of work. It's a pig of a job removing all that tar with the hot air gun, but your right, almost 30Kg.
I have almost the same set up as you as you except the plastic doors. They are almost £200 each!!!
If you like I'll stick some photos on here.
Let me know your corner weights if you have them.
Mike
Serious part, lets say for arguments sake that the corner weights were;
(1100Kg is more realistic than 1000Kg)
F-L 325Kg F-R 325Kg
R-L 225Kg R-R 225Kg
Tas top mounts
All rose jointed, Leda Coilovers
2.5ID 7" front springs
2.25ID 7" rear springs
serious competition - tarmac only.
Avon 230-620x17 Slicks
what factors would you use to calculate a spring rate?
400-500Lb front? and 250-350Lb rear?
Who do you know races an Escort cosworth? All I have to go on is the rally set up in the GpA, GpN manuals.
Maths, Geometry, camber, castor, bump steer etc, etc, are all welcome. Anyone else reading this can throw in their bit.
Should we move this to the tech section?
Kenny.
Kenny,
I would say no more than 350lb on the front and 150lb on the rear. However, I run anti-roll bars, so if you were to remove these and run compression struts, then you would need to compensate on harder springs. However, I would try the spring rates I have quited, because given your 300Kg lower weight than my own car, you might find them surprisingly good.
As you're doing short sprints, try 3° negative camber all round and a small amount of toe-in (0'20") for stability.
I would say no more than 350lb on the front and 150lb on the rear. However, I run anti-roll bars, so if you were to remove these and run compression struts, then you would need to compensate on harder springs. However, I would try the spring rates I have quited, because given your 300Kg lower weight than my own car, you might find them surprisingly good.
As you're doing short sprints, try 3° negative camber all round and a small amount of toe-in (0'20") for stability.
Too many posts.. I need a life!!
Joined: Aug 2004
Posts: 740
Likes: 0
From: Dresden
lightweight
EsCosRacer
Apologies for jumping in here, one guy actually runs an Escos in the german hillclimb ch'shp over here. I've seen his car and it weighs 1030Kg.
Basically the car is empty (1seat, no dash etc) with everything plastic.
I'd be really interested to find if you managed to reach 1000Kg. remember corner weights.
Mike
On a car weighing only 1000Kg, would you still go for 8" springs as I have at the mo or go for a 7". If I reduce the spring length should the damper travel not also be adjusted to suit?
Some photos.
This is a friends car.
Kenny
Apologies for jumping in here, one guy actually runs an Escos in the german hillclimb ch'shp over here. I've seen his car and it weighs 1030Kg.
Basically the car is empty (1seat, no dash etc) with everything plastic.
I'd be really interested to find if you managed to reach 1000Kg. remember corner weights.
Mike
On a car weighing only 1000Kg, would you still go for 8" springs as I have at the mo or go for a 7". If I reduce the spring length should the damper travel not also be adjusted to suit?
Some photos.
This is a friends car.
Kenny
Kenny,
You'd need to confirm with John at LEDA, but I believe the dampers will be able to accomodate a 1" increase.
As you probably know, we will be at the Ring at Easter, so try and make it and you can see what you think to my suspension set up
.
You'd need to confirm with John at LEDA, but I believe the dampers will be able to accomodate a 1" increase.
As you probably know, we will be at the Ring at Easter, so try and make it and you can see what you think to my suspension set up
.
Guest
Posts: n/a
Kenny
thanks for the pics. always interesting to see how others build their cars (yayaya....dont we all steal ideas sometimes ).
I would love to post pics of mine but it has not been painted yet and looks terrible... Poor lil cossie has been standing near a river for 3 yrs so it looks awful. still i am amazed that it hasnt rusted at all, only the sills seem to have a bit surface rust to them, thats all (common spot on escorts?)
As far as my setup goes i will do the following (after measuring corner weights when car is done):
LEDA or Bilstein Coilover
adj. lower track control arm
poly bushes front n rear
nylon steering bushes
aluminum beam mounts rear
aluminum diff mount rear
I have to say im tempted to go for bilstein, their pss9 or whatever they called it proved to be the best on my 996 turbos and GT2s. Hockenheim and Nürburgring were fantastic to drive with that setup.
So thats the parts i will use for the preliminary testing, i know theres a lot more parts (rear axle, etc.) but i have to start somewhere
Im in switzerland Kenny and all we got here are group a escorts, havent seen a real wrc car around....
Mike
thanks for your input. compression struts ? still havent decided if the anti roll bar in the front is to be eliminated or not. can u give advice ?
thanks for the pics. always interesting to see how others build their cars (yayaya....dont we all steal ideas sometimes
).I would love to post pics of mine but it has not been painted yet and looks terrible... Poor lil cossie has been standing near a river for 3 yrs so it looks awful. still i am amazed that it hasnt rusted at all, only the sills seem to have a bit surface rust to them, thats all (common spot on escorts?)
As far as my setup goes i will do the following (after measuring corner weights when car is done):
LEDA or Bilstein Coilover
adj. lower track control arm
poly bushes front n rear
nylon steering bushes
aluminum beam mounts rear
aluminum diff mount rear
I have to say im tempted to go for bilstein, their pss9 or whatever they called it proved to be the best on my 996 turbos and GT2s. Hockenheim and Nürburgring were fantastic to drive with that setup.
So thats the parts i will use for the preliminary testing, i know theres a lot more parts (rear axle, etc.) but i have to start somewhere
Im in switzerland Kenny and all we got here are group a escorts, havent seen a real wrc car around....
Mike
thanks for your input. compression struts ? still havent decided if the anti roll bar in the front is to be eliminated or not. can u give advice ?
Originally Posted by Gregs
what you got on your car mike?
Mike,
I have no direct experience of compression struts, and I personally wouldn't ever get rid of my anti-roll bar.
If you want the full low-down of my car, then look here:
https://passionford.com/forum/viewto...128432&start=0
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