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Discussion on Cossie understeer and Rear Beams (title edited

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Old Apr 29, 2007 | 08:25 PM
  #281  
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Originally Posted by kennyA
Hi

D Osbourne in Bromsgrove. (D.O.M.E)

I brought the axle over in the car along with the gearbox and picked it up a week or so later.

Big thanks to Dennis and to Bara.

Hi Marco

That rear diff mod was a big improvement.

And those diffs and gearbox, great.

Hi kenny

glad your happy i hope you kick some ass on track

these guys are ones of the best in the business no dowt

marco
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Old Apr 29, 2007 | 08:35 PM
  #282  
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Hi Marco

I still need some straight line speed. So next target is more power.

Let me see if I can post a pic of the car that beat me. (by 0.6 secs).

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Old Apr 29, 2007 | 08:38 PM
  #283  
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Originally Posted by marco polo
no mate Dome is in bromsgrove , dennis is a top bloke been in the cossie sceen for yrs normaly with the grpa /wrc cars
Ah yes, DOME, apologies, I have heard of them
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Old Apr 29, 2007 | 08:38 PM
  #284  
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i didn't think DOME were in Bromsgrove anymore? there's a japscrap tuning shop at there old workshop now...must have moved?
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Old Apr 29, 2007 | 08:39 PM
  #285  
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Anyway Martin, any more updates on life with your new setup?
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Old Apr 29, 2007 | 08:44 PM
  #286  
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oh yeah sorry that's what i meant to reply with

so far i've pushed it 'reasonably' hard and not had any issues handling wise at all.

it steers so well now, just goes around corners tight and without fuss. i haven't had any understeer of note at all.

i haven't had a chance to go mad yet..but i have pushed it to the point where it would have understeered before on the old setup, i'm glad to report it doesn't now.

you're more than welcome to come and have a go btw if your ever over this way?
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Old Apr 29, 2007 | 08:45 PM
  #287  
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all the good cars come from dome dont they sir

best 450 i ever spent
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Old Apr 29, 2007 | 08:51 PM
  #288  
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Originally Posted by BROM@ZOO
all the good cars come from dome dont they sir

best 450 i ever spent
they do sir your car was an gen ex works car





kenny

that bm looks pretty cool
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Old Apr 29, 2007 | 08:55 PM
  #289  
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Originally Posted by bud-weis
i didn't think DOME were in Bromsgrove anymore? there's a japscrap tuning shop at there old workshop now...must have moved?

he is still there he is the second from last unit with D.O.M.E writen on the door , he has sub let the other units to the jap tuning boys
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Old Apr 29, 2007 | 08:56 PM
  #290  
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Originally Posted by bud-weis
i haven't had a chance to go mad yet..but i have pushed it to the point where it would have understeered before on the old setup, i'm glad to report it doesn't now.

you're more than welcome to come and have a go btw if your ever over this way?
Whoo - that's a very tempting offer Martin - it's been a few years since I last saw your car - ( in fact I went home seeing 2 of them.. )
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Old Apr 29, 2007 | 09:00 PM
  #291  
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Originally Posted by Mike1
Originally Posted by bud-weis
i haven't had a chance to go mad yet..but i have pushed it to the point where it would have understeered before on the old setup, i'm glad to report it doesn't now.

you're more than welcome to come and have a go btw if your ever over this way?
Whoo - that's a very tempting offer Martin - it's been a few years since I last saw your car - ( in fact I went home seeing 2 of them.. )
eh? you've lost me
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Old Apr 29, 2007 | 09:05 PM
  #292  
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Originally Posted by bud-weis
eh? you've lost me
It was at Donnington when Jim used to own it - about 99/00 I think - I had a bit of concussion in the afternoon because of a bit of an accident
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Old Apr 29, 2007 | 09:06 PM
  #293  
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ahhhhh i see

the offer is there......providing you don't have an accident!!
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Old Apr 29, 2007 | 09:22 PM
  #294  
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Originally Posted by bud-weis
ahhhhh i see

the offer is there......providing you don't have an accident!!
It wasn't my fault - honest!

What's next on the agenda or are you pretty happy with the "feel" of the car now?
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Old Apr 29, 2007 | 10:27 PM
  #295  
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I meant to say "not my driving"....
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Old Oct 23, 2007 | 02:35 AM
  #296  
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Originally Posted by Mike Rainbird
It's sounding like the geomtery then, as mine is doing the opposite of what it "should" do if it was the centre VC. Will get this checked first and then go from there. Thanks for all your advice peeps! I will of course keep you posted .
What was the outcome then mike?
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Old Oct 23, 2007 | 07:20 AM
  #297  
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Geometry was a million miles out .
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Old Oct 23, 2007 | 07:55 AM
  #298  
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Wow! Havent seen this thread in ages!!! I must re-read.

Mike - those new top mounts you have produced - much point on a shonky sierra?

JJ
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Old Oct 23, 2007 | 08:06 AM
  #299  
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JJ,
Depends on whether or not you are able to achieve your target settings on your current set up. If not, then the top mounts allow fine adjustment that cannot be achieved any other way. This is because unlike the Jap style ones, these ones are adjustable in BOTH plains .

The main reason I want them is to be able to run 2° neg camber on the road, and then quickly adjust the setting to 3° on the track, as the excessive camber makes the front end too twitchy on the road. So having these and marking up the two different positions will enable me to quickly switch between the two at will .
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Old Oct 23, 2007 | 09:32 AM
  #300  
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Has to be one of the best threads on this forum, brilliant reading
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Old Oct 23, 2007 | 11:00 AM
  #301  
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Cool!
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Old Nov 18, 2007 | 10:00 PM
  #302  
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veryintersting thread indeed made good reading

my car has alot of mods rose jointed and adjustable everything spaprt from rear camber adjustment
dose any body know any web sites which show ou how to make your own,or some links to sites where i can maybe buy some

i dont need them but want them,thats the only angle i cant adjust and want to be able too

thanks

https://passionford.com/forum/viewto...315094#4315094
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Old Nov 18, 2007 | 10:04 PM
  #303  
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Originally Posted by purplemonster
veryintersting thread indeed made good reading

my car has alot of mods rose jointed and adjustable everything spaprt from rear camber adjustment
dose any body know any web sites which show ou how to make your own,or some links to sites where i can maybe buy some

i dont need them but want them,thats the only angle i cant adjust and want to be able too

thanks

https://passionford.com/forum/viewto...315094#4315094
I think it might show you in the Grp A manual but i cant say for sure as not got it here.
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Old Nov 19, 2007 | 01:27 AM
  #304  
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good read- lookng forward to gettin my beam mike, will arrange more in 2 weeks when i am home

Ad
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Old Sep 7, 2015 | 08:01 PM
  #305  
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I came across this very old, but very good thread about improving the handling of Cosworths. So let's revive it.


Last year I fitted a 6 degree beam to my 4x4 sapph and it has reduced the understeer on turn in massively. But the car still has quite a bit of understeer when exiting corners. I have the feeling that it is caused by the front having no lsd, causing the inside front wheel to loose traction. Does a front lsd cure the understeer at corner exit? I suppose the lsd shouldn't be too tight, as otherwise it will cause understeer on turn in?
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Old Oct 7, 2015 | 02:43 AM
  #306  
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Good topic..
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Old Oct 7, 2015 | 10:59 AM
  #307  
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I will need to read through the whole thread but Mike Rainbird really seems to know what he is saying.


I would also say that Understeer on track is often a technique issue and training from a good instructor will make a HUGE difference. We spend thousands on our cars and take very little tuition.


One of my friends had a 993 Turbo 4 911 and complained that he could not dial out the massive understeer. He was taken out by the instructor and he drove it without any understeer just showing him how to trail brake it in, when to settle the car and when to fully get back on it. He also showed him gentle left foot braking to keep the car on line.


Often a gentle lift will tighten the line and learning to dial in a small amount of steering to weight up the front suspension and then steer hard after makes a huge difference. There are many more advanced techniques that can be learned.
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Old Oct 7, 2015 | 11:43 AM
  #308  
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Not seen this thread before, but really useful!! Just wish I could afford all the parts to make it handle properly!!
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Old May 12, 2017 | 12:56 PM
  #309  
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Originally Posted by Marc sierra
I came across this very old, but very good thread about improving the handling of Cosworths. So let's revive it.


Last year I fitted a 6 degree beam to my 4x4 sapph and it has reduced the understeer on turn in massively. But the car still has quite a bit of understeer when exiting corners. I have the feeling that it is caused by the front having no lsd, causing the inside front wheel to loose traction. Does a front lsd cure the understeer at corner exit? I suppose the lsd shouldn't be too tight, as otherwise it will cause understeer on turn in?
It's quite a while back, but I came across this topic again. The understeer has been improved by fitting a thicker rear arb. At first I tried a 21 mm arb of a Scorpio (bug-eye) 24v, with rosejoints instead of the normal droplinks. But that actually made it oversteer quite strongly at one moment that I nearly lost it. So currently it has a 20 mm rear arb from a standard bug-eye Scorpio with standard droplinks.
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