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Author Topic: The Omega; a funny old sod (geometry thread)  (Read 516 times)

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Webby the Bear

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The Omega; a funny old sod (geometry thread)
« on: 12 November 2019, 20:48:18 »

So the old dog is going in for a WIM setup in December. Iíve tried to do the alignment myself but Iíve got to admit defeat. Part of the issue is our works cheap alignment machine doesnít allow adjustments with the car jacked up like the WIM machine has (the Hunter set up I believe?)

Anyway thatís a side issue. It drives ok. Ish. But itís still not perfect. Iím no geometry expert but Iíd say itís very susceptible to tram lining. Iíve gone over all suspension and steering and renewed quite a few components. The only things that are old are the rear springs (approx. 6 years old) and front struts/springs. Iíve got a suspicion they may be original. Everything else is new.

Iíve spoken to Tony at WIM and he thinks itís a geometry issue and I hope heís right cos if not I may have to throw the towel in and get a Fiesta! 🤣🤣🤣🤣

Anyway to my actual question.... why is the omega such a sensitive sod with the geometry? I understand that thereís a lot of adjustments that can be made unlike ya standard shitty fiesta where only front toe is adjustable but it just seems to be overly sensitive. Your thoughts...
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Kevin Wood

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Re: The Omega; a funny old sod (geometry thread)
« Reply #1 on: 12 November 2019, 22:29:17 »

My view is that it's a compromise you face for having a relatively simple MacPherson strut suspension setup as opposed to a double wishbone. In addition, the Omega is wearing much wider rubber than was the norm when the original platform was designed, and that doesn't help matters. 
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biggriffin

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Re: The Omega; a funny old sod (geometry thread)
« Reply #2 on: 13 November 2019, 09:26:35 »

Don't need to jack car up, just get 8, 18" square pieces of steel, grease them up make 4 sandwich, then you have 4 skid/turntable plates.
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Re: The Omega; a funny old sod (geometry thread)
« Reply #3 on: 13 November 2019, 10:55:27 »

I've never had a car that is so sensitive to the alignment set up as the Omega  ::)  And you could really tell the difference when it was set up properly.  :y
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Nick W

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Re: The Omega; a funny old sod (geometry thread)
« Reply #4 on: 13 November 2019, 13:08:12 »

Don't need to jack car up, just get 8, 18" square pieces of steel, grease them up make 4 sandwich, then you have 4 skid/turntable plates.


a glossy magazine under each wheel works just as well.
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Re: The Omega; a funny old sod (geometry thread)
« Reply #5 on: 13 November 2019, 13:13:17 »

Don't need to jack car up, just get 8, 18" square pieces of steel, grease them up make 4 sandwich, then you have 4 skid/turntable plates.


a glossy magazine under each wheel works just as well.

But then Webby would ruin his copies of Jugs Monthly..
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Nick W

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Re: The Omega; a funny old sod (geometry thread)
« Reply #6 on: 13 November 2019, 13:51:56 »

Don't need to jack car up, just get 8, 18" square pieces of steel, grease them up make 4 sandwich, then you have 4 skid/turntable plates.


a glossy magazine under each wheel works just as well.

But then Webby would ruin his copies of Jugs Monthly..


there's three adjustments worth in a year. And if you replace all of the service/wear parts it won't need doing for ages - twice in the nine years I owned the car.
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Webby the Bear

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Re: The Omega; a funny old sod (geometry thread)
« Reply #7 on: 13 November 2019, 14:49:32 »

Jugs monthly 🤣🤣🤣🤣🤣🤣 though Iím more of a vase type of man  :P :P :P🤣🤣🤣

As said hopefully Tony will sort me out. If not the Auto trader will be calling me!
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Eboy.com

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Re: The Omega; a funny old sod (geometry thread)
« Reply #8 on: 13 November 2019, 16:56:10 »

Tramlining is also caused by shit tyres.  What are you using?
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Webby the Bear

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Re: The Omega; a funny old sod (geometry thread)
« Reply #9 on: 13 November 2019, 17:13:54 »

Four new kumhos. New as at a couple of months ago. No odd tyre wear on my old ones or the new tyres.

Other things ive changed are track rods and idler arm. Is it possible there are some joints from steering wheel down that could be iffy? Though I fear Iím clutching at straws here. As said hopefully Tony can sort it 👍👍👍👍👍

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Re: The Omega; a funny old sod (geometry thread)
« Reply #10 on: 13 November 2019, 17:16:03 »

You either have play, geo is out, or tyres a bit shite. Either are likely.

Is it tramlining from the front, or from the rear.  I'm having issues with the rear of TBE.
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Webby the Bear

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Re: The Omega; a funny old sod (geometry thread)
« Reply #11 on: 13 November 2019, 18:27:46 »

I canít say whether itís front or rear. When I say it tramlines I mean it pulls to road imperfections. And at speed (above 60) it just feels unstable and wandery.

When i popped up to see u the other day I drove mums fusion and besides the annoying rattle from her plastic door trims 🤣 it really was planted and I felt confident going fast.

Another way of describing it is Iíll be driving along at motorway speed and itíll all of a sudden feel like the cars been hit by a strong side wind, Iíll adjust steering and itíll settle down again. Until the next gust of wind feeling.

I know my description is shite 🤣 but itís the only way I can describe it.
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dave the builder

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Re: The Omega; a funny old sod (geometry thread)
« Reply #12 on: 13 November 2019, 18:34:00 »

Any up/down movement on the steering idler arm  :-\
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Webby the Bear

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Re: The Omega; a funny old sod (geometry thread)
« Reply #13 on: 13 November 2019, 18:39:37 »

No mate and itís brand new. Lemforder 👍
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dave the builder

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Re: The Omega; a funny old sod (geometry thread)
« Reply #14 on: 13 November 2019, 18:45:02 »

got the tyres the right way up ? ;D :D
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