Not a great shot and not particularly bling coz everything is waxoyled and practical

you can see the avo's and I've had the rear brake hoses extended in flexible rather than have a solid piece on the arm.



Still haven't managed to make it understeer through roundabouts yet though

 

 

Hoo Hoo, no understeer!!!!

How are the Avo's Paul??

 

thats cause it aint got the power to!

 

Lewis, stop nit-picking, thats next year

Kev, they're very good. I've been playing around with the damper settings, although last night on 10 clicks on the rear and full soft on the front it felt like i had egg shaped wheels Five Clicks on the rear and full soft felt good this morning. Haven't wound them up full hard yet. Having MO's really helps as you just put your hand through the spokes and twiddle the dial, oooerrrr!

They don't crash around either which is what i was expecting. SPring rates are 375 on front and 170 on rear.

So far can't fault them

 

Had a good ganders round all the bits that were lead over everywhere @ zoo & all looked very impressive! even though i didnt have a clue what I was lookin @!

is this the same thing as shonky is puttin on his escort!? if so looked well bling on the bench! was gunna ask 1 for mine but then remembered my car drives the wrong wheels!

 

I think I may get a set of them!! Well, put em on the list anyway!!

 

I would have thought Sean would have already had one, but i know its been off the road for the last century so he may have never got round to it.

Kev - do it!

 

nbah it wasnt on the ca\r lol! there wasnt a lot on the car lol!

it was on the bench more or lesss finsihed! I think it miht b diffeent to yours, is yours tubular shit!?

 

No, he must be doing something even more bling

 

paul,


get some copper grease or something ALL over the threads on the shocks


trust me, learn by my mistake

 

oh yes!

some mad tubular thing looked its a lot lighter than the standrad unit & a fook load stronger!

He started to get techincal with me so I apppliedthe old trick of smile & nod!

 

CheeRS dude, will do when i'm next under there.

 

 

lewis keep ya nose out my development stuff plz pics will be posted when finished

 

soz m8!

Did u get my PM the other day about my rear brakes!? or u just ognoring me!

 

How does a rear beam stop understeer ?

Looking kewl tho

 

paul,did you have any problems with shock body rubbing against car body?

 

passenger rear on all cossies rubs with coilovers

 

Not sure on the exact science Steve, but I think its due to allowing the wheel to move in a more vertical axis rather than the usual tramp/arc which reduces the contact area of the tyre. I'm sure somone will have a better explaination involving bump steer etc

Yes, passenger side has been tickled but i think i need to do the same on the drivers side to hammer time

 

spiky, i dont think all coilovers rub, just avo's! not too sure tho.

 

Its the spring that rubs, so I think if you have coilovers with 2.5" springs they will probably rub.

 

Looks good Paul - will get some pics of mine when I get it..........

 

Understeer is front wheels mate, not getting grip and going on in corners when you are turning in, the rear wheels have nothing to do with this.

If you have more grip on the back due to the beem, then you will get more understeer than before if you were getting it before...

Changing the rear beem surely can't affect how the front wheels behave on the road....unless i am totally misunderstanding it.

 

Dingy,

I'm sure it can.

Ignoring static camber etc, under load, the increased tyre contact patch must help the front end round...........

 

I can't explain it from a angles perspective, I'm afraid you'll have to go on my version of the arse dyno .

Before the beam i only had the adjustable tcas and these made a very good improvement on the turn in, but when i went into a corner especially a roundabout, the front would turn in nicely but the rear would not know what to do, and(maybe through a shift in weight at the rear) the rear would lift and want to carry on straigh and the car would then start to "drift" wide.

Now with the beam(and admittedly coilovers plus corner weighting) it stays a lot flatter and the rear "tucks in more" and follows the front.

Hard to explain but maybe the above will make some sense

 

Sure it can...

So you take a cossie, crap grip and it understeers, fit somert that makes it grip's more and it corrects this, even if you have not touched the front end which as i understand it, if the front doesn't grip it understeers.

I know for a fact in my own car when i ran slicks on the back and not on the front, the understeer was terrible......swapped wheels and oversteer was terrible.

Regardless of what the beem does to wheels, in theory, if you increase cornering grip at the back, you create understeer / reduce oversteer to the front

 

Didn't realise you have had coil overs fitted to, that might explain the understeer as the beem as little to nothing to do with how the front turns in as far as i am aware.

So u had some cambre put in too then ? (with adjustable TCA's)

Unless its forced oversteer RWD style

Think this might have everything to do with understeer correction and not the rear beem.

 

Yeah, but Dingy, from my karting days, increasing rear end grip through track or tyre pressure adjustment used to make the kart handle BETTER with less understeer.

The principles are the same...........

 

Dingy/Rich, I think it is more than just a grip issue............

Dingy, I understand where your coming from on the above and would agree..........but afraid I cannot explain the angles theory. Will have a think about it driving home

 

Paul,

Unlitmately, it's all about grip, because there are only four things attaching the car to the road.

 

I get what you are saying but the fact you have had the front setup and coilovers setup/fitted really makes your first post a bit misleading as you aint run rear beem and not had front done so you don't know that its that that has fixed the understeer.

Not trying to have a dig either, trying to understand why more grip on rear aids front end grip, there is other theories about taking away lateral grip over forward grip, this should dial out some understeer, but will reduce the lateral grip.....all in theory tho.....if the car drives well then it drives well, which is the only thing that matters

 

the rear roll rate will have changed dramatically with the different spring and damper rates. as the front is (or should be!) connected to the rear via the unitary body construction, this can have a major affect on the front suspension genometry during cornering, which could be why understeer appears to have reduced.

the different angles of the trailing arms can also have contributed to the degree of camber, toe and castor of the rear wheels when cornering, maybe giving a more positive 'rear steer' effect that helps the car turn in.

 

That makes sense mate, just didn't really understand it.

Do more so now, but topic needs changing LOL had FULL suspension and geometry setup by zoo and they fixed my understeer

 

ForeignRS pretty much said what I couldn't One of the purposes of the beam is to be able to fully adjust the rear angles.

 

Yeah Ding, the beam does help turn in and front end grip as our foreign friend has stated.

When a standard beam-ed cossie turns into (lets say) a right hand corner, as the car rolls into the corner the geometry of a standard cossie rear beam, actually makes the outside wheel (left hand wheel) steer right as well. Therefore fighting the front and pushing the front on.

The rear beam virtually eliminates this compression steering effect and allows the rears to simply follow the fronts and not fight against them. We also set up the rear with less toe in to aid turn in. This can get hairy though as not enough rear toe in will produce a very twitchy car.

 

 

Looking nice mate, had a look under your 500 yesterday at A1

Sean, been reading up on cambre for rear wheels, reads interesting, kinda didn't get it cause mine is fixed LOL but am a lot clearer now, wasn't trying to be a kunt just trying to get my head round it.

 

I know mate, no worries, was just trying to clarify it a bit. The thing I found is that although all of the authors agree on basic principles, there is a lot of difference in interpretation and fine tuning between different books. I guess that is where personal feel and seat of the pants stuff comes into play. I really like the fact that suspension and geometry is such a grey area, there deffo seems to be more than one opinion on skinning the cat, so to speak.