All great things have a beginning

[Paul_13]

I can recommend meister r coilovers

[Paul_13]

My friend owns Kam Racing and is able to supply these with custom springs

[Grant Monkhouse]

Cheers guys. Just looked at how much corner scales are.... Not buying any of those

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[Grant Monkhouse]

My friend owns Kam Racing and is able to supply these with custom springs

Nice one. Will bear it in mind when I get closer to needing them thanks

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[Jamie R]

Cheers guys. Just looked at how much corner scales are.... Not buying any of those

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There are companies that loan them out. I won’t be buying them either lol


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[boosted]

Ideally you want bottom wishbones flat 180degress to road and lower body. There are some adj camber top wishbones to geometry correct a lower car....
And maybe soften springs are thicker arbs to sort the handling.

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[Paul_13]

I'm running yellow dot rx8 arb's and it's got a bit of understeer

[Paul_13]

Rx8 Arb's are a direct fit

[Casey]

Cheers guys. Just looked at how much corner scales are.... Not buying any of those

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There are companies that loan them out. I won’t be buying them either lol


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Here's a cheap way to do corner weighting (all credit Peter Hewson, ex RX-8 OC member and is an engineer at McLaren)

I'm a cheapscate, and cannot justify spending the hundreds of pounds to buy proper corner weight scales. But, fortunately, it is just about possible to weight an 8 using bathroom scales! You need eight scales, which can be bought for about £4 each from Tesco or Argos. You have to use four scales under each wheel, since each scale can only take about 110kg, and each corner of the car could register around 350kg. You also need to allow plenty of overhead, because each scale will register quite different loads (unless you have perfectly flat ground, and you get the wheel perfectly central, which you won't). You must weigh each axle in turn, front axle then rear. Don't try to measure an individual wheel with just four scales, because the "cross-axle articulation" will give you a totally false reading.

After you have gently dropped the front (or rear) of the car onto the eight scales simply add together the four measurements for the left wheel, then add together the four measurements for the right wheel, and you will end up with the corner masses.

Reading the scale that sits underneath the car can be tricky, but I found that using a mirror worked well. You just have to angle it until the parallax lines pointer are in line, then read the mirrored numbers.

Note that the method isn't brilliantly accurate, but with care you should get within a few kilos. Also note that you won't be able to get individual corner weights from this method because how ever careful you are you will always have some cross-axle articulation present. But you should get a pretty good total car mass, fairly accurate front to rear distribution, and fairly good left to right distribution. And all for about £40. Bargain.

[re japi]

Well, getting corner weights right, only accurate measuring would be with good corner weights scales.

Everything affects everything. Lets say that put weigh on rear right corner, scales would show that mass increases in other corners too

Heres pics from my bros FB. First, without driver. Second with driver. However, when you put driver in, you have to modify some weights position cause then corner weights would be off...

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[boosted]

Jarno whats happening with Jnykis( soz if wrong) fb..been quiet for on the FB rally x for awhile?

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[clive]

Problem with corner weighting is how to move the weight around, but there are solutions.

On a sensible note, I now my mate Steve has like a cantilever bar that you pick the corner of the car up by hooking into the wheel.
No idea what you would call it but I would say its cheaper than as set of scales     

[re japi]

Jarno whats happening with Jnykis( soz if wrong) fb..been quiet for on the FB rally x for awhile?

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He doing is brakes again. Bike brakes to every corner...

And after he put launch control rev limiter on, car wont start...

But he hasnt done much to car lately. Has bigger motivation problems than I have

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[Grant Monkhouse]

I'm running yellow dot rx8 arb's and it's got a bit of understeer

Would that mean that it is too hard then?

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[Paul_13]

On the front yes. I would stick with mx5 ARB but go for rx8 rear