Quantum's

[Mike Scib]

Looking for new suspension for my VX and have been thinking about Quantum's after reading nothing but excellent reports.

My question is, should I be looking at Quantum Black series with rebound adjustment as they seem more track focused or will the standard Quantum's Zeros with maybe track springs fitted be fine?

The car is used on both road and track all year round and will probably always run AD08's tyres.

http://www.eliseparts.com/products/show ... o-dampers/
http://www.eliseparts.com/products/show ... e-dampers/

[Scuffers]

two comments.

the range was revised a while back, they are all called Zero's now.

this also means that a non-adjustable one can be upgraded for 0ne/two ways at a later date.

also, with the one ways, the adjuster is both bump/rebound.

HTH

[Mike Scib]

two comments.

the range was revised a while back, they are all called Zero's now.

this also means that a non-adjustable one can be upgraded for 0ne/two ways at a later date.

also, with the one ways, the adjuster is both bump/rebound.

HTH

Cheers, still say Blacks on the EP site.

Any idea on costs to upgrade at a later date?

So what is the advantage of the one ways over the standard Zero's bar the adjustment? Excuse my ignorance. Guessing the very fact I am asking that question the standard one will be fine for me.

[Scuffers]

two comments.

the range was revised a while back, they are all called Zero's now.

this also means that a non-adjustable one can be upgraded for 0ne/two ways at a later date.

also, with the one ways, the adjuster is both bump/rebound.

HTH

Cheers, still say Blacks on the EP site.

Any idea on costs to upgrade at a later date?

So what is the advantage of the one ways over the standard Zero's bar the adjustment? Excuse my ignorance. Guessing the very fact I am asking that question the standard one will be fine for me.

don't quote me on this but I believe your looking at about £150 each

advantages - you can't adjust the non-adjustables are fixed valving aimed at predominantly road use with (relatively) low rate springs, them!

being less factious, think of them as a sportly road car damper than can deal with light trackday work, the limits are around spring rates and associated ride heights.

so, unless your predominately track driving, the non-adjustables will be your best bet.

[Mike Scib]

The car will be doing Frolics next year plus a few track days down south as well as the SIDC days but I suppose it all depends on how many road miles it will do. It is a second car so only used for fun.

So I should go for the track spring at least then?

Car is a Supercharged VX220, not an Elise if that makes any difference, as said it will probably remain on AD08's tyres.

[Scuffers]

yes, I would go with the highest rate they do with the non-adjustable (it's a variable rate spring).

it's more to do with how you drive/use the car than the milage per say, the one thing I will say though is DO NOT try to run it slamed to the ground, they just do not work like that.

[campbell]

Interesting and timely conversation. My S1 runs on S2-type Bilsteins, entirely std. Perfect and quite fabulous for the road. But a bit soft for track days. Mulling over something a bit sharper for the future, in view of increasing proportion of track time vs road use.

Must not compromise ride quality.

S2 LSS always felt a bit hard. How might one achieve something half way between the two?

One suggestion was simply adding an adjustable ARB to dial out a bit of roll.

[Scuffers]

OK, (and sorry if this comes across as sales pitch!)

the orriginal Zero's were designed to replace Bilsteins, (specifically the old LSS ones), but to get away from the 'crashiness' of them whilst still maintaining a 'sportier' feel.

or in simpler terms, they are slightly stiffer on initial movements/low speed, but on mid-speed (damper not road), they are more progressive and not as abrupt - so, when you hit a bump in the road, they will not crash into it, but give to allow the wheels to follow the bump.

what you end up with is a slightly stiffer feel (what Lotus would call 'sporty') but without the harshness and crashiness of the Bilsteins.

Obviously, I think these are the best thing since sliced bread - but more seriously, they are, (when used with their variable rate springs) the best ride for a road car out there, (it's also worth pointing out that they are better in this respect than the single/two ways as their valveing is more track orientated).

they are fine for track use, just consider the limitations of the spring rates and do not try and run the car too low, (specifically Toyota cars and XV's) they simply do not work like that (and by low I mean <~130mm for a toyota/VX).

[BigD]

OK, (and sorry if this comes across as sales pitch!)

So do you sell them? Group buy price?

Something I'll be looking at in the near future too and also want to keep road manners and some track use. The standard S2 Billies on mine are pretty good and don't seem that soft on track (but maybe that's because I'm coming from a 4 door saloon to Elise). Although I thought my car had halved in 2 when I hit a bump on the Malaig road recently.

Campbell, adjustable front arb was one of my thoughts too to help with body roll whilst keeping good road softness.

[campbell]

Thanks, Simon, for the insight.

Plenty to think about. A forthcoming trip to Cadwell, at which I'll still be on the current std setup, will be an interesting research opportunity.

TBH never been concerned about the setup before, on various tracks like Knockhill, Oulton, Spa, Donington, etc. But Robin complained that the mudflaps were acting as bumpstops when the car was on sabbatical with him and Ross for Spazz, so thought I'd look into the matter

[Scuffers]

OK, (and sorry if this comes across as sales pitch!)

So do you sell them? Group buy price?

Something I'll be looking at in the near future too and also want to keep road manners and some track use. The standard S2 Billies on mine are pretty good and don't seem that soft on track (but maybe that's because I'm coming from a 4 door saloon to Elise). Although I thought my car had halved in 2 when I hit a bump on the Malaig road recently.

Campbell, adjustable front arb was one of my thoughts too to help with body roll whilst keeping good road softness.

nope, I am not a salesman for EP.

(if you want to try and group buy, mail Geary direct, but I suspect you will need a lot of you to get anything like a significant discount, the margins on Quantums are very small).

ARB wise, yes, forgot to mention that, so far as I can tell, there is no downside to a stiff ARB, and to be blunt, the 1" is the minimum I would go with. On paper, at some point if you go too stiff, on the road it will start to affect ride etc as it will transfer the bumps across the car, but in practice, I have not experienced this yet.

did some bench-testing of all the ARB's I had to hand, and the results of that were that there is really not much point in anything less than the 1" bar as it's softest setting is softer than the mid-point of the 7/8", and only ~3X the std (stupidly soft) ARB, at it's stiffest, it's just over 5X stiffer.

[BigD]

So do you sell them? Group buy price?

Something I'll be looking at in the near future too and also want to keep road manners and some track use. The standard S2 Billies on mine are pretty good and don't seem that soft on track (but maybe that's because I'm coming from a 4 door saloon to Elise). Although I thought my car had halved in 2 when I hit a bump on the Malaig road recently.

Campbell, adjustable front arb was one of my thoughts too to help with body roll whilst keeping good road softness.

nope, I am not a salesman for EP.

(if you want to try and group buy, mail Geary direct, but I suspect you will need a lot of you to get anything like a significant discount, the margins on Quantums are very small).

ARB wise, yes, forgot to mention that, so far as I can tell, there is no downside to a stiff ARB, and to be blunt, the 1" is the minimum I would go with. On paper, at some point if you go too stiff, on the road it will start to affect ride etc as it will transfer the bumps across the car, but in practice, I have not experienced this yet.

did some bench-testing of all the ARB's I had to hand, and the results of that were that there is really not much point in anything less than the 1" bar as it's softest setting is softer than the mid-point of the 7/8", and only ~3X the std (stupidly soft) ARB, at it's stiffest, it's just over 5X stiffer.

It was more tongue in cheek than anything else.

Always good to hear some real life experience, thanks.

Similarly to Campbell the Oulton and Cadwell trip will be a good standard setup test.

[Scuffers]

It was more tongue in cheek than anything else.

no problem, I'm really not that sensitive a sole...

[Mike Scib]

Right, what about helper springs?

Required or not really, if so what weight?

Cheers again the info!

[Scuffers]

Right, what about helper springs?

Required or not really, if so what weight?

Cheers again the info!

not relevant for the non-adjustables with VR springs.