Some new SPL stuff sneak peak
11-15-2006, 06:41 PM
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Some new SPL stuff sneak peak
Hey guys,
I just received an email from Kuah @ splparts.com of the new prototype arms going onto my car for testing. They look so amazing I couldn’t resist posting about it
That’s the new lower (camber) link and the mid link they have been working on. Can’t wait to try this new setup out on the track…
I just received an email from Kuah @ splparts.com of the new prototype arms going onto my car for testing. They look so amazing I couldn’t resist posting about it
That’s the new lower (camber) link and the mid link they have been working on. Can’t wait to try this new setup out on the track…
11-15-2006, 07:48 PM
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IS that lower spring perch adjustable? To raise or lower the ride height? If that is, that is a sweet set up. Even easier to adjust. Can't wait to here more about this.
11-15-2006, 07:52 PM
#6
Originally Posted by axolotol81
IS that lower spring perch adjustable? To raise or lower the ride height? If that is, that is a sweet set up. Even easier to adjust. Can't wait to here more about this.
good eye, it does appear to be adjustable upon second look.
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11-16-2006, 08:03 AM
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RE: sentry65
The advantage of this arm is that it is a true adjustable toe link, while retaining the stock placement of the spring, so there is no need to convert to a "true" coilover setup. A coilover conversion disadvantage is it introduces greater shock piston friction, so there is a performance loss, and also the chassis and bushings on the spindle are not designed to carry loads in that fashion.
The other advantages are that it eliminates the rubber bushing on the stock arm, and this arm is also stronger than stock. It also allows height adjustment from the bottom which makes it trivial for a shop to corner weight the car.
RE: 350Zteve
This arm is 1lb heavier than the stock arm (5lbs vs. 4lbs). However the spring is lighter (3lbs vs. 5lbs), so there is a net loss of 1lb per side. For extra cost we can get Swift titanium alloy springs that will be even lighter.
BTW, it is almost impossible to make adjustable suspension arms that are lighter than the stock 350Z arms, the steel adjusters and bearings will always make the adjustable arms heavier. For example on our front camber arms, our chromoly tubing frame is lighter than stock, but the adjusters and bearings make it heavier.
This is our first prototype and we are still working out the bugs, we'll post more information as it gets closer to production.
The advantage of this arm is that it is a true adjustable toe link, while retaining the stock placement of the spring, so there is no need to convert to a "true" coilover setup. A coilover conversion disadvantage is it introduces greater shock piston friction, so there is a performance loss, and also the chassis and bushings on the spindle are not designed to carry loads in that fashion.
The other advantages are that it eliminates the rubber bushing on the stock arm, and this arm is also stronger than stock. It also allows height adjustment from the bottom which makes it trivial for a shop to corner weight the car.
RE: 350Zteve
This arm is 1lb heavier than the stock arm (5lbs vs. 4lbs). However the spring is lighter (3lbs vs. 5lbs), so there is a net loss of 1lb per side. For extra cost we can get Swift titanium alloy springs that will be even lighter.
BTW, it is almost impossible to make adjustable suspension arms that are lighter than the stock 350Z arms, the steel adjusters and bearings will always make the adjustable arms heavier. For example on our front camber arms, our chromoly tubing frame is lighter than stock, but the adjusters and bearings make it heavier.
This is our first prototype and we are still working out the bugs, we'll post more information as it gets closer to production.
11-16-2006, 10:07 AM
#11
Originally Posted by kuah
RE: sentry65
This arm is 1lb heavier than the stock arm (5lbs vs. 4lbs). However the spring is lighter (3lbs vs. 5lbs), so there is a net loss of 1lb per side. For extra cost we can get Swift titanium alloy springs that will be even lighter.
This arm is 1lb heavier than the stock arm (5lbs vs. 4lbs). However the spring is lighter (3lbs vs. 5lbs), so there is a net loss of 1lb per side. For extra cost we can get Swift titanium alloy springs that will be even lighter.
11-16-2006, 11:48 AM
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RE: 350Zteve
Thanks! As for pricing, the lower/camber arm will be very competitively priced. The mid/toe link will honestly be somewhat expensive, there is a lot of CNC machining and billet material, plus the cost of the springs. However this arm will offer alot of tunability for a track car. And guys with "true" coilover conversions can go back to the superior stock configuration and still have full adjustability.
RE: Rickdogg
We have to do some re-design based on the prototype, so these are not the final pieces yet, we'll have more pics when the design is finalized.
Thanks! As for pricing, the lower/camber arm will be very competitively priced. The mid/toe link will honestly be somewhat expensive, there is a lot of CNC machining and billet material, plus the cost of the springs. However this arm will offer alot of tunability for a track car. And guys with "true" coilover conversions can go back to the superior stock configuration and still have full adjustability.
RE: Rickdogg
We have to do some re-design based on the prototype, so these are not the final pieces yet, we'll have more pics when the design is finalized.
11-17-2006, 06:04 AM
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Originally Posted by Vq.turbo.DremZ
Will they be releasing any other arms that eliminate the spring bucket for "true" coilovers? i.e. Stance. I tried to find the battleversion setup but with no avail.
11-17-2006, 06:21 AM
#17
Not to question your suspension expertise because i know for a fact that you know way more than me, but isn't it fact that the closer the spring/coilover mounting is to the wheel without touching will give you both better feedback and efficiency out of the system? I do agree that where these coilovers, esp. Stance, places/mounts to, does increase wear on bushings and such, but why not just replace those with spherical ones? Again im not to challenage your knowledge or doubt your information, but rather get a better understanding and a comparison to what i've been told. Any help and insight is highly appreciated..
11-17-2006, 10:49 AM
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Originally Posted by Vq.turbo.DremZ
Not to question your suspension expertise because i know for a fact that you know way more than me, but isn't it fact that the closer the spring/coilover mounting is to the wheel without touching will give you both better feedback and efficiency out of the system? I do agree that where these coilovers, esp. Stance, places/mounts to, does increase wear on bushings and such, but why not just replace those with spherical ones? Again im not to challenage your knowledge or doubt your information, but rather get a better understanding and a comparison to what i've been told. Any help and insight is highly appreciated..
Packaging constraints is the main reason for using a coilover setup. There is no improvement in feedback and efficiency in placing the spring closer to the spindle.
You can change out the bushings, but that is only part of the problem, the thickness of the spindle and the sheet metal structure of the chassis, has to bear this load over time without fatiguing. In the stock configuration there is very little load on that part of the chassis and spindle, just the forces the shock absorber put out. With the coilover conversion, these places now have to bear about 800lb of load per side, that is a rather big change in specification. In that context the bushing issue is really not that surprising.