To begin with, if you're in a rush for new suspension then these aren't for you. It took just over 3 weeks for these to come through. But the dampers are hand built so it's to be expected. Just bear that in mind.
I dealt with Edwin through MeisterR. Good customer service and quick with the replies through email. I asked about stiffer spring rates but was assured that their standard rate for the EP3/DC5 is good enough for road and track use with these dampers even with semi slick tyres.
Front 8kg/mm
Rear 12kg/mm
So onto the product. They're almost identical to the Zeta-R I previously had. Differences that they have covers that protect the stanchion and spring. Also scribe marks on the bottom of the dampers and an Allen key bolt poking out.
Fitting was straight forward. As they're the same body and springs as the previous. Setting the heights and spring preload was easy. Only a few minor adjustments were needed on the car. N/S/F spring has around an extra 10mm of spring preload to compensate the extra weight of the engine and driver. With driver weight in the car, the height on the front is identical on both sides. The rear height is set to 10mm higher.
Geometry was all set up.
Front
-2.2 camber
0.5mm toe out
Rear
-1.6 camber
0mm toe
Onto the driving. First initial thoughts was how smooth the felt. Yet still maintaining feel and feedback of the road. Going over lumps and bumps the car is much more composed and less skittish. Gives greater confidence on pushing a little harder over uneven road surfaces. Less wheel spin accelerating and better braking on uneven surfaces. On the damper settings I'm fairly soft. From soft settings 5 clicks on the front and 10 on the rear. These have a range of around 36 clicks. Before I used to run 15 clicks front and 20 clicks rear on the old Zeta-R. While is feels a lot softer now, when you push in a corner it almost stiffens up, doesn't roll much and feels just as composed if not more than the old Zeta-R set up.
I'll keep updating this thread as I continue to use and test these. In 2 weeks time I've got a track session at Trax Silverstone where I'll wind the dampers up to a pretty stiff setting and see how they do on track.
Build thread