· Super Moderator
4C SE, Giulietta Vel, 147, Sud, Guzzi 1100 Sport, Guzzi Le Mans MkV
Hi @peterA116 , yes , I have ARC. It works very well. The section of road I tested on is very uneven with lots of small dips and humps (nothing sharp-edged) and it was a hoot. She now corners flat (with just a very slight lean). Much better than on the standard suspension. There’s no bottoming out or grinding of @cipsony ’s diffuser fins as had occurred at those speeds on the standard suspension. I tried a few braking tests, getting more aggressive each time, and there is much less dive and more stability. Really happy about that. A huge improvement. The stability thing could also be partly from the Cup2s I’ve recently put on. She felt much more like @alfa1105 s’ 4C. Much more planted at speed over bumps than before. No steering oscillation/vibration at all when going over bumps. Lots of confidence. Not perfect. I’m going to increase the damping rate at the rear to see if that cures the annoying low speed bounciness. There was a dip and hump section of the road where I felt the nose of the car lift and bounce once. The front probably needs to be turned back a few clicks too. It’s certainly got me thinking.Sounds like you are on your way! Not surprised that some fine tuning is needed to dial it in. Can’t wait to hear the results. You have the ARC option correct? I’d be inclined to take a pound out of the rear tires before making adjustments to the units. Then do the same with the front (set the rears back up), then take out of both ends. That will give you a starting point for the TP adjustments as you play with the compression/rebound. I find on 17/18 re71r on base suspension, I like 24lbs/26lbs cold.
car looks awesome, I am using the same OEM style wheel painted all satin black.
Thanks for the tip about pressures. I reduced my pressure by 2psi after I checked them. They were overinflated due to higher ambient temps than the last time I used my car. I might drop them by one more psi. Even though they are standard sizes the Cup 2s are much wider than the P-Zeros. Stiffer sidewalls too. Sharp edged road joints appear harsher too. Maybe it’s the Cup 2s.
Summary so far. After my first drive, with damping set right in the middle of the range on both front and rear dampers, the Intraxes perform much better at high speed but more poorly at low speed than the standard suspension. A bit of time sorting is definitely required.
As for the much derided standard wheels, to my eye they look much better in a colour other than silver. Silver, I think, doesn’t do the design justice. Almost everything on the road has silver wheels and I’m well and truly over it. My new wheel colour is growing on me. Happier by the day. They look pretty good but best of all they are light with a standard width tyre combination.