DSE Quad link rear suspension tuning

[Ron Sutton]

Originally Posted by Track Junky

Agreed. Ron, when I get my Penske's I'm dragging you out to the track with me.

Let's dial in the valving curves first. We need to adjust the bleeds & shim stacks to get the low speed rebound numbers where we want them for grip ... without the high speed numbers being so stiff it upsets the car over rough surfaces.

What model of Penskes are you planning to buy ?

[Track Junky]

Originally Posted by Ron Sutton

Let's dial in the valving curves first. We need to adjust the bleeds & shim stacks to get the low speed rebound numbers where we want them for grip ... without the high speed numbers being so stiff it upsets the car over rough surfaces.

What model of Penskes are you planning to buy ?

Planning on the 7500 DA's. I still need to weigh the car and calculate motion ratios before I order them. The guy that is going to build them for me is in Roseville.

[Ron Sutton]

Originally Posted by Track Junky

Planning on the 7500 DA's. I still need to weigh the car and calculate motion ratios before I order them. The guy that is going to build them for me is in Roseville.

Mike is a wonderful guy to work with. We've been friends & working together for years and only 1 of 2 shock guys I work with. He & I are working on revalving a different brand of shocks for a serious PT guy currently.

If your budget will allow, I'd like to suggest you consider either the Penske 7300DA with base valve or JRI ST/08 DA with base valve. I'm guessing we're talking about 20-30% more $, but the performance difference is worth it, if you can afford it.

I'm a big proponent of racing within your budget, but at the same time, I don't like to make a purchase & then need repurchase something again to achieve my goals.

Talk to Mike about those two options, get his opinion & prices, then decide what works best for you.

P.S. Both are great shocks, but the JRI's have a tick less "stiction" and a broader range of adjustability.

[Track Junky]

Originally Posted by Ron Sutton

Mike is a wonderful guy to work with. We've been friends & working together for years and only 1 of 2 shock guys I work with. He & I are working on revalving a different brand of shocks for a serious PT guy currently.

If your budget will allow, I'd like to suggest you consider either the Penske 7300DA with base valve or JRI ST/08 DA with base valve. I'm guessing we're talking about 20-30% more $, but the performance difference is worth it, if you can afford it.

I'm a big proponent of racing within your budget, but at the same time, I don't like to make a purchase & then need repurchase something again to achieve my goals.

Talk to Mike about those two options, get his opinion & prices, then decide what works best for you.

P.S. Both are great shocks, but the JRI's have a tick less "stiction" and a broader range of adjustability.

I'm glad you know of him. That reassures the prior recomendation. I'll look into the 7300 Da's.

Is there anybody local that you know of with a set of scales?

[Ron Sutton]

Originally Posted by Track Junky

I'm glad you know of him. That reassures the prior recomendation. I'll look into the 7300 Da's.

Is there anybody local that you know of with a set of scales?

7300DA's ... with a base valve option. The basevalve is a big deal, allowing the shock to follow irregular surfaces better for more grip.

I sold my last set of wireless Intercomp scales to make a package deal. I kept my roll on scale platen, which is the bigger cost by far, but I need to buy another set of wireless Intercomp scales to go on them.

I have a long time racing buddy that will loan me his anytime. We'll need to scale your car at his shop or mine. If you really want to get trick, and learn a lot, we'll book time on a pull down rig.

[Track Junky]

Sounds great. Lets get together at your shop when you free up. It will have to be a weekend for me. PM with more details, contact info, and shop location.