In the past 1/2 season, the 225TH spring has gained hype, and I want to know why. At 1st glance, you see a very unconventional spring, not what we are used to seeing on a modern car, it is 2024, and by today's standards, this is not what we race on. In the past few years, the name Swift has been showing up more and more around the race track with different spring designs and rates. This brings up the question, do we need it to be fast or do we need it to be broke? We know the answer and when something new shows up we have to have it.
Let's dive in a little deeper and look at what we are getting for our money and let's understand that I am learning at the same time as you while keeping an open mind to new things.
We will do a two-part test, the 1st one in the shop, testing the rate and getting the general data from the spring. The 2nd end of the test will be by a 7-time National champion who can tell what a car is doing and why. We will come back to this as an update to this post, unless we find something else more important then we will update you by video.
Let's look at the outline of these springs and what they are made of.
We tested 2 types of Swift and 2 BSB springs. As you can see the 225TH is different from a standard spring.
Here are the overall ratings for each spring, we rate per .200 of depth and start at a 12.800 height and go down to 8.0 inches.
You be the judge, but I don't see much in the data that stands out saying this is the RR spring that you must have, and if you don't than you are going to be slow. Also, this is not a comparable to any other springs, we just tested these springs that we had.
We will follow up after we race the spring and make some comparisons to other springs and rates too. This is an attempt to learn more about the RR and how it is effecting the car, both in performance and feel.
https://youtu.be/DfOHArpXXHg Youtube Video about this spring
I am not seeing anything at all to indicate there is something to be gained by just switching out to the Tight Helix. However, It would act VERY differently when you put a spring rubber in and maybe that's good or maybe that's bad I don't know.
You would have to force in even a 1/2" rubber with those tight coils. That would make a big change in both the rate and rate ramp up. It would be significantly different than any low coil count rear spring that doesn't engage a rubber at all until you are in full dynamic load which means only a late ramp up in the 3rd or 4th inch of compression (which I always tho…
Not seeing the must have wow factor