FDF Raceshop Educational Displays exist to make suspension theory click. Each one is a working model you can pick up and move with your hands, so instead of reading about a concept or watching a simulation, you watch it happen in front of you. Sits well on a desk, a shop bench, a trailer shelf, or a classroom table.
Roll center is the one that gets talked about most and understood least. It isn't a fixed point you bolt in, it's a construction, and it moves the second the suspension does. On a double wishbone car it falls out of where the upper and lower arm lines meet, and this display lets you watch that intersection instead of imagining it. Relocate either arm at the wheel end or the chassis end, cycle the suspension up and down, roll the body over, and see how far the point travels for a small movement at the wheel. Then move the center of gravity and watch the distance between the two open up and close. It's the clearest explanation there is of why arm angles get argued about as much as they do.
What you walk away with is a real understanding of roll center migration, and why a car that felt planted at one ride height can feel like a different car an inch lower. The adjustable center of gravity is the part that ties it together, because roll center on its own means very little until you can see how far the mass sits above it. It's a teaching aid rather than a setup tool, so it won't spit out numbers for your chassis. What it does is take a diagram you've squinted at a hundred times and turn it into something you've watched move in your own hands.
Please Note
We're thrilled that some of our 3D printed products are in high demand! Occasionally, this means certain items may have a lead time of up to 2-3 weeks as we work hard to fulfill orders. We appreciate your patience and understanding, we promise, It's worth the wait.
Print File Only - File will be sent to your email after purchase
Does not include the required (2) M4 x .7 Bolts
Personal Use Only License:
By purchasing this file, you are granted a non-transferable, non-commercial license to download and 3D print this model for your personal use.
You may NOT:
– Resell or redistribute the digital file
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All designs remain the intellectual property of FDF Raceshop.
I like it
Great product
Really loved these educational (toy-ish:)) decks
nice tool for under standing roll center
For offroad, Body roll is a major consideration. It is easy to see the camber change and how to design for no positive camber except minimally on droop. I'll have to read the manual to work on roll center.
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