Here is a follow up to show you how the rear suspension works. You will notice a few things diffrent from asphalt.
- our cars use limiter chains to keep them from moving farthure than we want them to.
- The rear end has a wierd bar in the middle. That is a pull bar. The rear axle bar mounts on the ends are called birdcages and the have a bearing between them and the axle itself so the axle can turn inside the birdcage. This allows us to use the pullbar without binding anything up and the pullbar acts as a shock absorption unit to help the tires keep digging. Here is an aboe view of the left rear of the car
This next one is mounted to the right frame rail and is pointed towards the same left rear
This next one is pointedtowards the right rear. You will notice the pull bar has a spring this time. That is a 1200 pound spring with a 1/2 inch of preload. When he gets on the throttle it compresses that spring 3 inches which to me is always mind blowing that a 2500 pound car is simehow able to make 3600 lbs of force into the spring.
Hope you enjoyed. I will try to answer any questions you have and will be working on my next post.
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It's nice to see the suspension work from this angle. I saw it work on the track plenty of time and kind of known how it works but did not know it move that much.
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Yeah it is crazy. You see the limiter chain on the left. That has 5 inches of travel from ride height. So when you throttle it up it rolls under the drivers seat almost and steers the rear end like a forklift does to help it turn the corner while beeing hooked to the track.
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