10" Micro Sprint Jacob's Ladder Assembly

Click the Configure button to specify our fully customizable Jacob's Ladder.

This Jacob's Ladder is considered a 5"-5"-10" ladder, because it has 5" long straps, 5" between strap holes on the paddle, and is designed for 10" between mounting holes on the frame tabs. Using these dimensions virtually eliminates the side-to-side movement of the rear axle when moving up and down.

On the Hyper Chassis, use the Multi Point Paddle selection with the top and bottom straps in the 3 hole for winged (go to 1 hole for wet heavy, and 5 holes for smooth/slick). For wingless, use the 3 or 5 holes as your starting point and go to the 3 or 1 holes for wet heavy or a big cushion. Using the 5 holes will make the car tighter in mid turn and slightly looser on entry, while using the 1 hole will make the car looser on exit and tighter on entry.

Using other manufacturer's paddles is exactly like running our 10" long paddle in the 1 hole (5" between centers).

Includes choice of 9", 9-1/2", 10", 10-1/2", 11", 12" or 13" paddle, four 5, 4-5/8", or 5-3/8") standard straps, hardware, and end tabs. Configure it exactly how you want. The length of the paddle will determine the position of the right rear bearing carrier. Hyper Chassis with brake caliper on the right will need the 9-1/2" or 10", and if using a brake floater, we recommend the 13". You may need to offset your right rear torsion arm a little to get the shackle to be centered on the bearing carrier when using the 12" or 13" paddle.

On the 12" and larger paddles, the bottom edge of the paddle is not straight, it has an indent in it to clear the frame to allow the rear axle to fully droop.

Before 2024, our cars came with the 10" length paddle. After extensive R&D, we now recommend starting with a 13" paddle. The advantage of the longer paddle is that it moves the right rear bearing carrier out several inches which increases the wheel rate (effective spring rate) and it resists roll. This greatly stabilizes the car when it hits the cushion or navigates a bump. A big advantage when racing on a track that has those characteristics.

In combination with this longer paddle, your chassis must have the 3-hole Jacob's ladder tabs (T-561 (3), T-581 (1), T-591 (4)). Use the far-left holes when using a longer paddle.

You will also need an offset right rear arm, either 40-172HD (for the 13" Paddle)

Generally, when using the longer paddles and racing wingless, the right rear bar can be softened 1 full size due to the increased roll stiffness.

A brake floater must be used in lieu of the right-side brake when using the longer paddles so that the right rear tire offset is correct. The offset needs to be able to achieve 15-3/4" for slick conditions.
Here is our setup sheets for the Hyper Chassis when using the 13" paddle and the rear axle spacer diagram.