Table of Contents
How does a steering tag axle work?
A steerable tag transfers the rear pivot point to the center of the drive axle. An aired up or unloaded tag also transfers the pivot to the drive axle center. There is no tighter a radius turn with either. Any statement otherwise is just smoke and mirrors.
What is the benefit of rear axle steering?
The rear wheels turn in the opposite direction of the front wheels (right) at lower speeds to increase agility. How it works is quite simple but ingenious. At speeds at or below 31 miles per hour, the rear wheels will steer in the opposite direction of the fronts. This effectively shortens the wheelbase.
What’s the purpose of a tag axle?
The primary purpose of a tag axle is to provide increased weight-carrying capacity for larger/heavier motorhomes. A tag axle increases the support of the chassis at the rear of the RV to allow for greater weight carrying capacity, and results in a more stable ride.
What is the difference between a pusher axle and a tag axle?
A tag axle is where the rear-most drive axle is non-powered, also referred to as a free-rolling or dead axle. A pusher axle is where the forward-most drive axle is not powered. The tag axle has been the most common. It is generally perceived to have traction issues in challenging conditions.
What is passive steering?
The passive steering system uses the lateral forces generated in a turn (through suspension geometry) and the bushings to correct this tendency and steer the wheels slightly to the inside of the corner. This improves the stability of the car through the turn.
Why is it called a tag axle?
A tag axle RV is a motorhome that has a third axle located behind the rearmost axle. It gets its name from the fact that it “tags” along behind the drive axle. It’s a non-drive axle that typically has a single tire on each side.
How much weight can a pusher axle carry?
“Single axles are restricted to 20,000 lbs. regardless of location on the chassis, with a total gross weight of 80,000 lbs. as a limitation without requiring additional waivers. Tandems are limited to 34,000 lbs., but still regulated to the total gross weight of 80,000 lbs.”
Why is it called a pusher axle?
Why add axles? Adding an extra axle to a truck allows the truck to carry more load. This modification is common in the construction industry, where dump trucks can quickly reach maximum carrying capacity. If it’s ahead of the tandem, a lift axle is called a “pusher”.
What is rear dead axle?
Dead axle is the axle which only supports the wheels. It does not transfer power or torque to the wheels whatsoever. In case of a front wheel drive, the rear axle is the dead axle, and in case of rear wheel drive, the front axle is dear axle.