The manufacture was WRONG and I proved it!
TLDRIn this video, the host challenges a claim made by a manufacturer in their training videos, which suggests that the point at which a chain is attached to a vehicle being righted significantly affects the force required. To test this, the host uses a load cell to measure the force exerted during various righting attempts on a bus. Despite the manufacturer's assertion that attaching the chain to the high frame rail provides more downward force, the host's experiments show no significant difference in force whether the chain is attached to the high or low frame rail, or even just to the window frame. The host emphasizes that the point of attachment does not change the total weight of the vehicle, and the most efficient point to attach the chain is the one that is most accessible and strong enough for the task. The video concludes with a smooth righting of the bus, demonstrating the host's point that the ease of access and strength of the attachment point are more important than the specific location of the chain on the vehicle.
Takeaways
- ๐ The video aims to test and debunk a claim made by a manufacturer in their training video about the force exerted when righting a vehicle by attaching a chain to different frame rails.
- ๐ The speaker initially disagreed with the manufacturer's advice and received pushback from industry experts, prompting this experiment to prove his point.
- ๐ง A wireless load cell is used to measure the force exerted during the process of flipping a bus over to compare the force when attaching to the high and low frame rails.
- ๐ ๏ธ The experiment involves multiple attempts, hooking the chain to different points on the bus, including the window frame, low frame rail, and high frame rail.
- ๐ The load cell readings show that the force required to right the bus does not significantly differ regardless of whether the chain is attached to the high or low frame rail.
- ๐ง The speaker argues that the physics of the situation dictates that pulling down on one frame rail should affect the other similarly, as they are connected by crossmembers.
- ๐ The force required to lift the bus decreases as the bus approaches the tipping point, contradicting the manufacturer's claim about increased downward force.
- ๐ค The video suggests that the angle at which the rigging pulls in relation to the fulcrum (point of rotation) is more critical than where the rigging terminates on the vehicle.
- ๐ง The speaker concludes that the easiest and most accessible strong point on a vehicle is the best for attaching recovery equipment, rather than following the manufacturer's specific advice.
- ๐ The test results are used to emphasize the importance of practical testing over relying solely on theoretical advice or expert opinion.
- ๐ At the end of the video, the bus is successfully righted using a method that contradicts the manufacturer's training advice, demonstrating the speaker's point.
Q & A
What was the main point of contention between the speaker and the manufacturer's training videos?
-The speaker disagreed with the manufacturer's claim that hooking a chain to the high frame rail rather than the low frame rail when righting a vehicle results in a significant difference in the amount of force required.
What method did the speaker use to prove his point?
-The speaker used a large load cell with a wireless readout to measure the force required to right a bus by hooking it to different points on the frame to see if there was any difference in the force exerted.
What was the speaker's initial claim about the physics of hooking to different frame rails?
-The speaker claimed that there is no physical difference in the force required to right a vehicle, regardless of whether the chain is hooked to the high or low frame rail, as both rails are connected by solid steel crossmembers.
What was the outcome of the experiment?
-The experiment showed that the force required to right the bus did not change significantly when hooked to different points, including the high and low frame rails, or even when hooked to the window frame, proving the speaker's point.
Why did the speaker emphasize that the rigging termination point beyond the fulcrum is irrelevant?
-The speaker emphasized this because the fulcrum, or pivoting point, and the angle at which the rigging pulls in relation to the fulcrum are the only factors that affect the leverage and force required. The termination point of the rigging does not change the total amount of weight being dealt with.
What was the speaker's advice for choosing a point to hook the rigging during a rollover recovery?
-The speaker advised choosing the easiest and most accessible point that is strong enough to do the job, as the termination point of the rigging does not affect the amount of leverage or pull required.
What safety concern was mentioned regarding the experiment?
-The speaker mentioned a past incident where life-threatening injuries occurred while flipping the bus over, emphasizing the need for safety precautions during such operations.
Why did the speaker decide to use a synthetic rope instead of a steel cable for the experiment?
-The speaker chose a synthetic rope because it is easier to work with, has a nicer handling characteristic, and is less likely to cause injury or damage compared to a steel cable.
What was the speaker's reaction to the criticism he received from experts on YouTube?
-The speaker was upset and defensive, stating that he was right and that the load cell's measurements proved his point. He expressed frustration at being called names and criticized by people he considered to be experts.
What is the significance of using a certified load cell in the experiment?
-A certified load cell is important because it provides accurate and reliable measurements of the force applied during the experiment, ensuring the validity of the results.
How did the speaker ensure that the results of the experiment were consistent and reliable?
-The speaker used a certified load cell, ensured the rigging was correctly set up each time, and repeated the experiment with different rigging points to compare the force required in each scenario.
Outlines
๐ Disproving a Manufacturer's Claim on Vehicle Recovery Techniques
The speaker challenges a claim made by a manufacturer in their training videos regarding the optimal way to hook a chain to a vehicle that has rolled over. They argue that the manufacturer's assertion that hooking to the high frame rail provides more downward force is incorrect. To test this, the speaker uses a wireless load cell to measure the force exerted when hooking to different points on a flipped bus. The goal is to demonstrate the actual physics involved and refute the criticism received from so-called internet experts.
๐ Experimenting with Different Hooking Points on a Flipped Bus
The speaker details an experiment where they use a load cell to measure the force required to upright a flipped bus when hooked to different points. They refute the idea that hooking to the high side frame rail provides additional downward force, arguing that physics dictates that both high and low frame rails are connected and thus exert the same force. The experiment involves hooking to the window frame, low frame rail, and high frame rail to compare the force required in each case.
๐ ๏ธ Conducting a Controlled Recovery Test with a Load Cell
The speaker sets up a controlled test to measure the force exerted during the recovery of a flipped bus using a load cell. They emphasize safety and the importance of not having slack in the line during the operation. The test involves using a roll back and a Zach lift to control the bus's movement and measure the force, respectively. The speaker also addresses the importance of careful wording in training videos and the responsibility that comes with being an expert in the field.
๐ Understanding the Physics of Vehicle Recovery
The speaker discusses the physics behind vehicle recovery, specifically the concept of leverage and the pivot point during the recovery process. They argue that the point where the rigging connects to the vehicle is irrelevant beyond the fulcrum, which is the point of contact with the ground. The speaker emphasizes that the total amount of weight and the leverage applied are the only factors that affect the recovery process, not the termination point of the rigging on the vehicle.
๐ค Reflecting on the Experiment's Results and their Implications
The speaker reflects on the results of their experiment, which showed no difference in the force required to upright the bus regardless of whether the rigging was attached to the high or low frame rail. They assert that the experiment has proven their point about the irrelevance of the rigging's termination point, as long as the angle of pull in relation to the fulcrum remains constant. The speaker also addresses criticism from online experts and emphasizes their commitment to accuracy and the importance of evidence-based conclusions.
๐ Completing the Recovery and Setting the Record Straight
The speaker concludes the video by successfully uprighting the bus and emphasizing the smoothness of the operation. They highlight the importance of using the easiest and strongest point on the vehicle for rigging, arguing that it provides the same leverage and force as more complicated methods. The speaker reiterates their position that the termination point of the rigging does not affect the recovery process and encourages viewers to focus on the most accessible and secure points for rigging during a real recovery situation.
Mindmap
Keywords
๐กManufacturer
๐กTraining Videos
๐กVehicle Recovery
๐กLoad Cell
๐กFrame Rail
๐กLeverage
๐กZach Lift
๐กRigging
๐กPhysics
๐กTipping Point
๐กYouTube Experts
Highlights
A dispute with a manufacturer's training video on vehicle recovery techniques is addressed.
The narrator challenges the claim that hooking to the high frame rail provides more downward force when righting a vehicle.
An experiment is set up to measure the force required to flip a bus using a wireless readout load cell.
The importance of accuracy in training videos is emphasized, especially when they are considered authoritative sources.
The narrator refutes criticisms from internet experts who disagreed with his initial assertion.
A detailed demonstration of flipping a bus using different hooking points to the frame rails is conducted.
The use of a remote control for both trucks during the bus flipping operation is explained.
The concept of balance point in the context of vehicle recovery is introduced.
The narrator discusses the stability of buses and the factors influencing it during the recovery process.
A comparison of hooking to the low and high frame rails shows no difference in the force required to right the bus.
The experiment concludes that the termination point of the rigging on the vehicle does not affect the recovery process.
The narrator stresses the importance of the angle at which the rigging pulls in relation to the fulcrum.
A final demonstration involves wrapping the rigging around the entire bus to test the theory further.
The results show that the total amount of weight being dealt with cannot be changed by the termination point of the rigging.
The narrator asserts that the easiest and most accessible point on a vehicle is the best for rigging in a recovery situation.
The use of a certified load cell to measure the force provides a reliable and accurate measure of the experiment's results.
The narrator expresses his frustration with being criticized by experts, but stands by his position, which is proven correct.
The bus is successfully righted using the most straightforward method, proving the narrator's point about the irrelevance of the rigging's termination point.