A question that has been raised is based on the effect seen at the end of the video where a 'clump' of particles moves to the spade drill tip. I had only left that clip in the video for amusement as I considered it a mistake on my part to allow the steel drill to influence the plug's magnetic field, but it does raise a valid question. Could this happen in the Kona gearbox due to the proximity of the steel final drive gear, which is about located about 2 cm away from the OEM plug end? The effect, as best as I understand, is due to the high-gradient distortion of the magnetic field lines surrounding the steel plug where they pass through the sharp tip of the spade drill. Particles are attracted to areas where they can reduce the magnetic field gradient. The large gear inside the Kona gearbox doesn't run nearly as close and doesn't have sharp contours that might attract particles. However, in saying that it's clear that having a high magnetic field strength seems to have low importance as even the very-weak Toyota plug worked very well at sequestering particles.
Yes, but only because the factory magnet contained inside the gear reducer fails to sequester ferrous wear particles because it's allowed to rattle around in a small pocket while driving. This test pertains to demonstrating that particles on a magnet are not removed by being exposed to high fluid turbulence. However, I used cold-filed particles in my test while in fact those in the gear reducer have undergone exposure to a high temperature at the moment they are worn off and won't have as strong an attraction to a magnet. The secret to obtaining a long life from a Kona gear reducer is to change the oil at 300 km / 500 miles from new and again at 1,500 km / 1000 miles. If dealers had provided this service as a workaround to Hyundai's design defect there wouldn't be so many problems. There's been no factory correction on first-gen models (2018 - 2023) but 2nd-gen (2024+) are not affected.
A question that has been raised is based on the effect seen at the end of the video where a 'clump' of particles moves to the spade drill tip. I had only left that clip in the video for amusement as I considered it a mistake on my part to allow the steel drill to influence the plug's magnetic field, but it does raise a valid question. Could this happen in the Kona gearbox due to the proximity of the steel final drive gear, which is about located about 2 cm away from the OEM plug end?
The effect, as best as I understand, is due to the high-gradient distortion of the magnetic field lines surrounding the steel plug where they pass through the sharp tip of the spade drill. Particles are attracted to areas where they can reduce the magnetic field gradient.
The large gear inside the Kona gearbox doesn't run nearly as close and doesn't have sharp contours that might attract particles. However, in saying that it's clear that having a high magnetic field strength seems to have low importance as even the very-weak Toyota plug worked very well at sequestering particles.
Does this relate to excessive and early final drive wear on the kona ev?
Yes, but only because the factory magnet contained inside the gear reducer fails to sequester ferrous wear particles because it's allowed to rattle around in a small pocket while driving. This test pertains to demonstrating that particles on a magnet are not removed by being exposed to high fluid turbulence. However, I used cold-filed particles in my test while in fact those in the gear reducer have undergone exposure to a high temperature at the moment they are worn off and won't have as strong an attraction to a magnet.
The secret to obtaining a long life from a Kona gear reducer is to change the oil at 300 km / 500 miles from new and again at 1,500 km / 1000 miles. If dealers had provided this service as a workaround to Hyundai's design defect there wouldn't be so many problems. There's been no factory correction on first-gen models (2018 - 2023) but 2nd-gen (2024+) are not affected.