4000 RPM Audible Vibration?

[Journeyman]

Here's an idea. Get a $7 bluetooth microphone that connects to your phone. Try taping the mic in various locations and see where the sound is loudest.

Mine does feel like it wants to shift around 4K for "normal driving," but she really likes it when you pull back on her ears

https://www.amazon.com/TXTUNE-Microphone-Cancelling-Lightning-Recording/dp/B0D7H34J4L/ref=sr_1_8?crid=1J9MZLG8CCF8X&dib=eyJ2IjoiMSJ9.J9mj5mdiZ1W_Y2tfATNP17ZPQUMdCBm-g3cV0PQc7BUYDsV9cQ1gI9q2mhuWsg_4bsxnd759GbQldEOm_JkmCirQ1KNVpMNi0QJd_Wl9Z1VNDAQaEs2wjJhNtEPqQZSb1NhGwqbJWu5BHcFQ2LowATVxhrOvXOKT-qYH9Z3uMmHnOivS0DIB2HkR1mraN0Xe3MROml-srHozPPqXzzFEydTF-vesHnV8W15U_xMfhbGsTBQr2zdvtDqguYbdr_6TDMK6RGqYMYB5FBwgoux1K8_vGbb58n8CdPSbmlJ60VA.mEaNlkFhh8hCfFiKt_5A5DUYmdtxUbTQ6KMmRWbU8Xg&dib_tag=se&keywords=cell+phone+lavalier+mic&qid=1757982483&sprefix=cell+phone+lavalier+mic%2Caps%2C148&sr=8-8

 

[Nashvegas]

Here's an idea. Get a $7 bluetooth microphone that connects to your phone. Try taping the mic in various locations and see where the sound is loudest.

Mine does feel like it wants to shift around 4K for "normal driving," but she really likes it when you pull back on her ears

https://www.amazon.com/TXTUNE-Microphone-Cancelling-Lightning-Recording/dp/B0D7H34J4L/ref=sr_1_8?crid=1J9MZLG8CCF8X&dib=eyJ2IjoiMSJ9.J9mj5mdiZ1W_Y2tfATNP17ZPQUMdCBm-g3cV0PQc7BUYDsV9cQ1gI9q2mhuWsg_4bsxnd759GbQldEOm_JkmCirQ1KNVpMNi0QJd_Wl9Z1VNDAQaEs2wjJhNtEPqQZSb1NhGwqbJWu5BHcFQ2LowATVxhrOvXOKT-qYH9Z3uMmHnOivS0DIB2HkR1mraN0Xe3MROml-srHozPPqXzzFEydTF-vesHnV8W15U_xMfhbGsTBQr2zdvtDqguYbdr_6TDMK6RGqYMYB5FBwgoux1K8_vGbb58n8CdPSbmlJ60VA.mEaNlkFhh8hCfFiKt_5A5DUYmdtxUbTQ6KMmRWbU8Xg&dib_tag=se&keywords=cell+phone+lavalier+mic&qid=1757982483&sprefix=cell+phone+lavalier+mic%2Caps%2C148&sr=8-8

That’s a great idea! Mine likes to “cruise” at around 3k in whatever gear that happens to accomplish that. 2-2.5rpm is almost in lugging along territory. Not good.