07-12-2016, 01:59 AM
I may be wrong, it won’t be the first time….maybe someone with more physics knowledge can contribute.
But this is what I was thinking...the clunking is basically a failure to RPM match from one gear to the next. The range from 1st to 2nd is the greatest (I estimate about 2000 RPM).
What I was thinking about the higher RPM is the engine has greater angular momentum and when shifting the engine wants to slow down less when disengaged thus having a closer match in RPMs. The higher the RPM the greater the momentum (p=mv for linear momentum, angular momentum gets much more complex, but essential the faster the velocity the greater the momentum).
So I was thinking at higher RPM, the engine tends to “float” like when you over rev an engine and get valve float.
At the lower RPM, I was thinking my new quicker shifting before the engine has a chance to slow makes for a smoother transition. Similar to merging into traffic while speeding up instead of slowing down.
I may be way off, but these are the ideas I had in my head.
But this is what I was thinking...the clunking is basically a failure to RPM match from one gear to the next. The range from 1st to 2nd is the greatest (I estimate about 2000 RPM).
What I was thinking about the higher RPM is the engine has greater angular momentum and when shifting the engine wants to slow down less when disengaged thus having a closer match in RPMs. The higher the RPM the greater the momentum (p=mv for linear momentum, angular momentum gets much more complex, but essential the faster the velocity the greater the momentum).
So I was thinking at higher RPM, the engine tends to “float” like when you over rev an engine and get valve float.
At the lower RPM, I was thinking my new quicker shifting before the engine has a chance to slow makes for a smoother transition. Similar to merging into traffic while speeding up instead of slowing down.
I may be way off, but these are the ideas I had in my head.