Hi Willy,
I know I looked like I was on-line, but I nodded off here....
My router uses a Makita variable speed, but I run it on the lower end (8K to 10K rpms) when using the "quick change" tool. I wouldn't go more than is recommended when using this tool holder system.
In my case, I have to use the 1/2" chuck adapter and put it into the makita's chuck which makes the quick-change protrude a bit much and increases vibration, although I have been able to seat it well and run it quite smoothly.
Makita uses a proprietary thread on its spindle so i got an extra chuck and plan to turn/thread the outside to fit the quick-change thread directly which would shorten the tool extension considerably....then I was going to do tests to find out just how much (within reason) I could increase the rpms.
I don't think this system will be safe at your desired 24K rpm. BUT, I would contact HighTechSystems and see if they have developed their system further to work reliably at higher speeds.
the problem, I believe, is that the spring loaded tool collet holder tends to release from centrifugal forces above 10K....When I got mine, they had just upgraded the spring to allow the 10k rpm . Before that the tool could only safely reach 8k (I think). Who knows for sure?.... Maybe HighTech is being very conservative to avoid flying destructive/injurious sharp metal parts.
