Proxxon IB/E problem

Hi guys,
i've got some problems with my superpid and my router (proxxon IB/E).
i was talking with Val (Superpid staff, i think so), and finally he told me he had to talk with Roman, but i open this discussion here, to try to find if anybody has had a similar problem, while Roman and Val try to find the problem...

My problem is the following:
When i connect the router, and the rpm are between 5000 and 11.000
works good, but when i go up from 12.000 rpm my router begins to make
a strange noise and vibrate, an then when the potentiometer is full
works good, but it's not measuring right, because it is measuring
20.000 rpm, and i think is 30.000 rpm, but anyway i've got a
suspiction about my sensor is not measuring well, or my shaft is not
enough big and the sensor doesn't works as it should do it...

At the beginning i joined the triac legs and the router behaviour was the same, and then to ensure it was not interfering i removed it, and made a bridge, so now the circuit of the router is just for conversion to AC to DC...

Anyone has had a problem like this??

Attach some pics and the video....

Photos
https://drive.google.com/a/cittec.es...k&usp=sharing#

Video


(Sorry for the video, because there is a baby music, it was running a app for my baby and it is not aware to me :()

Best Regards..

UPDATE: i put the message in the wrong thread!!!! sorry. Fixed
Admin you can delete this post!!!!