Throttle Control Valve for GraverMax explained...

[sam]

Paulie: If you don't mind my input here, the bias control is a fine tune adjustment that works similarly to the regulator adjustment. With the newer machines I don't find myself using it as much any more. In fact I rarely use it now. But what you do is adjust the regulator so that as soon as you depress the foot pedal you get a nice, crisp tapping of the handpiece piston without any vibration or flutter. You can then use the bias control (if desired) to fine-tune to get on that perfect threshold.

 

[Paulie]

Paulie: If you don't mind my input here, the bias control is a fine tune adjustment that works similarly to the regulator adjustment. With the newer machines I don't find myself using it as much any more. In fact I rarely use it now. But what you do is adjust the regulator so that as soon as you depress the foot pedal you get a nice, crisp tapping of the handpiece piston without any vibration or flutter. You can then use the bias control (if desired) to fine-tune to get on that perfect threshold.

Thanks a lot for your fast support, Sam! I'll keep your advice in mind and try it like you said first tune the GraverMax (air pressure & speed) before fine tuning with the bias control. Kind greetings, Paulie

 

[Christian DeCamillis]

Paulie,

You are missing the part about adjusting the pedal so it doesn't have bleed air. Otherwise the bias valve doesn't do much other than act as a fine adjustment for the regulator. But i would talk to the manufacturer before you change anything and see if they would recommend it.

Chris

 

[Paulie]

Thanks Chris! Yes, a good idea to ask a GRS staffmember their technical advice about the pedal bleed air. I don't have the know-how myself:thinking:. First I can try Sam's tip and see what's the effect, thanks again! Greetings, Paulie

 

[vdrum4250]

old thread i know..but anyone have that manual and pictures of the TCM...many thanks.. or got one to sell?

 

[vdrum4250]

mADE MY OWN.. WORKS BETTER THAN BIAS KNOB

 

[Love2carve]

There was a TCM under the Christmas tree for me. I installed it easy like the manual shows. Used it already for stippling cutting lines and shading.
But as I’m now moving my shop to another location, I only can start over again before Wednesday next week.
I will ASAP write a review on the TCM, in particular showing new work and bulino using it.
I’m one of the rare ones that use a Graversmith, but I can tell you that I love that machine, and even more with the TCM

To be continued, :big grin: arnaud

Can you post a link as to where to buy the TCM and what they cost? Thank You!!