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Today I disconnected all wires and reconnect them with fresh mind. Now my motor turns perfect.

Thanks for reading. Sorry for taking your time

I use G320 and Mach3 to turn my servo.

My servo turns CW perfect but when I try CCW G320 fails.

I tried to reverse encoder and motor power leads. Nothing changed. Again motor turns CW perfect...

more torque is always better.

there is a swedish friend working on converting BF-20 nowadays.

I will give him this topic to meet you.

Good luck

is it possible to anneal t5 or t6 aluminum tube easily?

I think one way is heating tube below melting temperature leave it cool slowly.

if this is true method for annealing. how long time...

thank you for sharing your knowlage and work

than you for all suggestions.

Do you have any photo or video about bending pipe with any hand tool?

I want to bend 13mm OD with 1mm wall thickness aluminum pipe like attached picture.

Because of its small bending radius I have problems. It gets wrinkled or torned.

Is there anyone have...

Is this motor suitable for gecko 320?

If you need some machined parts, just send me autocad drawing of the part. I can machine it for you. I have CNC mill and CNC lathe.

http://www.rc-tuning.com

http://www.yavruoyuncak.com

http://www.yavruoyuncak.com/urunler/rctuning06.htm

rc-tuning is my brand name and these are the links that you can see my chassis.

I...

I machined optional chassis from 4mm 7075t6 alloy and optional radio plate from 3mm

How are they looking?

I have a giant scale stepper with built in encoder.
I attached its image.
Is there any one know about this stepper? (amper torque etc.)

(I do not use it. If someone wants to buy it please...

Today I tried an electronic easy made circuit with "CNY70 Reflective Optical Sensor with Transistor Output" The circuit contains only two resistor and CNY70.

You can download CNY70 datasheet from...

To ESjaavik:

Thank you for you warning. I ordered L6208 and today they arrived. I will try them tomorrow...

I agree about rated voltage problem. I used 24volt transformator, With rectifier and capacitor, it gives very near to L298's rated voltage.

However I am sure about L6208. you can download its...

Is there anyone familiar to ST 6208 DMOS DRIVER FOR BIPOLAR STEPPER MOTOR IC?

I use L297 - L298 for driving steppers. However several times I blown 297 / 298. Some times 5volt supply coused the...

I bought some carbide endmills and tried them. one of them give best result. I cut 7075 at 3000rpm 50mm/min feed and 4mm depth with 3mm 3 flute. result was good, chips are uniform.

The...

I will go to my workshop and try your suggestions. thank you

my mill can turn 3200rpm max. It has PWM speed control. therefore I can control speed continuously from 100 rpm to 3200 rpm.

I will try 5% solution

What is the name of your coolant?

I am not sure about english name of boron oil. It is a machining fluid that is used by mixing water. It looks like engine oil, after mixing water it goes into white color.

I tried 3mm cabide...

I ordered some carbide endmills today. I will try them and write some feedback here.

I used boron oil and water mixture as coolant. I mixtured boron oil with 1oil 3 water ratio. is there any one...

I am interested in milling 7075 T6 sheet material at 4mm thickness. I have some experience on milling aluminum alloys. for example I milled 5086 H32 alloy with 3mm endmill at 2000rpm and 70mm/min...

Thank you for suggestions. My spindle is limited to 3200rpm.

I calculated s1000rpm and f113.8mm/minute from your data.
I will check that feed rate today. I will post the result.

There is no...

To Cold Fusion:

What do you mean by "I'm in the RC car business"
Do you produce some spares or sell some parts or kits?

I am racing at Turkey for 4 or 5 years as hobby. But I am very new at CNC and machining.

I wanted to use 7075 T6 alloy 3mm thick (0.118 inch) however it is not possible to find that material in my...

Thank you,

Here is an other picture of the chasis

The chasis at left side which is unmounted is my product.

As you can see I reinforced front of the chasis by making the hole smaller.

I cut both Serpent Impulse and 705 chassises with Optimum BF 20 vario mill (and my cnc conversion of course)

Is there any one else who cuts aluminum RC parts?

thanks for quick replies.

For Al_The_Man: you can see detailed pictures of encoder side at http://gunol.otocamlibel.com/cnc/servo it looks like something magnetic.

I will check this encoder...

I built a cnc controller for steppers and I converted an Optimum BF-20 mill to CNC with this stepper controller and Art’s Mach2. Some picture can be seen at http://gunol.otocamlibel.com/cnc
...

I am using mach2 too. I use a 3 axis 2 button joystick to jog X and Y axises. However I can not jog Z axis via joystick.

I couldn't find any setup menu about joystick at Mach2. Is it possible to...