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Type: Posts; User: jfroux_1

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  1. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    I gave up on the RP this morning and I put back the 10 hp with the smaller pulley and it drives my T30 with very good results since I increased the cp starter by 74 uf. The breaker doesn't open...
  2. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    Hi Jim, the number I put were with the 10 hp running the T30. I gave up on the 5 hp this morning. When I'll find a cheap smaller pulley I may try again just to see. But with the 74 uf I added on the...
  3. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    I just notice that the incoming voltage varies between 233 to 245 here.
    I’m having a hard time trying to balance the voltage in load. There is one thing for sure, the extra 74 uf I added on the...
  4. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    Hi Jim, I used the right sequence. But I now remember that I wasn't able to balance the voltage right in 2018 and I ended with a poor voltage balance to be able to start the 10 hp motor. Today, I...
  5. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    Hi Jim,
    I’m about to give up on the idea of running a rotary 10 hp convertor. I can’t find the pulley spec for my T30 2540. Maybe my 10 hp motor is not good enough for the project. I get better...
  6. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    Since May 2018, I’ve been using a 10 HP 3 phase that I run on single phase. It works but the breaker trips once in a while.
    I just got a 5 Hp 230/460 and I ran my 10 HP 3 phase as a rotary...
  7. Re: Convert the Bridgeport milling into a CNC machine

    I love that trailer. The winch load the milling on the trailer but the it was a bit too mutch for the car......
  8. Convert the Bridgeport milling into a CNC machine

    https://www.cnczone.com/forums/attachment.php?attachmentid=422474&stc=1https://www.cnczone.com/forums/attachment.php?attachmentid=422476&stc=1

    An other Bridgeport CNC projet. I bought this milling...
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    Re: Bridgeport ballscrew retrofit, design the yoke

    Daroc30, the price is impressive! Other than the price, how can you compare the accuracy for the x and y when you compare to a Bridgeport CNC equipped with a Hiwin setup? I’m sure that those cheap...
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    Re: Bridgeport ballscrew retrofit, design the yoke

    350 $CAD shipping included !! ??
    I’m just a hobbyist, and to tell you the true my Bridgeport is a new tool to me. I really want to convert my BP into a CNC at the lowest cost possible and get a good...
  11. Replies
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    10,995

    Re: Bridgeport ballscrew retrofit, design the yoke

    William, can you explain to me why and how the 25mm screws didn't work as good as the Hiwin retrofit. I understand that the 25 mm screws are smaller compare to the Hiwin retrofit but if both systems...
  12. Replies
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    10,995

    Re: Bridgeport ballscrew retrofit, design the yoke

    Thanks for your comments. It does help me.
  13. Replies
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    Software package CAD CAM

    I’m hobbyist and I’m new to the CNC world.
    I’d like to work what is the best software package CAD CAM at the lowest cost (free is possible)
  14. Is it possible to get Mach3 full version for free?

    Is it possible to get Mach3 full version for free?
  15. Replies
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    10,995

    Re: Bridgeport ballscrew retrofit, design the yoke

    I need your help and advices. I want to install ballnut to my manual Bridgeport that I will convert to CNC milling at low cost.
    If I understand from your experience, I need to buy 25 mm ballnut with...
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    Re: Convert Brideport into CNC milling

    Thanks for the safe advices Andrew. I still hope I'll find a way to convert my Bridgeport at low cost. I saw those drop-in ball screw kits but they are too expensive for my budget. I hope I'll find a...
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    Re: Convert Brideport into CNC milling

    Thanks Mactec54, I'm in Québec but I asked a quotation to Dmm.
  18. Bridgeport cheap ballnut in the factory yoke

    I’m hobbyist and I need your support to convert a Brideport into a CNC milling at the lower cost possible.
    First, I have to remove the backlash. Can I remove the old factory screw and replace it...
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    Re: Convert Brideport into CNC milling

    I double check the backlash on my BP and it is more like 0.010. I’d like to go with ball screw. What is the lowest cost option?


    For the link between the AC servo motor and pc, is it possible...
  20. Replies
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    Convert Brideport into CNC milling

    I’m hobbyist and I need your support to convert a Brideport into a CNC milling at the lower cost possible. The backlash on my BP is 0.005.


    I’m planning to buy AC servo motors with drive from...
  21. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    You are right. Or maybe I'll use this 10 hp 230/460 as a rotary converter and get a 7.5 hp 230/460.
  22. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    This project is killing me... when there is no load, it works with the starter relay. At small load it works. But with more load it does't work. The starter relay kick off too soon, the motor is not...
  23. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    Thanks again Jim. I just found out that when the compressor stop it takes a while before the relay reset. Under normal operation condition I don't think it will be a problem but when I test the...
  24. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    I found a 3 phase contacter with the right coil voltage and I put everything in an aluminium box but I don't remember how to wire the starter relay switch and it is giving me a hard time. When I use...
  25. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    Thanks again Jim, it looks like I'll have to spend some money... I hope I'll find something cheap.
  26. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    Some can help me to connect my magnetic switch? It is a 3 phase switch that I run on one phase (see pic). I put a wire from 4T2 to 5L3, a wire from 95 to A2, a wire from 1L1 to 3. a wire from 4 to 96...
  27. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    It is good to have someone like you. I tried to reduce the capacitance on the T1-T3 and I got better voltage balance but the motor had more difficulty to start with pressure in the tank. After few...
  28. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    Many thanks to you Jim. :cheers:
  29. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    Full load I get T1-T2 231v T2-T3 232v and T1-T3 249v. I'm not sure what to do to get better balance. The starter relay didn't work because I first did a mistake when I connected it. Everything is...
  30. Re: Need help! Balance voltage rotary converter motor 7.5 hp

    so far so good. But I can't operate with the starter relay... I have to use the manual switch to activate the start capacitor. 120 psi stop and start ok.
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