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Type: Posts; User: gallegos

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  1. Replies
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    Are you sure its not stainless?? Either way I...

    Are you sure its not stainless?? Either way I would mig it but it would probably be a lot nicer looking if you could tig it
  2. I have not had any luck with a vfd on my clutched...

    I have not had any luck with a vfd on my clutched machines... even oversized it trips at higher spindle speeds. In the end i set mine up so that when i pull the lever to engauge the clutch the motor...
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    Motor torque is fairly constant across the speed...

    Motor torque is fairly constant across the speed range of a VFD so power drops linearly with a reduction in speed. Depends on how you plan on using it but you might have to change belts anyway if...
  4. Replies
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    22,935

    I'm lucky enough to have an excavator... but my...

    I'm lucky enough to have an excavator... but my shed is too low to actually get stuff inside so its back to rolling it on pipes to get it inside.
    308641
  5. I have used a number of danfoss drives at work...

    I have used a number of danfoss drives at work and they have been a good thing... easier to set up than some others and have proven very reliable.
  6. Replies
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    15,783

    Freebie from a motor rewinder would be worth a...

    Freebie from a motor rewinder would be worth a shot but you can buy new plastic ones from a motor rewinding supplies shop if that fails...
  7. Replies
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    21,774

    I use my grinders one handed regularly and in...

    I use my grinders one handed regularly and in most situations I don't see it being overly risky... situations when the disc can grab and it will kick toward you are different.

    I reckon the most...
  8. Ben called me a fair while ago about the problems...

    Ben called me a fair while ago about the problems I posted having with some of his grinding discs. Apparently there was a batch of duds a while ago that were too hard that had a few complaints. He...
  9. Replies
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    I'm also interested to see results on this.......

    I'm also interested to see results on this.... Particularly at high frequencies.

    I think the most useful info would be input to the vfd vs mechanical output of the motor as it will give the total...
  10. Replies
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    68,623

    Based on what I've seen with mine I don't think...

    Based on what I've seen with mine I don't think you will have any issues with the size of your VFD. I work to limit the current on the input side to the nameplate rating because I figure the most...
  11. Replies
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    68,623

    The holding on to stuff bit i have down pat.. I...

    The holding on to stuff bit i have down pat.. I just struggle when it comes time to find it again.

    8 hours confined space training... thats impressive. I wouldnt have thought any organisation...
  12. Replies
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    68,623

    I finally found my leftover cable. Have maybe 2m...

    I finally found my leftover cable. Have maybe 2m of 12awg in few pieces and maybe a metre of 16awg 200. You can have it if its of any use. It 200 degree rated silicon sheathed.

    Neil
  13. Replies
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    68,623

    I'm not sure if i was clear about what i mean by...

    I'm not sure if i was clear about what i mean by running12 leads from the windings to the junction box, you end up with 2 wires internally from the motor under each of the 6 posts on the terminal...
  14. Hi Ben, I got a PM but there was no text in the...

    Hi Ben, I got a PM but there was no text in the message. Anyway I use 100mm grinding discs.

    neil
  15. Replies
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    68,623

    I ran extra leads from the point i split the...

    I ran extra leads from the point i split the windings so I ended up with 12 leads from the windings in the junction box. If the existing leads up to the point they join are long enough to reach to...
  16. Replies
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    68,623

    Glad the books helped. What I did at this...

    Glad the books helped.

    What I did at this point was cut the ties and pulled the leads away from the coil end so I could trace the links beween the coils. I ended up with a drawing for each of the...
  17. Replies
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    20,776

    I have used mineral turps because I'm to cheap to...

    I have used mineral turps because I'm to cheap to use the proper lectra clean spray and the internet told me it was more or less the same.... It worked fine. I would be a little reluctant to use...
  18. I've used hundreds of the 125mm diameter 1mm...

    I've used hundreds of the 125mm diameter 1mm thick discs and found them great. I've also used the 125mm flap disks, and while not quite as good as joscos i reckon they are good for the price and...
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    11,880

    If the runners are thick enough I would just tack...

    If the runners are thick enough I would just tack weld 3 feet to the runners and clamp the feet down after you have shimmed them to get it aligned how you want. Big bits of channel at either end of...
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    8,890

    As others have said sounds like an out of balance...

    As others have said sounds like an out of balance problem if it gets worse with speed.
  21. Replies
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    68,623

    Cant remember the size of the hole in the...

    Cant remember the size of the hole in the ammeter... They used to be slightly different with a smaller toroid attached to the back but it still it fit a 6mm2 cable comfortably. You only need to run...
  22. Replies
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    68,623

    This is the vfd im running Variable Frequency...

    This is the vfd im running

    Variable Frequency Drive Inverter VFD 7 5KW 10HP 34A | eBay

    And the ammeter

    Blue Digital Voltmeter Ammeter AMP Current Volt Voltage Meter Panel 300V 50A | eBay
  23. Replies
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    68,623

    Yeah... If you only have 6 leads coming from the...

    Yeah... If you only have 6 leads coming from the motor into the terminal box you will find one of the leads will go to each of these points Inside the motor and split. If you are going to open it up...
  24. Replies
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    68,623

    My mill and lathe are both 7.5hp and are running...

    My mill and lathe are both 7.5hp and are running 240v 3 phase from a 10 hp vfd that is fed with single phase. I will explain what ive done and maybe it will help you.

    My research when i was...
  25. Replies
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    As other have already said big as possible... I...

    As other have already said big as possible... I have a 3hp compressor which I think is around 15 cfm which is good for most air tools and painting but doesn't even come close to being usable for my...
  26. Replies
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    And have a look here for ideas of cost ...

    And have a look here for ideas of cost

    Trailerparts Kit

    4000kg tandem kit about $3800
    3000kg tandem kit about $3000
    2000kg tandem kit about $1500
  27. Replies
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    19,063

    Just to clarify... You can build a trailer up to...

    Just to clarify... You can build a trailer up to 2000kg with brakes on one axle and a hydraulic overide setup. I'm pretty sure this is what you meant Yonnee but I took it differently the first time I...
  28. Replies
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    25,349

    Axial capacity of ball bearings is usually a...

    Axial capacity of ball bearings is usually a small fraction of radial capacity... I think pulling the outer race will defintely stuff it.
  29. I have a piece of shaft that I want to use that...

    I have a piece of shaft that I want to use that is about 90mm diameter so a 90mm bearing might work perfectly.... just need to check the size of the shaft properly. I've been a bit conservative with...
  30. I have a piece of shaft hanging around I could...

    I have a piece of shaft hanging around I could use for this already but im pretty sure its just low carbon steel. Case hardening is not something i've tried before so not sure how much successful it...
  31. yeah was just looking around a bit more and found...

    yeah was just looking around a bit more and found a 3.25"IDx3.75"ODx6"HIGH cast bronze bush for $60 bucks from ASB Bearings in the states. As long as shipping isn't extortionate that might be the...
  32. Cheap bushing/bearing options for an 85mm shaft?

    I'm in the process of designing a tube bender and am trying to find a cheap option for the shaft bearings/bushings. The plan is to make something very similar to a jd2 model 53 except that instead of...
  33. Thread: Build a Mill?

    by gallegos
    Replies
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    13,351

    Set up a saved search in gumtree and ebay and...

    Set up a saved search in gumtree and ebay and keep an eye on the machinery auctions and something will turn up eventually that suits you and is the right price . Even starting with a damaged or...
  34. Replies
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    Sticky: Just got a big package of mill tooling from ctc...

    Just got a big package of mill tooling from ctc today. Havent had a chance to look at it but its very well packaged as always. After not getting a response to emails about surface shipping I sent...
  35. Replies
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    Got a big russian record player today...needs a...

    Got a big russian record player today...needs a bit of love but doesn't seem to be any major problems. Its 400mm diameter so a little worried it might prove to be a bit too big.
    289712
    289713
  36. I've seen the same numbers mentioned... 3463L for...

    I've seen the same numbers mentioned... 3463L for 6.8kg CO2 (at 0 degrees celcius and 1 atm) and 4000L for E size argon (at 1 atm and an unspecified temperature). I pay $30 for a CO2 fill vs around...
  37. Thread: Metal stairs

    by gallegos
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    12,135

    My understanding is that galvanisers don't like...

    My understanding is that galvanisers don't like things with sealed voids because they can explode when in the bath due to the heat expanding the trapped gas... might be worth checking with the...
  38. Replies
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    7,317

    I'm actually fabricating front uprights for the...

    I'm actually fabricating front uprights for the suspension on a hill climb car i'm building. The stub will be machined round with a slight shoulder on the end and be a press fit in from the back of...
  39. Replies
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    7,317

    Stub axle welding procedure

    I need to weld some 45mm square stub axles for some uprights I'm building and I'm having had trouble finding the recommended welding procedure. Last time I did this I just preheated to 150 degrees...
  40. Replies
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    21,317

    If it needs to be engineered find an engineer who...

    If it needs to be engineered find an engineer who can sign it off and ask them to do the design based on your materials, then do the drawings yourself and get them to sign them off.

    My...
  41. Replies
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    There was a thread a few months ago about the...

    There was a thread a few months ago about the bullfinch and after i read it I got one from the uk. Its a ripper, al heap better than the old primus torch i had previously.

    Cost a bit over $200...
  42. Replies
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    22,777

    Mines about 2.8m high, which was as high as I...

    Mines about 2.8m high, which was as high as I could go while still clearing the lowest point inside the shed. Its about 1.8m wide, which was just the length of the offcuts of steel I had at the time...
  43. Replies
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    22,777

    I did a quick check and a 150UB14 should be good...

    I did a quick check and a 150UB14 should be good for about 2t with a span up to 2700mm being a little conservative.



    For short spans deflection is not usually an issue so personally I would...
  44. Replies
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    22,777

    Get an engine crane or build a roller gantry... ...

    Get an engine crane or build a roller gantry... As mentioned newer sheds really aren't suited to additional loads like this.

    This is the gantry i built for my shed out of left over 100UC i had...
  45. Replies
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    Generally the main issue is bending of the top...

    Generally the main issue is bending of the top beam. You can work out the bending stress as follows:

    Bending stress (MPa) = M / Z

    M is the bending moment in Nmm. Work this out using the length...
  46. Replies
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    11,949

    I remembered to look at CDCO and they seem more...

    I remembered to look at CDCO and they seem more reasonable priced than the others I've found. Any quality issues with this sort of stuff because I'm reluctant to buy from them again given most of...
  47. Replies
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    11,949

    Clamp kit is on the list, I will probably just...

    Clamp kit is on the list, I will probably just grab this locally...

    Sound like parallels are the go... can anyone suggest a supplier? The ones I have found seem expensive for what they are and...
  48. Replies
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    11,949

    Hi ueee It not wired yet but that bit should...

    Hi ueee

    It not wired yet but that bit should be pretty easy from here. What I ended up doing was stripping both motors and modifying the windings by splitting and paralleling to halve the...
  49. Replies
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    11,949

    What starter mill tooling?

    I bought my first mill a few months ago... a parkson no.3. Its taken a while to paint the shed floor and modify the motors to run off a 240v VFD but its just about ready to go. Only problem I have...
  50. Thread: Hoist

    by gallegos
    Replies
    22
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    13,318

    Chain blocks are better where you are using them...

    Chain blocks are better where you are using them for lifting and they need to be mounted at a height thats not easy to reach. lever blocks (come-a-longs) are more convenient for pulling horizontally...
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