Thread: Gav's 101.

Originally Posted by 350RRC

I've seen 3 phase created by plugging a 'magic box' into 3 single phase outlets.

Not my area of expertise by any stretch, but the road crew didn't blink an eye and it worked.

Ran the lights fine all NYE at a big local gig some years ago.

DL

Yes, but that still requires 3 phase power - they just use 3 x single phase plugs, each picking up a different phase. You see this at events when there is no 3 phase outlet close. Won’t work at your house just by plugging into 3 different outlets unfortunately. 😉

You can also use a rotary converter that converts single phase to 3 phase. For a lathe this big, that’s about $5K for a good one. Other option is a Single phase to 3 phase VSD - again, many thousands for the size required. Getting the 3 phase on at home is around $1500 - but that’s because I’m a Sparky. It would be well over double that to get someone in to do it. 😊

I have a 3 phase motor on mine , plugged into a single phase 15Amp power point . Using VFD , Brilliant bit of kit , Forward / reverse and infinite speed variation by adjusting the AC frequency .

something like this

ECO New Single Phase input to 380V 3 Phase Output Frequency Converter VFD VSD 891783368414 | eBay

Originally Posted by Homestar

Yes, but that still requires 3 phase power - they just use 3 x single phase plugs, each picking up a different phase. You see this at events when there is no 3 phase outlet close. Won’t work at your house just by plugging into 3 different outlets unfortunately. 😉

You can also use a rotary converter that converts single phase to 3 phase. For a lathe this big, that’s about $5K for a good one. Other option is a Single phase to 3 phase VSD - again, many thousands for the size required. Getting the 3 phase on at home is around $1500 - but that’s because I’m a Sparky. It would be well over double that to get someone in to do it. 😊

Thanks, didn't know it worked.

DL

Originally Posted by Homestar

Last of the parts cleaned and painted. Have a handful of bolts and washers to buy then I can do final assembly. A little bit each night helps in keeping things moving along. 👍

Oh, and here’s a pic of the first bit of heavy iron. It’s a monster and a lot bigger than what I need, but it will fit where I need it to in the garage and the last thing I would have wanted was to get a smaller unit then find it was just a bit too small.

Everything works on it it’s got some very nice features like rapids in both the main carriage and cross slide. Can cut just about every thread known to man including diametrical and modular (never likely to use those, but it’s got em). Had the lid off it, all gears in good condition, bed has wear as you’d expect but not aweful and I don’t need to do any close tolerance work with it.

Comes with 2 x 3 jaw chucks, a large 4 jaw, steady and travelling steady, face plate and a few spare chuck jaws. Got all the bits ordered to put 3 phase on at home so have the garage to clean out and some wiring to do before it comes home.

BLOODY 'ELL!

That is the sort of plant I'd love to have in my Sitting Room as a Conversation Piece, & when folk call I could be in the corner being anti social & spinning & screeching something up while coffee is being served from that neat little metal tray in front of the Head Stock while 'er indoors complains to guests about greasy boots & cutting oil all over the Persian Rugs & black hand prints over the William Morris Wallpapered walls..

But they'd certainly remember visiting.

A nice buy Gav. Just look at it as 'er Xmas Present to you if one complains.

she might find it more useful in the kitchen !

She might gb, but I reckon the risk of flattening any Victoria Sponge she puts in the oven might be at risk of not rising by the heavy vibrations of Gav doing some Aircraft Brake Drum Sets for a mate.

Weeeeeeelllll, it could happen.

Long drive to bring them over but if you find yourself in the area, no problems.

Originally Posted by goingbush

I have a 3 phase motor on mine , plugged into a single phase 15Amp power point . Using VFD , Brilliant bit of kit , Forward / reverse and infinite speed variation by adjusting the AC frequency .

something like this

ECO New Single Phase input to 380V 3 Phase Output Frequency Converter VFD VSD 891783368414 | eBay

Thanks - that’s actually not a single phase input unit. The specs show 3 phase input and when I asked the vendor about this he changed the title and told me to pretty much sod off. Not the most helpful person I’ve ever dealt with that’s for sure. 😁