|
|
|
|
|
|
I now have the space, and some money set aside for a 4 post car lift. Most second hand lifts advertised seem to be 3 phase, I only have single phase. What are the options, I've heard of capacitors or something used to convert, is this an old wives tale? is it practical, or do I need to go for a (more expensive) single phase. Thanks.
|
| |
|
|
|
|
ian65
Part of things
Posts: 276 
|
|
|
|
|
|
| |
Last Edit: Jul 7, 2017 20:23:45 GMT by ian65
|
|
|
|
|
|
|
|
|
My 3 phase compressor runs from my single phase supply via an invertor - I had to go 3 phase for the size of the motor to drive a 3 stage 23 cubic foot minute pump and not just because a 3 phase compressor was cheaper (custom built to my spec and at £3500 was not cheap)  An invertor will certainly do the job for you but before you go down that route would not a two post lift do the job for you ? these are plentiful in the market in single phase mode - even new fully guaranteed ones are sub £2k |
| |
Last Edit: Jul 7, 2017 20:36:06 GMT by Deleted
|
|
hario
Part of things
S202 C300STD
Posts: 421
|
|
Jul 10, 2017 22:15:00 GMT
|
|
You could buy a 1ph motor with the same frame size and shaft detail as the currently fitted 3ph motor, but you'd have to convert the control switched and limit switches to 1ph configuration. Would likely be loads cheaper than an inverter imho
|
| |
*S202 C300TD Wagon*
Installed:
OM606 & 722.6, Evo6 IC, S600AMG callipers & 345mm rotors. No catz. Leatherish seats.. Rust..
Future:
DIY manifolds & turbo compound build.
Built IP, & some kind of software. Less rust..
|
|
|
|
|
Jul 10, 2017 23:05:41 GMT
|
Just looking at a different lift for my own workshop but this company do brand new 4 post lifts that are single phase which start at £2,700 including vat - don't know what a used 3 phase lift plus the conversion is going cost or how much hassle it is going to be but I think the above price for a new one with warranty is pretty fair value for money - link below sm-t.co.uk/product/findhorn-4-post-lift/ |
| |
Last Edit: Jul 10, 2017 23:09:11 GMT by Deleted
|
|
fad
Posted a lot
Posts: 1,781
|
|
|
|
|
There are ways of DIY 3 phase but if please don't attempt it if you aren't qualified, especially not with capacitors, that doesn't work for what you want. Your options are:
Inverter (£££)
Contacting your electricity supplier and asking how much to connect to three phase (can be cheaper than inverters but can be eyewatering depending on how far you are from the other two phases that your supply is on)
Buying a single phase lift
Swapping your 3 phase motor for single and changing your control board is only an option if you really know what you are doing (no offence meant there, but google/forums is not the best place to "learn" what to do. Though your control board is likely run from one of the three phases, I have very little experience with such things so can't advise how you might reconfigure your switchgear) and the cost of single phase motors is lots and lots compared to 3 phase so it may turn out to be cheaper, but could be expensive depending on the size you need.
|
| |
Last Edit: Jul 11, 2017 5:21:13 GMT by fad
|
|
berendd
Europe
why do I need 3 keys for one car?
Posts: 1,449
|
|
|
|
|
Inverter works fine, swapping the motor for a 1 phase usually does not.
1 phase motors can't develop the same torque from standstill a 3 phase does, so in most cases a far bigger 1 phase motor is needed which will blow your fuses.
Had my 3 phase compressor on an inverter, worked absolutely fine.
|
| |
|
|
hario
Part of things
S202 C300STD
Posts: 421
|
|
Jul 11, 2017 14:01:13 GMT
|
|
|
| |
*S202 C300TD Wagon*
Installed:
OM606 & 722.6, Evo6 IC, S600AMG callipers & 345mm rotors. No catz. Leatherish seats.. Rust..
Future:
DIY manifolds & turbo compound build.
Built IP, & some kind of software. Less rust..
|
|
fad
Posted a lot
Posts: 1,781
|
|
Jul 11, 2017 14:34:02 GMT
|
|
Depending how much grunt you need they can work but can get £££.
How about a 3 phase generator?
|
| |
|
|
|
|
|
|
|
Jul 11, 2017 14:38:16 GMT
|
|
converted mine by changing the motor, the standard motor was not that powerful (around 1hp) so no problems with finding a 1ph which runs off a 13A supply. The 1PH motor was much bigger though so the motor /pump case had to be modified to make it fit.
Mine had no control board just a relay which had to be changed and some limit switches which still worked fine (only flow a tiny current to control the relay).
|
| |
|
|
slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
|
3 phase electricsslater
@slater
Club Retro Rides Member 78
|
Jul 11, 2017 15:26:42 GMT
|
How is 660quid cheaper than an inverter.. Just keep your eyes on eBay. Second hand vfds come up all the time. 50-100quid for a small one no bother. |
| |
|
|
hario
Part of things
S202 C300STD
Posts: 421
|
|
Jul 11, 2017 16:46:33 GMT
|
How is 660quid cheaper than an inverter.. Just keep your eyes on eBay. Second hand vfds come up all the time. 50-100quid for a small one no bother. Insane! They were thousands a few years ago.. |
| |
*S202 C300TD Wagon*
Installed:
OM606 & 722.6, Evo6 IC, S600AMG callipers & 345mm rotors. No catz. Leatherish seats.. Rust..
Future:
DIY manifolds & turbo compound build.
Built IP, & some kind of software. Less rust..
|
|
|
|
|
Jul 16, 2017 23:28:00 GMT
|
|
I don't have a lift but I do have a lot of 3 phase equipment.
I run it all using a Phase converter, the old fashioned box of capacitors and transformer with a motor to make it a rotary type.
They are an option that you might also find cheaply second hand.
There is no doubt that an Inverter is much better technology now that they are available for sensible money. I think that would be the way I would go in your situation unless a cheap converter comes up.
I wouldnt bother changing a motor and wouldnt pay a lot more for a single phase machine.
I priced having a 3 phase supply put in years ago and it wasnt too bad but that would be OTT for your situation.
|
| |
|
|
fad
Posted a lot
Posts: 1,781
|
|
|
|
|
How much were you quoted to get a three phase supply?
|
| |
|
|
|
|
|
Jul 17, 2017 22:10:13 GMT
|
|
Damn, I thought I'd replied to this earier but I mustn't have pressed to post.
It was a good 15 years ago and I cant remember, although I do have the info somewhere.
It wasnt much more than £1k though, although I had to provide a duct to get the cable inside the garage then they would come and install and terminate.
I think I'll be moving house in a few years, hopefully to somewhere I'll stay for good, I'll seriously consider having it done then.
|
| |
|
|
|
|
|
Jul 17, 2017 22:50:20 GMT
|
|
Hi, The price depends on how far away the other two phases are, they might be out in the road or up the end of the street.
Colin
|
| |
|
|
|
|
|
Jul 18, 2017 20:02:16 GMT
|
|
In my case there is a lamp / power post within 10 feet of the garage, maybe its got the other phases and hence the low cost to get them into the garage.
There does seem to be more than one phase outside, amusingly a neighbour used to complain when I used my lathe or welder because his lights would dim, the houses were on a shared supply, one cable to my main fuse and another from my fuse to his.
I talked to the board about solving this and for free they separated our supplies.
Anyway, we used to have occasional power cuts, maybe twice a year, but shortly after the new supply to the house was installed when the next power cut came all the houses in the street were in darkness except mine, its happened other times too, so thanks to that complaining neighbour I had electricity when he didnt.
I'm going to guess that one of the other phases was out there passing to maybe the next street and they put that to my house to solve the voltage drop problem.
|
| |
|
|
|
|
|
|
|
|
Do you still have to pay a higher connection price for a 3p connection in the UK? I just ask as if you have to pay a higher fixed rate but will rarely use the 3p, it might be cheaper long-term to go down the inverter / converter route.
|
| |
|
|
|
|
|
|
|
have used this place several times, they are really nice people and cheap too www.newton-tesla.co.ukI did hear they buy all the old stock and sell it heavily discounted but still guaranteed. I am certain they would supply instructions too |
| |
It will come in handy even if you never use it
|
|
|
|
