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Post by starider on Dec 19, 2011 0:00:44 GMT
:)Hi,knowing the broad knowledge within the DAF fraternity,I was wondering if anyone can help.I have just bought and installed a second hand Tecalamit Spacemaster Mk V lift.It came with a 3 phase motor and I'm looking to find somewhere to purchase a single phase motor to fit.I can get one from a Tecalamit specialist, but at an arm and a leg!!Unfortunately the service plate on the motor is totally illegible,all I know it's a 1hp. HELP!!!! starider.
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spunkymonkey
Likes DAFs
Currently waltzing Matilda
Posts: 3,482
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Post by spunkymonkey on Dec 19, 2011 13:33:45 GMT
Hi Tony, Machine Mart stock a pretty comprehensive range here: www.machinemart.co.uk/shop/range/details/230v-110v-single-phase-motors/path/single-phase-electric-motorsA couple of points to note though: If you're changing from three phase to single phase, you really need a "4 pole" single phase motor. They run at half the speed of the (generally cheaper) 2 pole ones which means they create more torque for the same power rating. Because 3 phase inherently has much smoother torque than single phase (single phase torque varies a lot during each revolution) it would also be well worth looking at a higher power rating (1.5 or 2 HP) assuming your electrical supply will allow you to - their 2HP 4 pole version needs between 10 and 16 amps for starting so shouldn't ( )be run from a standard 13 amp ring mains. If you use a "same-power" single phase you may find that it sometimes doesn't want to lift or lower if the motor happens to have stopped at one of it's "weak" positions. That's less likely to be a problem if it's hydraulic rather than a straight mechanical lift btw
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Post by starider on Dec 19, 2011 20:11:06 GMT
Hi,thanks for that,the lift is hydraulic and as the pump needs to be mounted under the motor, size could be critical.It will be wired in on a seperate supply with the appropriate heavier cable etc.I take the point about a larger HP motor.Will let you know how it goes. starider
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spunkymonkey
Likes DAFs
Currently waltzing Matilda
Posts: 3,482
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Post by spunkymonkey on Dec 19, 2011 21:00:56 GMT
For a hydraulic unit you'll probably be ok with the same power, Tony. It's easier for the motor to spin up a pump than it is to start turning lead screws. Also, the pump won't be doing anything when it comes to lowering so no risk of getting things stuck in the air if it's low on power (yes, that HAS happened to me and it's no fun at all!)
If really needed you can always plumb a bypass valve into the hydraulics so that the pump starts under no load, then shut the valve to start lifting but remember that's one more bit of hydraulics to maintain!
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Bob Scrivens
Likes DAFs
Ex owner of the green machine
Posts: 534
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Post by Bob Scrivens on Dec 19, 2011 23:00:49 GMT
Hi Tony agree with what Joe has said, best bet is to take your old motor off and with you to machine mart or RS Component or electric motor factor, they should be able to give you a motor with the correct shaft coupling and base fixing. The other way was to fit a Single Phase to 3 Phase mains convertor with soft start and to use the old motor (These were great on direct drive units)
Bob
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Post by starider on Dec 26, 2011 11:44:15 GMT
Hi,not any real luck with a single phase motor to replace the 3.The dimentions are impossible to match,have been in touch with several suppliers with a huge range of motors to no avail.I have been advised to fit an inverter which I have purchased.I now need to read through the instructions to fit and wire.The main problem with trying to find a motor was the shaft diameter was critical for fitment of the hydraulic pump and motors with the right shaft dia.weren't powerful enough.I am assured that the inverter will do the job!! starider
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Post by starider on Jan 9, 2012 23:36:52 GMT
Hi,at last a lift that works, used it today to fit the winter wheels and tyres to the Suzuki Vitara,it was great to work at waist height instead of grovelling on the floor.The inverter[or driver] works well,the model I have allows the speed of the motor to be varied, so the speed of ascent can be controlled.It was around one third the cost of a motor[if one had been available].So one happy aging motor engineer. starider
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