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  • #164785
    jonathon cary
    Participant
      @jonathoncary61666

      I want to buy a 1/2 hp motor for 2 elderly motorless small machines I have but am not sure which..Either a Clarkes which is about £110 or other new ones on ebay which are capcitor start and run for about £70.Wondered if the latter tupe would be ok and last a while..I know cap run types are used in washing machines so should be adequate for my light use..Thank you

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      #23515
      jonathon cary
      Participant
        @jonathoncary61666

        cap or not cap!

        #164786
        jonathon cary
        Participant
          @jonathoncary61666

          my phone types all sorts for ? signs!

          #164787
          jonathon cary
          Participant
            @jonathoncary61666

            pounds sterling

            #164810
            Les Jones 1
            Participant
              @lesjones1

              Hi Jonathon,
              I suspect that Clarke do not make motors.They probably get a motor manufacturer to make them an put a Clarke badge on them. I would not pay £110.00 for a 1/2HP Clarke motor when Machine Mart sell the 2 pole one for £75.79 and the 4 pole one for £83.98 The Clarke motors look like they have two capacitors so there is no difference in the specification. If I was buying one I would get the one on Ebay. (I spotted one at £68.00) Most of the new motors on Ebay seem to be manufactured by TEC (Chinese.) I bought a 1HP three phase TEC motor and it works fine and looks well made. By the way I have never seen a washing machine with any type of induction motor fitted. All the ones I have seen have a series wound motor. (Also called universal.)

              Les.

              #164812
              Phil Whitley
              Participant
                @philwhitley94135

                I would pop down to the local electrical engineers or rewinders, they will probably sell you a British made 1/2 hp for about £25 to £50 second hand, far bttr bet than italian or chinese. I have noticed that some of the Clarke motors hum very loudly which is a clear indication of a poorly wound and therefore inneficient motor.

                Phil

                #164847
                Ian S C
                Participant
                  @iansc

                  All the old wringer type washing machines had either 1/4 or 1/3hp induction motors, split phase ie. no capacitor. The Hoover Twin Tub of the same era had universal motors. Here in NZ, if you pay more than $NZ25 you'r being ripped off for an old 1/4hp motor. If there is a bit of a load to start against maybe cap start would help, but I run my wood lathe on a 2/3hp split phase motor ex an old petrol bowser (it's flame proof).

                  Ian S C

                  #164883
                  jonathon cary
                  Participant
                    @jonathoncary61666

                    Thank you for the info Phil..Clarkes/Machinemarts need a starter which is ?25 extra..Tec is what I was looking at and most likely..
                    A local electrical engineer who can rewind motors could be difficult to find around Cambridge, No one here but great thinkers!
                    I hope i never need it fireproofing!!

                    #164886
                    martin perman 1
                    Participant
                      @martinperman1

                      Try here http://electricmotorservices.co.uk/index.php?region=cambridge or herehttp://www.cambridgerewinds.co.uk/

                      #164887
                      Neil Wyatt
                      Moderator
                        @neilwyatt

                        FWIW I have a 3-phase 1/2 HP Tec from Transwave on my lathe and it's smooth as silk.

                        Neil

                        #164891
                        Les Jones 1
                        Participant
                          @lesjones1

                          Hi Jonathon,
                          In your post at 13:54 you imply that Clarke motors need a starter and others do no. All induction motors should be used with a starter which provides overload protection and a no volt release function (To prevent it starting by itself after a power failure.) A lot of people use motors without overload protection and even without a no volt release switch.

                          Les.

                          #164915
                          jonathon cary
                          Participant
                            @jonathoncary61666

                            Hallo Martin.Didnt see you at Haddenham this year..

                            #164918
                            martin perman 1
                            Participant
                              @martinperman1

                              I was there with my Lister A, not in the main area as when I turned up early Friday morning there was no longer any space so I and others were put between the Rally office and Craft tent.

                              Martin P

                              #164920
                              daveb
                              Participant
                                @daveb17630

                                The motor starter from Machine Mart does not have no volt release, it's just a push button switch with (perhaps) a thermal trip. Tool Station stocks reasonably priced DOL starters and overloads, the case and insides are fine but the moulded push buttons are a bit fragile.

                                #164923
                                jonathon cary
                                Participant
                                  @jonathoncary61666

                                  glad I found this forum.With my electrical knowledge I d have put a plug on it and,well, plugged it in

                                  #164938
                                  Les Jones 1
                                  Participant
                                    @lesjones1

                                    Hi Jonathon,
                                    I've just noticed that there is a 1/4HP motor for £15.00 in the "for sale" adds on this site if it is powerful enough for your needs.

                                    Les.

                                    #164960
                                    jonathon cary
                                    Participant
                                      @jonathoncary61666

                                      Thanks Les..1/4 may be a bit small..I m looking ahead..Ordered a 1/2 hp TEC ..DOL starters seem reasonable price so should be ok..Thank you everyone
                                      I did nt look that far for stationary engines Martin.I will next year ,hate missing any

                                      #165031
                                      Chris Denton
                                      Participant
                                        @chrisdenton53037

                                        http://www.inverterdrive.com are good for motors.

                                        Edited By Chris Denton on 29/09/2014 17:02:08

                                        #165126
                                        Howard Lewis
                                        Participant
                                          @howardlewis46836

                                          Jonathon,

                                          If you are in Cambridge, UK, you might like to contact Shoebridges in Stanground, Peterborough. They rewind and repair motors, and so could help, if only with advice. And they are about forty miles away.

                                          They got me out of trouble, saving buying a new motor, when I thought that the motor on my Myford had gone west.

                                          Howard

                                          #165140
                                          jonathon cary
                                          Participant
                                            @jonathoncary61666

                                            motor arrived but no starter yet..Having found the cheapest one at ?39 I m not buying one! If I have to I ll take the mitor out of our old Henry(hoover!) and use that until I feel rich again(again!) Is there something unpleasant or dangerous happens to motors which dont use starters..would a low power circuit breaker help? ?Henry never had one..

                                            #165143
                                            Neil Wyatt
                                            Moderator
                                              @neilwyatt

                                              Hi Jonathon,

                                              The function of starters as 'stoppers' is perhaps more important than as starters.

                                              Their 'no-voltage release' safety function is to stop the machine starting on its own when power is reapplied, obviously the potential; for destruction and mayhem is much less with a vacuum cleaner than a lathe.

                                              Neil

                                              #165148
                                              Les Jones 1
                                              Participant
                                                @lesjones1

                                                Hi Jonathan,
                                                A fuse or normal circuit breaker will not protect the motor. The reason for this is that motors take a much higher starting current than running current. A fuse or circuit breaker that will not blow / trip with the stating current will be rated too high to protect the motor when running. A starter has over current trips that are slow to respond so that they do not trip with the high (but short duration.) starting current. They are normally a heating element wrapped around a bimetal strip which bends when it gets hot and trips out the starter. Another method is a solenoid damped with an oil filled dashpot. Many lathes sold do not have over current protection. This is not too bad with a manual lathe as you would notice it slowing down if overloaded and you could switch it off. A no volt release is more inportant on a lathe for safety reasons. (An NVR is much cheaper than a starter with overloads.) You have not given any indication of the type of device you are driving with the motor. This information would help people give advice what kind of protection is required. Neil's example of a vacuum cleaner is one where an NVR is not that important as you would be unlikely to have your fingers in the fan assembly.

                                                Les.

                                                #165163
                                                jonathon cary
                                                Participant
                                                  @jonathoncary61666

                                                  A flexispeed milling machine and home made hack saw so far..A smaller motor would have done but I m thinking ahead and a 1/3 hp was very little less money..
                                                  I admit I do find electicity completely baffling but itsounds best to leave Henry alone and spend more..safety is paramount..Thank you very much

                                                  #165169
                                                  martin perman 1
                                                  Participant
                                                    @martinperman1

                                                    Johnathon,

                                                    Here is a no voltage release for around £6.00 its rated for 1hp which will be more than enough for you http://www.axminster.co.uk/axminster-kjd6-switch?gclid=CjwKEAjwqamhBRDeyKKuuYztxwQSJAA1luvGCS48zzTxuIJIF4AqurmGaCM4XeY_pxj9jIUDJepsERoC36Tw_wcB

                                                    PM me if you need anymore assistance.

                                                    Martin P

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