Motor rotation?

[Bluechip]

Now, now Dave,  throwing 3 phase in there, that's cheating. 

Seriously though mine is still single phase, though I've had a 1.5Hp three phase motor in the garage, like forever...

Quite true. My apologies.  ... Really one phase and two bent bits ... 

Dave

[PJW]

Hi Dave is this right?
So if I swop the red wire that comes out of the motor with the white one & attach this white to the off of the switch.
The blue from the motor to the off of the switch
The red from the Cap to the forward/ rev
The Brown to the forward/rev terminals, this will give me for/rev on the motor?
Where would will the original on/off relay go?

[Bluechip]

PM sent ... key fingers overheating ... 

Dave

[PJW]

Thanks All for your input, I am sure it can be sorted out soon,

Peter

[Bluechip]

Alas, no go .. 

Motor is one of the wretched things I've met before. The stator is firmly fixed in one half of the casing. It is not possible to access the connections. I have warmed up the alloy casing and got a stator out once before but it's a fraught procedure I wasn't going to do on someone else's motor.

The windings do have different resistances, [ some 60R & about 110R ], so it's a fairly conventional cap. run type and it's not advisable to just try rewiring the cap. from the AUX winding to the RUN. It wouldn't be happy. 

Peter has a rather nice collection of engines which he is now going to show us no doubt.   

Off to sulk ..

Dave

[Don1966]

Yea Dave I was afraid of that.


Don

[PJW]

thank you so much Dave for taking the time to come over to help, you are a good egg!!!

[BaronJ]

Hello Peter, Guys,

Sorry to hear that your motor is unsuitable.  It is also likely that one or both windings are aluminum wire and breaking the joints would create more problems than it would solve.

If you have a friendly scrapyard nearby it might be advantageous to go and see if you can scavenge another motor.

There is supposed to be a picture attached of a motor that might be suitable for you.  It will reverse in exactly the same way as described in this thread.  It is rated 525 Watts at 2850 RPM.  Good luck.

Forgot to mention.  Under that cover is a bit of electronics, but there is only two wires to swap over.

[PJW]

that look just the job!!!

[Stuart]

Peter

Is the motor symmetrical end for end with the stator if it is then could you not pull off the end bells turn the stator end for end so the shaft is at the other end in respect to the stator , then it will be reversed

It's like left hand single point threading the spindle rotates the same way ( as would the wiggly lecky bits ) but you start your thread at the chuck end

Or just look at the motor from the shaft end if it's clockwise then the other end is anti clockwise


Glad Dave popped over he's a good guy knows his stuff

Stuart

[PJW]

the stator is pressed or glued in and would not shift without heating & we didn't want to go down that path, but that would be a good solution. The motor splits in the middle & the stator would not move.

[Bluechip]

Peter

Maybe Stuart is suggesting turning the ROTOR end for end.        Look at the blunt end of the motor. If it has a hole and you can see the end of the shaft there is a good chance the rotor can be reversed. If there is no hole the idea is, for all practical purposes, a non-starter.

This will make the now 'blunt' end the drive end. The connector block will now be at the other end to what it appears now but that's usually of no consequence.

Dunno about 'good egg'. A well refrigerated good egg possibly ... frozen paws here 

Dave

[PJW]

Hi Dave & Stuart, good idea, the rotor shaft had different dia ends, but the bearings had the same dia, so I swapped the rotor & the bearings round & tried it & hay presto job done, I did not have to undo the wires as the stator stays in position. everything lined up inside the motor so job done,
once again thank for the help,

Peter

[Bluechip]

  

Another happy customer.

Next !!

Dave

[Stuart]

We aim to please our fellow form members

If all else fails KISS is the way to go

I have done that trick many time on small motors ,it's just not worth hacking into the winding , yes it can be done

You may find you have lost a bit of power due to the rotor not fully lined up with the stator

Sorry I did not explain to well I am dyslexic , my brain knows what I want to say but I cannot get it down on paper

Thanks Dave for the interpretation service

Stuart

Note is only for the spell checker that you can read what I type