Power washer pump conundrum.

[Bury the Trash]

welding the output pto stub on the gear that went to the mower bed gear.

using 312 rods
old bit of pto shaft slid on

those holes were for the bolts /set screws into the mower bed.

 

[Bury the Trash]

as seen here , exposing the innards of Czechoslovakian engineering

 

[Bury the Trash]

Shaft connected to motor ,pump is on the other end.
yellow arrow shows direction from being driven from the normal pto drive direction.

 

[335d]

Just be careful with the motor when running as you have created a generator. Ensure the motor terminal box lid is on and waterproof.

 

[335d]

I take it that the mower bed is gearing up the pto speed to match the motors original speed?

 

[Bury the Trash]

I take it that the mower bed is gearing up the pto speed to match the motors original speed?

Yes, the motor is rated at 1380 rpm i believe. i will use it on 750 or 1000 pto gear and have a tacho to check the shaft speed but i don't think that needs to be exact and it used to be a too powerful for washing vehicles iirc.


with regards the motor turning into a generator What would be the best way of stopping it from generating electric? ie to make it the safest.
the wires re easily disconnected / removed .

 

[010101]

Yes, the motor is rated at 1380 rpm i believe. i will use it on 750 or 100 pto gear and have a tacho to check the shaft speed but i don't think that needs to be exact and it used to be a too powerful for washing vehicles iirc.


with regards the motor turning into a generator What would be the best way of stopping it from generating electric? ie to make it the safest.
the wires re easily disconnected / removed .

Have the magnets out.

 

[335d]

Easiest way would be to remove the shaft and cut or press the rotor off the shaft and reinstall
you could cut it off without removing the bearings.
Or remove the stator assembly. See pic below.

 

[Blue.]

If the motor wasn’t working anyhow,why is it suddenly going to generate electric?

 

[010101]

The magnets moving will induct a charge into the coil. Whether it discharges through the correct tappings at the correct current, as when it is working properly, is not relevant to safety, especially in a very wet operating environment.

 

[Bury the Trash]

If the motor wasn’t working anyhow,why is it suddenly going to generate electric?

It was working when last used but that was some time ago and i didnt try it on electric before i started this, but i assume it would still work ok apart from being damp etc.

 

[Bury the Trash]

It works .

on the '750' shaft at tick over

just need to make 2 or 3 guards to cover and will be finished .

scrap heap challenge a success again (this time )

 

[David.]

Is the generator providing the lighting to work by?

 

[David Bliss]

I very much doubt you would get any electric power out unless the motor is given a flash when being driven, however to be on the safe side just short all wires out as it decays any build up, I use slave a motor to help generate a 415V truer three phase supply from 250V single phase step up transformer, if the slave is left running without a load drain on from other electrical equipment other than just warning lights, if the supply power is then switched off just for a second or two they will stay on until the slave motor slows, so if a 415 volt motor being driven long enough its possible you might get good belt from it way above the motors voltage if not shorted out,