Changing Gears on Union Gradute lathe?

[paulkane1]

I've just bought a Union Gradute Lathe,I need some help to show me how I can change the Spindle Speeds, I've opened the top hatch of the Lathe ,there's 4 pulleys, the belt is on the biggest rim,which says 425 RPMs,then it goes along to (790),(1330),(2250)RPMs,corresponding with the 4 pulley wheels,I want to increase spindle speed to either 1330,or 2250RPMs,Thers 4 pulley wheels at the bottom of the lathe,could someone show me either by photos or preferably a video how I change the Spindle Speeds,All help would be greatly appreciated,

Bouts Kindly Paul

 

[jurriaan]

I think you have to loosen the belt by moving the motor up.

Go to http://www.lathes.co.uk/harrisonwood/ and move down until you see 'Motor and belt-tension adjustment mechanism.'

That should explain all :wink:

Don't forget to retension the belt after choosing another speed!

 

[flh801978]

Just inside the doorway where the motor is at the upper right hand side is a shaft with a plastic ball on pointing down ...move it so it points up
change your belts then move the ball back down
Job done

 

[paulkane1]

I think you have to loosen the belt by moving the motor up.

Go to http://www.lathes.co.uk/harrisonwood/ and move down until you see 'Motor and belt-tension adjustment mechanism.'

That should explain all :wink:

Don't forget to retension the belt after choosing another speed!

Thanks a lot for your help

 

[paulkane1]

Just inside the doorway where the motor is at the upper right hand side is a shaft with a plastic ball on pointing down ...move it so it points up
change your belts then move the ball back down
Job done

Thanks,I have just noticed that there is only 3 Pully Wheels on the motor shaft,while on the Spindle Pullys there is 4 Pully Wheels,I can change speeds up to 1330 RPMs ,but,how can I move up to the highest RPM of 2250 ?because if I change to matching Pullys on both Spindle and Motor and lock the Motor ,the Pully Belt is too slack? Do I need to modify something for me to get Top Spindle Spees of 2250? All help appreciated.

Paul

 

[flh801978]

The toggle with the knob on is connected to a right hand and left hand thread coupling turn this one way or the other to tighten the belt

 

[Phil Pascoe]

If you've one three way pulley and one four way pulley the belt is bound to be too loose/too tight/out of line at some stage. You need to match one or the other pulley - ideally two fours.

 

[paulkane1]

If you've one three way pulley and one four way pulley the belt is bound to be too loose/too tight/out of line at some stage. You need to match one or the other pulley - ideally two fours.

I know it sounds odd, I'll try and get a good light onto the Motor Pullys,and double check,if I knew how to post a photo of the Motor Pullys ,I would show you what it's like,I can't see what the reason would be to remove the Top RPM Pully?I know I'm a novice ,but ,there is no bigger Pully wheel behind the last wheel ,Thers a gap ,then it's the wall of the Motor.

 

[CHJ]

Has the lathe been in use in an establishment where they would not want the operatives to run it at high speed, school for instance?

 

[paulkane1]

Has the lathe been in use in an establishment where they would not want the operatives to run it at high speed, school for instance?

I don't know ,but,I was thinking that way myself,If it was in a school,Was there some Education Board that said the Lathe was not allowed to turn above 1330 RPMsI honestly don't see the logic?Would you know if it's hard to replace the 4 way Pullys onto the motor spindle? and,what price would a set be?Ill try and upload a image to show you.

 

[paulkane1]

Has the lathe been in use in an establishment where they would not want the operatives to run it at high speed, school for instance?

I don't know ,but,I was thinking that way myself,If it was in a school,Was there some Education Board that said the Lathe was not allowed to turn above 1330 RPMsI honestly don't see the logic?Would you know if it's hard to replace the 4 way Pullys onto the motor spindle? and,what price would a set be?Ill try and upload a image to show you.

Can't upload image,file too big,I've doubled checked I'm 110% there's only 3 Pullys at the motor

 

[Bodrighy]

Boy does this bring back memories. I learned to turn on one of these at school and we weren't allowed to change the speed. Such a pain anyway none of us ever tried.

Pete