No problem. The book is cheap and worth purchasing.
- Thread starter Beanwood
- Start date
My only complaint with the workshop series books (I have a couple) is the print is tiny, and I can only read it in really good light
I have a capacitor in series with the centrifugal switch and the starter winding (Identified thanks as it has noticably smaller wire)
I'm wondering where the live and neutral feed wires fit? I was thinking across the ends of the main winding, but also across the capacitor as live, with the 'other end' of the starter coil as neutral.
I'm wondering where the live and neutral feed wires fit? I was thinking across the ends of the main winding, but also across the capacitor as live, with the 'other end' of the starter coil as neutral.
well, I'm updating with a cautious success story.
Cautious, as I've rewired the capacitor,switch, windings as I think they SHOULD be (Not how they were previously) and it runs really smoothly and quietly.
I've only run it up for about 20 seconds, twice in a row - and it's drawing a nice steady 2.15A according to my meter.
It goes back on the drill tomorrow, or Sunday - and if it works, and stays working, I will be a very happy boy!!
Thank you all.
Cautious, as I've rewired the capacitor,switch, windings as I think they SHOULD be (Not how they were previously) and it runs really smoothly and quietly.
I've only run it up for about 20 seconds, twice in a row - and it's drawing a nice steady 2.15A according to my meter.
It goes back on the drill tomorrow, or Sunday - and if it works, and stays working, I will be a very happy boy!!
Thank you all.
..and caution was well founded...
I managed to find a few minutes this afternoon...
Screwed the motor back to the original mounting plate.. found the screws/nuts to mount it all on the drill.. Hooray.
Realised I hadn't thought about a switch (Oops) so just plugged it in to a socket to check it all still works.
Nearly hit by pieces of well perished drive belt.... but wait - what is this unique machine - it's custom made for removing broken screws/bolts using left hand drill bits - as it's running anti-clockwise
I know it's theoretically just a case of swapping the terminals for the starter coil, but as there was a lot of soldering in the motor to get it to this point, it's back on the work bench for some remedial action....
I managed to find a few minutes this afternoon...
Screwed the motor back to the original mounting plate.. found the screws/nuts to mount it all on the drill.. Hooray.
Realised I hadn't thought about a switch (Oops) so just plugged it in to a socket to check it all still works.
Nearly hit by pieces of well perished drive belt.... but wait - what is this unique machine - it's custom made for removing broken screws/bolts using left hand drill bits - as it's running anti-clockwise
I know it's theoretically just a case of swapping the terminals for the starter coil, but as there was a lot of soldering in the motor to get it to this point, it's back on the work bench for some remedial action....
Today I feel this project has gone backwards. Rewired - but I can see sparks from inside the motor (Probably coming from the start switch) I can also see smoke, and 'smell' hot windings.
There were black tell tale marks (Pics in a moment) and I'm not sure if that means the capacitor isn't working as it should?
There were black tell tale marks (Pics in a moment) and I'm not sure if that means the capacitor isn't working as it should?
Seadog
Save the planet. It's the only one with rum!
- Messages
- 12,815
- Location
- NE London - UK
Reverse either coil...and caution was well founded...
I managed to find a few minutes this afternoon...
Screwed the motor back to the original mounting plate.. found the screws/nuts to mount it all on the drill.. Hooray.
Realised I hadn't thought about a switch (Oops) so just plugged it in to a socket to check it all still works.
Nearly hit by pieces of well perished drive belt.... but wait - what is this unique machine - it's custom made for removing broken screws/bolts using left hand drill bits - as it's running anti-clockwise
I know it's theoretically just a case of swapping the terminals for the starter coil, but as there was a lot of soldering in the motor to get it to this point, it's back on the work bench for some remedial action....
Screwdriver
Member
- Messages
- 10,716
Haha yeah, methinks you have the coils wired in opposition...
Help!
Wired again- runs nicely- backwards. How do I make it run the other way- I thought it was to switch one of the coils around?
Screwdriver
Member
- Messages
- 10,716
I think you want to swap both coils around. That's an unthinking knee jerk, I haven't drilled through the entire thread or analysed your pics but both coils should be in parallel, one set stronger than the other so that it is perfectly possible you have/had them in opposition. If you swapped ONE coil input and it's running perfectly backwards, you need to swap BOTH coils so they both run forwards...
Red'n'Black
Forum Supporter
- Messages
- 708
- Location
- Malvern, Worcs
The motor won't care which is live and which is neutral.
How did you work out which was the main winding and which was the start winding? They often have a different number of turns and/or different wire gauge, the difference in resistance might show up on a meter.
Here's a copy of a diagram from a previous post, with the connections labelled:
Live could go to M1 and neutral to M2, or vice versa, it doesn't matter, the direction will be the same.
Swapping wires M1 with M2, or S1 with S2 (not both at the same time), will reverse the direction. There is no way you can damage anything just by doing either of these swaps, as all you are changing is the phase relationship between the currents in the two windings, which is what sets the direction.
Swapping wires M2 with S2, if the windings are not identical, is likely to overload the cap and centrifugal switch.
So I would start with the configuration that runs without any smoke or arcing, even if it's backwards, and label all the wires before you change anything else.
Seadog
Save the planet. It's the only one with rum!
- Messages
- 12,815
- Location
- NE London - UK
Yes, just the one, Mrs. Wembley...
Screwdriver
Member
- Messages
- 10,716
It's done!!!
It runs quietly, and smoothly, and it's back to drawing a steady 2.1A
Honestly - it sparked a little from the starter switch whilst it settled down, but after 20 seconds or so, it seems to have resolved.
I have drilled a hole - to make sure the whole things wasn't a complete waste of time and I'm very happy.
Yes, if I charged my time at something ridiculous like £5 per hour, I coud have bought a new one - but I've saved something, and learned some things along the way (Like it's not that straight forward to wire a motor that has too few connection posts, no markings anywhere on the board, and (just for fun( - factory original connection wires that run on the reverse to keep things interesting.
.
But, I now appear to have a fully functioning - deparately in need of a clean - floor standing drill press - with ball bearing quill support - so this can double as a mill, or mount it upside down as a router table!! (According to the advertising literature..)
Thanks chaps - I couldn't have done it without you.
It runs quietly, and smoothly, and it's back to drawing a steady 2.1A
Honestly - it sparked a little from the starter switch whilst it settled down, but after 20 seconds or so, it seems to have resolved.
I have drilled a hole - to make sure the whole things wasn't a complete waste of time
and I'm very happy.Yes, if I charged my time at something ridiculous like £5 per hour, I coud have bought a new one - but I've saved something, and learned some things along the way (Like it's not that straight forward to wire a motor that has too few connection posts, no markings anywhere on the board, and (just for fun( - factory original connection wires that run on the reverse to keep things interesting.
.
But, I now appear to have a fully functioning - deparately in need of a clean - floor standing drill press - with ball bearing quill support - so this can double as a mill, or mount it upside down as a router table!! (According to the advertising literature..)
Thanks chaps - I couldn't have done it without you.
