Excalibur Potentiometer

[rfielder [OP]]

Does anyone know if the potentiometer in an Excalibur EX-21 is linear or log?

Due to an unfortunate accident today, I need a new one.

Thanks in advance!

[guylavoie]

My educated guess would be linear. Log pots are usually for audio volume controls.

[rfielder [OP]]

My educated guess would be linear. Log pots are usually for audio volume controls.

Thanks! That makes sense.

Managed to damage the one on my saw. Seyco lists them, but they won't ship the part to Canada.

Sayal has one that looks similar and is the right impedence. Will check my saw in the morning, see if the leads are soldered or press fit. Maybe I will get lucky and it will be a $2.00 fix.....

[Soak-N-Fused]

Mine died so I got one off the web like this one. Works fine. Let me know if you find a better solution
Mike

[rfielder [OP]]

Mine died so I got one off the web like this one. Works fine. Let me know if you find a better solution

Mike - that is interesting!

Where did you attach it? How did you wire it?

[Soak-N-Fused]

Very simple. I found a metal box to house it and attached to the base using the same screw holes as the previous one. Power wires from power cord to the power terminals and and DC motor wires to the other 2. Was Super easy. Tool Fan (Rory) put me onto it
Mike

[Soak-N-Fused]

Robert, curiously wondering how you made out with the scroll saw?
Mike

[rfielder [OP]]

Robert, curiously wondering how you made out with the scroll saw?

Mike:

Thanks for asking!

Pulled the pot out and went to short out the leads, so that the saw would work albeit at full speed. As soon as I hit the foot switch, it worked. Put it back together, and in spite of the occasional wack upside the head, it continues to work. At a slower rate than usual, and with no control, but it works.

Contacted Seyco in Texas, and they provided a price of about $68.00CDN to ship the part up to me. That is the proper way to go, but it will require disassembling the saw to get at the control board, since the new part comes with cable attached. The manual I have has great exploded views of the saw, but it will still be an adventure.

I am still on the fence about getting a $2.00 part of Sayal in Mississauga that should work. The wires are soldered to the pot, and I think I can desolder them and attach to the new pot.

However, I have a lot of scroll sawing to do for Christmas stuff, so I am hesitant to do anything as long as the saw is working. Once the backlog is cleared, then I will have to make a decision.

[iamtooler]

Can you not just use a router speed control on the power plug now that it is fixed speed?

[rfielder [OP]]

Can you not just use a router speed control on the power plug now that it is fixed speed?

In theory, yes. I assume you mean one that goes on the power line - I have no idea how well the saw would work with one of those. I don't know how the control board would react to having a drop in power.

Plus I would have to short out the pot to force the saw to its highest speed. If I am going to do that, I might as well either try the Sayal $2.00 pot, or get the right part from Seyco.

Busy Bee has a scroll saw power unit for $62. Since the correct part is $68, I might be better getting the correct part and seeing is I can take a saw apart and put it back together in working order, without too many bit and pieces left over.

[rfielder [OP]]

The new pot arrived from Texas last Thursday.

Finally got the nerve up to try disassembling my Excalibur today. Went well! The saw is now back to normal operation.