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Band saw noise in cold garage

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Forum topic by kwolfe posted 01-12-2015 12:54 PM 794 views 0 times favorited 7 replies Add to Favorites Watch
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kwolfe

108 posts in 1033 days


01-12-2015 12:54 PM

I have a Grizzly G0513X2F that I keep in my garage workshop. Lately here in central PA, it has been down in the teens (note that I hate this weather with a passion). The band saw runs fine, but I have noticed that right after making a cut, I hear a pop sound coming from the back side of the saw ( around the motor maybe). Kinda sounds like the old cork pop guns I had when I was a kid.

The band saw seems fine, but I just wanted to see if someone else out there ever had the same issue.


7 replies so far

View Tennessee's profile

Tennessee

2410 posts in 1982 days


#1 posted 01-12-2015 01:10 PM

I live in SE Tennessee, so I don’t have the temp issues you have. (I used to live up in the Poconos, so I can relate.) I own the G0513X2BF.
I first thought it might be your electric brake, but then realized you don’t have the B designation in your number, so no electric brake.
The only thing I can think of is these motors are Capacitor start, induction run, so there is a centrifugal switch on the motor shaft, internal in the motor, that when the motor reaches a certain RPM it opens and the capacitors are taken out of the circuit.
Conversely, when the motor winds down, the switch re-engages for the next start. With the cold, you might be hearing it snap into position for the next startup. It would come when the motor has reached about 40% of its running RPM, coming down to a stop. If it is cold, it might be making a snapping sound as it might be a little hesitant to snap back into the closed position for the next start.

-- Paul, Tennessee, http://www.tsunamiguitars.com

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bondogaposis

4037 posts in 1819 days


#2 posted 01-12-2015 01:50 PM

Running machinery in cold weather is hard on it. You will find woodworking way more enjoyable if you heat your shop in the winter.

-- Bondo Gaposis

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kwolfe

108 posts in 1033 days


#3 posted 01-12-2015 07:16 PM

The capacitor may very be the culprit. It would make sense that it is kicking in when the saw is this cold and under load.

bondo,
Would love to heat the garage, but with two kids, three dogs and other stuff that needs to get done around the house, sometimes, I am only in the garage long enough to make a handful of cuts. Heating the entire weekend would get really costly.

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MrUnix

4247 posts in 1667 days


#4 posted 01-12-2015 07:29 PM

If the noise is after making a cut, not powering down.. then it’s not the centrifugal switch. About the only thing that changes immediately after taking a cut is the blade thrust bearings stop spinning, but can’t imagine why (or how) those would make such a noise.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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kwolfe

108 posts in 1033 days


#5 posted 01-13-2015 12:50 AM

Just thought of something. I just put on a 1/4 blade. I had a 3/4 on it before and had never heard a noise. The temp got up to 35 today and it still made the noise just now. Might have to switch the blades back and see if it continues.

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kwolfe

108 posts in 1033 days


#6 posted 02-16-2015 05:05 PM

Reviving this to see if anyone else has any more thoughts. Might try and throw the 3/4” blade back on tonight but it’s real darn cold in PA right now (only about 15 today and was 24 in the garage this morning).

Just to reiterate. The blade doesn’t seem to be bogging down at all. When I’m done with the cut and the blade is no longer under load, I hear the pop. Almost sounds like those little wood blocks we used to use in music class when we were kids. Everything else works great.

I wonder if the motor capacitor is kicking on and off due to the cold weather. Is there some kind of centrifugal switch for it? Wonder if it popping back out would make that sound.

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kwolfe

108 posts in 1033 days


#7 posted 03-31-2015 11:23 AM

It’s been a while but I wanted to come back to this just in case anyone else had the same issue. The popping noise also turned into a whirring noise now that it got a little warmer. When cutting, I reached down and put my finger on the lower thrust bearing….....noise gone.

Weird that it would also be capable of making that pop gun noise but that’s it. I’m placing a call to Grizzly today to get a replacement.

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