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Forum topic by Dallas posted 01-17-2013 01:37 AM 2073 views 3 times favorited 22 replies Add to Favorites Watch
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Dallas

3179 posts in 1233 days


01-17-2013 01:37 AM

OK, as an ex trucking company owner I have to ask, How long does the Wynn dust collection filter last before replacement.

$120 for a filter is a significant chunk of change for most hobbyists, if, like my trucks it needed to be changed every 3-6 months, the cost would be more than the benefit.

I can buy surplus truck air filters at .5 micron at surplus for less than 1/4th the cost of the Wynn.

Someone please tell me how my thinking is wrong.

-- Improvise.... Adapt...... Overcome!


22 replies so far

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johnstoneb

791 posts in 918 days


#1 posted 01-17-2013 01:48 AM

I don’t know how long the filter will last. If the surplus filters will fit use them.

-- Bruce, Boise, ID

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crank49

3507 posts in 1716 days


#2 posted 01-17-2013 02:06 AM

Someone recently pointed out a particular truck filter that would substitute for the Wynn.
I can’t think of any reason they would not be just as good.
Even if you stack filters or make a manifold to adapt multiple cartridges there are lots of ways to work around this.

Generally speaking, the more surface area you provide, the slower the air travels going through it and the longer the filters will last. This is true of all filters, even bags and flat HVAC types.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View MattinCincy's profile

MattinCincy

128 posts in 1899 days


#3 posted 01-17-2013 02:14 AM

Properly maintained, they should last many, many years. They only need the occasional blast of compressed air from the outside to dislodge any caked on dust that might be clogging the pleats. I occasionally vacuum mine from the inside to give it a really good cleaning, but I only do that about once a year. I think they’re worth every penny, but if a truck filter works too and costs that much less then by all means I’d use one of them instead.

-- Wag more, bark less.

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HorizontalMike

6968 posts in 1660 days


#4 posted 01-17-2013 02:22 AM

Here…
http://lumberjocks.com/topics/41744

-- HorizontalMike -- "Woodpeckers understand..."

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Dallas

3179 posts in 1233 days


#5 posted 01-17-2013 03:27 AM

Good one Mike, ..... Except, Truck filters are designed to filter from the outside in, giving more filtration to begin with and most, if not all are designed with a coating that helps collect the dust giving more square footage of filtration.
I would be redesigning my little system to take advantage of that if it comes about that it’s cost effective to run truck filters.

The filters I can get are Donaldson built for off road machinery, but I haven’t looked up the specs on them, then again, Wynn isn’t real forthcoming with information about how long their filters last or what the air flow results are in real life situations.

On trucks we used a gauge called a filterminder that you could buy at and truck parts place, when it read in the red, it was creating too much suction to be efficient. Why don’t the filtration places offer these?

-- Improvise.... Adapt...... Overcome!

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Grandpa

3203 posts in 1421 days


#6 posted 01-17-2013 03:36 AM

Dallas, I don’t know how you figure the filter gives more filtration if the air flows from the outside to the inside. It has to have area on the inside to flow through so it should be equal. It has more area for dirt to cling on the outside because of the deep pleats in the filter paper. If it has the same rating it should work the same as the Wynn system.

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Douglas

312 posts in 1305 days


#7 posted 01-17-2013 03:41 AM

I asked the same question of Wynn, as I’d bought the paper filter version (the cheapest), and was getting paranoid that it wasn’t going to last, as it was of the type that couldn’t be washed. But I got a reply from them saying what MattinCincy said: just hit them from the outside with compressed air every so often, and vacuum then from the inside one a year if you’re fussy. I’ve been doing that with mine, and its held up great. Unless I tear it or damage it, it should last a long time.

-- Douglas in Chicago - http://dcwwoodworks.com

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Grandpa

3203 posts in 1421 days


#8 posted 01-17-2013 03:43 AM

I think I have seen 5 years posted for home shops.

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Dallas

3179 posts in 1233 days


#9 posted 01-17-2013 03:47 AM

I apologize Grandpa, I should have said that there is more free flow area for filtration before the filter starts to plug. With the inner side forcing air outward, the filter has the pleats closer together so that they can be plugged more quickly.
With the air being forced inward from the outside there is more space between the pleats so they cannot clog as quickly.

dczward, In my intimate relationship with air filtration trying to get every mile out of a diesel engine, drawing a lot more intake are than the Wynn filter, It was brought to my attention by Wynn, Donaldson and other mfg’s that using pressurized air destroys paper air filters.

Now, if Wynn has a way to make it magically possible, I’m all for it, but if the filter is tough enough for a homeowner to blow air from a compressor through without damage, why don’t they use the technology on commercial filters?

-- Improvise.... Adapt...... Overcome!

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tomd

1802 posts in 2516 days


#10 posted 01-17-2013 03:52 AM

I’ve had my Wynn for about 8 years now and it’s still going great. Also I did not get the paper one, just blow it out with a leaf blower every few months.

-- Tom D

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Grandpa

3203 posts in 1421 days


#11 posted 01-17-2013 03:55 AM

I would think if you have the same rating they should be equal. Am I wrong there? Tougher? I don’t know.

Yeah the filter has an area where dust can cling on the outside that isn’t so big on the inside. The grooves are smaller. I decided if I could afford a good collector I should just bite the bullet and go all the way with good filters and maintenance.

View ksSlim's profile

ksSlim

1011 posts in 1635 days


#12 posted 01-17-2013 04:04 AM

Filters are designed for air flow in cfm. The design is also improved with coatings on the collection side.
If a Wynn filter is “vibrated” when air flow is not present, it will shed a partial amount of the accumlated debris.
Must be a huge truck to need 1000cfm. Stacking them together will reduce air flow and coating is probably on wrong side of filter material.

Call Wynn, they have several sharp folks in the design department.

-- Sawdust and shavings are therapeutic

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Dallas

3179 posts in 1233 days


#13 posted 01-17-2013 04:13 AM

ksSlim, Are you kidding?

A modern 12L diesel engine will draw at least 100X 1000cu’/min.

My 6-71 Detroit Diesel (6 cylinders at 71 cubic inches EACH) draws 200,000 cubic feet per minute at 2100 rpm, if I remember right. I would have to pull out my manuals to make sure, which I won’t do tonight.

-- Improvise.... Adapt...... Overcome!

View shipwright's profile (online now)

shipwright

5298 posts in 1543 days


#14 posted 01-17-2013 05:19 AM

Truck filters work every bit as well as Wynn’s do. Many have the same rating. Mine work perfectly. I have Donaldson truck filters in one of my shops and a Wynn in the other and if I had to choose, I’d say there is less escapement from my Donaldsons. Check this blog and this one.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees. http://prmdesigns.com/

View Fred Hargis's profile

Fred Hargis

2033 posts in 1239 days


#15 posted 01-17-2013 12:21 PM

This may or may not be pertinent to your question, but I just replaced the filter on my DC…this was a stock Oneida filter. It has reached the point where I couldn’t get it clean enough for air flow…and it’s 6 years old. It has seen fairly heavy use, and a lot of drum sanding dust (very fine particles). I think those truck filters will work fine…Wood magazine had a shop built cyclone 12 years ago or so, and they used a truck filter in their design.

-- Our village hasn't lost it's idiot, he was elected to congress.

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