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Modified HF DC

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Project by CovenantCreations posted 1274 days ago 2623 views 3 times favorited 14 comments Add to Favorites Watch

I got a good deal on this Harbor Freight DC. I decided to toss the instructions and modify this unit to mount it under my bench to save space in my shop. I also enclosed the space to muffle the noise of the motor, and it does help a lot. I mounted the motor unit on to a freestanding bracket. I figured the floor is always the coolest part of the shop, which would help keep the motor cool. The top filter bag is compressed some under the bench, but it doesn’t seem to affect the performance. I also mounted a blast gate under the chop saw bench with an above bench lever to flip it on and off. Over all Im very happy with it, and maybe someone can glean some info off my post.





14 comments so far

View Stormin's profile

Stormin

192 posts in 1376 days


#1 posted 1274 days ago

Not to be negative on your project but you should check the motor and make sure it is OK to mount it in a vertical position. Most motors are designed to run in the horizontal position. It all has to do with the bearings.

-- I started off with nothing I have most of it left

View NBeener's profile

NBeener

4806 posts in 1761 days


#2 posted 1274 days ago

Word of mouth has it that … others have flipped the axis on their 2HP HF DC motor, and run them daily, for hours at a time, and with no problem.

And I’m guessing that—if you DID fry the thing—HF would sell you a replacement for something like fifty bucks.

Neat job !

-- -- Neil

View CovenantCreations's profile

CovenantCreations

127 posts in 1490 days


#3 posted 1274 days ago

Stormin, I’ve seen plenty of motors mounted like that, including the one on my old Jet dust collector. I’m sure it will be fine.

View Stormin's profile

Stormin

192 posts in 1376 days


#4 posted 1274 days ago

I don’t want to start an argument but this is a fact.

Vertical Motors

There are two classifications for the mounting of electric motors—horizontal and vertical. Horizontal motors are foot mounted, while vertical motors are flange-mounted. Horizontal foot mounted motors that have flanges and are wall-mounted vertically are not classed as vertical motors. Electrically, a vertical motor must be designed with enough starting torque to start the driver equipment under the specified starting conditions, and to produce the required horsepower rating to obtain the specified flow and pressure efficiently. Mechanically, the motor must be designed with special features that are unique to vertical motor applications.

-- I started off with nothing I have most of it left

View ChunkyC's profile

ChunkyC

856 posts in 1841 days


#5 posted 1274 days ago

Thanks for sharing. I’ve been wanting to “compact” my HF DC setup sense day one. This gives me some ideas.

-- Chunk's Workshop pictures: http://spadfest.rcspads.com/thumbnails.php?album=135

View CovenantCreations's profile

CovenantCreations

127 posts in 1490 days


#6 posted 1274 days ago

Stormin, you may have something, but I am just going to leave it as it is for now, not too worried about it.

View Stormin's profile

Stormin

192 posts in 1376 days


#7 posted 1274 days ago

Like I said I would never want to start an argument or cause any problems on LJ I enjoy this site and certainly enjoy all the comments and the vast knowledge of the people here. My background is electrical and electrical motors is something I deal with on a almost daily basis .So I was only giving some advice.

-- I started off with nothing I have most of it left

View Michael J's profile

Michael J

103 posts in 1794 days


#8 posted 1274 days ago

Nice work! You might want to checkout my HF DC project. I mounted it on top of a fiber drum and it works great vertically.

http://lumberjocks.com/projects/35561

-- Mike Minneapolis, MN

View Dusty56's profile

Dusty56

11638 posts in 2275 days


#9 posted 1274 days ago

The reason the filters bags are so tall is so the machine can “breathe” (exhale) . Looks like yours will clog up in no time and reduce your suction to nothing and then you’ll have to get under the bench and remove the filter bag before the lower bag is in need of being emptied. If anything , put an inline seperator under the bench and mount your filter assembly in a corner of your shop.

-- I'm absolutely positive that I couldn't be more uncertain!

View EzJack's profile

EzJack

441 posts in 1757 days


#10 posted 1273 days ago

Yo Stormin,don’t sweat rocking the boat, we’re all tough here he can take it. This site is all about getting to the right way and learning from doing. Great input.
I would also have to go along with Dusty on the separator.

-- Ain't better or worse than any other woodpecker in the woods.

View CovenantCreations's profile

CovenantCreations

127 posts in 1490 days


#11 posted 1273 days ago

A seperator is in the near future for me, just havent got all the parts yet. I may consider changing the filter over to a side mounted canister as well.

View ClayandNancy's profile

ClayandNancy

479 posts in 1602 days


#12 posted 1273 days ago

Is there any way we can find out how a motor can be mounted?

View StumpyNubs's profile

StumpyNubs

6076 posts in 1387 days


#13 posted 1273 days ago

Stormin makes a good point. But since many people have successfully used THIS motor in other positions, it seems that THIS one is fine to change.

The bag under the bench is a bad idea, though. A lot of it will be pressed against the underside of the bench and that means you are reducing the useable portion of the filter by half or more. This means less airflow out, so there will be less airflow coming in from your machines. Your collector will have reduced suction. Those bags are designed for the suction of the motor’s impeller, that’s why larger impeller units have larger bags, or even two bags.

If it works for you, great. but if you find yourself wanting more suction, you’ll know why.

-- It's the best woodworking show since the invention of wood... New episodes at: http://www.stumpynubs.com

View newTim's profile

newTim

553 posts in 2193 days


#14 posted 1225 days ago

I’m with Clay and the others who have asked the question, “Is there a way we can find out how a motor can be mounted.” I think we all get that some motors can be mounted vertically and some horizontally, but how can you tell? And, is it a case where a horizontal motor can be mounted vertically, but a vertical motor cannot be mounted horizontally? We need an expert here.

-- tim hill www.newcalshop.com

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