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HF Dust Collector Motor is Junk - Buying new impeller & motor (2-3HP)

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Forum topic by BoilerUp21 posted 03-12-2018 06:27 PM 3225 views 0 times favorited 11 replies Add to Favorites Watch
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BoilerUp21

103 posts in 965 days


03-12-2018 06:27 PM

So I tried to fix the centrifugal switch on my HF DC, and am still having the same issues. Rather than spend $160 on another HF dust collector (just to get the motor/impeller swapped out), I am going to purchase a 2-3 HP model from grizzly or another reputable brand with a decent warranty…

My setup has the motor, impeller, Super Dust Deputy and Wynn filter with all 4” PVC piping runs. I am thinking of going with a 3HP motor to draw more CFM than the HF did. Although a 2HP and better impeller is probably better than HF’s…

Please let me know if anyone knows of any deals or recommendations on which brand/model they would recommend. Trying to spend under $400.

Thanks


11 replies so far

View pintodeluxe's profile

pintodeluxe

5798 posts in 3011 days


#1 posted 03-12-2018 07:46 PM

I wouldn’t buy anything with an electric motor from Harbor Freight. They simply sell poor quality stuff.

The only thing I’ve bought from Harbor Freight in the last 3 years was a tack hammer. Surprise, surprise it failed too. I mean honestly it’s a tack hammer. How on earth do you make a bad one? I’m not sure but they found a way.

A 3hp motor probably won’t give you any more meaningful CFM’s. Impeller design has a lot to do with it (and actual vs. claimed motor power) but when I was comparing the 2hp and 3hp Tempest cyclones, the CFM was almost identical. They have big 14-15” impellers and offer great performance. My 2hp is still going strong, but sadly they aren’t made any more.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View Woodknack's profile

Woodknack

12430 posts in 2578 days


#2 posted 03-12-2018 07:57 PM

Buy once, cry once.

-- Rick M, http://thewoodknack.blogspot.com/

View Tennessee's profile

Tennessee

2893 posts in 2712 days


#3 posted 03-12-2018 08:33 PM

The motor must have a NEMA code. Match that code to any 2HP decent motor from a local supplier in your area, and just swap out the motor? You might even get lucky and find a used one along the line. I’d at least try before I ditched the whole thing.

-- Tsunami Guitars and Custom Woodworking, Cleveland, TN

View bdresch's profile

bdresch

148 posts in 1806 days


#4 posted 03-12-2018 09:35 PM

Putting a bigger motor on the same impeller will do nothing. The rikon 12”impelled will fit in your housing and costs about $110 shipped but people are reporting they are back ordered. That impeller will require a real 2hp motor. Need to make sure what you find online has the correct mount and rpm.

If you really want an increase in suction I would look for a 3hp 4 bag style collector that you can rob the motor and impeller from. Those 3hp collectors typically had 14” impellers which would be a big increase from the tiney HF impeller.

View jonah's profile

jonah

1913 posts in 3496 days


#5 posted 03-12-2018 10:58 PM

The motor only matters inasmuch as you need a powerful enough motor to drive a big impeller. You’re never going to get any more aiir moving through the crappy, tiny HF impeller no matter what you do.

View BoilerUp21's profile

BoilerUp21

103 posts in 965 days


#6 posted 03-13-2018 01:06 AM



The motor only matters inasmuch as you need a powerful enough motor to drive a big impeller. You re never going to get any more aiir moving through the crappy, tiny HF impeller no matter what you do.

- jonah

Exactly, that is why i am asking for suggestions for a 2-3HP & impeller combo to use with my existing cyclone and Wynn filter.

View Fred Hargis's profile

Fred Hargis

5171 posts in 2691 days


#7 posted 03-13-2018 10:52 AM

You might consider moving to a “real” 2 hp unit (at least an 12” impeller) to save money. The 4” existing ducting will be a limiting factor. A 3 HP unit will move slightly more air through the duct, but probably not enough to make it worthwhile cost-wise.

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

View BoilerUp21's profile

BoilerUp21

103 posts in 965 days


#8 posted 03-13-2018 12:17 PM



You might consider moving to a “real” 2 hp unit (at least an 12” impeller) to save money. The 4” existing ducting will be a limiting factor. A 3 HP unit will move slightly more air through the duct, but probably not enough to make it worthwhile cost-wise.

- Fred Hargis

I am considering swapping the 4” trunk line out to 6” if I go with a 3HP unit. Trying to find a reliable 3HP unit for under $400 is tough. I would be open to a used 3HP if it was under $250…but haven’t found anything locally.

In hind sight, I should have just put up the extra $ from the beginning and bought a 3hp cyclone unit from grizzly instead of trying to be cheap. Cost me the same in the long run, any many headaches.

View SweetTea's profile

SweetTea

371 posts in 857 days


#9 posted 03-14-2018 11:23 AM


You might consider moving to a “real” 2 hp unit (at least an 12” impeller) to save money. The 4” existing ducting will be a limiting factor. A 3 HP unit will move slightly more air through the duct, but probably not enough to make it worthwhile cost-wise.

- Fred Hargis

I am considering swapping the 4” trunk line out to 6” if I go with a 3HP unit. Trying to find a reliable 3HP unit for under $400 is tough. I would be open to a used 3HP if it was under $250…but haven t found anything locally.

In hind sight, I should have just put up the extra $ from the beginning and bought a 3hp cyclone unit from grizzly instead of trying to be cheap. Cost me the same in the long run, any many headaches.

- BoilerUp21

I wonder if Grizzly would sell you a blower/impeller housing with the impeller already mounted? Then you could search for a decent quality used 3HP motor. They do come up for sale quite frequently if you know where to look. At least that is what I have been told. I had to purchase a used 5HP motor not too long ago and my buddy who deals in these things found me one for a steal. If you can’t get the blower/impeller housing from Grizzly for a decent price then I would start by just upgrading the impeller to the 12” Rikon, and changing out your trunk line for 6” pvc versus the 4” you have now. I would think that would be a fairly substantial upgrade over what you have now, then you can add a new (or used) 3HP motor later. From my research it seems that your first upgrade should be to switch out the 4” trunk line for a 6” trunk line. Then purchase a Rikon or Jet 12” impeller and then last do the motor upgrade.

View Redoak49's profile

Redoak49

3660 posts in 2186 days


#10 posted 03-14-2018 11:42 AM

These threads are always interesting. I wonder how much time and effort is reasonable to do these modifications. When does the return on investment become to low. I guess it depends on if you want to spend your time on making sawdust or modifying an HF unit.

I saw somewhere the cost of adding a dust deputy and Wynn filter to a HF along with other changes and it was a lot.

View BoilerUp21's profile

BoilerUp21

103 posts in 965 days


#11 posted 03-14-2018 11:56 AM



These threads are always interesting. I wonder how much time and effort is reasonable to do these modifications. When does the return on investment become to low. I guess it depends on if you want to spend your time on making sawdust or modifying an HF unit.

I saw somewhere the cost of adding a dust deputy and Wynn filter to a HF along with other changes and it was a lot.

- Redoak49


Bottom line is you are about $650 to take a HF and add Wynn filter, Super Dust Deputy and collection drum.

Looking back, I wish I would have bought a Grizzly 3HP unit with (2) canister filters (currently going for $785) and added a cyclone to it. Or purchased one of their cyclone setups for ~$1,200.

for $650 you are hoping that the cheap motor and impeller gamble you took actually pays off. Add to that, the time spent screwing around with the thing that could have been spent actually doing the hobby it was meant for.

If only I could go back in time haha

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