Just Bob

Harbor Freight Rikonstein DC

Recommended Posts

Was this one of those bag models that you disassembled and rigged up with a cyclone? What HP did you start with?

  • Like 1

Share this post


Link to post
Share on other sites

This is cool an interesting. I'd really like to do this but i have a feeling that when i upgrade I'm going to just go with a cyclone unit. My concern is with the extra load on the motor. It'd be interesting to see if this has an effect on bearings and other items on the motor.

  • Like 1

Share this post


Link to post
Share on other sites
11 hours ago, Isaac Gaetz said:

Was this one of those bag models that you disassembled and rigged up with a cyclone? What HP did you start with?

It is just the standard 2hp Harbor Freight 2 bag DC.  Over the last 8 years I have tried every modification known to man to get better results.  This is the last mod....

  • Like 1

Share this post


Link to post
Share on other sites
3 hours ago, Just Bob said:

It is just the standard 2hp Harbor Freight 2 bag DC.  Over the last 8 years I have tried every modification known to man to get better results.  This is the last mod....

Very cool. That is what I thought you were doing. I've been thinking of upgrading my dust collection, I like the unit over a cyclone covered bucket like that. It would work better for my set up, may have to borrow it.

Share this post


Link to post
Share on other sites

I have seen a number of HF modifications and like a lot of the ideas. Still thinking about what I will do with mine. I do have one concern. It is my understanding that many electric motors are designed with bearings based on whether the shaft is mounted horizontal or vertical. The vertical mount has special thrust bearings to take the vertical load. Without these I would think the bearings would fail prematurely. I am no electric motor specialist, please correct my thinking if I am wrong. 

Share this post


Link to post
Share on other sites
I have seen a number of HF modifications and like a lot of the ideas. Still thinking about what I will do with mine. I do have one concern. It is my understanding that many electric motors are designed with bearings based on whether the shaft is mounted horizontal or vertical. The vertical mount has special thrust bearings to take the vertical load. Without these I would think the bearings would fail prematurely. I am no electric motor specialist, please correct my thinking if I am wrong. 

You are correct, but 'premature failure' is a relative term. In such a small machine, it might mean it runs for 19 years, instead of 20.

  • Like 1

Share this post


Link to post
Share on other sites
6 minutes ago, wtnhighlander said:

You are correct, but 'premature failure' is a relative term. In such a small machine, it might mean it runs for 19 years, instead of 20.

I agree, I just don't see the this as being a problem.

Share this post


Link to post
Share on other sites

Just Rob,

Do you know why the vanes on the Rikon face backwards? It just doesn't make any sense to me.

I am surprised the impeller cost $119 including shipping. I've read posts where it only cost $60. Guess I need to get a hold of Rikon. Well, I guess your right. Just called them and it's $117 including shipping to Ohio. Any they don't know why the vanes are shaped backwards either.

 

Titan152

Share this post


Link to post
Share on other sites
14 minutes ago, Bill Wincer said:

 

Do you know why the vanes on the Rikon face backwards? It just doesn't make any sense to me

I did some research on this, and if memory serves, it has to do with less stress on the motor.  The backward facing vanes are more efficient in moving air, but place a greater amount of stress on the motor bearings, etc..  DO NOT QUOTE me, it has been awhile and it is quite possible I am wrong.  But I wouldn't worry about it a whole lot, I have used the crap out of my DC since I changed impellers and it is still going strong.  And yea, the price used to be $60.00, ya gotta love supply and demand..

Share this post


Link to post
Share on other sites

I don't know how I missed this thread before...but holy crap that's a big improvement in suction.  I guess I'll have to do the same to mine.

Share this post


Link to post
Share on other sites
On 2/8/2017 at 11:50 PM, bleedinblue said:

I don't know how I missed this thread before...but holy crap that's a big improvement in suction.  I guess I'll have to do the same to mine.

Yes in my research the impeller of the Harbor Freight is 9 7/8" and the Rikon 60-200 is 12". Why Harbor Freight chose to under size the impeller is anyone's guess. It leaves 2" of volume loss. My goal is to make the DC as close to the 3hp Grizzly as possible without the Grizzly price. I recently had the opportunity to witness first hand the awesome suction that a 3hp Grizzly system fitted with an Oneida Super Dust Deputy can produce. In my HF DC design, I'm changing the impeller, increasing the impeller inlet from 4 3/8" to 6", fit a super dust deputy XL (which has 6" inlet and outlet) Wynn 35A filter, 6" main's and 4" drops with blast gates. This design is going to make the HF DC as best as it can get.

Share this post


Link to post
Share on other sites
Yes in my research the impeller of the Harbor Freight is 9 7/8" and the Rikon 60-200 is 12". Why Harbor Freight chose to under size the impeller is anyone's guess. It leaves 2" of volume loss. My goal is to make the DC as close to the 3hp Grizzly as possible without the Grizzly price. I recently had the opportunity to witness first hand the awesome suction that a 3hp Grizzly system fitted with an Oneida Super Dust Deputy can produce. In my HF DC design, I'm changing the impeller, increasing the impeller inlet from 4 3/8" to 6", fit a super dust deputy XL (which has 6" inlet and outlet) Wynn 35A filter, 6" main's and 4" drops with blast gates. This design is going to make the HF DC as best as it can get.

But is it actually going to be significantly less expensive, in the end? Not sarcasm, I really am curious.

  • Like 2

Share this post


Link to post
Share on other sites
6 hours ago, Brent said:

I modified my Harbor Freight Dust Collector with the 12" Rikon impeller, opened up the inlet to 6" and turned it into a two stage scylone with the Super Dust Deputy XL.

Brent, I saw your video on YouTube the other day and was really impressed.  I have seen others that have increased the intake on the DC to 6" to match the SDD.  I swore that I was not going to do anymore mods to this thing, but now I am waffling a bit. I am curious about the dust sensor, the lid for my can is 3/4 ply, will the sensor work in something that thick?

Share this post


Link to post
Share on other sites
16 hours ago, Just Bob said:

Brent, I saw your video on YouTube the other day and was really impressed.  I have seen others that have increased the intake on the DC to 6" to match the SDD.  I swore that I was not going to do anymore mods to this thing, but now I am waffling a bit. I am curious about the dust sensor, the lid for my can is 3/4 ply, will the sensor work in something that thick?

Thanks! The sensor would work through a 3/4" lid because it lets you adjust the sensitivity. You would probably have to bore out the bottom half of the hole to countersink the nut into the ply. I don't think the shaft of the sensor would stick out far enough through the bottom of the hole to attach the nut otherwise. 

Share this post


Link to post
Share on other sites
On 9/14/2016 at 9:16 PM, Just Bob said:

Before: the average at all three drops was 325 cfm

After: average 640 cfm.

impellor1.JPG

DC

DC.JPG

Thanks for sharing this upgrade.  You have some numbers showing real world improvement.  Good job.

Share this post


Link to post
Share on other sites

I sent a request to Rikon Tech Support earlier today and they were very timely in responding with the following note:

 

Hey Joel,

               Thank you for your inquiry. Parts can be ordered by calling (877)-884-5167 Mon-Fri from 8:00am-4:30pm EST. Unfortunately we are currently out of stock on the Impeller and are expecting to see more beginning of June. If you would like we can put the impeller on backorder and ship as soon as we have them in. Cost for the Impeller is $199.98 plus shipping and handling. I hope this is helpful. Please do not hesitate to let us know if there is anything else we could help you with.

 

Wow! Is it supply and demand or greed?

Share this post


Link to post
Share on other sites

JJansen,

I'm glad you got that clarification on price from Rikon. That initial price quote alarmed me as well. I'm confident that if we upgrade the impeller, it will definitely increase  the CFM.

Best of luck to you in your upgrade. I will be doing the same thing later this year. So far, I am using the original Harbor Freight Dust Collector set up with the cloth collection bag on the bottom and the cloth bag filter on top. Initially, the fine dust particles did make it through the 2.0 micron bag, but after a couple uses I no longer noticed it. I am also using a Powertec dust collection hose from Amazon and good hose clamps. Love the dust collector so far and with upgrades it will only get better.

https://www.amazon.com/gp/product/B00LPOR42M/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B00FAMGEFI/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now