Added 1hp Harbor Freight Motor To My New Homemade 2 x 72 Belt Grinder Belt Grinder Mode

[@garymundy4398]

I set up my grinder in a similar fashion after watching your video several times. I am using a 1.5 hp motor (3600 rpm) so it's quite heavy. I didn't want or need the entire weight of the motor to serve as the belt tension so I balanced it accordingly. Not much belt tension is required. I have a 4" pulley on the motor and a 5 speed step pulley on the grinder. It works really well. I can easily change speeds ranging from about 2500 to 7500 surface feet per minute. I have lots of power and can't drag the thing down at all with what I've done so far. Thanks very much for putting your video on youtube. I'm far from mechanically inclined but this worked out quite well.

[@dextonduncan3550]

I like the way you set up the motor so you can use it on all the pulleys with the same belt, genius!

[@sjeverett75]

I liked your idea for the drive belt tension. And makes for easy pulley swap. I'll have to remember that when I build mine.

[@cocospops9351]

I just built one of these using a treadmill motor and controller. I used the flywheel on the motor as the drive wheel. The thing works great. The motor is only 550w and I use it set to 4 on the controller, which goes up to 10 and it doesn't bog down. I think the flywheel is key 👍

[@antiantifaterrier5761]

cocospops I know this is 3 yrs old but do you still use the grinder, the flywheel that is? I was wondering if since the flywheel is thin (1” wide?) if it was splitting your belts. I just built one using a treadmill motor also and was thinking about just using the flywheel instead of welding a 3” tube to it.

[@t.a.6454]

@@antiantifaterrier5761 I would also like to know. Trying to decide the same thing

[@patrickpatrick191]

I am not laughing, because I modify almost everything, when I see easy improvements! Plus, as life goes on, there will be other tools, other mods, to add! Appreciate your work!

[@DiesInEveryFilm]

You seem like such a cool guy I enjoy your videos keep up the good work 👍🏼.

[@rifleman7313]

I was planning on doing something similar with a Harbor Freight/Menards (they all look about the same) 4"X36" belt sander. With a minimum modification of just changing the pully from a 1" drive pully to a 4" drive pully since I would not be using the disc sander part of the tool. However if I could either change out the factory less than 1 H.P. motor to a 1 H.P. (or higher powered) and use the same switches. Or do a pully swap. Or if possible do both of these modifications. Thanks for any help or thoughts.

[@TomSommer]

Very nice. No laughing here. You did it!

[@danwelchable]

Great build. It's been 5yrs. How has the harbor freight motor performed?

[@stihl29]

Hey, wondering how the 1 hp motor is holding up? Thinking of buying the same one for my build.

[@stvnbryn]

Just what I was looking for! You just sold me a motor

[@robertmunguia250]

Can you put a sharpening belt on it? And control the speed too.

[@blaeuboy]

Great vid man, I really like your performance comparison of the 3 different motors. Just building my own & started with a big treadmill motor which I also found bogged down a lot. I think their hp ratings are over rated. Cheers

[@terryteague164]

hey sparky! what an awesome build.

[@PRO_GAMER_SIM]

Didn't know harbor freight had a good motor i been looking for one

[@7chucknduck]

Why would anyone mock? That looks like a damn well put together grinder to me. Really nice!

[@donaldcarbone2073]

Looks good. A new knife maker in town :)

[@crossgrainwoodproductsltd9230]

I just came across your video and I enjoyed these build video's so much I subscribed. Great job with the grinder! Are you a welder by trade? Your welds are superior to most I see on here. Not to disparage anyone elses, but I grew up around welding and can spot a good job when I see it. And the nice thing about the various trials you went threw, you were teaching us what not to do and what works. And it looks like 90% of the steel came from the old lathe, so now you have enough steel tubing for another type of build video! Great Job!

[@irlrp]

Impressive, you can be proud on that one !

[@endlessmountainwoodworks4278]

What diameter pulley is on the motor. I am thinking of doing exactly this design so it would be helpful to know.

[@1pcfred]

The formula for calculating surface speed is; (PI * DIA * RPM) / 12 = SFPM DIA is in inches, of course. Now abrasives can run from ~5,500 ~14,000 SFPM So 8,732 SFPM is not too fast. But it is on the higher side of abrasive surface speeds I suppose. Still not entirely out of the realm of reason though, as you've no doubt discovered. Great job on your belt grinder, sander machine there. I like the way you made it. BTW if your driven wheel is 5.7" (I might be reading your notes wrong) then your SFPM @6,665.9 RPM = 9,947 SFPM which is still useful. It certainly works for me.

[@garyroyce597]

need 411 on all your belt wheels ... where you got them and sizes etc...... also any notes on latest improvements not covered in your videos... Thanks GARY

[@chandlerdickinson]

+gary royce Got them off ebay... i think they were around $150 5" drive, 4" idler and 2" contact wheels

[@garyroyce597]

Thanks Chandler!

[@Coopdeville0624]

Im in the process of building my 2x72 and my question for you is, did you ever try direct drive? My plan is to put the 4 inch drive wheel directly on the motor, do you see any issues doing that?

[@torker32]

How is that motor holding up? Have you used it besides testing it? in other words, Is it up to your standards for durability, performance,etc.. Thanks, Enjoy the videos..

[@dtj41]

How is the Harbor Freight motor holding up? I'm considering getting one

[@carloscervantes8734]

that treadmill motor would of worked best BUT the reason why it didnt work for u was because you took the heavy pulley off of it. theres a reason why they have that heavy collar pulley on them , keep that torque at low speed. i know sounds crazy but i learned that the gard way. looks good

[@paulphan6419]

Carlos Cervantes

[@vanderhoof5701]

Good job Chandler 👍

[@jttech6834]

Be sure to check the open box section. They had a 1.5 HP motor for about $100.

[@YourOldDog]

I used a caster wheel also but hated the thump thump thump everytime the wheel came around. I solved it by cleaning the wheel with alcohol and doing two wraps of gorilla 2" wide tape BUT NOT LETTING EACH END OVERLAP. It quited right down and stopped the thump thump thump that I hated so much. Evidently it cushioned the seems as they came around.

[@Martillo_de_Dios]

Why laugh? That came out pretty damn good! Loved your videos btw...

[@charlesfaulkner8653]

If you were to build this from scratch rather than using a lathe how much would you have invested in it? Great build!

[@chandlerdickinson]

150$ for the rollers. 100$ for the motor. A couple pillow blocks and a shaft and then the steel. It's the steel that makes or breaks the cost advantage... If you can find the steel cheap prob 350$ to 450$.

[@ZappninLLP]

i saw sparks coming off the top tracking wheel right toward your eyes when you did not have your safety glasses on. I know from personal experience to always use safety glasses! Don't want to lecture but pass the word on to those who don't know how a little tiny speck of metal can totally ruin your day. Nice job by the way.

[@chandlerdickinson]

+LL Pete Yes glasses or a visor are a must on this tool! Thanks

[@dustinsmith4068]

+LL Pete, he likes to live on the edge, you nancy boy!

[@7chucknduck]

Do you think that 1hp is enough? Im by no means a grinder expert. Quite the opposite! Ive been thinking about doing something similar to yours but ive heard from a few makers that generally on a 2x72, you generally want 1hp for every inch of belt width. I have no clue so what's your thoughts on that...

[@antiantifaterrier5761]

Nice safety glasses lol. Nice grinder tho

[@mattiassmith842]

I noticed that you posted this video after you upgraded the HF sander with a larger pulley wheel. did you do this bc that wasn't doing what you needed?

[@edgaralejandre1522]

i used the same motor and i don't use it much and now when i try to use it after 5 minutes it'll start tripping the reset button,how is yours holding up?

[@troubleis1983]

Nice build bro, love all ur vids! Where can I find those pulleys you used?

[@chandlerdickinson]

2CoastCustoms I bought those from ebay. 100 to 150$

[@enzowelvaert4595]

Nice grinder. Do you have plans for your grinder? Because. I am building one but i cant get my belt to stay in the center of the wheels.

[@chandlerdickinson]

enzo welvaert sorry no plans... did you put an adjustment idler wheel in your build?

[@enzowelvaert4595]

Yes i did. Its also crowned if you know what i mean.

[@chandlerdickinson]

enzo welvaert I had a similar problem. belt would stay on and idler would adjust left and right but belt never adjusted to ride centered on the rollers. I talk about it in my video. In the end i did not have the idler wheel lined up with the drive and contact wheels. took hours to figure out but once i did everything worked great

[@enzowelvaert4595]

So you mean i have to put my adjuster idler out of center from the rollers? I will try it tonight i'm at work now:)

[@chandlerdickinson]

my guess is two things are happening... idler is not inline with the other wheels or the wheels are not square to each other. watch my build again see where i was running only half on the wheels if this is what yours looks like i think you are not lined up

[@matthewsiaosi]

How do u adjust the speed on the motor?

[@hermanvonsalzajovi]

Sorry, can you describe the new motor and where did you get it? Love your channel by the way..."not to bad" lol

[@chandlerdickinson]

hermanvonsalzajovi it's a 1 hp continuous duty 110v motor from harbor freight. cost me around 100$ It did the trick!

[@hermanvonsalzajovi]

Chandler Dickinson Nice.Let me tell you something: I hpe you suceed in your projects, I have learned quite a few things watching your videos keep it up. When I build a belt grider, I'll post a video and give you the credit!

[@mmgross144]

Very good use of a crappy lathe. I had one and dumped it...now I wished that I had kept it for other uses!

[@edgaralejandre1522]

how has it been working?

[@BigIronTV]

Nice mods.

[@gabrieliuszenkovas1246]

could u explain me the calculations how do the rpms etc..please explain im so confused on this aspect🙁

[@patrickpatrick191]

DCKnives has it on his Blog about his build of several 2X72 belt sanders. It is this: Motor speed (RPMs) X Pi (3.1428) X wheel dia. ( direct drive motor wheel, without sheaves), /12 = SFM. Now, if you have motor v belt to Sheaves, then, it is the speed ( RPM of the sheave shaft), Diameter of the sheave on duty, which you must use in the formula. I am a Air Force trained electronics technician, with 20+ years of computer, Avionics, munitions, Nuclear and Rocket science, who loves mathematics, but, I admit that I can make mistakes. Anyone who can correct any of my statement, please step in and do so. When I build the very heavy duty 2 X 72 belt sander, it will tilt and run, similar to Jeremy Schmidt's video, with some tools as built by DC Knives... And, I intend to use the HFT 68288 motor, to a pillow block shaft, with 4 sheaves. Using a smaller motor pulley to drive the V belt will lower the SFM of the sanding belt. My intended speed is about a top speed of 4000 SFM. More use as a blade sharpener, shaper...

[@someoneimportant1692]

Cool, who here hasn't built something and right after they finish..thought of a better way to do it or decided there was something that needs to be changed

[@patrickpatrick191]

That's why i am viewing all the videos on KZbin, BEFORE I start to build mine!

[@neilyakuza6595]

Looks great!

[@rudyrosales2257]

Very informative video. Thank you.

[@donaldcarbone2073]

So, what's the scoop with the 8" castor? You going to use it as a contact wheel??

[@chandlerdickinson]

Donald Carbone It works great but i have not found myself using the 8" wheel much... maybe on a sword or heavier piece

[@bishop2355]

Chandler Dickinson I love the size of your grinder, can you give us some detailed dimensions of it? Thanks

[@caballero1152]

+bishop2355 I 2nd that motion it would be nice

[@i2aspire]

can you draw up some plans and send me cause I've been wanting to make a sander

[@dalethompson5842]

I to would like some plans of your belt grinder. They don't have to be cad quality pictures hand drawn with measurements; would fine. Thank you.

[@Swordmkr]

Hmm seems I should start with a high torque motor...heavy duty in the first place then.

[@ohhaiderhowisyou]

What is the equation you used to find those speeds?

[@chandlerdickinson]

Fsims 97 Uhhhhhh.... long time ago...lol... the circumference of the drive wheel times the rotational speed of the motor will give you the LF speed... Now in my case I had step pulleys between the drive wheel and the motor so my speed could be varied. If the step pulley and motor pulley were the same size then my drive RPM of the motor would match the RPM of the drive pulley. If my pulleys were not the same size then figure the circumference of each and divide motor pulley by the step pulley and multiply that times the speed rating of the motor. That will give you the RPM of the drive using that step pulley. And again the circumference of the drive wheel times the calculated RPM would give you the speed of the belt. I HOPE that helps... good ole geometry lol!

[@coehorn]

Suggestion: You should use some EYE PROTECTION!

[@Swordmkr]

LOL...F@#%ing more awesome!

[@ssrknivesandguns8741]

I USE SKATE BOARD WHEELS ON THE GRINDERS I MAKE! WORK AWESOME AND CHEAP!

[@Scogny]

i think that belt needing to be better tensioned.. it is to slack...

[@Lee_B_Futures]

Just FYI... You're going to have some parasitic loss using a pulley system for speed control, which is why most grinder packages with pulley systems from major brands will come with a 2hp motor. You'll actually be getting about 1.5hp out of a 2hp motor, and 1hp out of a 1.5hp... Looks like this works well for you though, and that's all that matters.

[@drewj.2569]

joke build idea: take the treadmill motor and create the worlds largest dremel