twigg Posted January 9, 2021 Share Posted January 9, 2021 If I'm not mistaken, the motor only applies the minimum torque necessary to keep spinning, so until you apply a load you shouldn't see a difference. Only practical difference I can think of is how much of a scare you get if something goes wrong and the blade jams up. Link to comment Share on other sites More sharing options...
Stash Posted January 10, 2021 Share Posted January 10, 2021 With all that extra hp, if something jams, you will quickly go 'code brown' and see the weak link in the chain. Kinda like the shear pins on a snowblower. With the 1/3 hp motor, the motor itself should bog down before anything else goes 'boing'. Steve Link to comment Share on other sites More sharing options...
Frosty Posted January 11, 2021 Share Posted January 11, 2021 Badsaws aren't scary when they jam and break a blade, it happens every now and then. Having enough power a chipped tooth doesn't stop the blade is a good thing, it's much less likely to jam or break if it just pulls through. I wouldn't go out of my way to go overboard on HP but it's not going to hurt a thing. Frosty The Lucky. Link to comment Share on other sites More sharing options...
JHCC Posted January 11, 2021 Author Share Posted January 11, 2021 Well, there go my plans to install one of these: Although with a weight of nearly five tons, I might have had to reinforce the stand a little bit.... Link to comment Share on other sites More sharing options...
Frosty Posted January 11, 2021 Share Posted January 11, 2021 Perfect, you could superglue a saw blade to the shaft and just show it to your stock, it'd section itself. Heck, 900hp at 900rpm, you could attach the drive pully to the shaft and forget gear reduction. Use the motor for the stand. You could charge people to look at it. Frosty The Lucky. Link to comment Share on other sites More sharing options...
ThomasPowers Posted January 11, 2021 Share Posted January 11, 2021 I don't think they would sell that for a "home shop" unless you can prove you have a sufficiently maniacal laugh and have a pending Evil League of Evil application. Link to comment Share on other sites More sharing options...
twigg Posted January 11, 2021 Share Posted January 11, 2021 If you had a gear increaser (whatever the fancy word for that is), you could do some friction cutting! Ever had a perverse desire to cut a ball bearing in half with a bandsaw? Also, Frosty, on my landlord's bandsaw, there's a gaping 2" hole around the blade. I think he lost the piece of the table that's supposed to hug the blade, but they don't make parts for this piece of junk anymore. In any event, it sometimes will suck a piece of cutoff into the hole. Hasn't launched anything yet but it sure is spooky. This bandsaw is hungry Link to comment Share on other sites More sharing options...
Scott NC Posted January 11, 2021 Share Posted January 11, 2021 8 minutes ago, twigg said: Ever had a perverse desire to cut a ball bearing in half with a bandsaw? Yes. Link to comment Share on other sites More sharing options...
twigg Posted January 11, 2021 Share Posted January 11, 2021 Link to comment Share on other sites More sharing options...
JHCC Posted January 12, 2021 Author Share Posted January 12, 2021 9 hours ago, ThomasPowers said: I don't think they would sell that for a "home shop" My problem is that every time I manage to convince my sales rep that I’m basically harmless, he quits, and I have to start over again with a new guy. Also, I don’t have 2,300 volt service. Link to comment Share on other sites More sharing options...
Scott NC Posted January 12, 2021 Share Posted January 12, 2021 Don't let small details like that slow you down! Link to comment Share on other sites More sharing options...
JHCC Posted January 12, 2021 Author Share Posted January 12, 2021 No, that’s what gear reducers are for. Link to comment Share on other sites More sharing options...
Scott NC Posted January 12, 2021 Share Posted January 12, 2021 tou·ché... Link to comment Share on other sites More sharing options...
twigg Posted January 12, 2021 Share Posted January 12, 2021 Holy smokes, something just dawned on me. That green beast is drawing at least 292 amps of current (that's assuming it's got a power factor of 100%) and it's totally enclosed! If you stalled that thing (a herculean task to be sure), it could turn into a pipe bomb! Yikes! Link to comment Share on other sites More sharing options...
Scott NC Posted January 12, 2021 Share Posted January 12, 2021 Computer control, interlocks and couplings goooood. Link to comment Share on other sites More sharing options...
ThomasPowers Posted January 12, 2021 Share Posted January 12, 2021 Disposable Minions---very good! Link to comment Share on other sites More sharing options...
Frosty Posted January 12, 2021 Share Posted January 12, 2021 On 1/11/2021 at 6:20 AM, ThomasPowers said: I don't think they would sell that for a "home shop" The surplus sale outfit John frequents has a warehouse of crazy BIG motors and they don't care who buys one. I'm a little surprised John picked this peanut motor for the post. If you're going circle saw don't use a friction blade, I'm pretty sure it'll pull a dry cut blade. You'd probably black out Oberlin and surrounding areas before that motor stalled. Frosty The Lucky. Link to comment Share on other sites More sharing options...
JHCC Posted January 12, 2021 Author Share Posted January 12, 2021 3 minutes ago, Frosty said: I'm a little surprised John picked this peanut motor for the post. Good photos. Link to comment Share on other sites More sharing options...
Frosty Posted January 12, 2021 Share Posted January 12, 2021 <sound of forehead being slapped> Frosty The Lucky. Link to comment Share on other sites More sharing options...
JHCC Posted January 14, 2021 Author Share Posted January 14, 2021 The metal-cutting side is up and running. I need to tweak the motor mount, as it bounces too much, but a test cut on 1” square went just fine. Yay! Link to comment Share on other sites More sharing options...
twigg Posted January 14, 2021 Share Posted January 14, 2021 Congrats JHCC! Looks like your work and planning paid off! Link to comment Share on other sites More sharing options...
JHCC Posted January 17, 2021 Author Share Posted January 17, 2021 Finished the motor mount for the wood-cutting side of the vertical bandsaw. Here’s drive belt running to the wood side: And to the metal side: (Note the chunk of wood under the wood side motor keeping it from dropping down too far.) And here’s the view from the front: I didn’t try a wood-cutting blade on the saw, but I did run the wood-side motor with the metal blade already in place. All well. I still need to add something to keep the motors from bouncing too much while running; their own weight isn't enough to keep sufficient tension on the pulley. I also want something a bit more elegant than that chunk of wood to keep the wood side motor from dropping down too far (the switch box on the motor does the job on the metal side). Ideas are marinating.... Link to comment Share on other sites More sharing options...
JHCC Posted January 17, 2021 Author Share Posted January 17, 2021 As a short-term measure, I added a hold-down made from one of the old tires. Better than nothing, but still with room for improvement. The pulley on the saw and the belt need replacing. The pulley isn’t running true, and the belt’s pretty worn. I’m also getting this odd little shudder about every second and a half. Not sure what’s behind it, but I’m inclined to think that one of the tires isn’t completely seated. Link to comment Share on other sites More sharing options...
Scott NC Posted January 18, 2021 Share Posted January 18, 2021 On 1/16/2021 at 8:15 PM, JHCC said: Ideas are marinating.... How about some all-thread, a few nuts and washers and a couple of rubber snubbers? Oh, and a bracket to bolt it all to. Can't help with the shudders. Working on my own.... Link to comment Share on other sites More sharing options...
JHCC Posted January 19, 2021 Author Share Posted January 19, 2021 Put on a new belt, but not a new pulley; the one I got had a 1/2” bore rather than 5/8”. I’m not going to bother getting the right one, because I’ve realized that the shudder seems to be coming from the motor — it’s still there when you run the motor without the belt. So, apart from figuring out a better way to keep the motor from bouncing, I think I’m done with this, at least for now. Might think about adding some bracing to the base or even making a new one down the road, but not at present. Link to comment Share on other sites More sharing options...
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