New tilting 2x42

My only thought would be the platen arm is extended further from frame, leading to possibly more flex/play. Also any alignment issues could be exacerbated due to additional length.
 
J Lensmire said:
My only thought would be the platen arm is extended further from frame, leading to possibly more flex/play. Also any alignment issues could be exacerbated due to additional length.
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I moved them both out, feels solid to me. I guess we bought a 2x48 machine lol... Gonna order a couple belts for testing.
 
John GERDING said:
Is there a down side to running 2x48 Belts on it?
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I haven't got to actually grind with it yet, but it tracked fine and didn't do anything crazy. I just ran out and grabbed a 60grit shredder though. It could be weird with a j weight or specialty belt, I just wanted to see if it would stretch out and fit a 48 without mods and it did. I would expect if I get a contact wheel on it a 48 will be mandatory. It's fun getting new things and immediately trying to figure out how to do something stupid with it lol
 
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aareeyesee said:
I haven't got to actually grind with it yet, but it tracked fine and didn't do anything crazy. I just ran out and grabbed a 60grit shredder though. It could be weird with a j weight or specialty belt, I just wanted to see if it would stretch out and fit a 48 without mods and it did. I would expect if I get a contact wheel on it a 48 will be mandatory. It's fun getting new things and immediately trying to figure out how to do something stupid with it lol
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Dude if you figure out how to put a 6 or 8 inch wheel on it please post it! I love hollow grinds and that would be a game changer for this little toy grinder.
 
You know... For the price? That seems like a really slick option. I'm tempted to pick one up myself for sharpening and lighter grinding. My only hesitation is having to keep two different belt sizes on hand.
 
Can one of ya'll who actually have the grinder in hand check the drive wheel for diameter, and how is it on motor? The current belt speed of 2,000 to 7,000 SFPM is way to fast for anything.

Maybe a photo?
 
I was thinking about one for sharpening and for doing octagon Wa handles instead of using my 2x72 and 12" disc sanders.
 
Ken H> said:
Can one of ya'll who actually have the grinder in hand check the drive wheel for diameter, and how is it on motor? The current belt speed of 2,000 to 7,000 SFPM is way to fast for anything.

Maybe a photo?
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When I get home from work I'll get it if no one else has by then. If I remember correctly if you have it on the lowest setting I think 3 for 300rpm it's actually pretty slow. Of course until now my main grinder was 2x48 multitool on a variable speed 8" grinder so my idea of slow could be skewed.
 
Thanks - "IF" it does slow down to 300 rpm it should be ok. Depending on the drive wheel size, 6" drive wheel is around 550 SFPM at 300 RPM. I was going by the posted specs of "Belt speed: Variable, 1967–6693 FPM" Ooops, I see I should have said 6700 rpm, NOT 7,000 RPM - still faster than needed.
 
Personally, modification wise, I think it would be amazing to have a small wheel attachment and/or contact wheels so you could leave in horizontal mode (if desired) to clean up tangs and such. The nice thing about this grinder is that, if the small wheel attachment is designed properly, you could use the same small wheels from your 2x72
 
Drive wheel is 5”. Motor speed is 100-5000 rpm. So if the calculator on Burr King is accurate, see below:
RPM Wheel Diameter

Drive %

Spindle RPM Spindle RPM SFPM M/Sec
100 5000 6545 33.25
% Spindle RPM SFPM M/Sec
100 5000 6545 33.25
90 4500 5890 29.92
80 4000 5236 26.60
70 3500 4581 23.27
60 3000 3927 19.95
50 2500 3272 16.62
40 2000 2618 13.30
30 1500 1963 9.97
20 1000 1309 6.65
10 500 654 3.32
0 500 654 3.32
© 2020 Burr King Mfg - Warsaw, MO

Slowest speed will be less then 654 SFPM
 
https://imgur.com/a/whckB6R

The wheel is 5" and the output shaft is either 1/2" or 13mm I can't get a good enough measurement to decide. I'm leaning toward 13mm because 1/2 round fits with room. Just found my damned caliper battery dead or id have better info.
 
REK Knives said:
Personally, modification wise, I think it would be amazing to have a small wheel attachment and/or contact wheels so you could leave in horizontal mode (if desired) to clean up tangs and such. The nice thing about this grinder is that, if the small wheel attachment is designed properly, you could use the same small wheels from your 2x72
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Yes I don't think it would be very hard to mount up small wheels for exactly that... Even if you have to make the bracket yourself rather than buying a prebuilt one it's just some flat bar and steel plate to make one. I'm very interested in making that happen.
 
I doubt there will be any issue with 2X42 vs 2X48. The arm would only slide out 3". That is much less of an issue than trying to run 2X72" belts which would require extending the arm out 15".
 
Stacy E. Apelt - Bladesmith said:
I doubt there will be any issue with 2X42 vs 2X48. The arm would only slide out 3". That is much less of an issue than trying to run 2X72" belts which would require extending the arm out 15".
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I wonder about that. That arm looks like it's only 1x1/4". I'd worry about flex issues if you pushed it out another 3"
 
So mine arrived weds. It's cool but at 25lbs not expecting much. It would be wicked easy to change it to 1x1 tooling arms with a little time. The small idler and tracking wheels get scorching hot after running for just a few mins (not grinding just running it full speed 6000rpm trying to get it to track better. Tinkered with it a bit yesterday. Hopefully pictures work, but have some on my insta (mossknives) built a new platen with 2" and 4" rubber wheels. removed the drive wheel and aligned all wheels out a bit, away from frame this am, not shown in video. I Think tracking wheel will be next to go and using a 3" I have around.

https://photos.app.goo.gl/P7dGs5TyGJNVDYmb9


https://photos.app.goo.gl/4H7pA7UdG6Jq9HPS6
 
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I saw that $279 sale price - I wish the shipping was only $30 or so I'd pull the trigger for sure. I just don't really have a "need" for the darn thing.

Good video of the grinder running with the cover removed from the drive wheel. That drive wheel looks large - edit based on post #51 & #52 above: Any idea of the actual diameter (I see the drive wheel diameter is 5")? Belt speed really needs slowing down some.
 
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5" drive wheel, shaft is 14mm around 9\16. Took it off to align better. On inside of the wheel it has approx a 3\4" wide 1\8" spot drilled out. I am assuming they actually balanced it a bit!
 
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