Brushless Makita mod


(Gerald Mackelburg) #122

Vince, Griff

Please don’t give up on your efforts. As others have pointed out, the brushless Makita router is likely not as powerful as the 0701. But it may be adequate and could offer numerous other advantages.

If you tell me what the resistances of the routers’ motor windings are, I should be able to provide an estimate of their relative power capabilities. (Which you should also be able to do with your cutting tests if they’re router power limited.) That would also enable me to provide advice on powering the brushless routers.


(Griff Carpenter) #123

I haven’t given up. Truth is, it works fine.

While interesting, I don’t really care how much power it requires etc etc. Just not my thing.

I’ve hogged out inch thick aluminum with a 3/8” TAS, 6mm doc. I’m currently doing full depth (1”) adaptive in red oak, no issues.

The router is not grounded as was my DeWalt. No static problems yet, humidity these past few weeks as low as 5%.

Under heavy load I can hear the router slow down a bit so the power supply may be a little light, we’ll see. If I smoke the cheap ps at some point I’ll report and maybe upgrade to a Mean Well.

The original question in the thread is answered. Thanks to @Vince.Fab.


(Griff Carpenter) #124

At the risk of exposing my ignorance to the derision of others, I’ve no idea how to accomplish that. This is the extent of my electrical test equipment. I’ve not yet learned how to use the inductance/capacitance meter, it’s on my ever growing list though.

Throw some hints my way and I’ll see what I can do.


(Gerald Mackelburg) #125

Griff,

IMO derision is counter productive, but I’m not a Trump supporter!

This should help. Make sure that you have the power disconnected first! Please ask if you have any questions or concerns.


(Gerald Mackelburg) #126

Cutting power is dictated by the characteristics of the material being cut and the volume and speed of its cutting. The axial (depth) and radial (width) of the cut along with the feed rate and material type would be really helpful to those of us interested in such things. Knowing the router speed and cutter details would also enable calculations of machine forces and chip loads. That info could be really helpful in the production of better “speeds and feeds” as well as other usage guidance for the Shapeokos.


(Vince) #127

This experiment isn’t over until we find the limits of this router! This is the only low cost option for a brushless that’s 30Krpm capable . Going to pick up a few Destiny Diamondbacks tomorrow for continued testing, they assured me the 3/8s will survive at 30k…almost $50 each.

The 360 watt power supply was enough to push 0.250 through anything I could throw at it. Hopefully the new 20amp unit i recieved today will do the trick for bigger tooling.

Griff, one of my cnc operator buddies always told me you want enough load to hear a difference when cutting. If you aren’t blowing that fast acting fuse I think it’s fine. Im going to find a suitable fuse holder to solder into the board just in case.


(Griff Carpenter) #128

It’s interesting that neither of us have experienced the smoke and destruction predicted early in the thread :roll_eyes:.

Possibly the XTR01 isn’t rated at 1.25 hp, the basis of the smoke prediction? I’ve never seen any hp rating for it.

Anyway, I’ve a few more hours on mine, albeit not pushing the limits, no issues at all.

Got some larger black walnut projects in the works, will start pushing then.


(Stuart) #129

It looks like a solid option that I will likely use in future. Thanks for being pioneers for the rest of us!

A lot of predictions of smoke and death early on… that usually means you’re onto something good!


(Gerald Mackelburg) #130

Vince,Griff
Got numbers!?