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kat

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Posts posted by kat

  1. Well for multifunctional power heads it makes sense to keep the motor in the power head, and not in the attachment, because attachments would be expensive if every one of them had a motor .

    BTW, DUX60 is listed with 600W power, almost half of DUR369, but much higher RPM (9700 vs 7000) which is weird again..

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  2. I noticed that the new grass trimmer (DUR369) has the motor on top, which means that the line is ultimately driven by a shaft, which means some power is lost though the shaft. On top of that, the shaft is most likely flexibile => wears out over time. Cheap Stihl gas trimmers have flexible shaft, while the quality expensive ones have solid shaft.

     

    But old Makita trimmers like DUR368 have the motor on top of the line feeder so it drives the line directly, no need for a shaft.

    Normally this should be more power efficient and more reliable because there's no shaft... but for some weird reason, Makita lists them at 550 W power, while the new trimmers are listed at 1000 W. I am confused... How come the new ones are more powerful if the overall build seems to be less efficient?

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  3. I don't understand why don't tool manufacturers use li-po pouch cells.

    Cylindrical cells are just not the right kind of tech for power tools because of the low discharge currents. Plus they take up too much space.

    But li-pos pouches can discharge hundreds of amps because of the huge surface area, and they last much longer, like 80% after 1000+ cycles. 

    Cylindrical cells only last 250-300 cycles at 80%

  4. Makita is dead. They killed themselves with that 40 XGT bs. And they can't put 21700 in the 18V because they don't fit. So they are stuck.

    And frankly the others suck too. Their batteries are too big.

    I think the only company that has a future is the one that makes a mixed 20V-40V battery and that is small. I think Metabo has it. With some other company.

    At this point it's clear that batteries have to be standardised. Same battery for all cordless tools. Governments need to step in and force them to abide to a standard.

  5. That cannot be 27.000 sustainable lumens.

    27.000 lumens for 3 hours would need shitload of batteries.

    Plus there is no way it can output that without cooling and it doesn't look they have a water cooling system in there.

     

    This is flat out false advertising. They claim 27.000 lumens when in reality you can only get that output for a few minutes.

  6. omg

    They make so many useless crap, instead of improving existing tools!

    Makita was actually a good brand with reliable tools and look now what a joke it has become..

    I really hope Hilti doesn't go this route, because they are the only sane ones left

  7.  

    19 hours ago, Jjwillac said:

     You don't seem to have much positive to say very often?

     

    Although I agree Makita has been (still is) sorely lacking in lighting, I'm glad to see them making gains.  I'm not aware of any other brands with 10,000 lumen work lights? I would still like to see a tower type light that is one relatively compact (very relative in this case) unit for transportation rather than tripods to mount multiple directional lights.

     

    There are many chinese manufacturers like Acebeam, Fenix, Imalent... that have even 60.000 lumen flashlights and most are IP rated for underwater use, 2-3m drops, so you could call them worklights. And they are made from aero-grade aluminum, not plastic like Makitas and Milwakees...

     

    And I doubt that these Makita lights can sustain 10.000 lumens. That is probably the peak output for a minute or two, after which they step down due to heat. 10.000 lumens needs active cooling, and not plastic lol.

     

    Acebeam has lights that can sustain over 10.000 lumens without step down, but they have heavy heatsinks and some have fans.

    With the current LED tech the max sustainable output for lights that size is about 1500-2000 lumen, and probably much lower for plastics.

     

     

  8. A new battery tech has to be superior to the current tech in all the aspects. Capacity (energy to size/volume ratio), discharge currents, lifetime cycles, flat voltage curves. Also production cost has to be low enough.

  9. There will be no new battery because current battery technology has reached its limits and there are no viable alternatives.

    20700 and 21700 are just formats, and they bring no advantages over 18650 or any other format.

    The capacity and discharge current  has not improved for over 5 years in the battery industry.

    Other manufacturers came up with higher capacities because they switched to bigger formats (= bigger batteries). There's no point for Makita to do the same because they would need to come up with modified tools to fit them.

     

    Don't be fooled by youtube hypes about 20700, Tesla, graphene and whatever. They will show all the benefits of a new proposed technology, but leave out the limitations or disadvantages that make the adoption impossible

  10. I don't see the point of this.

    This will probably cost twice as much as a gas mower, even though it's waaay less powerful, it's not self-propelled and has a very small cutting width @ 46cm...

    What's up with this new trend to make every tool run on batteries ? Why can't people understand that some tools are simply not suited for running on batteries

     

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