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  1. Join Date
    Feb 2014
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    1,756
    #201
    Quote Originally Posted by ninjababez View Post
    wow didnt know that bro Vacuum cleaners : bang for the buck brands?

    Sent from my Redmi Note 9 Pro using Tapatalk

    there are also ryobi vacuums and other tools that have brushed motors. they're weaker

    i got a ryobi cordless brushless drill that's almost as powerful as 220v drill. so when i need to drill on my concrete walls to hang something i just grab it. it's powerful enough

  2. Join Date
    Nov 2009
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    3,053
    #202
    Brushless are for DC battery operated.

    I have yet to see a brushless corded power tools. Most corded are brushed AC driven, they have more torque than brushless.

  3. Join Date
    Feb 2014
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    1,756
    #203
    Quote Originally Posted by 12vdc View Post
    Brushless are for DC battery operated.

    I have yet to see a brushless corded power tools. Most corded are brushed AC driven, they have more torque than brushless.

    your inverter a/c is actually a brushless motor. the inverter is fed DC that's converted from 220v AC there's a lot of electronics to accomplish that. power tools need to be compact and robust so they're fine just having a brushed motor directly driven from AC

    btw your last statement isn't true. brushless perform better. all modern electric vehicles use brushless motors

  4. Join Date
    Nov 2009
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    3,053
    #204
    Yeah I know. brushless are just magnetic levitation motors controlled by semicon to turn on a specific phase or duty cycle. Electric cars won't be efficient without using inverters. What I'm saying is with power tools, I have yet to see a demolition hammer drill using inverter. DC just whines at high RPM while brushed gets more torque. Its like comparing a honda engine to a diesel engine. Its not yet economically viable using inverter on corded power tools, aside from additional components, its not as reliable as brushed.

  5. Join Date
    Feb 2014
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    1,756
    #205
    Quote Originally Posted by 12vdc View Post
    Yeah I know. brushless are just magnetic levitation motors controlled by semicon to turn on a specific phase or duty cycle. Electric cars won't be efficient without using inverters. What I'm saying is with power tools, I have yet to see a demolition hammer drill using inverter. DC just whines at high RPM while brushed gets more torque. Its like comparing a honda engine to a diesel engine. Its not yet economically viable using inverter on corded power tools, aside from additional components, its not as reliable as brushed.

    yeah coz demolition hammers won't benefit from inverter i.e. it's pointless

    but i think you're confused about brushed motors having more torque. that's not true. brushless motors can be designed for low RPM torque (wound for more turns of thinner wire) or high RPM (thicker wires w/ less turns)

  6. Join Date
    Jun 2015
    Posts
    2,139
    #206
    Got a Deerma VC25 last 10.10 Shopee sale.

    The low setting is good enough. 1 full charge would probably be enough for cleaning our small house.
    Mga ilang gamitan kaya bago mawala yung "new appliance smell" from the motor?

    Complaint ni misis mabigat daw. Sanayan lang siguro.

  7. Join Date
    Mar 2004
    Posts
    8,915
    #207
    What's the discount? ... Didn't notice the price go down for Deerma VC25 on 10.10 ... was watching it the whole day ...

  8. Join Date
    Jan 2008
    Posts
    3,682
    #208
    Quote Originally Posted by Vodka View Post
    yeah coz demolition hammers won't benefit from inverter i.e. it's pointless

    but i think you're confused about brushed motors having more torque. that's not true. brushless motors can be designed for low RPM torque (wound for more turns of thinner wire) or high RPM (thicker wires w/ less turns)
    kung speed panalo talaga brushless motors.. lower power consumption pa..

    pero sa mga RC pag crawler setup, brushed motor talaga maganda low rpm high torque

  9. Join Date
    Feb 2014
    Posts
    1,756
    #209
    Quote Originally Posted by yapoy86 View Post
    kung speed panalo talaga brushless motors.. lower power consumption pa..

    pero sa mga RC pag crawler setup, brushed motor talaga maganda low rpm high torque

    when performance is concerned brushless always wins

    try mo kasi mag high-turn (low kv) brushless. low rpm, lakas ng torque

  10. Join Date
    Jun 2015
    Posts
    2,139
    #210
    Quote Originally Posted by Walter View Post
    What's the discount? ... Didn't notice the price go down for Deerma VC25 on 10.10 ... was watching it the whole day ...
    Sa deerma1 shop... From 4,869, it went down to 4,799. After applying vouchers, got it for 4,379. Not much of a discount, I know.

    May isa pang store ng mga Xiaomi stuff selling it for 4,500. Pero wala kasing ratings so, hindi ako bumili duon.

Vacuum cleaners : bang for the buck brands?