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Author Topic: Kapex Motor Issue  (Read 1706 times)

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Offline BJM9818

  • Posts: 66
Kapex Motor Issue
« on: March 15, 2017, 10:08 PM »
What symptoms present themselves when the Kapex motor starts to fail. I have started to notice a little slowness in blade speed along with longer times to reach full blade speed.  This could be in my head but it's got me thinking.

Does the motor completely die at once or is it a slow painful death.

Saw is circa 2014 vintage.

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Offline Jim Green

  • Posts: 27
Re: Kapex Motor Issue
« Reply #1 on: March 15, 2017, 10:25 PM »
I think your kapex is about to fail. That's what happened the first time mine went down plus I heard almost like a crunching sound now and then. The other time it was a grinding noise and a poof of smoke, done. Sorry

Offline BJM9818

  • Posts: 66
Re: Kapex Motor Issue
« Reply #2 on: March 15, 2017, 10:34 PM »
It's been like that for a while but I haven't been using it as much recently. I guess I will just wait and see. New ones still have the same issue and motor?  I love the saw and have invested so much in 210mm saw blades if it dies I may just by another one.

Offline GarryMartin

  • Posts: 1518
Re: Kapex Motor Issue
« Reply #3 on: March 16, 2017, 05:43 AM »
The Kapex has a universal motor and so speed control is accomplished by reducing the voltage. If you are perceiving a slowness, it may be worth checking the voltage level on your circuit.
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Offline skids

  • Posts: 909
Re: Kapex Motor Issue
« Reply #4 on: March 25, 2017, 09:18 PM »
The Kapex has a universal motor and so speed control is accomplished by reducing the voltage. If you are perceiving a slowness, it may be worth checking the voltage level on your circuit.

This^^^

The Kapex is like two different saws from 15a to 20a circuit. Sometimes your stuck with a 15a, gotta do what you have to do. It's one of the only things I hate about the Kapex is how fickle it is about needing a 20a circuit.
The Almighty Kapex 120, ETS 150/3, DTS 400, CTMidi,, Sys-1 Box (2), Sys-STF D125, Sys-Vari, Compact Cleaning Set, 1900 Rail, TS55r, CXS, OF-1010, MFT-Mini, MFT/3

Offline Samo

  • Posts: 491
Re: Kapex Motor Issue
« Reply #5 on: March 25, 2017, 09:37 PM »
Also, be aware that not all 20 Amp circuits are necessarily true 20 Amp.

We have been asked to work on jobs with temp power boxes that are crappily installed and existing older service panels that are dangerous. 

We will add a damages clause in the contract or not offer a contract at all.   [dead horse]

Best thing to do is, learn about power and how to measure it or stay away from quality power tools.  Yes, I've burnt a Kapex!
« Last Edit: March 25, 2017, 09:39 PM by Samo »

Offline glass1

  • Posts: 273
Re: Kapex Motor Issue
« Reply #6 on: March 25, 2017, 10:28 PM »
You do understand breakers do not limit power but cut power off when their respective amperage limit is reached,  a 15 amp breaker does not just limit the draw to 15 amps. So any appliance willnot be different on a 15 amp breaker or 20 amp breaker until it draws too much amps on the 15 amp and trips it.

Online Bohdan

  • Posts: 669
Re: Kapex Motor Issue
« Reply #7 on: March 25, 2017, 10:41 PM »
But the smaller wiring to the smaller breaker may cause a larger voltage drop.

Offline Samo

  • Posts: 491
Re: Kapex Motor Issue
« Reply #8 on: March 25, 2017, 10:55 PM »
Measure a circuit under load!!!!

Offline Holmz

  • Posts: 3408
Re: Kapex Motor Issue
« Reply #9 on: Yesterday at 01:51 AM »
Measure a circuit under load!!!!

But then we cannot speculate...  [scared]
I ain't no mathematician but i have some negative and positive screwdrivers
I ain't no pilot but i have some planes.
I ain't no sucker but i have a vacuum.
And I has me some saws, and some sandpapers.

Offline glass1

  • Posts: 273
Re: Kapex Motor Issue
« Reply #10 on: Yesterday at 07:10 AM »
Watts = amps x  volts. So if the voltage drops the device will pull more amps. 

Offline glass1

  • Posts: 273
Re: Kapex Motor Issue
« Reply #11 on: Yesterday at 07:14 AM »
Voltage drop on 14 wire on 120 volts drawing a full 15 amps over 50 ft is less than 4 volts. Do not believe me, just do the research.

Offline Samo

  • Posts: 491
Re: Kapex Motor Issue
« Reply #12 on: Yesterday at 09:10 AM »
Measure a circuit under load!!!!

But then we cannot speculate...  [scared]

 [doh]

Offline Edward A Reno III

  • Posts: 2816
Re: Kapex Motor Issue
« Reply #13 on: Yesterday at 10:07 AM »
Lol. 


Measure a circuit under load!!!!

But then we cannot speculate...  [scared]
Kapex KS 120 w/UG Cart and Extensions • CXS Set • T18+3 w/Centrotec Installer's Set • PDC 18/4 • TS 75 • TSC 55 • HKC 55 w/420 FSK rail • Carvex 420 w/Accessory Kit • Domino 500 Set • Domino 700 XL • OF 2200 w/Base Accessory Kit • OF 1400 • OF 1010 • MFK 700 EQ Set • LR 32 • MFS 400 w/2000, 1000, and 700 extensions • Rotex 90 • Rotex 150 • LS 130 • ETS-EC 150/5 • ETS 150/3 • RTS 400 • RAS 115.04 • HL 850 • CT 26 w/Long-Life Bag • CT Sys w/Long-Life Bag • MFT/3

Offline Cheese

  • Posts: 2785
Re: Kapex Motor Issue
« Reply #14 on: Yesterday at 11:19 AM »
But then we cannot speculate...  [scared]

 [thumbs up] [thumbs up]