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2/04/2010
fathead431 (59%)
how would one measure the rpm of an inrunner motor using this? how can you get the magnet pair number which is needed to measure the kv and rpm from an inrunner? an inrunner has one big ass magnet...
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24/12/2009
adam_one (50%)
How do you find out the no. of poles of your motor?
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Guid0
(75%)
Look inside your motor, count the number of magnets and divide that by 2. 14 magnets equals 7 poles, etc.
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adam_one
(50%)
Thanks!
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magnusEl
(80%)
I do not think that is right.
14 magnets is 7 magnet pairs, but is it pairs or poles you enter in the Kv-Meter?
I think it is poles you should enter, and 14 magnets is 14 magnetic poles. Allways even numbers for magnetic poles, a motor with odd magnetic poles will not work.
It does happend that magnets of same polarity is mounted side by side,(NN SS NN SS for 4 poles) but it is very rare in cheep production motors.
It almost allways is one magnet per pole,
N S N S N S N S for 8 poles.
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27/11/2009
GreaseMonkey (83%)
has anyone tried it on a brushed motor?
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buffmanmarc
(50%)
This will not work on a brushed motor. A brushed motor gives continuous voltage and does not do an on off volatge variation like the brushless motors do that allow you to measure how many times a sec. this happens. You would need a mini tach.
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13/11/2009
wwmilan (82%)
You have to connect your ESC to the receiver as always so you can control your motor, from the cable comming from the K1 RPM meter you have a total of 3 cables , one is RED this one you have to connect to the LIPO positive cable, the socond cable from the RPM meter is BLACK this one you have to connect to the NEGATIVE cable of your LIPO, and the last cable comming from the RPM meter is yellow this will go to any of the 3 cables going from the ESC to the MOTOR. I recomend to use a needle to connect the cables that way you dont have to CUT any cables for the connection.
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26/10/2009
NOSTROMO (72%)
for all of you with doubts, pls check this link h t t p :// w w w .aeorc.c o m /english/index.php?gOo=goods_details.dwt
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supergps
(77%)
link goes to error page, but thanks for showing how to post links :)
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magnusEl
(80%)
aeorcdotcom/english/index.php?gOo=goods_details.dwt&goodsid=225&productname=
You have a manual to download at the bottom of the page.
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26/10/2009
Kaisar (72%)
To make things clear, can you measure KV?
How accurate can the measurement be?
PS very helpful photo Mieciu
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24/10/2009
rooster (70%)
how do u measure motor under load in cars? so when u drive the car then this device can record the result for viewing later?
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wwmilan
(82%)
The unit dont keep the MAX RPM or nothing in memeory , when you stop the motor the RPM will go to zero reading (0),.
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23/10/2009
supergps (77%)
some light please
How does this thing measure rpm? optically?
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Neal T.
(78%)
It counts the pulse on one of the three esc to motor wire connection.
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Jason5001
(4%)
Yes, justas neal said, it has aligator clips to clip on to a motor wire connector and counts the pulses.
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supergps
(77%)
Sorry to bother again but is there any max limit on RPM? the other tach on HK measures upto 32K rpm, which doesn't suit my tacho requirement. Whats the limit on this, if any?
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22/10/2009
Mieciu (81%)
how do you plug this thing to get the measurements? If it's esc plug shown on picture, so how to operate throttle if it's not plugged into receiver...
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Flew Boy
(89%)
judging by the picture there is a + and a - button on the right hand side, so I'm guessing they might be used as the throttle.
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Flew Boy
(89%)
and also there is a plug for 5-6volt power pack if your esc doesn't have receiver power option installed, I'm sure Jason could confirm this for us :oD
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ajazara
(53%)
you can not measure the voltage only with connected esc as shown, im shure there are more plugs....
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demonGti
(61%)
I reckon the buttons are to get an "A" and a "B" reading so the device can calculate the KV. And as ajazara says, there must be a cable to measure battery voltage because you will only measure the BEC voltage on the ESC RX wire.
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Neal T.
(78%)
At the end of the servo wire is the connection to the system:
1. a T-plug that connects between battery and esc
2. an alligator clip that connects to any of the three (3) motor/esc wires
The photo does not show the end of the servo wire so you cannot see the T-plug and alligator clip.
The other 2 pins on the Kv/RPM meter is for a separate battery if you are testing a system using less than 9volts. The Kv/RPM meter requires 9volts to operate.
You can search the internet for AEO KV/RPM meter or this HobbyKing link:
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Neal T.
(78%)
Sorry!
The Hobby King link is:
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Mieciu
(81%)
OK, here is what I found :-)
it uses hall rate sensor
kvmeter photo
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Turbobeaver
(97%)
Thanks Mieciu.With the addition of your photo to the discussion,it finally all makes sense in how it all connects up.A picture truly is worth a thousand words.
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supergps
(77%)
The picture was definitely helpful. Thanks. But, I read somewhere that the hall effect sensor is optional.. as in.. for BLDC motors, use that croc clip, for other purposes, get a HE sensor.
HK, please confirm this and whether any HE sensor is included/separately available.
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NOSTROMO
(72%)
for all of you with doubts, pls check this link
h t t p :// w w w .aeorc.c o m /english/index.php?gOo=goods_details.dwt&goodsid=225&productname=
you know, delete the spaces in web address
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gsnflyt
(28%)
The K1 RPM-KV meter WOULD HAVE been perfect if it measured watts/amps/AH. A push button to switch from RPM/KV to volts/amps/watts/AH and maybe with a built in servo driver to control the speed controller would be nice too...Hint-Hint
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electricfly2002
(80%)
Link to manual is w w w .infinity-hobbydotcom/main/download/K1.pdf
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boss-fet
(41%)
Works well. You will need to know the pole count of your motors to use. The rpm/kv is way off if you dont pick the correct value. Great tool to check if your motors have lost rpm once you get a baseline.
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kerrylaw7307
(54%)
2 buttons on the KV meter:
Button A** used to choose the parameter displayed on the screen as main display.
Button B** used to set the correct number of pairs of magnet poles.
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