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Old May 07, 2005, 08:35 PM
hoppy is offline
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Hacker 20-20L knock????


Hmmmmmmmm, my 20-20L has a knock - at low speeds it has a definite knock knock knock like a piece of cardboard hitting the spokes of bicycle wheel. Other than that it runs well. Can't hear it by spinning the motor free hand...it only is noticeable with the power on.
Any comments?


With a 10x4.7 GWS SF, it draws a little over 19A at full throttle from a PQ 3s1500. Only takes 1/2 throttle to fly the 23oz Decathlon.
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Old May 07, 2005, 11:14 PM
RickC2009 is offline
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What speed controller are you using?
Old May 07, 2005, 11:21 PM
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CC25 V1.10

I can't give you the parameters because it won't let me access the info without upgrading to 1.2 or whatever.
Old May 07, 2005, 11:23 PM
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Ive seen this recently with a couple outrunners on castle escs...I am curious about it, but dont have the answers for you.

sorry,
David
Old May 08, 2005, 12:23 AM
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I saw another post saying the CC doesn't work well with the hackers. I would try another speed controller just to see.
Old May 08, 2005, 01:00 AM
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mmmm


try a hd prop i believe and ive heard slow fly props make some weird noises at revs.
Old May 08, 2005, 12:26 PM
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Did a little more listening and spinning and unfortunately, it is in the motor.... At one location in a 360 degree spin, the click is very noticable. Something is making hard enough contact to make a very audible metallic clank. Time to call Hacker....

Sounds like a loose magnet....
Last edited by hoppy; May 08, 2005 at 04:23 PM.
Old May 20, 2005, 10:11 PM
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Hacker says one of the magnets had moved - sending a replacement.
Old May 20, 2005, 10:23 PM
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excellent.

Did you ever get to fly it?

Killer
Old May 20, 2005, 11:41 PM
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Should be the last motor brand I'd expect that to happen too. I guess I'll stay with the cheapies.
Old Jul 18, 2005, 09:43 AM
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Quote:
Originally Posted by scratchandbash
Should be the last motor brand I'd expect that to happen too. I guess I'll stay with the cheapies.

It is a cheapie

The motor is GREAT!! I'd buy another one in a flash.


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