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Old Dec 29, 2005, 01:59 PM
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Thisted, Denmark
Joined Jul 2000
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CD-rom motor-test-stand

hey

I just made this teststand and thought you should see it.
The 2 multimeters are build together, the esc is connected to a homebuild servotester and as you can see the motor is put on a letterweight. I test all motors as a "pusher".
I just connect the accu I want to use in the setup, to the meter on the right, turn the button on the "nice blue" box , and now I can see Amps, Volt and thrust. My plan is to put a rpm-meter on it too.


What do you think, smart isnīt it.
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Old Dec 29, 2005, 02:42 PM
UH-60 Blackhawk Mechanic
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United States, TN, Clarksville
Joined Feb 2004
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I like it, nice and simple. good job, can't wait to see it with the tach/rpm meter.

Brandon
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Old Dec 29, 2005, 02:53 PM
Bob S
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Austin Tx
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How is the motor mount connected to the scale?
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Old Dec 29, 2005, 04:42 PM
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Hans's Avatar
Thisted, Denmark
Joined Jul 2000
257 Posts
I simply used some very strong dubblesided tape I had ( I don`t know if it is called that, but you know the kind of tape with glue on both sides), but you could use any kind of glue or epoxy.

sorry if my english is a "little danish", but there is a reesson

here are some closeups:
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Last edited by Hans; Dec 29, 2005 at 05:06 PM.
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Old Jan 01, 2006, 04:11 PM
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St Catharines Canada
Joined May 2002
910 Posts
I would get a large piece of plexi glass or lexan prefered to use as a shield just in case your closely looking at the readout and the motor throws a blade.

Richard [ask me how I know ]
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Old Jan 03, 2006, 01:03 PM
Registered User
the scene of the crash
Joined Mar 2005
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i would go woth lexan from my bad experience plexiglass will shadder.(thrown blade@ 87,000rpm)
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Old Jan 03, 2006, 01:44 PM
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Joined Aug 2004
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Quote:
Originally Posted by burro breath
i would go woth lexan from my bad experience plexiglass will shadder.(thrown blade@ 87,000rpm)

What 'blade' did you have spinning at 87,000rpm and what motor was spinning it?

Latrans
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Old Jan 08, 2006, 01:27 PM
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Thisted, Denmark
Joined Jul 2000
257 Posts
Hi Iīm back

I have now put a tachmeter on my test-stand. It gave me some problems but now it works.
I took the "eye" out of the tachmeter and placed, pointing down,it in the white plaststand you can see on the picture. Then I placed a small diodelight on the scale, pointing up, now it works great.

Now I can see A, V, rpm and thrust at the same time, what more do you need

What do you think of it? donīt you think it is a little smart
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Old Jan 08, 2006, 02:09 PM
Spring time, planes bloom
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near UNC Charlotte, NC
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Man, that looks great

That is something that I need to build
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Old Jan 08, 2006, 02:42 PM
Flying motor mount master
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San Jose, California, United States
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Hans

Now all you have to figure out is how to measure noload rpm!!!


fb
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Old Jan 08, 2006, 03:15 PM
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Thisted, Denmark
Joined Jul 2000
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Quote:
Now all you have to figure out is how to measure noload rpm!!!
You had to say that, didnīt you? X%#" , now I just thought I was finish with it, and I was very happy with it. Is there anything else you want me to put on it, now that I have to start all over again.
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Old Jan 08, 2006, 03:21 PM
Spring time, planes bloom
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near UNC Charlotte, NC
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You could put a microwave next to it so you can have fresh popcorn while testing how long will the motor fly full throttle on a fresh pack of batteries
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Old Jan 08, 2006, 03:24 PM
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Thisted, Denmark
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Lol
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Old Jan 08, 2006, 03:41 PM
jj1
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Finland
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Quote:
Originally Posted by fly_boy99
Hans

Now all you have to figure out is how to measure noload rpm!!!


fb
Noload can be measured without any prop:

-JJ
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Old Jan 08, 2006, 04:26 PM
Good Better Best quest.
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Australia, VIC, Cranbourne East
Joined Apr 2004
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Quote:
Originally Posted by jj1
Noload can be measured without any prop:

-JJ
Will it read true rpm's with any number of stator /poles ?
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