Managed to get 1.5kw out of the motor without it complaining.
I'll have to buy one of these soon to run it at 6200rpm:
Either way it's a lot of money.
Last edited by Jonathan; 22-01-2011 at 03:36 PM.
Use a fine oilstone to de burr the slits in the collets as they can have tiny burrs which can be a cause of runout.
When checking the runout it the collet mark the high or low point so you can see that they are in the same place vertically when you measure both positions.
Jonathan i have just seen the pictures of a sample of the cut produced by your machine with the spindle.
All i will say is you have balls of steel.
Sent you a PM
Sent from my HTC Desire using Tapatalk
sorry for my bad english but you'v understood:i am french
i was very interested by your post
and am planning to put one BLDC motor on my home made CNC
can i ask you what kind of alim (not batteries)are you using for these motors and controller?
something like 24 or 48v and 40amp
i would be able to make one if i had a plan
thank you for your reply
Currently I am using batteries, since I don't have a big enough transformer or power supply to run that motor.
One option is to get a toroidial transformer, such as one of these:
Alternatively it may be possible to put multiple cheap computer ATX power supplies in series to get the desired voltage.
for your fast reply Jonathan
i'll see that !!
I have not yet recieved my chucks
I just started doing something similar.
Only I chose a ER11 C8 L100 spindle. When I got the bearings, I discovered why the spindle was so cheap! The shaft is not parallel. The spindle falls into the bearing with no effort at all. 8.00mm at collet end to 7.93mm over the length.
These spindles must be quality rejects. Thank God for adhesive!!.
I found a bloke in New York who makes spindles for PCB mill & drill. http://cnconabudget.com
You'll find detailed photos of the parts -- makes reverse engineering so easy.....
Where the Light was kept during the Dark Ages
hi all, ive been following all the diy spindle projects here with interest. a quick Q' do all of you run BESC's for your motors? ive been looking at hobbyking but their units dont seem to specify as besc or standard esc.
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