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Old 10-13-2006, 07:43 PM   #1
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i was trying to cut the comm of my motors. i use team cobra lathe ,i use the pulsar comp 1 charger to power it. the motor i use to run im my lathe is an old stock motor 24t. and while i was cutting . i want to level the cut from end to end of the com. unfortunatley my comm formed a cone. so to even it out i thant the other end to be the same circumference . when the bit is on its way to the larger end my lathe will just stop. even if i go up to 5v on the power. is there any thing i missed out?? i just want my comm to be level.


thanx.
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Old 10-13-2006, 07:54 PM   #2
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It sounds like you are trying to cut too much on one pass, and the amp draw is exceeding what your charger will produce. I would try 2 things...

1.) back the bit off and make more shallow cuts instead of trying to make one large cut

2.) use a 4 cell battery pack instead of a charger to power your lathe, so there is no amp limit.
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Old 10-13-2006, 08:11 PM   #3
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it also sounds like your lathe is out of whack a bit. ask around at your local track, there may be somebody there who knows how to re-align it. if not, check with Cobra and see if they can fix it for you.

a cone shaped com will not perform well at all.
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Old 10-13-2006, 08:17 PM   #4
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whats " out of whack"? not align? which one is not align?
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Old 10-14-2006, 02:52 AM   #5
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Quote:
Originally Posted by pinggoy
whats " out of whack"? not align? which one is not align?
If you have a squared peice of metel, I.E. a small carpenters square.

Here is a link...
http://woodworker.com/cgi-bin/FULLPR...5&LARGEVIEW=ON
the part number is 103-547
It only costs $16.00

You take the metel piece and make sure your guides are square to the base.
If they are out even a little then your cut will be cone shaped.
I hope that makes sence. PM me if you need any more info.
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Old 10-14-2006, 08:13 AM   #6
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Quote:
Originally Posted by Mr. Shookie
If you have a squared peice of metel, I.E. a small carpenters square.

Here is a link...
http://woodworker.com/cgi-bin/FULLPR...5&LARGEVIEW=ON
the part number is 103-547
It only costs $16.00

You take the metel piece and make sure your guides are square to the base.
If they are out even a little then your cut will be cone shaped.
I hope that makes sence. PM me if you need any more info.
-Shookie <><
.


I have a cobra lathe myself and that was at first a problem for me too. If you have the pin for the brush hood alignment tool set. Use it to help align your lathe (or press a rod out of a old armature).

1) Lay it on the lathe as it were the comm.

2) Work cutting bit back and forth as close as possible to alignment rod.

3) Once you can tell which setting block is off. Loosen the two bolts from underneath to adjust it.

What you are looking for is to have the tip of the bit almost touch the rod as you it pass the glide left and right. Try to adjust it until the bit tip til it is almost touching the rod as if the rod were the comm you were going to cut. It is fairly easy to do. Mine work like a champ since I adjusted the setting blocks. Hope this helps.
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