Cutting a motor commutator & motor tweaks

[EeePee]

This is the best thread on RCC.

So now I ask, what direction is the proper direction to cut the arm!? Something I've never thought about before.

Hmmm. It doubt it matters after about 3 seconds of break in. If it did, and you owned a MOA truck, you'd want one of each...

 

[TEDROCKZ]

This is the best thread on RCC.

So now I ask, what direction is the proper direction to cut the arm!? Something I've never thought about before.

Hmmm. It doubt it matters after about 3 seconds of break in. If it did, and you owned a MOA truck, you'd want one of each...

If done right, would not think it would be noticeable. Unless you have severe OCD:mrgreen:

 

[EeePee]

What'd you say? I was staring at the picture of those three bits and was zoned out thinking what would happen if you rotated the two forward 90 degrees. Then thought they were the wrong direction bits.

 

[TEDROCKZ]

What'd you say? I was staring at the picture of those three bits and was zoned out thinking what would happen if you rotated the two forward 90 degrees. Then thought they were the wrong direction bits.

I said OCD not ADD

 

[EeePee]

What? I was thinking about what would happen if I put a motor on each side of the motor plate on my Axial AX10 transmission. Is that redundant? Axial AX10? Where would I put the pinion gear? I might need two spur gears.

 

[Manning]

Harbor freight sold a bit set that used replaceable carbide inserts, and it included a pointed tool holder that did not have a relief angle ground into it (not right or left hand). I use it and can cut either direction. When the cuts aren't smooth anymore, I rotate the insert to an unused point. Quite "handy".

Doh, here it is. Not sure why I couldn't find this on the HF site earlier.......I use the one on the far left side of the pic.
http://www.harborfreight.com/5-piece-indexable-carbide-tool-set-39931.html

 

[Speedracer19]

Talked to Destroyer via phone today & he may have a problem with the carriage because when he tightens the bit the carriage gets tight & will not move very smooth.
It's hard to fix something on the net & phone.

 

[EddieO]

I am gonna guess at this point, the lathe has been dropped........it happens. Everything looks good, but it will never cut right again.

EeePee, I don't understand your question?

Later EddieO

 

[EddieO]

I still think he has the wrong bit......I swear the integy lathes were weird...

http://www.rctech.net/forum/r-c-items-sale-trade/447009-fs-brushed-motor-lot-xipp-lathe.html

Look at the pic.....

I swear the old xipp xmod 1 and 2 used an AL bit and the 3 (which is what he has) used an AR bit....

I may be losing it...

That thread he posted, is an old reposted Big Jim......I don't think the xmod 3 came out till after that was posted.

Later EddieO

 

[EddieO]

Ok, found it...

http://www.rctech.net/forum/electri...n-cut-my-integy-super-lathe-3-any-help-3.html

You have the wrong bits......read that thread, around the end of page 2, into page 3, it uses AR bits, not AL......the Super mod 1 and 2 used AL.....ignore the last post though, guy was clueless.

Later EddieO

 

[cbr6fs]

Great thread.

What lathe would you guys recommend?
Only ones i can find locally are Integy and i'm really not a integy fan.

 

[killswitch]

Great thread.

What lathe would you guys recommend?
Only ones i can find locally are Integy and i'm really not a integy fan.

Ive always had really good results with my Cobra lathe, but it took a while to set up correctly. Talk to eddie, pretty sure he has a really nice lathe available.

 

[Scattman]

I like my Orion lathe.

 

[whoodie]

Hudy. You can find them relatively cheap on Ebay and RCGroups.

 

[Speedracer19]

I have a Fantom & is easy to use.

 

[EddieO]

Fantom is the best, but they are pretty hard to find. They were a $500 lathe and people didn't like to spend $500 on a lathe.......they made a limited amount.

Hudy is probably the next best option......The Orion, Twister, Much More, Trinity, Reedy (good luck finding one), are good units. Cobra's can be ok, but they got knocked out of whack really easy.

I am not a fan of the integy stuff unless its been checked out and made sure to be square......crappy instructions with them surely never helped. Big Jim was a huge fan of them, but Jim often had product bias based on who was willing to pay him at the time.......Arthur who owns Integy loved Jim.....not only paying Jim for armatures that rarely got wound in a timely manner, but also sending him free stuff......doesn't make Jim a bad guy...wasn't like that with all products, just a few......

Later EddieO

 

[rock hard]

will heat cause a brush [trinity xxx micro] to lose its color?
I have a brush that has turned white-ish,siver-ish as apposed to the dark-ish,silver-ish. and the wire lead from that brush has also turned white [aprox. 1.5 mm,closest to the brush] as appossed to the copper color.
The other brush looks normal as does its lead wire from the brush.

This is from a motor that I know was ran dirty,and expect it was run hard aswell. The inside of the endbell was full of grime and the comm was black

 

[rock hard]

pic......

 

[EeePee]

EeePee, I don't understand your question?

I don't think I actually had a question. :ror:

Or I was thinking in the picture of the three bits, that the two in the foreground were not on the table the right way. They needed to be rotated forward 90 degrees. But I'm not bit master, so I dunno.

Ive always had really good results with my Cobra lathe

Granted a Cobra is all I've used, but I like it. Quick and easy to set up and produces good results, as far as I know. I can't see what could be improved upon it, so I don't care to find a different one.

 

[EeePee]

The inside of the endbell was full of grime and the comm was black

:shock:

Clean is power!

Brushes can change color yes, more so like a blue-ish tint, which I can kind of see there.