Cutting a motor commutator & motor tweaks

[Rockcrawler]

Originally Posted by killswitch

I have used and owned other lathes over the years and I really like the Hudy stuff. I had a manual one that I scored in a trade during my last spin with carpet racing and it was really nice and a friend had the automatic one that was really nice. At one time I had a trinity lathe that used bearings instead of V blocks and it was great until the bearings started wearing out. I wouldnt get a consistent cut because the arm and bearings would float a bit due to slop. I dont think Ill ever go back to that style.

Yeah, I have a hudy with the worn bearings......going to order the V-blocks when I get a little extra cash. I like it because it will cut the puller comms.

[Rockcrawler]

Originally Posted by IDnewcrwlr

cool, i guess what i should have asked is is there one in particular that i should try and grab up over another?? i would like to spend no more than 150 IF possible. .. . thanks for the reply. ima have to check out that rctech NOW

You can get most of them for around $50 now that brushless has taken over the onroad racing. I did pay $100 for my Hudy but should have waited a little bit for the price to come down.

[TEDROCKZ]

There are several on the Bay right now, a couple of good deals

[Rockcrawler]

Well, I am about half way through reading Big Jim's RC Motor Black Book. I was getting a little bored with it at first because it was going through all the basics. Its starting to get really good though. Learning some stuff that I didn't know, and a lot of important stuff that I had actually forgotten about.

If you don't have one of these books, I highly suggest you pick on up if you are serious about taking care of and getting the most out of your motors.

After just the first half of the book, I am curious as to what I can do even with a Integy motor now that I know what causes the loss of torque in most of them. They will spin up OK (RPM) but not much torque.


When I get some time at home...........Its on with the dyno and lathe.

[EeePee]

Originally Posted by Rockcrawler

Learning some stuff that I didn't know, and a lot of important stuff that I had actually forgotten about.

Gimme three examples.

[Rockcrawler]

Originally Posted by EeePee

Gimme three examples.

I will give you one.

And I CANNOT believe I forgot about this........

Most of the current runs through the brush hoods, not the shunts. The shunts them selves are only rated at 10 amps.



Back to reading.

[EeePee]

That's why you need clean brush hoods and brushes.

[Rockcrawler]

Originally Posted by EeePee

That's why you need clean brush hoods.

Yep.

I think I am going to tear down my motors after ECC and go through them completely. Run them on the dyno and find the sweet spots.

[TEDROCKZ]

Originally Posted by Rockcrawler

I will give you one.

And I CANNOT believe I forgot about this........

Most of the current runs through the brush hoods, not the shunts. The shunts them selves are only rated at 10 amps.



Back to reading.

Some brush manf. come out with a twin shunt brush(parallel) but still sucked.

Also

[EeePee]

After?

Before.

And, ha!

[Rockcrawler]

Originally Posted by TEDROCKZ

Some brush manf. come out with a twin shunt brush(parallel) but still sucked.

Also

Yeah, they still only handle 10A though......just a gimmick more or less.

And You damn right.

Originally Posted by EeePee

After?

Before.

And, ha!

Got to get a new bit before I start cutting new motors......broke right now.

[Rockcrawler]

Come on JRH.......I see you peaking in.

Anything to add?

[TEDROCKZ]

Originally Posted by Rockcrawler

Got to get a new bit before I start cutting new motors

I'll send you one tomorrow.

[Rockcrawler]

Originally Posted by TEDROCKZ

I'll send you one tomorrow.

THANK YOU!


Well, looks like I might have some fresh tuned motors for ECC then.

[Rockcrawler]

Still takes a little while to read...




<---------------

I am on page 100 though.

Originally Posted by TEDROCKZ

Also

[TEDROCKZ]

Originally Posted by Rockcrawler

If you don't have one of these books, I highly suggest you pick on up if you are serious about taking care of and getting the most out of your motor

They are hard to find, saw one go for $130 a couple of weeks ago. Also the OG tools are hard to find. I did manage to find one of Jims Sonic Fiddle sticks and a set of his hood alignment tools, after many hours of surfing. Also looking for some of the Parma Comm cleaning sticks, no luck on those

Nif-tech and Muchmore Racing has some cheaper versions.

[Rockcrawler]

Originally Posted by TEDROCKZ

They are hard to find, saw one go for $130 a couple of weeks ago. Also the OG tools are hard to find. I did manage to find one of Jims Sonic Fiddle sticks and a set of his hood alignment tools, after many hours of surfing. Also looking for some of the Parma Comm cleaning sticks, no luck on those

Nif-tech and Muchmore Racing has some cheaper versions.

Didnt know they were that high.


Yeah, I am going to order the Racers edge ones and try them out.

[TEDROCKZ]

Anyone looking in ever try these. Found them on the Bay for a buck per set. Picked up 14 sets. The OG listed for 12-14 bucks at one time. I'm not really familiar with them.

[Rockcrawler]

Originally Posted by TEDROCKZ

Anyone looking in ever try these. Found them on the Bay for a buck per set. Picked up 14 sets. The OG listed for 12-14 bucks at one time. I'm not really familiar with them.

Attachment 129418

I thought the more silver in the brush, the more wear?

Unless they mean comm wear..........

[JohnRobHolmes]

Originally Posted by Rockcrawler

I thought the more silver in the brush, the more wear?

Unless they mean comm wear..........

You are correct. More silver makes brushes wear faster.


You have email btw.