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Motors with sealed bushing?


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#1 Troy Beeler

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Posted 10 May 2020 - 09:10 AM

In the case of motors like this. With the com end bushing sealed up with the cap that I assume holds the bushing in. I guess you never oil it? how could you. If the rules allowed? Could you cut a slot in it or drill a small hole. Then you would have the issue of getting metal in the bushing.  

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#2 Rotorranch

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Posted 10 May 2020 - 09:15 AM

Oil it through the hole in the can.

 

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#3 Ramcatlarry

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Posted 10 May 2020 - 09:21 AM

Since the commutator and brushes are also at that end, oiling can be a good way to hurt  performance.  At least when the SP500 early 16D was in service that type of bushing was NOT presenting that problem.


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#4 Troy Beeler

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Posted 10 May 2020 - 09:21 AM

I thought about that. But was afraid of getting oil on the com.



#5 Eddie Fleming

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Posted 10 May 2020 - 10:30 AM

Simple solution. Do not oil that end of the motor.

 

the bushings in this type motor tend to last longer than the brushes and com do. you will probably get better performance because the com and brushes will not get gunked up with oil.


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#6 bluecars

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Posted 10 May 2020 - 10:54 AM

I think I will wait until people start having problems with it before I even think anything about it.


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#7 Ramcatlarry

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Posted 10 May 2020 - 01:48 PM

Not that  'cutting on the sealed motor'  would be legal,  Cutting a groove on the outer shell to allow external oiling to soak in might be a good way to oil 'IF' it is an issue.


Larry D. Kelley, MA
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#8 idare2bdul

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Posted 11 May 2020 - 07:43 PM

Seems like not purchasing it would be a good option


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#9 Pablo

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Posted 11 May 2020 - 08:32 PM

Come on, Mike, you've been in this hobby long enough to know better. The racers don't make these decisions, the track owners and rule makers do. If the rules say to run an unmodified $5 squatty hummingbird with a sealed endbell, the racer has 2 choices:

 

A. Don't race

B. Comply 

 

I'm being as nice as can be. My local track is forcing me to race these Chinese motors, or quit. I chose to continue racing.

Does that sound like a "good option" to you?

Why don't we start a cult and all call it quits?  :diablo:  :bad:

For you to just play it off as an "option" is really disrespectful. The OP is asking a legitimate question. 

 

I'd think a long time poster such as yourself would be able to see the big picture. Shame. Send me a PM and we can flame.

You have touched a nerve here at The Wolcott Ranch. I absolutely hate toothbrush motors as much as the next guy. But disrespecting a guy who asks an honest question, I won't be silent.

 

Here is the way I deal with adversity:

 

http://slotblog.net/...car-motor-swap/

 

The track owner mandated a new cheap Chinese motor. I wasn't asked for my opinion. But I politely complied. Not only that, I showed my competitors how to do it right. Are you really suggesting I shouldn't have purchased a motor? In protest?

 

Come on Mike, you are way off base. Can you at least re-word your post?  :)


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#10 bbr

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Posted 12 May 2020 - 01:17 AM

I've done it before and will do it again..... if I can't bear the format, rules, or people of a racing series, I will race something else, there are plenty of options out there.

 

It is a hobby, it doesn't put food on the table, if it is not enjoyable, why do it???


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#11 Brian Czeiner

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Posted 12 May 2020 - 10:31 AM

Pablo and Bluecars, thank you for a much more understanding view point for over all positive hobby health, trying something new and not jumping to conclusions.  We need more folks like you.

 

 

To my knowledge, this is not a Chinese motor. It is sourced from Europe. How do I know? Because I am the one who sources them. Their intended use was in robotics, which means long life without repetitive oiling. Mr. Flemming is probably correct in that the brushes will expire long before the bushing does.

 

We initially tested ten of them for six months 4 hours twice a week without any bushing failure. Since we were trying to promote failure, oiling was only ever at the pinion end bushing before testing. We then tested all 10 against a new motor. There didn't seem to be any significant performance loss either. We then put one of the original ten on 18 volts and let it run for 7 days none stop. That was a year ago and the motor is still running in my grandson's car. It is beginning to show signs of abuse and some performance loss. Though in the hands of an adult racer, it will hold it's own in a pack.

 

Will they run forever? No. Will there be a percentage that might not be as durable? I would expect it. Will there be some that perform better than the rest? I would expect that too. As previously stated, this is suppose to be fun. I felt this motor serves that purpose very well, which is why I decided to carry it.

 

Some out of the box thinking is what gave us all of our greatest achievements. Could it be that "we" are our worst barrier to hobby improvement?


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#12 Eddie Fleming

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Posted 12 May 2020 - 11:00 AM

Brian

 

 On your web site it looks like this motor may have a ball bearing in the can end. Is that correct and do you have any idea what is in the other end?

 

Eddie will do just fine. Mr Fleming sounds a little snooty.  :)


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#13 MSwiss

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Posted 12 May 2020 - 02:58 PM

To my knowledge, this is not a Chinese motor. It is sourced from Europe. How do I know? Because I am the one who sources them.

Here's a Chinese motor with that same endbell.

Unless you think someone in Europe tooled up their own endbell, and decided to copy the Chinese motor, plus figured out a way to make it as cheaply, as the Chinese do, your motor is Chinese.

That said, if I was a racer, I wouldn't worry about oiling it.

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#14 Troy Beeler

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Posted 12 May 2020 - 02:59 PM

Heck fella's I picked this motor up to run a Douche bag pump!



#15 Brian Czeiner

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Posted 13 May 2020 - 02:25 PM

Brian

 

 On your web site it looks like this motor may have a ball bearing in the can end. Is that correct and do you have any idea what is in the other end?

 

Eddie will do just fine. Mr Fleming sounds a little snooty.  :)

 

To tell the truth, we haven't taken one apart. It was on the "to do" list and got pushed aside like so many other things do. 

 

 

 

I don't know where the UK gets them. They may source them too or they might have tooled their own. I just don't know. Does it have Chinese characteristics? Yes. But so does a Toyota truck. Those are made here in Alabama. It just isn't worth getting all ruffled over. I stated our testing procedure and oiling. As MSwiss said, I wouldn't worry about oiling it. If they don't sell, I have a long time supply for my garage track. But so far, I am waiting for my third order of them to come in.


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