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Latest brushless motor news


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#1 bbr

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Posted 29 November 2021 - 03:44 PM

From the uk

https://www.slotcarr...5LDHiim6s-iw8EY
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#2 Alchemist

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Posted 29 November 2021 - 04:58 PM

That's great to see that other slot car enthusiasts are looking into making the brushless motors work.

 

Thanks for sharing Mike!

 

Ernie


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#3 Phil Smith

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Posted 30 November 2021 - 10:34 AM

This setup seems to be a big advance in the design. I guess it didn't work that well as they raced a different setup.

 

wp7c78f752_06.png


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#4 Eddie Fleming

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Posted 30 November 2021 - 11:23 AM

At this point it is no news.

 

when someone comes up with a package that you can put in your car for X#$, or at least detailed instructions that the average individual can follow then it will be something.

 

Until then it is just some guys playing around with some different tech. Cool but so far it has no real effect.


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#5 bbr

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Posted 30 November 2021 - 06:48 PM

it did not take me that much effort to get one running... and I never had any experience with brushless motors.
 
destroyed a couple of motors figuring how to replaced the shafts, but sourced the right tools and it is a snap now.
 
the only caution is to wire the polarity correctly, or you blow the esc!
 
sort of fun to be hot rodding this thing...
 
it will be more accessible when more esc for slot cars becomes available


_20211025_101910.JPG
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#6 rmjlmartin

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Posted 30 November 2021 - 07:57 PM

Where can I get a brushless motor setup like you have, MIke? I've seen some of the other threads on it, and it looks interesting. And what kind of performance do you get with it?


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#7 bbr

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Posted 30 November 2021 - 09:00 PM

motors are available from any drone vendor. 110x series motors. they are about 4000 - 8000kv specs.

xxxxkv x track volts = rpm

 

I am using Emax, check their website -- https://emax-usa.com...06&type=product

 

that's the easy part...

 

the hard part -- esc must be tweaked or designed for slot cars application.

Mack and company are using an esc designed for slot car, not available for the general public as of yet.

Tom "Bags" has a tweaked esc ( I have been using it )

the Mack esc turns on at 2v I believe, which make it very usable for flat tracks ( the chips turns on at 2v )

the Tom esc turns on at 5v (pretty much standard drone/rc car ), a bit difficult for flat track ( but he is still playing with it to make it more friendly ), very usable for high downforce high speed tracks

 

as for racing them... eurosport and G7 are the only classes they are legal in as of now

Mack and Budge has shown they are competitive in eurosport

theoretically, I worked out G7 times are possible and have a motor that is strong enough to do it, but I have no G7 experience... but will try to put together a G7 package


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#8 W. J. Dougherty

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Posted 01 December 2021 - 02:31 AM

I didnt understand your comment about doing something to the shaft. Could you please explain, maybe with some pics if necessary? What about installing in the chassis? Thanks
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#9 bbr

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Posted 01 December 2021 - 04:45 AM

The motor has 2mm bbs. The shaft is 2mm, but the portion that sticks out is reduced to 1.5mm, you could use 1.5mm pinons, but it relatively easy to just replace it with 2mm shaft, I used koford 2mm axles.

The motor "base" with the mounting holes is aluminum, I made a brass bracket that the motor screws to and soldered that to the chassis.

Mack is a chassis designer/manufacturer and he made chassis specifically for brushless motors.
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Mike Low
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#10 Bags

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Posted 01 December 2021 - 07:10 AM

C78BF57C-77C7-4FD8-878E-C9C82D3630BC.jpeg

 

Hope this helps…..


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#11 Bags

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Posted 01 December 2021 - 07:14 AM

 

wp2244755b_06.pngwpa71f6770_06.pngwpfc22a2e1_06.png


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#12 Bags

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Posted 01 December 2021 - 07:51 AM

Mounted in a bracket…..note the end of the shaft sticking out of the bottom.

 

2C789BA4-390F-4A49-8263-9C24B7AF68FC.jpeg


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#13 rmjlmartin

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Posted 01 December 2021 - 08:26 AM

Thanks Mike, that looks interesting. At this point, I'm not as interested in racing it as in having a very low-maintenance play car.

 

Tom, I assume that you're the Bags that Mike mentioned? Where do you have the ESC available to buy, and what is the cost?


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#14 Pappy

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Posted 01 December 2021 - 09:21 AM

the only caution is to wire the polarity correctly, or you blow the esc!
 

So if you come out of your slot and go into another slot going the wrong way you blow the esc?

 

If so you might want to install  (I think they call it)  a bridge relay or something like that. It will only allow electrical current to go one way. I'm not much on electronics so don't chastise me unto death if I'm wrong about this.


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#15 Half Fast

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Posted 01 December 2021 - 10:05 AM

In life and in technical advances:

 

"First they ignore you, then they laugh at you, then they fight you, then you win”

 

Cheers


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#16 HarV Wallbanger III

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Posted 01 December 2021 - 12:35 PM

Thanks for the info Mike


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#17 bbr

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Posted 01 December 2021 - 03:09 PM

A diode can provide protection, planning to install on power lead.
All this is a learning process and will get refined.

As with neo HO cars, when Nick Toma drop one of the first ones in the slot,,, it was fast, but hit the wall it became a kit. Now they are missiles and bulletproof
Mike Low
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#18 Don Weaver

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Posted 01 December 2021 - 03:26 PM

So if you come out of your slot and go into another slot going the wrong way you blow the esc?

 

 

 

Or a newbie track marshall  :crazy: !


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#19 NSwanberg

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Posted 02 December 2021 - 03:59 AM

Seems like there ought to be an opportunity to use the dynamic braking voltage to keep the ESC powered longer while in race conditions or has somebody already thought of that?


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#20 Half Fast

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Posted 02 December 2021 - 01:51 PM

Do these motors/ESC's permit electronic braking?

 

Cheers


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#21 Bags

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Posted 03 December 2021 - 08:22 AM

Do these motors/ESC's permit electronic braking?

 

Cheers

Yes plenty of brakes just like a brushed motor.


Tom Bagley

#22 Eddie Fleming

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Posted 03 December 2021 - 09:04 AM

A diode can provide protection, planning to install on power lead.
All this is a learning process and will get refined.

 

Would the diode in the power lead effect the breaking?


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#23 bbr

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Posted 03 December 2021 - 04:32 PM

Hmm... Maybe a thermal fuse? MOSFET?


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#24 dickytenkids

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Posted 07 December 2021 - 04:33 PM

raced rhe car in UK ISRA  eurosport race at the weekend ,finished 6th which is a good start 

about where i would have finished if id run my regular euro car .did everything i wanted ,mainly it was a reliability test .

ive probably done well over 1000laps ,no loss of speed just keeps going 

whole car is 5 grams lighter than brushed car .

Tom 

ill have a chat when im not working next

need to build a drag car for friday 


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#25 Bags

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Posted 09 December 2021 - 08:40 AM

Hmm... Maybe a thermal fuse? MOSFET?

If a mosfet can be used, will it be normally open or closed ? Which side would it be put on, positive or negative?


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