34 replies to this topic

[Bags]

This is Richard Mack’s brushless road car. He asked me to post these.

 

 

 

[Eddie Fleming]

Well it looks cool. 

 

How does it run?

 

Does it have mid range speeds or just on and off? 

[bbr]

There's a video clip on his Facebook

[Bags]

It has all the functions from brakes to throttle control which are adjustable on the controller.

[MSwiss]

Well it looks cool. 
 
How does it run?
 
Does it have mid range speeds or just on and off? 

 

It looks pretty good, but slot cars always look fast on video, to me.

He mentioned he has to change the gearing.

It's too short, in his opinion.

It would be fun to see with him running against a normal car, of the same type.

[bbr]

What is cool is that motors are cheap ($10-15), the ESC is about $50-70 plus the mods to make it work.

And virtually no maintenance.

[Eddie Fleming]

What is cool is that motors are cheap (10-15$), the esc is about 50-70$ plus the mods to make it work.
And virtually no maintenance.

The motors i my cars are in that price range and I do no motor maintenance other than a drop of oil now and then, and they require no esc. Now if for that price they run like a open motor or last for ever or every one is a rocket then that's cool.

 

Don't think I am against the idea I just think your selling points are not strong.  

[Zippity]

Brushless mule on the track
 
Absolutely Brilliant

[Bags]

The motors i my cars are in that price range and I do no motor maintenance other than a drop of oil now and then, and they require no esc. Now if for that price they run like a open motor or last for ever or every one is a rocket then that's cool.

 

Don't think I am against the idea I just think your selling points are not strong.  

What happens when you run those motors 150 laps without a break? 

 

Yes they do last a lot longer than a brushed motor.

[bbr]

Here is my understanding of a competitive motor program.
Retro: test 100 motors to get 10 raceable motors. Each good motor good for five races?
Group motors (12, 27, opens) run one race, replace brush and refresh comm if necessary.

Now the cost of those programs are about the same.
There's a lot of work in each of those programs if you want to be competitive.

If a brushless setup is cheaper and less work, I'm in. I'm sure there can be some blueprinting of the brushless motor like balancing of the rotating sator, but done once it should be good. You could run a entire season without removing the motor, yeah!

[tonyp]

Brushless motors are just like brushed, no two run the same. They can also blowup and a percent
of the performance depends on the quality and adjustability of the Speedo.

In RC as much time and money is spent looking for that bullet as was done with the 1/4 priced brushed
motors.


Sent from my iPhone using Tapatalk

[bbr]

Don't doubt that, every competitive endeavor everyone is looking for those extra margins to gain that little extra.

But I like a setup that I don't have to constantly be working on between races.
I have done that and rather spend time with the gf lol

[MSwiss]

What happens when you run those motors 150 laps without a break? 

 

Yes they do last a lot longer than a brushed motor.

Are you kidding?

 

We run 4 hour enduro's with brushed motors all the time.

 

Heats with 180-200 laps, a 1.5 -2 minute break, and so on and so forth, for the 4 hours.

 

Racers don't switch motors, unless there is some sort of mechanical failure.

 

I held a 24 hour enduro on my King, in 2005, using handout $12.49 Parma Deathstars.

 

You could switch the brushes to something like Koford Super Big Foot II's, which all teams did.

 

The winning team switched motors after the first hour, to look for a faster one.

 

Their 2nd one ran the last 22 hours and 55 minutes.

 

It ran 4.5 race laps the first hour, it ran 4.5 race laps the 23rd hour.

 

It looked like it had enough brush life left to run at least another 12 hours.

 

If brushless motors are no more consistent, as Tony, who worked for Trinity, attests, what problem are you solving?

 

Less maintenance at the cost of a more complicated car, with an additional component to mount in the car, and hope it stays there, or doesn't get damaged in crashes?
 

[Alchemist]

Hi Tom,

 

To me, his ESC looks so different than what you use - am I hallucinating?

 

Thanks for posting - it looks awesome!

 

Ernie

[MSwiss]

Don't doubt that, every competitive endeavor everyone is looking for those extra margins to gain that little extra.

But I like a setup that I don't have to constantly be working on between races.
I have done that and rather spend time with the gf lol

What kind of cars do you race that require motor maintenance between races?

[bbr]

Everyone will have reasons for and not.
Just as west coast, east coast retro. Chinese motors, group motors. Lol.

It will change the supply and business end.
But like ev automobiles it will come.
I cannot see for myself buying another brushed motor unless I have to, to run in a race per their rules.
Once the esc configuration is made know, it is what I will be putting it my cars, just my personal opinion. I think it will be cool.

[MSwiss]

Maybe it will catch on, and races will be built around them, but as of now, the only races where that would be legal is 1/24 Eurosport, 1/32 Eurosport, or G7 wing cars.

[bbr]

There's no organization,,, make your own, all you need is a group of racers that are enthusiastic about it

Isn't that how retro begin

Let's say
Gt12 chassis, 1106 8000kv motors
Or something like that
The rest will come...

[Danny Zona]

Do they 2-Speed/shift?

That's all I care about anymore.

[gotboostedvr6]

I raced rc airplanes for long enough to tell you without a doubt that new, top quality brushless motors all perform within 2% of each other at maximum output when using the same speed controller settings.

[MSwiss]

The top 5% of motors that run within 2% of themselves?

Seems like it would be hard to figure that out.

[bbr]

Looking at how brushless are manufacturer, you can see that variations in tolerance of parts are less of a factor in performance.
No commutator, no brush. Less parts that may be out of wack to cause variations in performance.

There's alot guys out there that reviews brushless motors bc the drone thing is hugh.
Bc it is huge motors are cheap, is should be an advantage to our slot racing hobby if we take an advantage of it. That was the thought with chinese motors for retro, but the variations in tolerances of those motors made it a headache.

[tonyp]

Little girl in China still has to put the wire on it and finish assembly. Lol.

Believe me there will be differences. You still have magnets and wire.


Sent from my iPhone using Tapatalk

[bbr]

Look at the motors, there are nine poles n magnets. With brush three poles n two magnets.
With so many poles n magnets variations are less of a factor.

I see the fast guys with deep pockets buy three to five chinese retro motors at every race, and all that work breaking them in n bench and track testing, ugh I'm getting tried just thinking about it. That's what the fast guys do to be fast. I have all the tools n more to do all that, but not the patient lol.
If only 50% of brushless motor are good I would be happy. What's the ratio in retro 10%?

Things never stand still, if you sit still you get pass by.
Like in war, don't stay in one spot too long, lol

[Bags]

Hi Tom,

 

To me, his ESC looks so different than what you use - am I hallucinating?

 

Thanks for posting - it looks awesome!

 

Ernie

Hi Ernie

You are not seeing things......it’s the same switch I use, Richard took all the wires off and the heat shrink too.

It weighs in at a whooping 6 grams plus the 7ish grams for the motor.

Took care of the CG problem don’t ya think? The whole combo weighs less than the brushed motor he used.