73 replies to this topic

[bbr]

Look like the UK is seriously gonna be running brushless.

Been less than a year since Tom B provided Mack the answers he was looking for.

[Zippity]

Following with interest  

[Matt Sheldon]

All the representation on this that I have seen has been very promising. Easy transition at the club level. From a US commerical standpoint it will be much more involved. Evolution is inevitable, but I think we are still a ways away from this being standardized across the board. I do see it as an immediate positive for Eurosports and G27/7 like classes.

[Phil Smith]

Zip you can follow it here: https://www.facebook...308254371195488

[Phil Smith]

This is interesting. From the link above.

 

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[bbr]

All you need is some sort of organization to embrace it,,, who is gonna do it?

Racers will race anything if they think they can win

This package runs 2.3s all day at piranha raceway. And there's more speed to be had!

[Brian Czeiner]

what does a little motor combo like that run? Motor and board that is?

[bbr]

1206 brushless:

 

 

 

esc from Tom B about 75$

[Zippity]

I intend turning my 1/24 Open Horky Chassis into a Brushless Motor slot car in the near future.

 

I have just ordered a SunnySky R1106 KV8000 Brushless motor from China (xia aliexpress.com) and a Talon25 AMP ESC and a Castle Link V3 USB programming kit from the USA.

 

Haven't really got a clue as to what I am doing, but it will be a fun exercise, I am sure     

 

Ron Thornton

[Bags]

Ron what voltage does the track run on? 
Be aware of the “S” rating on the motors! That’s the recommended power the motor will run in. 1 S is 4.3 vdc so 3s equals 12.9 vdc.

A higher kv rating does not mean it’s the best thing to use, they usually have a lower S rating.

 

Look for motors that have a 2-3 or even a 3-5 S rating, they won’t smoke as easy.

 

Good luck on the brushless adventure!

 

Bags

[Bags]

This is the one stop shopping place to find motors. You can shop by size and kv rating.

 

 

https://pyrodrone.co...lections/motors

[jimht]

This is the one stop shopping place to find motors. You can shop by size and kv rating.

 

 

https://pyrodrone.co...lections/motors

This shows the drone/FPV market is disgustingly huge. I am offended and jealous (and old) but the size of the market will give us a huge supply of ridiculously cheap high speed motors to play with.

 

Perhaps we can get past the "I've only got one really fast car but I've got lots of expensive motors for it" concept...more cars, cheaper!

 

The Hobby was stronger when everyone had a box full of cars instead of a box full of parts.

[Bags]

Sorry to upset you with the bad news Mr. Honeycutt…….not   

Beats the variety of tin can motors you have to put up with. These don’t wear out near as fast either.

 

Did you the check the prices and specifications on em?
 

 

Thank you for the comment.

[Eddie Fleming]

That link is not working for me. 

[Bags]

Google pyrodrone 

[Zippity]

Ron what voltage does the track run on? 

 

 

12.5 volts

[Bags]

 

12.5 volts

You might have a problem then….make a couple of laps then check the temp with a heat gun. They don’t like 175-180 degrees Fahrenheit for too long.

 

Also an 8000kv Sunny Sky is rated for 2s…..that’s 8-9 vdc max operating power to be applied to the motor! 

Like I say in this prototype world only one way to find out……Go for it!

[Phil Smith]

This shows the drone/FPV market is disgustingly huge. I am offended and jealous (and old) but the size of the market will give us a huge supply of ridiculously cheap high speed motors to play with.

 

Perhaps we can get past the "I've only got one really fast car but I've got lots of expensive motors for it" concept...more cars, cheaper!

 

The Hobby was stronger when everyone had a box full of cars instead of a box full of parts.

 

Jim, Richard Mack uses an EMAX 1108 6000kv. He's apparently had good luck with it. No need to allow all brands and models to be used. It could be limited to this or some other make and model depending on the class.

 

https://emax-usa.com...motor-5200kv-1#

[bbr]

EMAX 1108 6000kv maybe marginal on USA power tracks where we run 13v+

it is a 3s rated motor, I believe 

my experience with running hi kv 3s motor = runs fast but will burn up

if your controller has adj v choke, you can turn down v and run.

 

EMAX 1108 4500kv runs forever on 13.8v

have yet to try the EMAX 1108 5200kv

 

I have a collection of motors, trying to prep them all for running

[Phil Smith]

What voltage do they run in Europe?

[Bags]

What voltage do they run in Europe?

 

Phil the UK tracks run 12v. Here in the States the voltage is higher on most tracks. We have done the majority of the testing on 13.6v.

The brushless controller that is being developed in the UK has reverse polarity protection on it provided by a mosfet. The mosfet draws .7v to power it.

That leaves 11.3v to power the controller from the track. So less power to the brushless motor, remember kv x vdc= rpm.

Last month the brushless cars went to a track that had 12.3v for power. Martin told me how much easier the cars handled on less power! 
 

Let’s do some math ( cuz we can ) 11.3x6000=67,800 rpm.  The cars have .670ish tires geared 10x40 64 pitch. That high ratio with less track power helps smooth out the “power band” that they are running in. The flat tracks don’t have the trigger to the wood banks like we have here. The driving style is kinda like reverse from here, they only hit the top for a blip. We blip to slow down. So math again…13.6x5200=70,720rpm .760 tires 13x33-35 + too the wood banks, they ain’t using it all and neither are we….still a lot to learn from here.

 

There are a few things to consider when trying to setup a brushless ride that can run 1000’s of laps. 
 

[jimht]

 

Jim, Richard Mack uses an EMAX 1108 6000kv. He's apparently had good luck with it. No need to allow all brands and models to be used. It could be limited to this or some other make and model depending on the class.

 

https://emax-usa.com...motor-5200kv-1#

Need, who said anything about need? LOL.

 

What's wrong with allowing a bunch of cheap motors in an open class?

 

Sounds like fun...unless you think there's no fun in figuring out which combination of ingredients is best.

 

Time has shown there's no savings in restrictions so why bother?

 

As I've said before, if you want to limit speed and expense, you can only do it by setting a break-out time, not by controlling the equipment. 

[Bags]

 

12.5 volts

What configuration banked flat?

[Zippity]

What configuration banked flat?

 

Wash your mouth out!!   

[MSwiss]

Need, who said anything about need? LOL.
 
What's wrong with allowing a bunch of cheap motors in an open class?
 
Sounds like fun...unless you think there's no fun in figuring out which combination of ingredients is best.
 
Time has shown there's no savings in restrictions so why bother?
 
As I've said before, if you want to limit speed and expense, you can only do it by setting a break-out time, not by controlling the equipment. 

Jim,
I think the future for brushless is as Richard Mack sees it.

As a cheaper alternative to a Eurosport motor, running on a flat track, where you are limited to how fast you can go, by track configuration and driving ability.

Where the racer already has the mindset he can only go so fast.

The below screenshot, of a FB discussion indicates, there isn't any future for it, in a spec class, on the "fast" tracks that dominate the typical U.S. commercial raceway.

As far as breakout racing, has there ever been a big road course event in slot racing, where racers came in from all over the country, and World, to compete in an event with a breakout time?

If the object is have too much power, and leave it to the racer to drive sensibly, you don't need a brushless motor.

You can overpower something like a Retro car, with one of my $15 motors.