18 replies to this topic

[Mr. M]

What is the experience putting a circuit board through racing conditions? This is not a dig or negative tract. I want to know what the practical experience is. These cars take high g hits and can bend axles, knock out motors. An ESC is a small electronic circuit board out in the open. So what is the experience with this?

[stoo23]

Hi Chris, I'm not specifically aware of anyone reporting or having any serious issues with the ESC's during racing but obviously it would depend on one's mounting methods etc.

 

This could also be due to the perhaps relatively clean racing many of the current batch of users are involved in

 

Crash Fest 'Wing Car' racing may provide for a different outcome LOL

 

The ESC's Are small and relatively Light Weight, so Not a Lot of Mass to want to 'keep moving' as it were

[Bags]

Hi Chris 

We have been testing a wing car in a breakout race program at P1 in Florida.

 

My friend Martin races weekly there in that race with a brushless powered car with no problems.

 

He has bent up a couple chassis and didn’t hurt the esc or motor. 
 

[Shorthose]

I have a pretty good familiarity with line of sight racing drones and can tell you that an ESC will take as much if not more during a life of a drone , they service 4 motors and take a ton of abuse and IMO we will never see that kind of abuse in a slot car , I have never had 1 failure from an esc from getting " banged up " or broken loose from  a drone falling from the sky and or hitting the ground and rolling up into a ball at 75MPH , I for one look forward to the " new technologies "  that we are going to see in the near future , no more hot motors and a more consistent usable power and just a cleaner race car  , Look at what John Gorski has put together for a " retro" car is just a beautiful piece 

[gotboostedvr6]

I drove Gorskys car last night on the 23 isra worlds track. Its very very fast and easy to drive

[Bill Seitz]

Where I would expect a vulnerability with the ESC is with thermal dissipation. I observed a note in the specs of a popular brand ESC that states the ESC must be kept in an airflow of a certain rate. This is readily available in a drone prop/rotor-wash, but could be a challenge in a slot car. It does help that slot car race heats are relatively short, and cars are typically forced air cooled between heats. I also observed in recent brushless testing in Europe that the report noted several burned motors and ESC's, although the European users are racing on much higher voltages than are typical on US raceway tracks. The voltages being used were even higher than most drag strips.

 

I think how well the brushless technology survives is going to be similar to what we've experienced with brushed motors. Currently there doesn't seem to be a lot of pressure to push the technology performance envelope as years of hard competition has done with brushed motors. As the brushless technology is pushed to achieve ever increasing performance and power to weight ratio, the same sort of reliability issues experienced with brushed motors will gradually appear. Reliability depends on exercising sensible limits which rarely happens in competition unless somehow required by the regulating organizations.

[Bags]

Bill I don’t think heat is going to be a problem with properly setup cars.

 

In this video the same car was used across all the lanes and put all the laps on the board.

 

The car was moved from lane to lane with no cooling off between lane changes.

 

The components stayed cool to the touch after all those laps.

 

https://youtu.be/d77...3hzX3LAFDfRzMVg

[stoo23]

Yeah, I agree, we recently ran over 200 laps with one of the UK SB Ecom's and an EMAX 6000kv motor and neither the ESC or Motor were even warmer than Ambient temperature.

 

Had anyone been asked for a 'finger test' of the motor Temp, you probably could have assumed it had Not even been Run.

This was ofcourse, at Sensible, Normal Slot Car type Voltage

[Bags]

This is a leftover parts junkyard dog thrown together wing with a 1108 6000kv motor DoSlot powered.

 

The motor and esc were cool to the touch it’s geared 13x33 64p

 

All the laps on the board by this car on 8/29/23 on P1’s Hillclimb in Florida.

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[gatormark]

Pics of motor mounts please

[Eddie Fleming]

My questions are not about durability, but about drivability in something other than a wing car or a drag car. 

[Mr. M]

How is the ESC mounted?

[Marcus P1 Raceway]

My questions are not about durability, but about drivability in something other than a wing car or a drag car. 

Eddie, I can tell you that I run my Mossetti GTP brushless car 4500kv the same way I run my GTP with the Raptor motor.
Both have the same gear ratio 14/32 and I also use the same brake setting on the controller.

[stoo23]

I agree in fact in some ways the driving of the car is nicer, the Power and Torque delivery is ever so slightly different.

 

Plus in a Wing Car, if you thought they handled well before, wait till you have virtually NO weight at all in the Rear of the car !!!

 

[Bags]

Pics of motor mounts please

https://kcracing.net/New-Arrivals/

[Bags]

How is the ESC mounted?

Scotch double sided mounting gel tape. 

[Bags]

My questions are not about durability, but about drivability in something other than a wing car or a drag car. 

This runs good Eddie.

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[Marcus P1 Raceway]

This runs good Eddie.

Looks familiar!🤔😁

[Bags]

Looks familiar!

It should! Nice clean look!