Build Thread Scratch build electric tethered car racer

[Roog]

News from my last outing with the electric tethered car, it decided to go backwards!

I have been running my Hobbywing EZRUN 4274 motor from a matched 150A ESC for about a year now and it has worked as expected, during my last run, I did nothing new, but it ran backwards instead of forwards. When pushing the trigger it ran forwards but only up to part speed.

I have checked using the configuration tool but can find no way to reverse this. Also swapping the 'stick' throw on the TX makes no difference!

Is there a master reset?

Perhaps I should try new TX batteries?

Just as a point of note, I tried the car in reverse on the track, so now we have a three wheeler with front wheel drive. The outcome? it was surprisingly stable. Perhaps I should make a Morgan three wheeler body for it?

 

[CertifiedMike]

Recenter all the trim settings and recalibrate the radio. 100% all new batteries, 100% charged!!!
There should be a process in the manual showing how to set this.
Do you have a programming card for your esc?
This might be easily fixed in your esc settings too.

 

[Roog]

Recenter all the trim settings and recalibrate the radio. 100% all new batteries, 100% charged!!!
There should be a process in the manual showing how to set this.
Do you have a programming card for your esc?
This might be easily fixed in your esc settings too.

Thanks @CertifiedMike you are right, I should look at this methodically, start from the beginning, just seemed like an odd thing to happen. I'm sure I have the instructions somewhere.

 

[WickedFog]

Thanks @CertifiedMike you are right, I should look at this methodically, start from the beginning, just seemed like an odd thing to happen. I'm sure I have the instructions somewhere.

See my reply in the other thread.

 

[LibertyMKiii]

News from my last outing with the electric tethered car, it decided to go backwards!

I have been running my Hobbywing EZRUN 4274 motor from a matched 150A ESC for about a year now and it has worked as expected, during my last run, I did nothing new, but it ran backwards instead of forwards. When pushing the trigger it ran forwards but only up to part speed.

I have checked using the configuration tool but can find no way to reverse this. Also swapping the 'stick' throw on the TX makes no difference!

Is there a master reset?

Perhaps I should try new TX batteries?

Have you resolved this yet? Sometimes you can reverse it in the ESC settings.
One easy fix is to swap 2 of the motor wires, however if it has more power in reverse than forward then you know it needs to be fixed in the ESC.

 

[Roog]

Have you resolved this yet? Sometimes you can reverse it in the ESC settings.
One easy fix is to swap 2 of the motor wires, however if it has more power in reverse than forward then you know it needs to be fixed in the ESC.

Hi @LibertyMKiii I haven't checked as yet, my track day was cancelled last month due to work load, but you know, it ran so well backwards (Front wheel drive with a single trailing wheel) that I am inclined to leave it that way!

My last runs were curtailed because I (the car) managed to shear off two 'roll pins' which engage the shaft with the driven wheels, so I have up-rated these with larger pins and piano wire inserts, I am hoping that these larger ones hold together.

I am focusing on my IC car now, which has its own issues, but I will continue to bring the electric car to the track because it is easy to run and because it is more powerful, what's not to like :0)

 

[LibertyMKiii]

Hi @LibertyMKiii I haven't checked as yet, my track day was cancelled last month due to work load, but you know, it ran so well backwards (Front wheel drive with a single trailing wheel) that I am inclined to leave it that way!

My last runs were curtailed because I (the car) managed to shear off two 'roll pins' which engage the shaft with the driven wheels, so I have up-rated these with larger pins and piano wire inserts, I am hoping that these larger ones hold together.

I am focusing on my IC car now, which has its own issues, but I will continue to bring the electric car to the track because it is easy to run and because it is more powerful, what's not to like :0)

A positive outcome of a mistake
Hopefully it does not revert back accidentally LOL

 

[Roog]

A positive outcome of a mistake
Hopefully it does not revert back accidentally LOL

Ha ha yes!

The only snag I can see is that when run backwards the ESC is right at the front making it vulnerable if it crashes, but I think I can live with the risk

 

[Roog]

I know that its been a very long time coming but I managed to get to the track today and my wife came along so I asked her to get some video of a run. Video is mostly of the grass but 'beggers can't be choosers'.

I'll get me excuses in now, the track was wet following a brief down pour so I was getting wheel spin at part throttle. reached just 64mph.

Plus a video of a start

 

[Doom!]

Been a while, glad you got to get in some track time, that thing really moves!

 

[Roog]

Ha ha , yes Like most RC cars its not great if you take one in the ankle!

 

[LibertyMKiii]

That looks much faster than 64 mph?

 

[CertifiedMike]

I know that its been a very long time coming but I managed to get to the track today and my wife came along so I asked her to get some video of a run. Video is mostly of the grass but 'beggers can't be choosers'.

I'll get me excuses in now, the track was wet following a brief down pour so I was getting wheel spin at part throttle. reached just 64mph.

Plus a video of a start

Seeing this run is just awesome!!! Fantastic job! It looks great too. The whole thing was a blast to follow along with!!!

 

[Roog]

Seeing this run is just awesome!!! Fantastic job! It looks great too. The whole thing was a blast to follow along with!!!

Next time I’ll make sure it’s running in a forward direction, difficult to legislate for the weather though. The thin tires are quite hard and lack grip compared to the fat rubber ones!

 

[CertifiedMike]

Next time I’ll make sure it’s running in a forward direction, difficult to legislate for the weather though. The skate boards wheels are quite hard and lack grip compared to the fat rubber ones!

Lol! Traction seems important! Its SO FAST!!!

 

[Roog]

Lol! Traction seems important! Its SO FAST!!!

Oops I was talking at cross purposes, the electric car has skinny 4mm wide rubber tires, it’s the IC car which runs on hard in line skate wheels

 

[Roog]

Ha! I managed to get the wheels to go the right way again!
I figured out how to reprogram the ESC parameters. (Vintage brain at work)

Next Track day is this Thursday, weather permitting.

 

[Doom!]

Ha! I managed to get the wheels to go the right way again!
I figured out how to reprogram the ESC parameters. (Vintage brain at work)

Next Track day is this Thursday, weather permitting.

YAY! You can't keep a good geezer down!

 

[Roog]

YAY! You can't keep a good geezer down!

I am expecting a massive improvement, steering tweaked, bearings oiled, and wholly unrealistic optimism engaged!
Hey its the taking part that matters, I'll settle for not breaking it :0)