Wheels doing something weird

[bramaboy]

Can’t attach videos, but it is linked. Wheels shuttling left to right mostly at low speeds. They are all the way on. Would love some help or thoughts comments concerns questions etc
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Car Wheels Something

 

[olds97_lss]

Looks like your servo is moving... what radio do you have?

 

[bramaboy]

2015 b.e.c. Traxxas receiver

 

[bramaboy]

2015 b.e.c. Traxxas receiverView attachment 126679

The servo is stock by the way. Hpi sf.1

 

[cbaker65]

I would buy a new radio set up ,change it to the 2.4 version!
That old am radio catches too much interference ,the antenna doesn't
look too good!

 

[Greywolf74]

I agree, I would upgrade to a 2.4Ghz radio first and see if that solves the problem. You'll like the range and features better than an AM TX/RX anyway even if its just a budget radio like the Flysky GT3b or GT3c.

If the radio doesn't fix it then the servo would be my next suspect

 

[bramaboy]

Alright, I will probably do that. On a different note, I'm having arguably bigger problems with it. Here's the reddit post. The video was longer than a minute so I couldn't put it on Imgur.

https://www.reddit.com/r/rccars/comments/n11ibl

 

[tntpoof]

I'm almost sure all of your issues will go away with a new 2.4dhz radio .. do you have underground power lines? that was a major bleep with AM radio gear

 

[bramaboy]

I'm almost sure all of your issues will go away with a new 2.4dhz radio .. do you have underground power lines? that was a major bleep with AM radio gear

They definitely won't. But no we don't have underground power lines

 

[Greywolf74]

After seeing that video my money is on a bad servo. Its like its not able to hold center and you mention in the video that it doesn't have enough power to turn the wheels properly. That suggests bad servo also.

 

[bramaboy]

I think I meant that when the wheels were turned at a standstill and I tried to accelerate without turning back center, the motor would not do it. It would act like I’m holding it in place and not letting the wheels move.

 

[LibertyMKiii]

You could also disconnect the link to the servo and move the front wheels to make sure it is not binding somewhere.
I had one car that was sensitive to how tight the screws are on the steering. If the steering moves nice and easy it may just be the servo. They don't last forever. Amazon has some good ones for low cost.

The red DS3225 is a favorite for the 1/8 scale Arrma cars. I am not sure if it would fit your car.

 

[bramaboy]

You could also disconnect the link to the servo and move the front wheels to make sure it is not binding somewhere.
I had one car that was sensitive to how tight the screws are on the steering. If the steering moves nice and easy it may just be the servo. They don't last forever. Amazon has some good ones for low cost.

The red DS3225 is a favorite for the 1/8 scale Arrma cars. I am not sure if it would fit your car.

We have some extra servos so I will swap one out and see what it does.

 

[bramaboy]

Here's an update, it explains both problems that I've been having.

https://www.reddit.com/r/rccars/comments/n1fuvy

 

[bramaboy]

There has been another update, find it in the comments of the post above

 

[cbaker65]

There has been another update, find it in the comments of the post above

Make sure that the drive axles are not trying to pop out of the cups on the diffs ,
to try an cure that , you can put washer on the stub axles before they go into the
hub ,or make sure that your ride height is not too high on the suspension ,also
make sure that the wheel bearings are the proper fit for the stub or wheel axle
an not sloppy ,the bearings should fit tight over the axle!...

 

[bramaboy]

Make sure that the drive axles are not trying to pop out of the cups on the diffs ,
to try an cure that , you can put washer on the stub axles before they go into the
hub ,or make sure that your ride height is not too high on the suspension ,also
make sure that the wheel bearings are the proper fit for the stub or wheel axle
an not sloppy ,the bearings should fit tight over the axle!...

My height is the lowest I can set it to. If you check out update I think 2 maybe 3, the wheel axle disconnected from the cup. They definitely are not popping out at the differential, just at the wheel

 

[cbaker65]

My height is the lowest I can set it to. If you check out update I think 2 maybe 3, the wheel axle disconnected from the cup. They definitely are not popping out at the differential, just at the wheel

I think if it is a dog bone style axle rather than a cv joint style ,people use to remedy that by putting a little
tiny o-ring inside of the cups at the diff output cups ,that keeps the dog bone style axle from wanting to
pop out!
I just had this problem on my mantis truggy ,but it was the shock travel!

 

[bramaboy]

Ok, hear me out. Is it possible to possibly replace the dogbone system with a system like this? If I possibly found all the right parts and measurements and possibly had a 3d printer that I could possibly use to do some possible things

 

[cbaker65]

Ok, hear me out. Is it possible to possibly replace the dogbone system with a system like this? If I possibly found all the right parts and measurements and possibly had a 3d printer that I could possibly use to do some possible things

Those are center drive shafts ,but you might be able to use the stock Traxxas axles ,which are tellascoptic style!

https://www.ebay.com/itm/3841151866...umrpoVMyxl48joMok%3D|ampid:PL_CLK|clp:2047675