ARA330561 - Kraton 8S - Arrma forgot to thread the front upper arms! Defective replacement parts.

[atomos319]

I have seen at least one other post about the front A-arms on the Kraton 8s with same issue. I went to replace one of the front upper A-arms and found the replacement part to be unthreaded on the inside. This makes it impossible to screw the pivot screw into the upper arm unless you are willing to try your luck tapping your own threads! I am guessing that they are not intending for people to have to do that. I have contacted Horizon but as I wait on a response, I am wondering if anyone has gotten replacement upper arms that were threaded? Or they all defective?

Picture attached. Old, threaded arm is on the left; new arm missing threading is on the right.

 

[jondilly1974]

We are talking about plastic right? Is it that hard to drive the pillow ball into plastic? You could always tap it enough to get it started and then muscle the rest in.

 

[atomos319]

We are talking about plastic right? Is it that hard to drive the pillow ball into plastic? You could always tap it enough to get it started and then muscle the rest in.

I tried and tried, I cannot get it to go. I can get it started and then it just pops out.

But that is not the point. Is the part meant to be like this? I doubt it and think there is a defective batch floating around out there. I want to know if anyone has gotten arms that are in fact threaded.

 

[3d-rc.myshopify.com]

I would honestly prefer it to not be threaded. Imo it would be a tighter fit for it.

 

[Megasty]

I replaced 2 of them, They both were unthreaded. I simply started screwing in the pillow ball by hand then 12v impacted the rest, 10 seconds, done.

 

[Mr.Duke]

Replacements don’t come threaded. The only time they do is when you buy them from a chop shop that took them off an already assembled unit.

 

[atomos319]

Eh, I bought a tap and took care of it that way. Seems odd to have them unthreaded - the average beginner hobbyist would likely be discouraged from trying the repair on their own. Aren't the 6s arms threaded?

 

[jondilly1974]

Eh, I bought a tap and took care of it that way. Seems odd to have them unthreaded - the average beginner hobbyist would likely be discouraged from trying the repair on their own. Aren't the 6s arms threaded?

No they aren’t.

 

[Jimbobjr]

Tapping those removes material. Best to carefully thread them in by hand in the untapped hole for a snug fit. There's around 30 threads complaining of pillow balls coming loose on the 6s models. I'm sure there will be plenty to come on 8s. One nice thing is the aluminum collar. Keeps them from expanding and cracking.

 

[tschenck]

Eh, I bought a tap and took care of it that way. Seems odd to have them unthreaded - the average beginner hobbyist would likely be discouraged from trying the repair on their own. Aren't the 6s arms threaded?

This truck is not made for the average beginner hobbyist.
Oddly same problem in the x-maxx community. A lot of people bought them as their first rc car.

 

[Megasty]

This truck is not made for the average beginner hobbyist.
Oddly same problem in the x-maxx community. A lot of people bought them as their first rc car.

I was just talking to a friend today about the Kraton. He's always been a gasser. But seeing me rip around in that Kraton has him aching to get one. He was thinking about the X-Maxx but was completely turned off by all the problems I was having. He has a very slow stock 5t with a worn out drivetrain that would probably cost as much as the Kraton to rebuild & convert over to electric. It would still be his 1st electric car. I wouldn't even think of giving him any advice about if he didn't have that ancient truck.

 

[Jerry-rigged]

Plastic parts are never threaded out of the mold. When you screw them in the first time, they cut their own threads.

 

[Captain Dirt]

If you do use a tap, only cut enough threads to start threading the pivot ball, then let the threads on the ball cut the rest of the threads in the plastic.

 

[slick2500]

Eh, I bought a tap and took care of it that way. Seems odd to have them unthreaded - the average beginner hobbyist would likely be discouraged from trying the repair on their own. Aren't the 6s arms threaded?

I am almost positive none of the plastic parts come pre threaded.

 

[eom]

hi bro.

You have to work on your own.

That's the same with other companies's.

 

[Surchaufeur]

I tried and tried, I cannot get it to go. I can get it started and then it just pops out.

But that is not the point. Is the part meant to be like this? I doubt it and think there is a defective batch floating around out there. I want to know if anyone has gotten arms that are in fact threaded.

You have to put a not of pressure i recently remplaced a few rod ends on my kraton 4s and omg i had to put a crap ton of pressure to start threading on