SCX10 Pro axle tube ( should there be 2 holes?)

[ferrebee88]

The print could be wrong and holes correct. Two mounting positions allows you to clock the c hubs for optimal performance. It's often referred to a King Pin Inclination. I'm assuming this is the front axle.

To have adjustable king pin inclination, you can either mod the axle housing or the C hub. Vanquish mods the c hub as you can see here:

https://vanquishproducts.com/products/axial-wraith-xr10-c-hubs

If your replacement parts have this same two-hole thing, then it's for that. It would be odd to replicate the error on both sides. If not, then something did get goofed up. Rarely are RC company prints 100% accurate.

While it could be a machining error, the threads look to be true to the hole, so it doesn't strike me as an error. Could be though. Programming these machines is rather easy now. Solidcam makes short work of it. We have 5 3-axis cnc lathes with bar feeders. My engineers will fuss about all the blood, sweat, and tears on the programming, but we've dropped in new machining programs and had proof parts 10 minutes later. I think they just like giving me a hard time.

I will find out tomorrow when I get the new set in the mail. When I sent the email I included pictures and asked if it was supposed to be that way. They said no and sent me a new set. We shall see!

 

[MVRCA]

Oh, this will be interesting as to what shows up. Have you tried to install the c hubs clocked? Do the screws even line up from side to side?

 

[ferrebee88]

Oh, this will be interesting as to what shows up. Have you tried to install the c hubs clocked? Do the screws even line up from side to side?

They do line up, but the angles of the tie rod are pretty drastic. I'll post some pics a little later today.

 

[MVRCA]

Hmmmm.... The plot thickens. The more I look at it, the more I'm wondering what is actually going on with those parts.

 

[MVRCA]

Before I type out the pros and cons to king pin inclination, let's see what the new parts look like. There are two camps of thought on this one, and good drivers in each camp. That's all if this is an intentional thing. I'll skip this talk if they some how goofed up multiple parts with the same clocking of an extra hole.

In this video, it looks like there is only one hole in his axle housing.

Around the 4 min mark

 

[MVRCA]

Same here, just one hole ( 2 minute mark )

 

[ferrebee88]

That's funny... I watched those same build videos to see if there were multiple holes before I posted.

 

[MVRCA]

It's really interesting is so many ways. It appears that the 1-hole variant does already incorporate some amount of inclination, at lease that's how it looks in the video. Looking at your 2-hole axle, if intentional ( which it's appearing not to be the case ), it would allow for some adjustment. Might be a terrible adjustment, but adjustment none the less.

What I don't understand is how both sides match. Two different parts. In manufacturing, it would be really odd to have a programming error on two different parts, on two different production runs. Possible, yes, but really weird.

A 2-hole part could have been something tried and discarded during development, thus the existence of the program and possibility of making the parts. It's just so strange that you got both 2-hole parts, and that they line up.

I've been digging around to see if there are any 2-hole axles for this crawler, and I've found nothing.

Weird.

 

[ferrebee88]

Kind of hard to get good pictures to represent...

 

[WickedFog]

I agree. If it is a machining error, it wouldn't be on both sides. If it is a machining error on both sides, it would be very unlikely the holes would be in line from one side to the other.

 

[MVRCA]

So strange. The second photo with the knuckles tilted back and the drag link elevated is most likely their intended setup. That second hole is a odd one. I wonder if they had a goof up, ran a batch, then realized the machining program is wrong. Most probably got tossed, but maybe a few got through the system and packed up.

 

[ferrebee88]

I'm still waiting on the replacement. Amain overnighted them with UPS and I was supposed to get them yesterday. UPS tracking shows that they got delayed somewhere. Looks like I'm waiting til Monday.

 

[ferrebee88]

Finally! I no longer have to be confused on which hole to put it in.

I got the replacement axle tubes today. Turns out one set of the holes in the defective axles were correct. I have no clue how they both got an extra set of holes, but I feel much better now.