Rear Axle Nut Issue

[Sloppy McFloppy]

Hello!

I recently replaced front and rear sprocket along with the chain. Afterwards, I took it immediately to my local mechanic to have it double checked. Everything was okayed and on my way home the rear axle nut came off! My bike and I made it home safely after my roommate lent me his rc390's rear axle nut. I made sure to do everything correctly and torqued to spec. The very next day, halfway through a group ride the same issue happened. The great people I was riding with helped me get a temporary fix to arrive home.

My question is did anyone else experience this? Any suggestions? Did I mess up?

I'm currently replacing the entire rear axle because I don't trust it anymore.

 

[KTMLaos]

The only thing I can think of is that you've missed a spacer.

 

[Sloppy McFloppy]

The spacer between the chain adjuster block and the rear axle nut? It was there for both rides. Appreciate the input as this has made me doubt riding anytime soon.

I also had a follow up question for anyone reading this. Due to my paranoia, I am considering drilling a hole into the rear axle, near the nut to secure a safety wire to it. Will this compromise any individual part?

 

[KTMLaos]

This never happens that I know, or have read about.
You'll better off finding the cause rather than preventing the nut from coming off the axle.
There are several spacers for the wheel plus a spacer at the sprocket carrier.
Have a look at ktmsparepartsfinder.com to get an understanding of what needs to be where.

 

[Sloppy McFloppy]

That was just to get home. I ended up ordering a rear axle and everything that comes with it and replaced mine. I stopped by my ktm dealership to get their opinion on it. They said since I replaced it I should be fine. They gave me some blue loctite and said they've never heard of this before. I don't know anymore lol. I've slowly got back into riding and building my confidence. So far so good, hopefully, I can put this worry behind me.

 

[KTMLaos]

So nothing was missing or out of place? Weird.

That was just to get home. I ended up ordering a rear axle and everything that comes with it and replaced mine. I stopped by my ktm dealership to get their opinion on it. They said since I replaced it I should be fine. They gave me some blue loctite and said they've never heard of this before. I don't know anymore lol. I've slowly got back into riding and building my confidence. So far so good, hopefully, I can put this worry behind me.