Ktm hub?

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9/11/2019 3:59 PM

Anyone have any recommendations for replacement hub? Just hit 20 hours on the bike, 7 hours on sprocket, and checked the bolts prior to this ride. 4 laps in ended up with this.

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9/11/2019 4:09 PM

Nasty, I hope it hasnt damaged/warped the brake disc as well

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Current rides: 2019 CRF450RWE and 2019 TC300
Occasional ride for VMX: 1985 CR500RF
Adventure/Road bike: CRF1000L

9/11/2019 4:21 PM

Faster, Haan, Talon if you got the $$. I've been really happy with my tusk wheelset that was very affordable.

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9/11/2019 4:32 PM

fluxracing223 wrote:

Anyone have any recommendations for replacement hub? Just hit 20 hours on the bike, 7 hours on sprocket, and checked the bolts prior to this ride. 4 laps in ended up with this.

How many torques did you put on the bolts???




Sorry to see the ride ruined by it. I’ve always had good luck with stock hubs. Would be looking at Faster or Haan if it was mine.

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9/11/2019 4:59 PM

Faster USA just released a new complete wheel- $675 w/ free shipping

https://www.instagram.com/p/B2R_J7Fgyjv/?igshid=1qy772tm52u9i

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9/11/2019 6:09 PM

How tight was the chain?

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9/11/2019 6:57 PM

T-Fish wrote:

How tight was the chain?

This this this x 1000. Easy test look at factory bike pics, chains are loose looking always always always

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when in doubt, pin it out

9/11/2019 7:13 PM

I have had my chain tighten up while I was riding. Started off with a perfect adjustment (3-finger rule)
Then later after a couple motos, the chain was EXTREMELY tight when I went to lube the chain.

Turns out the dirt must’ve had a bunch of lime or something that caused it to build up on the sprocket teeth enough to take up the slack on the chain.
I took a razor knife and “carved” off the crap that was stuck to the valley of the teeth and the chain was back to normal. Helped a couple others out that day who were trying to figure out WTF was going on with their chains. It wasn’t even very muddy, it was actually a sandy track.

May or may not pertain to this situation, but it’s something to keep an eye on, if you encounter your chain being ‘all of sudden’ tight....

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9/11/2019 7:17 PM

We are riding at Hollister, I tell my buddy damn ur chain is too tight. No no it's right where manual says. I say ok check out pics of factory bikes they are loose. Not twenty minutes later we are side by side down hill through some rollers, boom his hub breaks. Tried to tell him but u know how that goes

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when in doubt, pin it out

9/11/2019 7:34 PM
Edited Date/Time: 9/11/2019 7:35 PM

Given the title I was expecting this thread would be filled with slutty KTMs.

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GP740
Since 1987

9/11/2019 8:12 PM

T-Fish wrote:

How tight was the chain?

gsxr6 wrote:

This this this x 1000. Easy test look at factory bike pics, chains are loose looking always always always

KTMs (and Huskies) require more slack in the chain than other bikes. The manual
recommends 55-58mm of play measuring right behind the top of the chain block on the swingarm.

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9/12/2019 5:26 AM

There was plenty of slack, I’ve never had this issue in 20 years.

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9/12/2019 5:48 AM

A hub blowing up with only 20 hours on the bike id be making KTM replace it.

Assuming youre 100% sure its not user error....

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9/12/2019 6:01 AM

Just to make sure, when people say they torque the bolts, i hope you actually mean torquing the nuts on the back side of the sprocket? Any time i replace a sprocket i replace with a new nut and bolts set as the new nuts come with loctite on them. If you torque the bolts while holding the nut stationary, you're going to have problems. You need to hold the bold still and tighten the nut with a closed spanner to mate them together correctly.

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9/12/2019 6:02 AM

Where are the 4 other bolts? Assuming the flange in the chain slider is the same way.

Kinda strange they all sheared off, one actually stretched and turned the only sprocket piece left around the lip.

Obviously one went with the hub flange.

So do you believe that 4 bolts sheared off at one time or did they come loose?

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9/12/2019 6:17 AM

I know 2 people that have had the rotor side on the back rim break the hub..

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9/12/2019 6:32 AM

Has anyone here tested the MooseRacing hubs?
They'r supposed to fit with stock spokes.

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9/12/2019 6:49 AM

kb228 wrote:

A hub blowing up with only 20 hours on the bike id be making KTM replace it.

Assuming youre 100% sure its not user error....

Yeah, that'll happen

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9/12/2019 11:56 AM

Quality parts

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9/12/2019 12:32 PM

Markee wrote:

Where are the 4 other bolts? Assuming the flange in the chain slider is the same way.

Kinda strange they all sheared off, one actually stretched and turned the only sprocket piece left around the lip.

Obviously one went with the hub flange.

So do you believe that 4 bolts sheared off at one time or did they come loose?

What I was wondering.

It's strange. I can't see 4 bolts shearing, and 4 just falling out seems unlikely as well.

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Go for it! Don't let a little thing like fear, or common sense hold you back.

9/12/2019 12:46 PM

fluxracing223 wrote:

Anyone have any recommendations for replacement hub? Just hit 20 hours on the bike, 7 hours on sprocket, and checked the bolts prior to this ride. 4 laps in ended up with this.

This is payback for not removing the Pittsburgh sticker from the stand.

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9/12/2019 1:59 PM

GeorgiePorgie wrote:

Given the title I was expecting this thread would be filled with slutty KTMs.

Haha. Bunch of 2 strokes with spooge coming out the tailpipes? If that's your thing.

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9/13/2019 10:24 PM

Excracingteam.com wrote:

Has anyone here tested the MooseRacing hubs?
They'r supposed to fit with stock spokes.

I believe the Faster USA hubs work with the OEM spokes, but I don’t know why you’d want to reuse them. The stock spokes stretch ...,

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9/13/2019 10:40 PM

fluxracing223 wrote:

There was plenty of slack, I’ve never had this issue in 20 years.

I have seen this happen often on KTM's - Mainly PDS and chain length problem - old KTM hubs where very bad ( bearing as well and issue) had to replace them from new with Talon - Newer hubs look better (bigger bearings) but are they ???

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9/14/2019 1:08 PM

Excracingteam.com wrote:

Has anyone here tested the MooseRacing hubs?
They'r supposed to fit with stock spokes.

I have them on my bike and they are great. And like you said it all interchanges with stock.

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9/14/2019 6:59 PM

Hubs don't " just break".

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9/14/2019 7:58 PM

Markee wrote:

Where are the 4 other bolts? Assuming the flange in the chain slider is the same way.

Kinda strange they all sheared off, one actually stretched and turned the only sprocket piece left around the lip.

Obviously one went with the hub flange.

So do you believe that 4 bolts sheared off at one time or did they come loose?

SEEMEFIRST wrote:

What I was wondering.

It's strange. I can't see 4 bolts shearing, and 4 just falling out seems unlikely as well.

Entirely possible he took those out before taking the photo, but there's no way they all sheared off.
Most likely they were not tight enough, or there was some other issue with the hardware.

The advice above about torquing the nut, not the bolt-head is a "must-situation"...

Do the YZ bolts have the same taper angle as a KTM sprocket? Those YZ bolts and nuts are very good and if the bolts don't work, use the YZ locking nuts with some KTM bolts and blue loc-tite.

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9/14/2019 9:56 PM

How would one actually get a socket with torque wrench on the nut between the hub and spokes... asking for a friend.

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Never try to argue with idiots; they will only bring you down to their level.....and being more experienced, they will beat you at their own game!


2006 KX250

9/14/2019 10:02 PM

If you are missing half of bolts this will happen in every brand.

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9/14/2019 10:17 PM

bvm111 wrote:

How would one actually get a socket with torque wrench on the nut between the hub and spokes... asking for a friend.

You already know the answer to that....

It’s physically impossible to get a socket on them, let alone a torque wrench. I can’t even get an open end wrench on most of my bikes.
“Torque your sprocket bolts” ~ #FAKENEWS

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