Scary brake failure reports.

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deforj
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Scary brake failure reports.

Post by deforj » Tue Jun 20, 2017 6:34 pm

Hi,

New to this forum, very happy I found it. A week ago I bought a 2013 990SMT with just 15 000K on the clock. The bike is an absolute blast, I absolutely love it. I've always wanted a KTM and this model in particular. So anyways, I took it to work this morning in the rain. I think I heard the brakes drag on the way in so I started googling about it. I found some very scary stories about the front brakes seizing and causing crashes. Should I be worried ? Any experience with this?

Thanks in advance.

deforj
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Re: Scary brake failure reports.

Post by deforj » Tue Jun 20, 2017 9:51 pm

here are some of the stories I found when googling about it:

http://www.motorcyclenews.com/news/2017 ... e-failure/


on this forum also:

viewtopic.php?f=3&t=5551&start=20

Does anyone know if the problem is still there on the 2013 model?

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jhalfhide
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Re: Scary brake failure reports.

Post by jhalfhide » Tue Jun 20, 2017 10:07 pm

It's basically poor maintenance. Keep your brakes clean and your bobbins free. I've a 2013 SMT (great choice by the way) and have also owned a 2010 SMR. Both bikes have never had any issues with brakes and I don't exactly clean it after every ride (more like once a month if that).

I do plenty of miles too, and in all weathers.

My mate has a 2012 SMT too and has had no issues.

There are a few issues I've heard about but, the brakes aren't exactly only on KTM's. They're Brembo brakes and shouldn't really be any different to any other Brembo installs of the same system on other bikes.


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Re: Scary brake failure reports.

Post by jhalfhide » Tue Jun 20, 2017 10:09 pm

Oh and if the brakes were dragging, free up the disc bobbins. I had to do mine a few weeks ago for the same slight groan from some drag. It's the same you get on any bike with floating discs


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Now: 2013 KTM 990 SMT
Old: 2010 Ducati Faultistrada 1200s (Broke)
Old: 2007 Yamaha R1 (Sold)
Old: 2009 KTM 990 SMR (Stolen)
Old: 2008 Ducati 848 (Written off... whilst parked :roll: )
Old: 2007 ZX6R (Written off... elderly driver)
Old: 1996 ZX6R (Sold)

deforj
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Re: Scary brake failure reports.

Post by deforj » Tue Jun 20, 2017 10:35 pm

Thank you mate.

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Winterwolf
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Re: Scary brake failure reports.

Post by Winterwolf » Wed Jun 21, 2017 11:14 pm

What's the best way to clean up the bobbins?... Will check mine at the weekend as I've been riding in some right shite this year

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Re: Scary brake failure reports.

Post by jhalfhide » Thu Jun 22, 2017 5:46 am

Winterwolf wrote:What's the best way to clean up the bobbins?... Will check mine at the weekend as I've been riding in some right shite this year

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Bolt and nut method is best. https://youtu.be/SM7QKyHUR9E


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Now: 2013 KTM 990 SMT
Old: 2010 Ducati Faultistrada 1200s (Broke)
Old: 2007 Yamaha R1 (Sold)
Old: 2009 KTM 990 SMR (Stolen)
Old: 2008 Ducati 848 (Written off... whilst parked :roll: )
Old: 2007 ZX6R (Written off... elderly driver)
Old: 1996 ZX6R (Sold)

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Re: Scary brake failure reports.

Post by Winterwolf » Thu Jun 22, 2017 8:08 am

Cheers mate.. Will sort that at the weekend

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Re: Scary brake failure reports.

Post by Thirdway » Sat Jul 01, 2017 5:39 pm

jhalfhide wrote:Oh and if the brakes were dragging, free up the disc bobbins. I had to do mine a few weeks ago for the same slight groan from some drag. It's the same you get on any bike with floating discs


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I think this is a myth. Many of us spent hours of time freeing up our bobbins, the result is an increasingly worn disc mount-our discs aren't fully floating, the bobbins allow for some thermal expansion. unlike race discs which are designed to be virtually fiction free, semi-floating designs do drag somewhat, the payoff is that we can ride thousands of miles without fear of the bobbins wearing away.

If the brake drag is bad, then it means one of several things.

1. Sticking Pistons.
2. Bad brake fluid
3. Overfilled reservoir
4. Faulty master cylinder
5. Mis-aligned calipers through not following tightening sequence.
6. Hollow scalloping of rotor through pads remaining in contact with the rotor causing heat/wear spots.

Brembo are pretty naff when it comes to the stuff fitted to bikes. If I had half a chance I would ditch them and get Nissin. They are far hardier, more reliable and have better modulation.

I've had 4 bikes with Brembo set ups and all of them succumbed to scalloping of the rotor. Freeing off the bobbins provides some temporary relief, but doesn't cure the problem. Unfortunately Brembo brakes need lots of TLC. At least once a year they must be fully stripped and cleaned. Any damage to the Pistons at all means a good likelihood that most of them have some damage to the surface finish-best just replace all Pistons and seals.

Unfortunately, if the bike has been used for a while with the pads failing to retract, then the rotor is likely junk-the brake will be pulsing. There isn't much point in doing all the work on the calipers because the rotor will still pulse, so it's time for rotor replacement.

Bloody Brembo crap. I have never had a single issue with jap brakes. Funnily enough my local,car mechanic who races cars has the same opinion of the Brembo car brakes, they are good when they work, but go bad quickly.

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