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I don't have any knowledge with sprotors,Are you OK!
 

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damn that sux hope your okay
I would call exile on Monday theyre pretty good about standing behind their stuff
 

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Glad you are ok, It might be time to redesign it all. I always considered sprotors as kinda a show bike product, the downside to the design is all the heat that gets transferred into the chain when the brake is used regulary.
 

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First off....DAMN!.... i haven't seen that before.... any word back from Russell and the rest?
(were you out on 595?)
 

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from the pics you posted, it doesent look like the sprotor blew apart. it looks like something starting rubbing on the sprotor, and finally got caught in one of the holes and locked it up. can you post a good side shot of the caliper and what's left of the mounting bracket.
 

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Wow! Sucks about the part, but you are a lucky man.

There are gripes about Sprotor on other forums. I dont have any Sprotor experience, but here is a line from another chopper forum:

"" keep hearing people say that the cause/reason for exiles sprotor malfunctioning is that the sprocket is countersunk drilled for the bolts!? Some say that is the cause of the bolts reversing out of the hub and doing damage etc....?! ""
 

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I've fixed a dozen Sprotor failures. I think the problem usually is b/c the fore and aft tugging on the bolts loosens them, though your's all look tight. It could be there was a strain on the bracket b/c of the anchor. If you adjust the chain w/o loosening and double checking the shimming of the anchor, it'll stress it out.

I even GREEN loctited one once (at a cust.'s request) and it still came loose. I'll never run one myself. Failure rate is ASTRONOMICAL, while conventional brake/sprockets just plain work! No brainer, IMO!
 

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This looks very much like a sprotor bolt has backed out and done the damage.

I had the same issue, and your photo seems to show a bolt missing from the 4 o'clock position.

I can't say for yours, but mine worked just fine once I had replaced it and locktited the bolts. I do check them before each ride, as I do with most of my bolts.

FYI I have ridden my bike with the Exile sprotor in the Swiss 500 without any issues or fading. This is a 500 mile nonstop, 3pm - 3pm check pointed event (apart from petrol and drink/snack) that takes you from lakes to 6,000 ft up mountains and hairpin roads.

Is there a bolt missing from the sprotor. As mine backed out it started rubbing and wearing the 'brake rod' ie the bit connecting the sprotor to the axle. Fortunately I caught it before it did terminal damage, though I did have to replace it.

Peter
 

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I just took a look at the photos I took after I discovered mine.

Unfortunately I am abroad with just an iPad so am trying to find a way of uploading the photos so you can see where mine did the damage. It looks to me like your failed in exactly the same place as mine started to wear away and suggests a bolt backing out and causing the damage rather than a product failure.

Just my 2 cents worth based on your photos.

Peter
 

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thats looks sheared from a bolt I agree, it has a curved groove cut in it. Usually you hear some initial grinding when a bolt starts to back out. Had it happen on a v-twin sprotor, red locktited the sprocket bolts and never happened again with mucho miles and 130hp to the wheel. Its usually an assembly related problem and not the failure of the sprotors themselves.
 

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Several failures out here caused them to be Federally banned for road use. One in Victoria was traced back to the Sprotor by their Accident Investigators after a rear brake failure led to the death of the rider .
 

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I believe that using one disc as a sprocket and a rotor causes the bolts to come loose eventually, regardless of installation technique. With a conventional rotor or sprocket the bolts are pushed in one direction only. With sprotors, they get pushed one way for braking and the other way for drive through the sprocket. This is what causes EVERYONE who runs them to have them loosen up.

Now, you can double up on the loctite, chase and clean your threads, do what ever you want and all you've done is push it out further into the future, but it WILL come loose sometime. A standard rotor or sprocket can installed such that it will NEVER come loose, a sprotor cannot, IMO.
 
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