since decatting and flashing my bike it doesn't get hot enough to turn the fans on! When I found my radiator was busted I was nearly 2 states away and I rode home dry with the oil temp never exceeding 208.
Just had a leak as well 2015 1290 R.After four and a half years at 20,000ks my radiator has sprung a leak. I know it is a problem with the superduke but was hoping that mine was good; however, that was not to be. I don't know yet how much for a KTM replacement is but I guess it will not be cheap. I am also in two minds if I want another KTM radiator because I don't think the latest ones are any better. Is there anyone out there that has bought and tried one of the aluminium radiators for China, they are well priced but I am not sure about the fitment.
What I did to solve this issue I elongated the holes in the tank shrouds where they bolt to the radiator. Then I found some of those rubber grommets that have the small steel tube in them that stop the nuts from crushing the grommets to tightly. I put the steel tube on the bolts that screw the tank shrouds to the radiator with big washers to allow the shrouds to move up and down with the tank movement without putting strain on the radiator.I got around to the common Superduke R radiator problem. For clarification, watch this vid
In short, the fact that the tank can move up and down on its front supports, transmits force towards the radiator mountings through the side fairings. And this rips the veins apart and causes leaking. Or complete failure.
I was looking for a simple, effective and most importantly a home made fix to eliminating the free play. Mission : Secure the tank is a go.
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This is the support I was talking about, and the mechanic points out in the vid. The C-section that encircles this mount is not a complete circle, and therefor only supports the tank up-to-down. That's where it needs some extra padding.
(Ignore the grey wire, that's a USB cable I pulled to a phone mount)
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I was thinking, it just needs thick tape. Something flexible that can handle weight without compressing too much, and something sturdy that will stay on. The roll on the left is what you apply to window sills to keep wind out, and the right is for waterproofing.
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So I played around with a few measurements and basically, it came down to a layer of the wind stuff. I put the tank back on and there was absolutely zero movement left. I will keep a close eye on it after the next few rides.
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This isn't the prettiest solution, but from what I can tell, this does work. The next month or two, if it's still as sturdy as it is now, I'm going to replace it with black tape. It should be a near enough invisible fix. Hopefully, it saves the radiator from failing. A $10 fix to a common problem? Hell yeah!
If you want to see how much movement there is on yours, do the following. Pull the side fairings off and remove the two bolts at the crotch area of the tank. Grab the front of the tank near the ends and wiggle it up and down. Close that gap via A) the mount, or B) on the tank insert itself. Should be easy.