Posts
140
Joined
1/31/2018
Location
Rock Creek, OH
US
Edited Date/Time
4/17/2018 4:01pm
I am replacing my bar mounts on my bike due to that they are bent. I don’t want the stock ones they don’t seem to be very strong seeing as they bent from a tip over in a corner, any good aftermarket recommendations??
http://www.flyracing.com/product/moto/hard-parts/bar-mount-kits/ktmhusq…
The Shop
Luxon MX Bar Mounts
I think I'm going to go the Fastway mount tho,it looks tough as.
When things twist from a tip over with a standard mount, everything contributes to twisting. The rubber cones allow movement (as they should) and the whole assembly twists through the bolted interface with the bars on a long lever arm. This is why a solid top mount is not ideal - it allows that long stack up of parts to twist. With a (strong enough) solid lower mount, the only portion that can twist is the bolted interface at the bars so it is much more resistant to twisting. This is why we went with a solid lower, not a solid upper. You can always go with both as solid, but it's a bit overkill. A solid lower also makes it much easier to install as both mounts are already aligned when you tighten everything down.
We've done a lot of analysis and testing of different bar mount designs to arrive at the design we have now. The biggest issue with the Fastway and the Fly mounts linked here is that they're just a rectangular box structure. That's about as weak as it gets when it comes to structural shapes! Our design is indeed a box structure, but adds a truss-like support under the bars resulting in a much stiffer/stronger structure. Here's a finite element comparison to 2016 stock, ours is nearly 7x stronger. Pink/grey areas in the plots are failure spots (high stress, e.g. bent/twisted):
We've actually reduced the strength slightly since that analysis was run as the goal was to arrive at a design that is strong enough to not twist under normal use and tip-overs, but will bend in a major crash. And by major crash, I mean something that's ending your day, not something that you can pick the bike up and keep riding. In that event, something has to give. If you're going to sacrifice something, it's much cheaper to replace one part of the bar mounts than a triple clamp or forks!
The Ride engineering mount isn't bad, but they're using a solid upper mount rather than a solid lower as I mentioned above. They're using 4 M6 bolts rather than the 2 M8 bolts most use, which will help reduce twisting slightly that gives ~10% more clamping force on the bars. But now you have twice as many bolts to tighten for only a 10% increase that would have come much easier with a solid lower mount.
Regardless, whichever one you choose is almost certainly going to be better than stock!
We did some back to back testing with our mount design (rubber mounted same as stock, just different mounts), the Xtrig mounts, and solid mounts. The rider feedback and vibration data didn't really show any clear advantage to the Xtrig, plus the Xtrig mounts are twice the weight of our design. One thing to note is that while the Xtrig mounts have large elastomers which allow good movement under impact, vibration damping and movement in other directions is rather limited by tiny rubber cones internally. Here's a cross section compared to stock style mounts (the small rubber cones I mention are red, under the green piece):
Being the the rubber is much closer to the bars on the Xtrig, it takes a lot more of it to get the same movement as the stock mounts with the rubber further away. Not trying to bash the Xtrig stuff as they're good mounts, but we found the stock style offers the same performance at half the weight, so we stuck with that for our products.
I use these.
Pit Row
Then you'll have the aluminum stud still in the clamps with the rubber cones around it. It will likely be stuck there and not fall out too easily. Thread the bar mount bolt (that you just removed) in to the stud a few turns and push down on it while you turn the stud back and forth with a wrench. It should work its way out doing that.
Then install our mounts the same as stock, but use anti-seize on the titanium bolts and the correct torque. Instructions are here:
https://www.luxonmx.com/product-luxon-ktm-husqvarna-bar-mounts.html
(scroll to the bottom of the description for pdf link)
https://www.luxonmx.com/blog-luxon-bar-mount-fix-ktm-husqvarna-twisting…
Reviving old thread, I bent my upper 2022 ktm350 clamp in a high speed crash, does Luxon offer a Vital discount code? Thanks.
VITALMX
Awesome…thank you ..just placed my order, free shipping also👍…
Awesome you are supporting Luxon, they are top shelf stuff.... Apologies for not replying to your post on my xtrig for sale, I forgot to reply they are no longer available.
Hope you are doing ok from crash!
All good…I did see they were sold… Luxon on here all time interacting with us goons, worth a purchase 👍 also heard it’s free Ti week😜
How much stronger are the Luxon design over the Fastway or Fly design?
Post a reply to: 2018 KTM Bar Mounts