bar risers (regular to fat)
Posted May 23, 2005 - 09:03 AM
why not just buy them?
well, where I live, specialists are still much cheaper (with all necessary technology) than aftermarket stuff, and Id get nice cut from one pice, rather then moulded stuff
also you can email them to email@example.com
those seem simple and 4 bolt only
Posted May 23, 2005 - 05:37 PM
Posted May 23, 2005 - 05:52 PM
Posted May 24, 2005 - 12:15 PM
to skip to another product..anyone using those?
they seem fine because they move the bar forward, killing the angle of the fork clamps, but I dont really know what to expect from riding that way except for more space
Posted August 15, 2005 - 10:38 AM
copied the ones from the link in first post, but added more material for approx 1,5in rising of the bar
Posted August 15, 2005 - 10:46 AM
Posted August 15, 2005 - 11:34 AM
All that said, I’d buy a new top clamp and risers, or at least the adapters. But he is in Slovenia. I have no idea what parts cost around there, or what his financial situation.
Posted August 15, 2005 - 09:15 PM
It's hard to tell from looking at the photos if your risers are flat on the bottom or if they have a 7/8 inch diameter "half moon" to fit the void where the stock handlebars went on the triple clamp. If you have the half moon, or at least a 2 or 3 mm step that fits into that void, then your design will be a lot stronger because the half moon will carry the shear load if the bars try to bend in a crash. You won't have to worry about carrying all the shear load on the bolts.
Posted August 17, 2005 - 07:57 AM
in Slovenia adapters cost 70$ and provide max 0,6" rising of the bar
friend bought them and I used them for copying mine but with higher rising
bolts used are 1/3" for lower part riser, bolted to the clamp and the same for upper part bolted to the lower riser
I could have risers CNC cut, but was given this option right after I invested quite some work in making them, so just had to finish
im not into tensile and shear strengths, but I used the strongest possible bolts (rostfrei) and bought the correct size to use the whole length of the threads in the clamp and in the riser
at that bolt thickness, i dont belive there is a serious breaking issue
I mostly ride tight woods, hillclims, fallen trees, mud, so big jumps dont concerne me and already I had 2 nasty rides with many falls over wet lodges hitting rocks with bar, but nothing really happened, very rigid structure for now
about the half moon sitting in the clamp "negative half moon"..I actually had to skip it, to provide even surfaces on both risers so at first I was thinking on bolting up the half moons, but after closer inspection of the original riser, which had this moon, its only used to properly fix when firstly bolting the lower part on the clamp...it doesnt have any contact with the clamp "negative half moon" and can move back and forth about 0,04" for correct bar allignment in both adapters
might reconsider for making at least a bit of seating if strength would increase
Posted August 17, 2005 - 09:28 AM
Posted August 17, 2005 - 11:23 AM
Posted August 17, 2005 - 01:55 PM
Seems like that would make a big difference in strenght.
Posted August 17, 2005 - 07:11 PM
The conversion adapters give me about .5 like you said. That along with the high bend bars make a HUGE difference as I do much of my riding standing up.
Another thing I did was to grab a kidney belt. That also keeps my lower back much less fatigued after a few hours of riding.
I really love the comfort of where my bars are at, not to mention the added leverage
Posted August 18, 2005 - 07:01 AM
when they felt on the concrete floor, they got scars like ordinary alu, which I used
I got renthal fat bar cheap, and high bars are a waitable product, so I decided to go for an ultra high riser
I think it will work, since my previous, regular to regular risers, were much worse built and they worked flawlessly
the only problem I had at the beginning was sliding bar to forth, because of not really well polished bar seating surfaces, wich I eliminated with more bolt torque...and it worked for a year, no questions asked
now, those seating surfaces are shaped close to perfect and that "close to" is filled with 2 component hardeninig steel