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gs500e rebuild

Started by crisco, February 24, 2011, 10:00:05 PM

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just what to see what you all think of my build so far

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Total Members Voted: 3

crisco

a single mounting point is weaker and well not take as much force. because of the leverage that is putt on one mount instead of being spread out to two. but its not enough of a deference to matter unless your hanging the bike off the ground by the bars. cafe hillsy you would be very surprised to see the amount of force bar mounts can take  with my years of dirt biking i have been surprised many times at what they will take. and if you would like me to post a pic of the front end being held off the ground by the bars i will. lol. they are more then strong enough and a decent rider dont ride around with half his wait on the bars. i spend a lot of my time riding one handed sometimes none.

cafe hillsy

Quote from: tb0lt on March 07, 2011, 10:52:48 PM
How is it any different as far as lateral loading considering the clamping points are still the same? I can't imagine the forces on the individual bars being any different or higher than those acting on a single bar since all the same mounting points and methods used. If anything, the new setup is less prone to rotation inside the clamps with his custom bolt mod.  :dunno_white:

Without the middle section of the bars you only have one clamp per bar side instead of two. On conventional bars both clamps stabilize each side, so you have limited sideways forces on the individual clamps when pressure is applied to the bars . Think of a lever or pry bar trying to lift a rock - if the bar is just under the rock you have to apply less pressure to move it then if the bar is 2 feet under the rock (crap example, but hey....).

The other issue is resonant frequency vibrations. Taking out the middle part of the bars removes support and increases this. The thing about resonant vibrations is you don't know at what speed / revs they will occur and over what period of time is needed for them to do damage.

The real worry here is the integrity / longevity of the top triple more so than the bars. It probably won't happen as you're doing your maiden ride out of your driveway (actually, you can BET it wont..), but you have no idea when (or if) it might happen and you're introducing an element of risk that is potentially dangerous and totally avoidable.

crisco

well im done with it fore now.

jeffdodge

i really dig the bright frame and wheels.

noiseguy

Eee. Those bars. Not sure what is being accomplished here, but it's not safe.

OK, for pitch rotation, they are probably fine. I don't think they'll twist in the mounts.

For fore-aft and vertical motion at the bar end, not so good. Those bar clamps need the section of bar that you cut out to resist the fore-aft and vertical motions at the grips.

Imagine hanging the bike off your rafters by a rope at each handgrip. The handlebar tries to make a U-shape. With the 1-piece handlebar, the section between the clamp works to prevent the bars from going into a U-shape, and the clamps act only in the vertical direction.

Now, with what you have, the clamps have to withstand not only the vertical force, but also the twisting force that makes them want to be a U-shape. The clamps are not designed to resist this, and will fail by releasing the bar.

1990 GS500E: .80 kg/mm springs, '02 Katana 600 rear shock, HEL front line, '02 CBR1000R rectifier, Buddha re-jet, ignition cover, fork brace: SOLD

seamax

I like the flat black.

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