35'?..  Brrrr!...

Not sure of the angle of mine, but probably close.  Need about 3 to 4" riser to clear tank...
Bar length and clampdown angle, will make a difference as well... I like some downturn on the bar ends...

My throttle switches just barely clear the gas cap...

thanks guys,

i am thinking this may be the way i go.

If you are looking to get new risers I would be interested in buying your stock risers and possibly bar also. I have stock buck horns and I am looking to buy risers and a drag bar.

Filled mine with lead shot. Worked pretty good.

Serow

Us redneck deer hunters do that to our climbing treestands to dampen the noise. it definitely works for that. i feel sure that sound waves probably have less energy than motion waves.

Serowbot wrote on 06/21/12 at 10:10:11:


LOL, I know.   I've used that stuff before and it's like attack of son of flubber or something.

I've been doing some research and found that various "fillers" don't suppress as much as they move the resonant frequency up or down the scale.  Completely empty, the bars are like a bell with a natural resonance (in fact they ring if you hang them up and hit them with a wrench).  If their natural ring or any harmonic is close to the bike's vibration at a given rpm, then you will get a combining amplification factor.  In any case, if I could just rid the primary vibration at hiway speeds of 60..70mph (rpm?) then I'd be semi-pleased.

I've looked at various things like mixing lead shot with silicon gorp, or inserting hollow lead round stock with a bolt thru it to expand and pull it tight inside the tubing.  There are also several companies who make "tuned mass dampers" that vibrate at the same frequency, but opposite phase (i.e., counter vibrate).

I even came up with a design with a microcontroller that reduces oscillations dynamically at any rpm using counter vibration feedback.   The problem is you have to drill a hole in your bars and run 12V inside, and the gadget also wears out eventually.

I looked at BBs and loose shot.  One thing I read about it tho, is if you are using weight to move the resonance lower (heavier = lower), then you want the weight anchored solidly to the bar itself.   Otherwise the bar will still vibrate separately from the loosely bound material inside.   Think of a ping pong ball with a steely inside.  If the steely is left loose, you can still shake the ball reasonably easy, but if the steely is glued to the inside it makes it harder to shake the ball, because the total mass being shaken increases.  I dunno, a lot of this is theory anyway???