I have an 2010 FXDC with 1.5" stock risers and clamp. My 16" Burly Apes (1" diameter) tend to move on me if I man handle them...which includes pushing the bike or bad potholes. Part of the reason is the lack of Knurling on the clap/riser. Any advice on riser/clamps that would get me a better grip. I've been eyeing Burly's handlebar clamp, but can't find a pic of the bottom...to see if it is knurled.

 

Some guys cut a beer can and put that around the bar where it clamps. You could also take to a machine shop and have them knurled. The bars aren't knurled or the clamp?

 

The bars have knurling, but it's in two areas, instead of the solid top clamp, perhaps I should move to separate clamps.

 

Drill and tap the risers and use a set screw.

 

You sure you got the top clamp tight?
top 2 bolts sung, tighten with bottom 2 bolts. Re tighten both.
The bottom bolt is what tightens the bars. If you have a space between the top and bottom on the bridge you may not have em tight.
Not saying you didn't tighten em, just a precaution.

 

use a punch and a hammer and knurl it yourself.........i had the same problem and this cured it

 

It sounds like you deff need new riser bushings. Get a quality neoprene pair and theyll last longer. When I put my 12's on last summer the stock bushings wore out within a week and the bars were moving when I moved the bike. I put new bushings in and it's worked perfect ever since.

 

simple and easy. cut a piece of emery cloth, put that under the riser clamp, tighten to spec again, will never have an issue and it is super easy

 

wow that would be scary as ur riding and ur bars are moving

 

I wonder if skate board grip tape would work the same. That way you could stick the tape under the riser clamp.