09-26-2017, 11:43 PM
Guth, I talked with Dan at TD a few days ago, and followed up with sag information for the fork.
Sag of CB1100 fork (09 25 17)
Bottom of lower triple clamp to top of wiper with front wheel off ground/fork fully extended: 6 ½”
Bottom of lower triple clamp to top of wiper with front wheel on ground, 160# rider in saddle: 5 ½”
So, 1" from fully extended no load to loaded with bike and rider. I had no one to hold me up, but I was able to keep the bike level with very little foot pressure, so I think the loaded reading is good. Used a zip tie on one fork leg to 'record' the loaded sag.
His first thought was that they may have provided spacers that were too long. He asked that I:
- elevate front wheel by elevating and allowing the fork to extend.
- remove one fork cap & measure the distance between top of fork spring and bottom of fork cap.
per Dan this measurement should be between 15-20mm.
- it measured 20mm, and the spring didn't seem to be under undue pressure.
- fork cap against the spacer was easily depressed and replaced.
They will be sending me a lighter set of fork springs to try. Re two additional bleed holes - we discussed, but he didn't indicate doing this.
I will be removing the fork tubes, draining them, removing the springs and GV emulators. I am not planning to split the forks, but leaving the TD damper rods in place. I will double-check the settings on both GV emulator springs. Probably go with lighter fork oil (10-15w), lighter fork springs, and slightly more air space. They recommend 125 mm below top of fork tube without springs or GVE in place.
That's where it stands at the moment.
Bob
Sag of CB1100 fork (09 25 17)
Bottom of lower triple clamp to top of wiper with front wheel off ground/fork fully extended: 6 ½”
Bottom of lower triple clamp to top of wiper with front wheel on ground, 160# rider in saddle: 5 ½”
So, 1" from fully extended no load to loaded with bike and rider. I had no one to hold me up, but I was able to keep the bike level with very little foot pressure, so I think the loaded reading is good. Used a zip tie on one fork leg to 'record' the loaded sag.
His first thought was that they may have provided spacers that were too long. He asked that I:
- elevate front wheel by elevating and allowing the fork to extend.
- remove one fork cap & measure the distance between top of fork spring and bottom of fork cap.
per Dan this measurement should be between 15-20mm.
- it measured 20mm, and the spring didn't seem to be under undue pressure.
- fork cap against the spacer was easily depressed and replaced.
They will be sending me a lighter set of fork springs to try. Re two additional bleed holes - we discussed, but he didn't indicate doing this.
I will be removing the fork tubes, draining them, removing the springs and GV emulators. I am not planning to split the forks, but leaving the TD damper rods in place. I will double-check the settings on both GV emulator springs. Probably go with lighter fork oil (10-15w), lighter fork springs, and slightly more air space. They recommend 125 mm below top of fork tube without springs or GVE in place.
That's where it stands at the moment.
Bob