I am new to the forum and pretty new to mountain biking. I purchased a 2017 Giant Trance 2 and like it. I weigh 205 pounds. I am running 205 pounds of air in the reach shock with 3 clicks of rebound reduction. My front shock has 75 pounds of pressure. I have tried running from three clicks of rebound reduction to neutral.
Bumps like wash board roads or rough terrain with quick small high speed bumps about rattle my teeth out of my head. The bike is fine on larger bumps.
I have tubed tires and am riding on Knobby Nics. They say the least pressure is 32 psi I was running 25 but ended with a flat. I am now running 32.
Is there anything I can do to soften these high speed small bumps and smooth the ride out?
i am running 30 plus of sag on the rear shock and still running about 220 pounds of pressure. That would include my 205 pounds and a ten pound backpack. On a moderate trail with bumps I use about 70plus percent of the travel. Would be less if I got of the seat more.
If the fork is brand new, it may take a few more rides to properly break in. Then you may notice it becomes more supple. Find a familiar trail with some washboard and play with the rebound setting. If you make small changes and ride the same section of trail you should be able to get er dialed. Also, you could try setting your sag to about 20% and see if it helps. Seems counter intuitive but it can make a difference.
On my Giant I run 20% sag front and 30% rear.. That seems to be about the best for me. But until you have a high end fork or shock level with separate high speed and low speed adjustments there is not a lot you can do.
i was using 25 pounds in the tires though tire recommended no less than 32. After a blowout I now run 30.
I think part of what you said I will do next, tubeless tires and much lower pressure. A buddy, only weighs 175, is running 20 pounds. He rides a Trek Fuel Carbon (without a doubt the nicest bike I have ridden). His is a Cadillac on the high frequency bumps.