There is something not quite right with the rear brake, and it is not my riding ability, thank you very much.
I tried stopping from an indicated 50MPH using only the rear brake and it took about a city block (1/8th mile) and I was standing on it pretty hard. And even when I eventually whoaed it down to a slow speed like 5MPH the rear tire was still not skidding or squealing on doing anything else but slowly coming to a stop.
Simply shutting down the throttle going an indicated 50MPH in 4th gives more braking from the engine than I can get from the rear brake. That is not a good thing.
I tried doing simulated panic stops from 50 - 0 and the unsettling part is that when using the front brake I could not feel the difference in applying the rear brake even though it seems to me that I was applying a pretty significant amount of force to the brake pedal. And when I release the rear brake pedal completely I still could not feel any difference. It felt for all the world as if the front brake was doing 100% of the braking and the rear brake was contributing nothing. I know this cannot be true in the literal sense but it feels that way.
The front brake is an entirely different story. That front brake works perfectly and I generally only use one finger.
After a series of 50 - 0 tests the rear brake rotor was warm, so there is at least some friction taking place.
I was not keeping score, but I guess I did about a dozen 50 - 0 tests and that was enough to tell me not to get in a real panic stop situation because the rear brake is pretty much out to lunch on the whole deal.
In reference, my last bike was a Honda Nighthawk 750 (CB750) with the same sort of rear disc brake. If memory serves correctly that bike would stop in one-third the distance from an indicated 50MPH using only the rear brake with maybe half the pressure on the brake pedal. The stopping distance on this KLR650 using only the rear brake is nearly suicidal.
What is the procedure from bleeding the rear brake? I see where the bleeder valve is located and I know I should put down shop rags or paper towels or napkins were the brake fluid would be expected to drip because brake fluid is somewhat corrosive to many finishes. If the procedure is the same on any vehicle I guess I could find it in the internet search engine Google somewhere.
Thanks for your help.