Hmmm.... Here's a good test then... Lets say I go to my bike first thing in the morning, the first pull is soft, the second pull is spot on... I wonder what could be the issue. Even if I roll my bike out onto driveway, the pads will be pushed out if only a bit farther (with a situation of warped rotors, unbeknownst to me at the time), and I will notice that this first pull is still somewhat soft, albeit not as much as if I actually rode the bike. The test for me was to not ride or move the bike and to let some time elapse. Say, at 9am, I go to the garage and check: the first pull is soft, second pull is fine. Ok then. The next morning I come back to my bike (bike hasn't moved, lots of time has elapsed): first pull is spot on. Then, for me, that's how I knew the rotors were causing it - as the pads were still set in the normal position from the day before. Nothing could've moved them. (And obviously the front pulsing at slow speeds no matter how deeply I cleaned the front rotors was a good give-away). I was also skeptical on my bike at the time of the first pull being soft, second pull good, as a matter of the system constantly having to rebuild the pressure back up with each first pull. The reason why I waited a whole day to check again, was because if it was a 'pressure needing to be build back up issue', it would've definitely presented itself again after 24 hours had passed. Meaning, that next morning the pressure should've been low and the first pull should've been soft, but that wasn't the case, so I knew it wasn't a pressure issue. I'm not trying to moralize at all, I'm just sharing my thought-process on how I went about troubleshooting my issue. There are a lot of forums that say that rotors don't warp, or at least not often. When reading that, I just assumed that it meant 'never'. But I've learned that it does happen, although probably very infrequently, and that it could happen to someone else too, though it's always good to troubleshoot first the easier/cheaper possible weak links in the chain. I'm glad I'm not experiencing what Ike is experiencing, that sounds super frustrating. So, I am wondering with Ike, is if his bike experiences these symptoms only when the bike is in motion, or whether also at a standstill. Say he's just sitting on the bike, first pull soft, second pull good... Let some time elapse (5,10,30,60 seconds, 5 minutes, whatever). First pull soft, second pull good... If that was the case, it ain't a rotor issue. (which we already know, I'm just saying...) So my question for Ike, does it do this at a standstill? Or only with the bike in motion? And if it does it at a standstill? How much time needs to elapse for the first pull to become soft again? For instance, first pull soft, second pull good, wait x amount of seconds/minutes, is the first pull still good? How time would need to elapse for the first pull to become soft again?
Last edited by Flowbrook; 05-16-2017 at 10:45 AM.