Assuming you don't have a centre stand on the bike then get a front axle stand Los, it'll help in the future when working on the bike. The ability to get the rear wheel off the ground is perhaps even more useful i.e for cleaning and lubing the chain so a rear axle stand for your bike would also be very helpful.
i do have one, just the back tire one, don't see a point in getting a front one as of right now... the few times i lifted the front tire i did so by putting some bricks under the forks. anyways, thanks for everything.
Alright so I went on a 1 hour drive and it brakes fine. However I ran into a way bigger issue, I tried riding for 30 minutes without using the front brake. What I noticed is that the left disk heats up a lot, while the left one was compitly cold. The disk is clean so I guess the issue is in the caliper. The caliper looks good, no dirt or other shit inside. What could it be? It wasn't piping hot, I could hold my hand on it, but none the less it was very very hot while the right one stone cold
Uhm so, I. Noticed the oil is already kinda dirty, which is odd because the other day it was coming out clear from the bleeders, so the entire system should have clean oil in it. I'm cleaning the caliper pistons to see if that's what's causing the dragging, are all 4 of the pistons supposed to work together? The 2 on the lower side don't move
i pushed the pistons out on both calipers (not completely out) i gave them a good clean with rubbing alcohol, and then put some multipurpose lubricant on them, tomorrow i'm gonna test ride and see what happens. tell me if y'all got any tips
Do your best to find someone with good experience & knowledge to give advice face to face, not on the internet! People here will do their best to help you, but it's clear that you have a lot to learn about brake systems and this is not the way to be safe.
i'm sure i'll learn a lot by paying someone to fix it for me and never knowing what and how he did it
I didn't mean that you should pay someone else. I meant try to find someone who can help you understand your braking system with you.
well it's not exactly easy to find someone who will take time out of his day to teach you something, forums like this are the best bet for people to learn stuff like this.
All 4 pistons should move Los, those 2 look seized. Also if you have one disk heating up more than the other then the pads are rubbing against it which also indicates seized pistons in the callipers. It looks like the callipers need stripping and cleaning. However, as said above, to be safe it's best if someone experienced did it. Take it to a mechanic. If you want to learn then ask them you can watch while they do it, you never know they may let you.
That's odd, they are sized on both calipers, but there appears to be no corrosion or anything. And I can push them back with my fingers quite easily, well, might rebuild them looks easy The issue with the rubbing is that I think there is something bend, maybe the disc, because it only rubs when both brakes are on, when only one is on its fine
Do you think they are sized or could it also be not enough pressure in the system? If I stop one piston the others come out. Does this mean they are sized or can it also mean there is not enoguh pressure? I can rebuild the caliper it's quite easy, but I don't wanna do a messy job unless I'm sure it's the issue. BTW this also means I got scammed, the shithead whom I bought the bike from never mentioned the problem. And I found a bunch of other problems after I bought the bike that he didn't mention, would make a lawsuit on him but sadly its been 5 months. I saw they are sized 4 months ago, but I didnt realize they all had to move.
When the calliper is off the disk I would expect to see all 4 move when the brake lever is squeezed. They may not be completely seized, may be just a bit stiff, but the calliper does look like it could do with a thorough clean. As for the issues you found after buying the bike, well unfortunately it’s caveat emptor. It happens to us all, we just have to deal with them & fix them.
It wasn't my write so I don't know where he got them. What size is your master cylinder? There should be a number on the bottom somewhere containing the number 13, 14, 15 or 16 indicating the diameter of the cylinder. 16mm are not generally available but the outer dust seal from a PS15 will fit a PS16.
well, i took both calipers all apart and cleaned them, cleaned the pistons nicely and put everything back, i seem to have f it says 15-16, what does that mean?
Hmm. No idea to be honest but as far as I'm aware all the gold master cylinders fitted to twin disc Ducatis are 16mm
If it were me, after that job, I’d mark the calliper pinch bolts and caliper body with some yellow touch up paint, that way you’ll have a visual if the bolt begins to move and loosen. The last thing you want is those bolts working loose and it going unnoticed
Ah! but it's not a gold master, it's the black coffin type. Most probably the same as my 907ie. I'll check.
