brake pads bedding-in

Skippii · February 8th, 2012, 01:49 PM

Just "upgraded" my brakes. I get that there's a bed-in period where the brakes won't perform as well as later, but the new HH sintered pads and rotor are so much squishier than before, I'm starting to doubt they'll ever get as good as the stock ones. I know when I switched to Vesrah pads on another 250 there was a huge difference immediately in the initial bite. I've got 180 miles on these brakes, all this morning, but that was mostly highway. The initial bite on these ones is similar in performance to just dragging my feet on the ground. How long will this last?
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outasight20 · February 8th, 2012, 01:55 PM

Did you replace your brake fluid and bleed the brakes? It's possible you have air bubbles stuck in the line somewhere. If that's the case, you will never have firm brakes. I know when I switched to EBC HH pads with the stock rotors, they felt very weak for the first 50 miles or so, but became much stronger after that. I now have about 500 miles on them, and they brake really well. Try going to a parking lot and doing emergency stopping from 40 or 50 mph. Do that many times and see if they get stronger or not. You also might have gotten grease or other foreign lubricant on the discs or pads. You can wipe the rotors off with a paper towel and water, but do not use anything else on the rotors. Let us know how it goes

lgk · February 8th, 2012, 01:55 PM

when is the last time you bled your brakes

LoD575 · February 8th, 2012, 08:47 PM

Every rotor I have installed on non-motorcycles have been coated with a light weight oil for rust prevention. The oil is removed by using a rag with some brake cleaner along the contact surfaces of the rotor.

Brake fluid does absorb ambient moisture over time through brake hoses and seals. Draining and bleeding the system periodically removes that accumulated moisture.

Water will not remove a petroleum based lubricant.....

itsa250bro · February 9th, 2012, 04:38 PM

Let me start by saying that I know a lot more about bicycles and cars but, I learned a few years ago (from a bicycling magazine) that the first thing you need to do after changing the pads is to set them properly. Maybe this is similar to what you are calling "bedding-in" but, the processes is pretty simple. Ride for a few miles with the brakes on. Vary between full on and lightly dragging them to get them very hot. I've been doing this on bicycles and cars since I've read that article and it definately helps.

LoD575 · February 9th, 2012, 05:07 PM

Quote:

Originally Posted by itsa250bro

Let me start by saying that I know a lot more about bicycles and cars but, I learned a few years ago (from a bicycling magazine) that the first thing you need to do after changing the pads is to set them properly. Maybe this is similar to what you are calling "bedding-in" but, the processes is pretty simple. Ride for a few miles with the brakes on. Vary between full on and lightly dragging them to get them very hot. I've been doing this on bicycles and cars since I've read that article and it definately helps.

Same thing different wording. Bedding in is the concept of conforming the new pads to the rotors eliminating minor production imperfections.

Skippii · February 11th, 2012, 11:14 AM

It seems to be a moot point, since my engine decided to crap out and leave me on the interstate 10 miles after I posted this.
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Alex · February 11th, 2012, 11:33 AM

Oof! Diagnosis?

Skippii · February 11th, 2012, 01:24 PM

Intake for the coolant pump came loose, judging by all the coolant that sprayed out from there. Possibly damaged piston rings, given how little compression the engine seems to have when you crank the starter...spins around like WHHHEEEEEEE!!!!!
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choneofakind · February 11th, 2012, 02:26 PM

Time for a bore job since you'll be in there for new rings anyways?

alex.s · February 11th, 2012, 05:56 PM

time to cut it in half and weld on the bottom half of something else... at least thats what i hope/imagine skippiis solution might be. maybe some kind of dirt bike or a car.

February 8th, 2012, 01:49 PM	#1
Skippii Milkshake Drinker Name: Skippii Location: Richmond, Va Join Date: Aug 2011 Motorcycle(s): 2007 Orange DRZ400-S, 2005 Ninja 250 & Custom Thundercunt Dirt Chopper Posts: A lot.	brake pads bedding-in Just "upgraded" my brakes. I get that there's a bed-in period where the brakes won't perform as well as later, but the new HH sintered pads and rotor are so much squishier than before, I'm starting to doubt they'll ever get as good as the stock ones. I know when I switched to Vesrah pads on another 250 there was a huge difference immediately in the initial bite. I've got 180 miles on these brakes, all this morning, but that was mostly highway. The initial bite on these ones is similar in performance to just dragging my feet on the ground. How long will this last? Posted via Mobile Device

February 11th, 2012, 11:33 AM	#8
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	Oof! Diagnosis? __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)

February 11th, 2012, 05:56 PM	#11
alex.s wat Name: wat Location: tustin/long beach Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much. Blog Entries: 5 MOTM - Oct '12, Feb '14	time to cut it in half and weld on the bottom half of something else... at least thats what i hope/imagine skippiis solution might be. maybe some kind of dirt bike or a car. __________________________________________________

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February 8th, 2012, 01:55 PM	#2
outasight20 ninjette.org member Name: Weezy Location: Massachusetts Join Date: May 2011 Motorcycle(s): 2005 Yamaha FZ6 Posts: 169	Did you replace your brake fluid and bleed the brakes? It's possible you have air bubbles stuck in the line somewhere. If that's the case, you will never have firm brakes. I know when I switched to EBC HH pads with the stock rotors, they felt very weak for the first 50 miles or so, but became much stronger after that. I now have about 500 miles on them, and they brake really well. Try going to a parking lot and doing emergency stopping from 40 or 50 mph. Do that many times and see if they get stronger or not. You also might have gotten grease or other foreign lubricant on the discs or pads. You can wipe the rotors off with a paper towel and water, but do not use anything else on the rotors. Let us know how it goes

February 8th, 2012, 01:55 PM	#3
lgk ninjette.org certified postwhore Name: Jason Location: Norfolk, VA Join Date: Dec 2011 Motorcycle(s): 2012 EX250, 2014 EX300 Posts: A lot.	when is the last time you bled your brakes

February 8th, 2012, 08:47 PM	#4
LoD575 ninjette.org sage Name: Steve Location: Valdosta GA, US Join Date: Jul 2011 Motorcycle(s): 2012 Ninja 250, 2006 Ninja ZX6R-636 Posts: 661	Every rotor I have installed on non-motorcycles have been coated with a light weight oil for rust prevention. The oil is removed by using a rag with some brake cleaner along the contact surfaces of the rotor. Brake fluid does absorb ambient moisture over time through brake hoses and seals. Draining and bleeding the system periodically removes that accumulated moisture. Water will not remove a petroleum based lubricant.....

February 9th, 2012, 04:38 PM	#5
itsa250bro ninjette.org member Name: Tommy Location: Flemington, NJ Join Date: Sep 2011 Motorcycle(s): 2008 Ninja 250 CP Blue Posts: 149	Let me start by saying that I know a lot more about bicycles and cars but, I learned a few years ago (from a bicycling magazine) that the first thing you need to do after changing the pads is to set them properly. Maybe this is similar to what you are calling "bedding-in" but, the processes is pretty simple. Ride for a few miles with the brakes on. Vary between full on and lightly dragging them to get them very hot. I've been doing this on bicycles and cars since I've read that article and it definately helps.

February 11th, 2012, 11:14 AM	#7
Skippii Milkshake Drinker Name: Skippii Location: Richmond, Va Join Date: Aug 2011 Motorcycle(s): 2007 Orange DRZ400-S, 2005 Ninja 250 & Custom Thundercunt Dirt Chopper Posts: A lot.	It seems to be a moot point, since my engine decided to crap out and leave me on the interstate 10 miles after I posted this. Posted via Mobile Device

February 11th, 2012, 01:24 PM	#9
Skippii Milkshake Drinker Name: Skippii Location: Richmond, Va Join Date: Aug 2011 Motorcycle(s): 2007 Orange DRZ400-S, 2005 Ninja 250 & Custom Thundercunt Dirt Chopper Posts: A lot.	Intake for the coolant pump came loose, judging by all the coolant that sprayed out from there. Possibly damaged piston rings, given how little compression the engine seems to have when you crank the starter...spins around like WHHHEEEEEEE!!!!! Posted via Mobile Device

February 11th, 2012, 02:26 PM	#10
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	Time for a bore job since you'll be in there for new rings anyways?