Author Topic: Brake bleeding!!!!!!! (Read 23646 times) Tweet

turbojonn · « **on:** February 13, 2014, 11:27:25 AM »

I'm posting this here because you road guys know what the heck you're doing when it comes to brakes. I've pumped fluid through my front brakes at for at least an hour straight and they're still very mushy. They worked before I pulled the caliper and pads out (they were sticking). Any ideas?

MJ Williams · « **Reply #1 on:** February 13, 2014, 11:46:29 AM »

Get a Mity vac or something like that and pull the fluid through. Cycle Gear sells a cheesy one that will get the job done for cheap. Usually that is my issue when I have had mushy brakes after a rebuild. There are so many high spots for air to hide.

SEJ · « **Reply #2 on:** February 13, 2014, 03:14:49 PM »

Quote from: turbojonn on February 13, 2014, 11:27:25 AM

I'm posting this here because you road guys know what the heck you're doing when it comes to brakes. I've pumped fluid through my front brakes at for at least an hour straight and they're still very mushy. They worked before I pulled the caliper and pads out (they were sticking). Any ideas?

Have you bled them at the master cylinder? Air bubbles travel upwards and that is usually a troublesome spot.

knecum · « **Reply #3 on:** February 13, 2014, 07:10:46 PM »

Bleed the master first, you'll be done in 10 mins every time!! Have it full, crack banjo bolt, pull lever in and hold, tighten banjo, release..repeat.. catch fluid with rag while doing it.. do that 3-4x then do calipers.. I like doing it the old timers way… hose and pepsi bottle

mike46 · « **Reply #4 on:** February 13, 2014, 07:25:01 PM »

After you get pressure pull the lever back and zip tie, rubber band etc to the throttle grip. Let it sit overnight, couple of days etc. It helps evacuate micro bubbles. Bleeder banjo bolts work well and are less messy than cracking a regular master banjo.

knecum · « **Reply #5 on:** February 13, 2014, 07:34:15 PM »

Quote from: mike46 on February 13, 2014, 07:25:01 PM

After you get pressure pull the lever back and zip tie, rubber band etc to the throttle grip. Let it sit overnight, couple of days etc. It helps evacuate micro bubbles. Bleeder banjo bolts work well and are less messy than cracking a regular master banjo.

. Not trying to be a smart azz. But no need for that. Do what I said and your done.

turbojonn · « **Reply #6 on:** February 13, 2014, 08:50:24 PM »

You guys are frickin fantastic. I'm off to the garage to bleed.

turbojonn · « **Reply #7 on:** February 13, 2014, 10:30:35 PM »

Got it bled

Thanks all.

mike46 · « **Reply #8 on:** February 14, 2014, 07:18:20 AM »

Quote from: knecum on February 13, 2014, 07:34:15 PM

Quote from: mike46 on February 13, 2014, 07:25:01 PM
After you get pressure pull the lever back and zip tie, rubber band etc to the throttle grip. Let it sit overnight, couple of days etc. It helps evacuate micro bubbles. Bleeder banjo bolts work well and are less messy than cracking a regular master banjo.
. Not trying to be a smart azz. But no need for that. Do what I said and your done.

I have done it for years and it helps. Mike Baldwin, (4 years in a row 500cc AMA champion, 3 time Suzuka winner, Team Roberts GP winner etc) his tuner Ray Plumb and I had a good conversation about this almost 35 years ago. I'll continue to do it based on their feedback and my personal experience.

turbojonn · « **Reply #9 on:** February 14, 2014, 10:53:16 AM »

I'll do that too, thanks again.

I like the idea of loosing the microbubbles. I saw a lot of them in the fluid as it was pumping through the clear line I had going to the catch bottle.

knecum · « **Reply #10 on:** February 14, 2014, 07:39:04 PM »

Quote from: mike46 on February 14, 2014, 07:18:20 AM

Quote from: knecum on February 13, 2014, 07:34:15 PM
Quote from: mike46 on February 13, 2014, 07:25:01 PM
After you get pressure pull the lever back and zip tie, rubber band etc to the throttle grip. Let it sit overnight, couple of days etc. It helps evacuate micro bubbles. Bleeder banjo bolts work well and are less messy than cracking a regular master banjo.
. Not trying to be a smart azz. But no need for that. Do what I said and your done.
I have done it for years and it helps. Mike Baldwin, (4 years in a row 500cc AMA champion, 3 time Suzuka winner, Team Roberts GP winner etc) his tuner Ray Plumb and I had a good conversation about this almost 35 years ago. I'll continue to do it based on their feedback and my personal experience.

. I'm not saying it won't work, but you can get it done in 10-15 mins and not wait over night.

mike46 · « **Reply #11 on:** February 15, 2014, 07:43:18 PM »

Quote from: knecum on February 14, 2014, 07:39:04 PM

Quote from: mike46 on February 14, 2014, 07:18:20 AM
Quote from: knecum on February 13, 2014, 07:34:15 PM
Quote from: mike46 on February 13, 2014, 07:25:01 PM
After you get pressure pull the lever back and zip tie, rubber band etc to the throttle grip. Let it sit overnight, couple of days etc. It helps evacuate micro bubbles. Bleeder banjo bolts work well and are less messy than cracking a regular master banjo.
. Not trying to be a smart azz. But no need for that. Do what I said and your done.
I have done it for years and it helps. Mike Baldwin, (4 years in a row 500cc AMA champion, 3 time Suzuka winner, Team Roberts GP winner etc) his tuner Ray Plumb and I had a good conversation about this almost 35 years ago. I'll continue to do it based on their feedback and my personal experience.
. I'm not saying it won't work, but you can get it done in 10-15 mins and not wait over night.

Dude....lighten up....all our bikes sit overnight unless you are riding 24/7. Like I said....once you get the pressure up. Why are you so hard on me? Did I piss you off at some point or are you just a know it all??

knecum · « **Reply #12 on:** February 15, 2014, 08:27:52 PM »

Just telling you the easiest and better way. Sorry its just my 31 yrs exp talking. My bad! Either there's air or no air.

mike46 · « **Reply #13 on:** February 15, 2014, 08:39:01 PM »

Quote from: knecum on February 15, 2014, 08:27:52 PM

Just telling you the easiest and better way. Sorry its just my 31 yrs exp talking. My bad!

For crying out loud....I didn't say anything about your method....like I said...when the bike is sitting the garage pin it back. Just my 40 years of experience talking. I was born 1/31/58 and bought my first big road bike...a 1975 CB750F in 1976. Prior to that Honda 70, a Harley 125 and 175....OMG!
I get it....I say the sky is blue....you say it is actually light blue. I know the Mensa type folks....they are smarter than everybody else and have the credentials to prove it.
Just for your info I work with a LSR guy doing vintage stuff in Australia..he is very smart ..my main work is with SOHC CB750's. I produce the highest flowing stock port K head in the world at this point. I don't know if you do cylinder head development but give me a break. I also produce a billet block for the same engine that takes it from 736cc to over 1050 with a Nikasil bore. I'm no genius but I am a humble man with a Superflow 260 (with Flowcom...nice!).
I guess I pissed you off some point.....I'll leave it at that.

knecum · « **Reply #14 on:** February 15, 2014, 08:54:07 PM »

mike46 · « **Reply #15 on:** February 15, 2014, 08:56:21 PM »

Quote from: knecum on February 15, 2014, 08:54:07 PM

Ok.

Thanks....I appreciate that Kevin. Hey...as an aside ...I still have that 75 CB750F....it is known as the "Million Dollar CB". It has more parts from billet cylinder, Carrillo's, one off transmission etc etc etc than anybody can imagine. And then there is my FJ, RC51, Busa, CBX, 86 GXSR750 etc.

knecum · « **Reply #16 on:** February 15, 2014, 09:21:14 PM »

Kevin??? I didn't even read your last post. Lol. Sorry Jim!

mike46 · « **Reply #17 on:** February 15, 2014, 09:24:59 PM »

OK....OK...you got me Steve. And actually you got it right as my first name is James but I have gone by my middle name of Michael since birth......gotcha dude!

mike46 · « **Reply #18 on:** February 15, 2014, 09:45:28 PM »

Quote from: knecum on February 15, 2014, 09:21:14 PM

Kevin??? I didn't even read your last post. Lol. Sorry Jim!

Sorry again for the name screw up. I think you would find the rest of the post interesting.....maybe not.

knecum · « **Reply #19 on:** February 15, 2014, 10:17:54 PM »

I'll take a look. Really I'm just trying to help!

mike46 · « **Reply #20 on:** February 15, 2014, 10:27:55 PM »

Quote from: knecum on February 15, 2014, 10:17:54 PM

I'll take a look. Really I'm just trying to help!

Me too...just putting information out that I have acquired over the years.
Geez.....I didn't think it would get to this point over brake bleeding!

If you met me you would probably like me.....I am down to earth and unpretentious. I don't know if you know my friend Rick Stetson but I am friendlier than him. JUST JOKING!
Then again.....you might not know Rick.

mike46 · « **Reply #21 on:** February 16, 2014, 12:02:51 AM »

Hey...you from Nutley....I have relatives from my Dad growing up there......maybe brunch or something.

HOS · « **Reply #22 on:** February 16, 2014, 03:14:13 AM »

Message to the OP, get yourself a Mityvac, easy brake charging and bleeding.
I wish I'd bought one years ago.
On my Kawi I charged and blead 2front, 1rear and the clutch line in 20 minutes tops.
I mean EASY

HOS · « **Reply #23 on:** February 16, 2014, 03:23:13 AM »

Just to add to that, all 4 lines and cylinders were dry. New lines, banjos and seal service kits.
The Mityvac draws the fluid through from the master cylinder reservoir.
You just keep topping up the reservoir with fluid as you draw the fluid through. Pouring the fluid carefully into the reservoir means there are no bubbles. Minimal wastage of fluid too.
I've been messing around with bikes, breaking them building them, tuning them, etc for a few decades and this tool is one of the best systems I've ever had.
Anyone else used a Mityvac?

knecum · « **Reply #24 on:** February 16, 2014, 05:44:08 AM »

Quote from: HOS on February 16, 2014, 03:23:13 AM

Just to add to that, all 4 lines and cylinders were dry. New lines, banjos and seal service kits.
The Mityvac draws the fluid through from the master cylinder reservoir.
You just keep topping up the reservoir with fluid as you draw the fluid through. Pouring the fluid carefully into the reservoir means there are no bubbles. Minimal wastage of fluid too.
I've been messing around with bikes, breaking them building them, tuning them, etc for a few decades and this tool is one of the best systems I've ever had.
Anyone else used a Mityvac?

. Hos I have a mityvac and a comp air sucker that can suck the system dry even in a car. You know what's funny, I never use the mityvac and I only use the comp air when sucking all the old Shit out. I always resort to the old way of the bottle nd hose. I like seeing or should I say not seeing bubbles that maybe in the system.James yes I know Rick Stetson. Just ask him if he knows me.

speedduck · « **Reply #25 on:** February 16, 2014, 11:03:49 AM »

Any idea why fully functioning front brake was totally lost while running half a day in dyno ? There was nobody home. Fortunately there was a guy helping catching it coming down from dyno stand. It must have been group of micro bubbles gathering somewhere(?).

knecum · « **Reply #26 on:** February 16, 2014, 01:42:57 PM »

What just out of the blue? Check your rotors! If they are bent it will have pressure then not have press. Odd how all the sudden this happens! What yr and how many miles on the bike?

firemanjim · « **Reply #27 on:** February 16, 2014, 02:31:48 PM »

I have a Mighty Vac and I sometimes get a bike that sneers at it. I use a big syringe filled with fluid and attach to bleeder screw, forces the air up into reservoir, fast and easy!

mike46 · « **Reply #28 on:** February 16, 2014, 04:21:40 PM »

Hey Steve....an aside from the irrelevant comments...like I said ...your method is valid.....your discrediting me...on something so mundane like bleeding I would have to say I don't care but that would be dis-ingeniousness at best. I had a shop in the 90's...along with a full time job at Boston Schools (because I needed good health care for me, my wife and 2 sons....I am a licensed Occuptional Therepist)
While I might not be at the forefront of American LSR etc I do have a presence in the world of 2 wheels. It may not be on this continent but it does not diminish my efforts. You deserve a lot of credit for your work with Bill Warner and others.
I find it interesting that you are unable to afford others that work hard at this same sort of the thing the same luxury.
As I said ....why are you so hard on me.........I guess I did something to aggravate you or piss you off in the past. That is a line starting past my wife.
I will call you to straighten this out...it doesn't make sense.
Mike Rieck (pronounced Rick)

knecum · « **Reply #29 on:** February 16, 2014, 07:43:53 PM »

Quote from: mike46 on February 16, 2014, 04:21:40 PM

Hey Steve....an aside from the irrelevant comments...like I said ...your method is valid.....your discrediting me...on something so mundane like bleeding I would have to say I don't care but that would be dis-ingeniousness at best. I had a shop in the 90's...along with a full time job at Boston Schools (because I needed good health care for me, my wife and 2 sons....I am a licensed Occuptional Therepist)
While I might not be at the forefront of American LSR etc I do have a presence in the world of 2 wheels. It may not be on this continent but it does not diminish my efforts. You deserve a lot of credit for your work with Bill Warner and others.
I find it interesting that you are unable to afford others that work hard at this same sort of the thing the same luxury.
As I said ....why are you so hard on me.........I guess I did something to aggravate you or piss you off in the past. That is a line starting past my wife.
I will call you to straighten this out...it doesn't make sense.
Mike Rieck (pronounced Rick)

. I thought this was over. Stop it with the I'm so hard on you. If you go back and read everything that was said how can you come up with I'm being hard on you. Your the one that was freaking out. I should be mad at you!! No let's move on. Please don't call me on a Sunday about this Shit. That's ridiculous.!! I'm off i

Rocketgeezer · « **Reply #30 on:** February 16, 2014, 09:10:47 PM »

Quote from: firemanjim on February 16, 2014, 02:31:48 PM

I have a Mighty Vac and I sometimes get a bike that sneers at it. I use a big syringe filled with fluid and attach to bleeder screw, forces the air up into reservoir, fast and easy!

This is my favorite method, works perfectly every time, just have to be mindful not to push fluid out of the master cly and spill it, not a big deal just takes a little care,

speedduck · « **Reply #31 on:** February 17, 2014, 12:42:23 PM »

Quote from: knecum on February 16, 2014, 01:42:57 PM

What just out of the blue? Check your rotors! If they are bent it will have pressure then not have press. Odd how all the sudden this happens! What yr and how many miles on the bike?

It was prepared for bike show, rims painted etc, but brake lines and pads in place. After assembling everything brakes worked ok when pushing it around. Then this dyno session and totally lost the front brake. 2009 model, 23000mls, stock brake system.
Maybe the bubbles formed reading this thread.

SEJ · « **Reply #32 on:** February 17, 2014, 01:26:51 PM »

"Maybe the bubbles formed reading this thread."

Rocketgeezer · « **Reply #33 on:** February 17, 2014, 03:04:33 PM »

Quote from: speedduck on February 17, 2014, 12:42:23 PM

Quote from: knecum on February 16, 2014, 01:42:57 PM
What just out of the blue? Check your rotors! If they are bent it will have pressure then not have press. Odd how all the sudden this happens! What yr and how many miles on the bike?
It was prepared for bike show, rims painted etc, but brake lines and pads in place. After assembling everything brakes worked ok when pushing it around. Then this dyno session and totally lost the front brake. 2009 model, 23000mls, stock brake system.
Maybe the bubbles formed reading this thread.

Bubbles form from reading this thread? that much is for dam sure

FlatlandBusa · « **Reply #34 on:** February 17, 2014, 08:45:13 PM »

turbojonn · « **Reply #35 on:** February 18, 2014, 06:19:41 PM »

I'm not sure which method is best, so I did all of them. Now, no bubbles. Two page thread

HOS · « **Reply #36 on:** February 19, 2014, 12:12:37 PM »

Quote from: turbojonn on February 18, 2014, 06:19:41 PM

I'm not sure which method is best, so I did all of them. Now, no bubbles. Two page thread

Good job you didn't ask anything technical

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Author Topic: Brake bleeding!!!!!!! (Read 23646 times) Tweet