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| Falco |
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 Falco Traffic Copper

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| chris-red |
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 chris-red Have you considered a TDM?

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| RhynoCZ |
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 RhynoCZ Super Spammer

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 Posted: 14:02 - 15 Apr 2016 Post subject: |
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What Chris says, always check the pads, not the fluid. When people bleed brakes with worn pads, they always pour in the fluid up to the top notch of the reservoir.
2000 miles? Is the caliper binding? I did, double of that on the ZX7R and the pads were still alright for the next 5-6 thousand miles and maybe more, when I sold the motorcycle. Something's just not right, when a set of brake pads last longer in a heavy ''superbike'' than in a light 125cc commuter motorcycle.
Anyway, I also second the Sintered pads idea. ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor |
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| jaffa90 |
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 jaffa90 World Chat Champion
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| Beehive Bedlam |
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 Beehive Bedlam World Chat Champion
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| MCN |
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 MCN Super Spammer

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| Falco |
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 Falco Traffic Copper

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 Posted: 20:25 - 15 Apr 2016 Post subject: |
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Thanks for the replies guys.
| chris-red wrote: | Check the pads rather than relying on the fluid level. I can't say I've noticed the level drop with knackered pads and that is with large dual caliper setups.
I've always used EBC Sintered (HH)
Someone will no doubt be along to tell you "Sintered ruins discs". I ran nothing but sintered pads in my TDM and the discs lasted for 70 something thousand miles. What ruins discs is poor maintenance.
The provide far superior stopping power especially in the wet. |
| RhynoCZ wrote: | What Chris says, always check the pads, not the fluid. When people bleed brakes with worn pads, they always pour in the fluid up to the top notch of the reservoir.
2000 miles? Is the caliper binding? I did, double of that on the ZX7R and the pads were still alright for the next 5-6 thousand miles and maybe more, when I sold the motorcycle. Something's just not right, when a set of brake pads last longer in a heavy ''superbike'' than in a light 125cc commuter motorcycle.
Anyway, I also second the Sintered pads idea. |
I have tried to check the pads with the caliper on the bike, but I can't see much, even with a torch and a scrub on the sides to try make the wear marks more visible. So the pads are going to have to come out anyway to check their condition.
If worn pads don't cause a drop in the fluid level, do you know what could be the cause? If its any use as a diagnostic, the brake lever has started coming back further towards the handle bar before giving much reistance, there is ~ 2/3cm between the handlebar and the handle bar when pulled in.
It does seem like a very short period. I don't think the wheel is binding, I span the wheel a little today, getting the valve into a good position to check the pressure, but I'll have a proper look tomorrow (or Sunday if the weather forecast is correct, I draw the line at working in the snow).
The recommendations for sintered pads are much appreciated.
| God.i wrote: | Galfers give good stopping power long lasting and kick up virtually no dust.
SBS give super stopping power in all conditions not as hard wearing as the Galfers but I can live with that. |
Thanks for the tip, I don't know the names but I'll have a look for them.
| MCN wrote: | If you change material then you may have to rub the discs using 600 wet and dry to remove the brake material coating.
Then fit the new pads and bed them in.
It's a cnut of a task but it can reduce brake performance/expectation disappointment.
I support the front wheel of the ground and drive the wheel using a drilling machine against the tyre.
Just don't go mental with the speed or the wheel may eat your fingers.
Dig any old brake detritus from the place where the pads locate.
Clean everything with brake cleaner.
The pads should slip in easily. If not then the calliper isn't clean yet. Do again. |
That's great advice, thank you. I will probably put a weight on the back of the bike with the centre stand out to put the front wheel off the ground. I was intending to try and clean the pistons while I am changing the pads so it would make sense to clean the whole area behind the pads.
As it will probably take me while, this is scheduled for early May, I am just getting the materials together for it now. |
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| RhynoCZ |
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 RhynoCZ Super Spammer

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 Posted: 20:45 - 15 Apr 2016 Post subject: |
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If you fit brand new pads, fill the brake fluid reservoir up to the top notch, and then ride and the pads get worn, the fluid level should drop a bit, but not this quick. 2000 miles is a really short period of time. Motorcycles more powerful (faster) and heavier don't eat the pads this quick, that is what's making us concerned.
Definitely check the pads.
IF the brake system was leaking, you'll see a lot of air bubbles when you're going to bleed the system.  ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor |
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 Falco Traffic Copper

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 Falco Traffic Copper

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 Posted: 12:27 - 18 Apr 2016 Post subject: |
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Finally looked at the front wheel to check if the brake is binding, I think it may well be. I say this because though the wheel turns pretty freely, there is a faint hissing/grinding noise.
I have included pictures of the discs. I don't know what they are supposed to look like, but I have a bad feeling that the pads have been binding and those lines are scores on the disc.
Is it bad? Should I be looking to replace the disc as well as the pads?
https://i65.tinypic.com/29e3zmd.jpg
Close up:
https://i64.tinypic.com/14bnhix.jpg |
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| chris-red |
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 chris-red Have you considered a TDM?

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 Falco Traffic Copper

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| tom_e |
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 tom_e Brolly Dolly
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| chris-red |
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 chris-red Have you considered a TDM?

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 Posted: 14:30 - 18 Apr 2016 Post subject: |
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| FredTheHorse wrote: | Thanks Chris.
No extra resistance after hitting the brakes, though the lever can now get almost all the way to the bar, so there is something a bit wonky somewhere. The Disc (as of 2 months ago) is within spec and not warped.
Cheers for the step-by-step. Brake cleaner (and hopefully new pads) due on Wednesday, so hopefully be able to tackle it soon. I'll try to remember to take some pics if there is anything odd about the pads, I will be interested to find out why they have worn so fast. |
It may need bleeding too.
There are plenty of videos on this I'm sure.
However no-one seems to do my method, which IMO is the easiest and quickest.
Get a jam jar and half fill it with brake fluid. Get the right size tube to go over the bleed nipple, then drill a hole in the jam jar lid and poke the tube it in so the end is submerged, I also use a cable tie to keep the tube in place.
Take the fluid cover off.
Attach the tube to the bleed nipple and open it.
Pump the brake lever (Slowly so it doesn't splash).
Keep an eye on the tube/jar you should see fluid pumping through and hopefully bubbles too.
Top up the fluid level making sure it never gets near the bottom.
Once bubbles stop coming out tighten the nipple remove the tube and you are done.
People say you need to tighten and loosen the nipple between pumping, but I've never needed too. ____________________ Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything. |
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 RhynoCZ Super Spammer

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 chris-red Have you considered a TDM?

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| Rogerborg |
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 Rogerborg nimbA

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 Posted: 14:42 - 18 Apr 2016 Post subject: |
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Quick aside, my GS completely devoured a set of EBC/FA209/2 pads in exactly 2000 miles. They were disappointingly thin to begin with. I can't find any sign that the brake is binding.
I've replaced them with Brembo branded pads, which started out substantially fatter. Further bulletins as events warrant. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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 RhynoCZ Super Spammer

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 Posted: 14:46 - 18 Apr 2016 Post subject: |
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Your method means wasting 1/2 of a jar of brake fluid.  ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor |
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| chris-red |
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 chris-red Have you considered a TDM?

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 Posted: 14:55 - 18 Apr 2016 Post subject: |
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| RhynoCZ wrote: |
Your method means wasting 1/2 of a jar of brake fluid.  |
I once 'wasted' ~200ml of Brake fluid (about £1's worth) then have never had to since. The just sits in a shelf in my garage.
Are you really that tight? ____________________ Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything. |
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 chris-red Have you considered a TDM?

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 tom_e Brolly Dolly
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 chris-red Have you considered a TDM?

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 Falco Traffic Copper

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 Posted: 21:33 - 18 Apr 2016 Post subject: |
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| tom_e wrote: | How do the actual pads look? It's a 2 minute job to unbolt the caliper so you can see them.
It definitely sounds like you've gotten air in the system some how. |
Not sure yet. I won't get a chance to check them tomrrow, it will be Wednesday at the earliest. Though without any way of cleaning them it seemed a pit pointless, I might check them anyway, because I want to get to the bottom of what is going on.
This will be my first time working on the front brake (I chickened out and took it to the garage the first time, I had barely had the bike 3 weeks at that point) so I will be going very slowly and double checking everything, hence the large amount of time I am setting aside for the job.
No idea how air could have got it, but I'll certainly try bleeding it if there is nothing obvious going on with the pads. The last thing I did to the front brake was to change the fluid, but that was more than 1000 miles ago and it's only in the last 50 or so that the problems have shown up.
| chris-red wrote: | It may need bleeding too.
There are plenty of videos on this I'm sure.
However no-one seems to do my method, which IMO is the easiest and quickest.
Get a jam jar and half fill it with brake fluid. Get the right size tube to go over the bleed nipple, then drill a hole in the jam jar lid and poke the tube it in so the end is submerged, I also use a cable tie to keep the tube in place.
Take the fluid cover off.
Attach the tube to the bleed nipple and open it.
Pump the brake lever (Slowly so it doesn't splash).
Keep an eye on the tube/jar you should see fluid pumping through and hopefully bubbles too.
Top up the fluid level making sure it never gets near the bottom.
Once bubbles stop coming out tighten the nipple remove the tube and you are done.
People say you need to tighten and loosen the nipple between pumping, but I've never needed too.
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Damn, it wasn't that long ago I threw away ~ 1/2L of brake fluid that had been exposed to the atmosphere, wish I had known about this method then! The method recommended to change the brake is very similar and also works very well.
The only jam jars I have at the moment are 50ml ones, for bleeding I wonder if they would work
| Rogerborg wrote: | Quick aside, my GS completely devoured a set of EBC/FA209/2 pads in exactly 2000 miles. They were disappointingly thin to begin with. I can't find any sign that the brake is binding.
I've replaced them with Brembo branded pads, which started out substantially fatter. Further bulletins as events warrant. |
I'd be interested in hearing about how they do. The GS is pretty high on my list of potential big bikes, so information on its eating habits would be of great use. Out of interest, how are the steering bearings holding up? I hear it might have a habit of going through them as well. |
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| Chuffin Nora |
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 Chuffin Nora World Chat Champion
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 Rogerborg nimbA

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 Posted: 21:19 - 19 Apr 2016 Post subject: |
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| FredTheHorse wrote: | | Rogerborg wrote: | I've replaced [EBC pads] with Brembo branded pads, which started out substantially fatter. Further bulletins as events warrant. |
I'd be interested in hearing about how they do. The GS is pretty high on my list of potential big bikes, so information on its eating habits would be of great use. Out of interest, how are the steering bearings holding up? I hear it might have a habit of going through them as well. |
It's frugal. 65mpg+, 7000 miles on the rear tyre and there's still loads left, the front lasted more than 7000 miles, I got 5000 from front pads that were in when I got it, 7000+ from the rear pads. I took 2 links out of the chain at 17,500 miles but the sprockets have a fair bit left.
Those EBC pads have been the only let down.
The steering head bearings are fine at 17,500 miles, although other folk do report them going. I coincidentally checked them for play last weekend, wheel down and wheel up, not a hint of notch or wobble.
I've had a couple of minor electrical niggles. Very cold starting can occasionally (like, half a dozen times) result in the heated grips not coming on due to the bike deciding the voltage was too low when it was started. The solution is just to stop and restart, job done.
When it's been standing in the rain all day, the gear position sensor can occasionally get a bit confused. It doesn't effect the running at all and sorts itself out quickly. I'll pack it with ACF-50 dielectric grease at the next service. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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Old Thread Alert!
The last post was made 9 years, 257 days ago. Instead of replying here, would creating a new thread be more useful? |
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