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Main Area => General GS500 Discussion => Topic started by: mach1 on February 25, 2008, 10:23:54 PM

Title: any pros and cons
Post by: mach1 on February 25, 2008, 10:23:54 PM
I would like to link my rear brake with the front. I know the rear locks up easy so I would bleed air into the rear caliper.
Title: Re: any pros and cons
Post by: jrsgs5f on February 25, 2008, 10:51:20 PM
why would you want to do that.  I can't think of any pros.
Title: Re: any pros and cons
Post by: ohgood on February 26, 2008, 04:25:33 AM
Quote from: mach1 on February 25, 2008, 10:23:54 PM
I would like to link my rear brake with the front. I know the rear locks up easy so I would bleed air into the rear caliper.

yeeeikes !

maybe your rear brake arm (by your foot) is out of adjustment, and the travel is too aggressive ? or maybe you're just using it too aggressively ? either way, the rear locking is a really quick way to ruin your day. sure, if you were to allow air in the system, it wouldn't be as aggressive, but maybe something is wrong back there ?

wheel out of alignment, bald tire, too aggressive, slick roads, gravel, sand etc ?

you should be able to stop nornally and not lock the rear. once you learn to modulate the brakes instead of thinking of them as an ON OFF switch, you can get ALLOT of stopping power out of them without locking the rear.

:)
Title: Re: any pros and cons
Post by: GeeP on February 26, 2008, 05:56:56 AM
Learn proper braking technique. 

The problem with linked braking is the front/rear bias is set and cannot be adjusted during braking.  Therefore, you're never getting 100% braking because the rear must always be biased below the lock point.  On a bike capable of doing a stoppie, the bias point is 100% front, 0% rear, as the rear can come off the ground.  So, standard hydraulic linked brakes won't work too well.  You would have to come up with a proportioning valve that could vary the rear brake as a function of front suspension load, or braking G.
Title: Re: any pros and cons
Post by: ohgood on February 26, 2008, 06:13:27 AM
Quote from: GeeP on February 26, 2008, 05:56:56 AM
Learn proper braking technique. 

The problem with linked braking is the front/rear bias is set and cannot be adjusted during braking.  Therefore, you're never getting 100% braking because the rear must always be biased below the lock point.  On a bike capable of doing a stoppie, the bias point is 100% front, 0% rear, as the rear can come off the ground.  So, standard hydraulic linked brakes won't work too well.  You would have to come up with a proportioning valve that could vary the rear brake as a function of front suspension load, or braking G.

nice point. bmw and others have been working on this a while, and riders still complain about ABS and linked brakes. :)
Title: Re: any pros and cons
Post by: mach1 on February 26, 2008, 07:18:38 AM
I dont lock the rear brake, I dont even use a rear brake  (no brake pedal) I want to have a rear brake handle on my bars for wheelies( :icon_rolleyes:) yeah I know lame but ive seen it done on super bikes
Title: Re: any pros and cons
Post by: tussey on February 26, 2008, 09:54:50 AM
Quote from: mach1 on February 26, 2008, 07:18:38 AM
I dont lock the rear brake, I dont even use a rear brake  (no brake pedal) I want to have a rear brake handle on my bars for wheelies( :icon_rolleyes:) yeah I know lame but ive seen it done on super bikes

wait, why don't you have a rear brake pedal?
Title: Re: any pros and cons
Post by: frankieG on February 26, 2008, 10:05:00 AM
i disconnected my rear brake for a while cuz the electrical did not fit on my woodcraft rearsets.  i don't think i would link the two braking systems together.  it just sound dangerous to me
Title: Re: any pros and cons
Post by: dgyver on February 26, 2008, 10:45:05 AM
Quote from: mach1 on February 26, 2008, 07:18:38 AM
I dont lock the rear brake, I dont even use a rear brake  (no brake pedal) I want to have a rear brake handle on my bars for wheelies( :icon_rolleyes:) yeah I know lame but ive seen it done on super bikes

Get a thumb brake or use a second m/c.
Title: Re: any pros and cons
Post by: mach1 on February 26, 2008, 07:02:53 PM
where can I get one of those Dgyver? Im not running a rear brake lever cuz my rearsets dont have a bracket for the MC
Title: Re: any pros and cons
Post by: spc on February 26, 2008, 07:21:32 PM
Hit one of the stunter forums.  You could mod a hand brake setup from a dirt bike to do it.
Title: Re: any pros and cons
Post by: dgyver on February 26, 2008, 09:22:22 PM
Quote from: mach1 on February 26, 2008, 07:02:53 PM
where can I get one of those Dgyver? Im not running a rear brake lever cuz my rearsets dont have a bracket for the MC

http://stores.sportbiketrackgear.com/Categories.bok?category=BRAKES%3AGP+Tech+thumb+brakes

google.com works great.


Title: Re: any pros and cons
Post by: spc on February 26, 2008, 09:31:16 PM
Hit ebay, not a lot in auction but a ton in stores.
Title: Re: any pros and cons
Post by: erbilabuc on February 26, 2008, 09:54:32 PM
Quote from: mach1 on February 26, 2008, 07:18:38 AM
I dont lock the rear brake, I dont even use a rear brake  (no brake pedal) I want to have a rear brake handle on my bars for wheelies( :icon_rolleyes:) yeah I know lame but ive seen it done on super bikes

way off topic here but: how easy is it to do a wheelie with the 14t sprocket? Power ups or clutch ups? Did you stiffen the front end at all?
Title: Re: any pros and cons
Post by: mach1 on February 26, 2008, 10:58:43 PM
Clutvh ups and no. Its not hard if your practice but Im still not able to ride them out yet Ill wait for the 45t rear sprocket for that. :thumb: