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Author Topic: New levers problem / changing master cylinder  (Read 1261 times)

Riskoe

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New levers problem / changing master cylinder
« on: April 02, 2017, 11:09:37 AM »

Morning folks,

Long story short I purchased some replacement levers from eBay for my 2016 GT125 and the brake does not fit as it is the adjustable type and my front master cylinder is too small to accommodate.

My initial thought is to simply change the master cylinder to one from an adjustable hyo but with my bike being brand new and parts being for the older models, Im wondering if this will be a straight swap?

There is a cable running to it from the front calliper which I want to ensure will fit to a new master cylinder as with buying a new one just simply changing the levers is going to cost me close to 100!

Alternatively are there any other models that have the slimmer levers that will fit a Hyo 125? Suzuki SV for example?
« Last Edit: April 02, 2017, 11:18:06 AM by Riskoe »
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Cloud

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Re: New levers problem / changing master cylinder
« Reply #1 on: April 03, 2017, 07:51:38 AM »


I've seen a few adjustable levers attacked with a Dremel for good results.
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Riskoe

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Re: New levers problem / changing master cylinder
« Reply #2 on: April 06, 2017, 03:38:55 PM »

I might go the dremel route but if I screw it up it's more money. If I buy a bigger master cylinder for adjustable levers will this fit straight on without any drama?
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Cloud

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Re: New levers problem / changing master cylinder
« Reply #3 on: April 06, 2017, 07:42:08 PM »


Dunno about the GT. Nothing else fits on the R.
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Riskoe

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Re: New levers problem / changing master cylinder
« Reply #4 on: April 07, 2017, 01:15:39 PM »

So a reservoir which houses adjustable levers won't fit on my clip one on a gt125r?
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Cloud

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Re: New levers problem / changing master cylinder
« Reply #5 on: April 07, 2017, 06:05:50 PM »


I think almost anything will go onto the Comet.

Nothing will go onto the R except what's there.
Any other design will foul fairing at full-right steer, and foul the dash binnacle at full-left steer, or simply be far far to small to drive the pistons.
« Last Edit: April 07, 2017, 06:07:55 PM by Cloud »
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Riskoe

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Re: New levers problem / changing master cylinder
« Reply #6 on: April 08, 2017, 10:44:51 AM »

Sorry I may have made this complicated haha

I can purchase a hyosung reservoir that houses adjustable levers from a 250 and that will fit I assume being an OEM part.
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Cloud

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Re: New levers problem / changing master cylinder
« Reply #7 on: April 08, 2017, 06:37:23 PM »


I wasn't helping.

Yes, if you can find one from a GTR, it'll fit. Age irrelevant.

No idea what the cable is though. There should be two wires (+ and -) for the brake lamp. Unless you have ABS.
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Riskoe

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Re: New levers problem / changing master cylinder
« Reply #8 on: April 11, 2017, 11:10:56 AM »

I can buy one from a twin disk model will this still work on my single disk set up?
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Cloud

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Re: New levers problem / changing master cylinder
« Reply #9 on: April 11, 2017, 01:44:49 PM »


Yes, but don't.

You know Hyosung have a thing about recycling parts, using the same engines for different bikes, using the same fairings and stuff for the 650 as the 125, and basically having as many parts-in-common as absolutely possible. There's a reason they went to the trouble of designing, engineering, and manufacturing the single-disc specific master. It increases necessary torque to apply force while robbing you of feel and lever travel range. You could certainly argue that the difference between the two isn't very large, but with a caliper as blunt and un-precise as the standard TCTC you get on the Hyosung, it still makes it possible and easy to over-brake for the road conditions, grabby at high-speed, and all round a little more worrying to use, detracting from the riding experience.

I had a lot of problems with my brakes in the first couple of years I owned it, and the solution was never to change the master.
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