front brakes sticking - Suzuki GSXS1000 Forum
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post #1 of 12 Old 03-24-2019, 09:37 AM Thread Starter
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front brakes sticking

anybody had problems with front brakes sticking on after fitting aftermarket levers?
ive just fitted titax levers (chose those because ive used them before on my gsxr & they seemed good quality-better than cheap Chinese crap & better value than the expensive ones).
its a good job I rode steady & not too far because the brakes stuck on & got hotter until the wheel locked & wouldn't move. the only way I could get home was to remove the pivot bolt on the lever to release the pressure & ride with no front brake.
I know its not the calliper pistons cause they've just been cleaned & move ok.
on the lever theres a barrel with a blind hole into which the master cylinder push rod goes & the only thing I can think of is that this isn't deep enough therefore applying pressure to the brakes even without the lever being pulled.
I can deepen the hole by a mm or so to try.
ive sent an email to titax explaining this could be a very serious & possible lethal issue but haven't heard back yet.
any suggestions?
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post #2 of 12 Old 03-24-2019, 10:37 AM
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Are you sure the pin was in the hole?
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post #3 of 12 Old 03-24-2019, 11:04 AM Thread Starter
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yep, it wouldn't go on if not.
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post #4 of 12 Old 03-24-2019, 11:11 AM Thread Starter
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forgot to mention that you have to apply a bit of pressure onto the push rod even with the std lever to get the pivot bolt in & this doesn't seem any more with the titax lever. brakes bled & seemed ok in the garage. problem only occurs after using a few times. now im really worried about riding the bike, even with the std lever. keep thinking its going to lock up.
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post #5 of 12 Old 03-24-2019, 11:47 AM
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I recall reading something about this before. As I recall, the person found out the plunger on the bee lever was very slightly larger diameter than stock, and was sticking in the channel.

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post #6 of 12 Old 03-24-2019, 11:59 AM Thread Starter
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there is no plunger or channel on the titax lever. just a barrel with a blind hole that operates the master cylinder push rod.
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post #7 of 12 Old 03-24-2019, 01:21 PM
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Originally Posted by petes View Post
there is no plunger or channel on the titax lever. just a barrel with a blind hole that operates the master cylinder push rod.
Ah, sorry, maybe I misremembered, or was thinking of a different bike. Good luck, and be safe

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post #8 of 12 Old 03-24-2019, 03:21 PM
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Did you put the stock lever back on and try? You said to get home, you had to remove the pivot bolt, so seems like the problem is in the lever, not the brake system.
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post #9 of 12 Old 03-25-2019, 09:16 AM
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I had same near lock up experience with aftermarket lever install. The issue is the lever barrel + brake piston rod contact geometry. If the piston is unable to completely return to disengaged position (for whatever reason), a small amount of disc drag will result in accumulated heat and friction and finally lock up. I posted on this earlier and there are YouTube videos - search “brake lever crash.”
I am paranoid now and am sticking with stock levers. I also changed my pads and brake fluid fearing that the heat compromised those components. Discs seem ok. Please be very cautious.
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post #10 of 12 Old 03-25-2019, 03:00 PM
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I just saw this video on youtube that perhaps addresses your issue; it's a bit of an eye opener to be honest.

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