08-14-2015, 10:56 AM | #16 |
Join Date: Jun 2015
Location: Escondido, CA
Posts: 117
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Brie pad
My front brake is pulsating, so I need to contact Ryan to ask for a replacement.
Does the front brake pad need to be replaced at the same time? Wouldn't the Brake pad also have uneven wear due to the faulty rotor? What is the recommended torque for the bolts? Why would I need to replace the bolts? Thanks Dave
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Dave |
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08-14-2015, 12:04 PM | #17 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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Installing the rotor bolts is not a problem. The problem arises while trying to remove the rotor bolts. The bolts are bathed in loctite at the factory, and probably installed with an impact driver. Therefore, it is very easy to strip the Allen key head, which can make the bolt very difficult, or impossible to remove without machine work.
Remove the bolts slowly, and with great caution, taking care not to strip the head. It is recommended to heat very troublesome bolts with a propane torch. After you successfully remove the bolts the first time, subsequent installation and removal of the bolts is an easy process.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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08-14-2015, 12:26 PM | #18 |
Join Date: Nov 2014
Posts: 159
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A number of us have reported brake pulsation. Has anybody made the run-out measurements with dail yet? I can feel the pedal of the rotors just be for coming to a hard stop but no pulsing at speed.
I really do need to find a more aggressive pad, I'm worried my ham fisted braking technique I've developed to stop the RX in a reasonable distance will end in desaster the first time a panic breaking situation arises in my Sprint. |
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09-06-2015, 01:17 AM | #19 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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I didn't measure run-out with a dial indicator. However, I did measure the thickness of my old brake rotor with a micrometer, and I noticed numerous variances in thickness.
After doing some research, I concluded the front brake rotor has the same dimensions as many KTM brake rotors. The only difference is the RX3 brake rotor has larger bolt holes. If one wanted to insert helicoils in the front hub to accept smaller bolts, I'm sure he could switch over to the KTM brake rotor.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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09-06-2015, 01:30 AM | #20 | |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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Quote:
Or is that not possable ? ..
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09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com |
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09-06-2015, 01:38 AM | #21 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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I think you are correct, Pete. Unfortunately, I don't own a drill press, neither do I own good drill bits for cutting hard steel.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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09-06-2015, 01:52 AM | #22 | |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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Quote:
..
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09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com |
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09-06-2015, 02:15 AM | #23 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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Rather than drill the brake rotors every time, I would rather stick with Zongshen rotors, or install helicoils.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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09-06-2015, 02:58 AM | #24 | |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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Quote:
how meany brake rotors do you intend to go though..?
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09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com |
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09-06-2015, 12:07 PM | #25 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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How many do you intend to use?
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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09-08-2015, 01:05 AM | #26 |
Join Date: May 2007
Location: Warshington
Posts: 928
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Spud, I measured thickness on my pulsing front rotor also and found it to be about .005/in variance. Rear one was within .001". Bought a new rotor and surface ground the old one best I could and it made it usable with a very mini pulse feel to it. Keeping the new rotor for later. rj
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09-08-2015, 01:34 AM | #27 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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I'm fairly confident Zongshen does not manufacture brake rotors. I'm pretty sure Zongshen bought these brake rotors from another company, and assembled our shipment of RX3 motorcycles with a bad batch of rotors. Since CSC offers such excellent customer service, replacing a bad brake rotor under warranty is an easy task. Therefore, I am content to stick with the stock brake rotor, since it does a good job when it is within proper specifications.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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09-09-2015, 12:02 AM | #28 |
Join Date: Jul 2015
Location: Milpitas, CA. USA
Posts: 775
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Check your lever.
On the subject of brakes, I noticed that after my first ride the front smelled a bit hot. Since it was only a short, leisurely putt around the neighborhood I though that odd.
Close examination found that the front cylinder mount was too close to the throttle assembly and when released was hitting, not allowing full retraction of the master cylinder piston. Quick little adjustment inboard prevented a possible heating/warping situation. |
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09-09-2015, 01:39 AM | #29 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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That's a very good tip, Jay.
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10-23-2015, 01:49 PM | #30 |
Join Date: Oct 2015
Posts: 321
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So, is there a replacement or compatible part number for the front brake pad?
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