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Renton |
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Renton World Chat Champion
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andym |
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andym World Chat Champion
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Renton |
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Renton World Chat Champion
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RhynoCZ |
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RhynoCZ Super Spammer
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Renton |
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Renton World Chat Champion
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Tankie |
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Tankie Crazy Courier
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RhynoCZ |
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RhynoCZ Super Spammer
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Posted: 10:50 - 10 Sep 2017 Post subject: |
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By what you've described, I would definitely check the bearings there as well. You're going to have to lift the bike though, the front wheel off the ground and you can not lift it by the forks. The whole front end must be lose.
When the bike sits on the ground or you lift it by the forks, you can't tell the bearings are going bad, untill they are in a really horrible condition.
Also do as Tankie says, check everything is tight. ____________________ '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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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 12:13 - 10 Sep 2017 Post subject: |
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I've also had this happen on bikes with badly feathered front tyres.
Also on bikes with a sticky brake piston causing the pad to wobble back and forth. Particularly the leading one (the one the disc passes under first in normal rotation). It's one of the reasons most 2-pot callipers have a larger piston on the leading edge of the pad. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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MCN |
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MCN Super Spammer
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RhynoCZ |
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RhynoCZ Super Spammer
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Posted: 18:13 - 10 Sep 2017 Post subject: |
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Stinkwheel got me thinking and it could be your front tyre. I remember my mate had terrible front tyre on his 919RR, the bike would go alright, but during braking the front end felt like you were riding on the cobble stones.
Anyway, if you decide to lift the front end, use the paddock stand to support the back first, that'll give the motorcycle more lateral stability. I learned this the hard way when I was lifing a motorcycle with a car jack placed under the engine. Everything went alright, but then a slight lateral movement and the bike went down. I was working around the front end, so I grabed it before it fell down (extra human power activated, I felt like the mama bear when someone threatens her baby bears) and it didn't touch the ground, uff. My mate then jump to me and helped me to lift the bike again.
So use the paddock stand at the back, then either lift the bike by the engine with a car jack (a piece wood between the jack and the engine would be nice)OR you may as well lift it by the frame to the ceiling of your garage. I did both and I perfer the jack under the engine method. ____________________ '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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MarJay |
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MarJay But it's British!
Joined: 15 Sep 2003 Karma :
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Renton |
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Renton World Chat Champion
Joined: 29 Sep 2008 Karma :
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Posted: 21:41 - 10 Sep 2017 Post subject: |
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Thanks for all the replies
I'm guessing it's not tyres, as I got the bike with BT016's and have since been running two sets of M7RR's and the problem has persisted throughout.
Thanks MarJay for the alternative way to check disk run out (I didn't really want to pay out for a dial gauge that I may only use once or twice.
I have an Abba stand with front lift arm, so I can check for movement with the head stock bearings etc.
But any ideas why the problem may be so prominent only in wet weather? It is noticeable during normal weather conditions, but only under heavy breaking. During the rain yesterday, it felt so bad even stopping at traffic lights that I thought my front was about to give way. ____________________ This is my motorcycle. There are many others like it, but this one is mine.
Without me, my motorcycle is useless. Without my motorcycle, I am useless. |
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Luckyfish13 |
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Luckyfish13 Renault 5 Driver
Joined: 30 Nov 2015 Karma :
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Old Thread Alert!
The last post was made 6 years, 219 days ago. Instead of replying here, would creating a new thread be more useful? |
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