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Rough ride possible causes?

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Dave M
Scooby Slapper



Joined: 03 May 2013
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PostPosted: 22:26 - 03 Oct 2014    Post subject: Rough ride possible causes? Reply with quote
Need advice again please Confused

Bike is a Yamaha yzf r125 2010 model. Bought this last week and rode it home from Doncaster. I've noticed some rough riding and I can feel every little bump on the road. What could be the main cause/s? On the way home I pulled into a garage to check tyre pressures which were way above recommended of 27 front 29 rear. They had nearly 40 in each Shocked I was hoping it might help but still the same. This bike has had a lowering kit fitted by previous owner but don't know if this could be anything to do with it? The forks compress and return freely and no signs of any oil leaking from seals. No signs of front or rear end damage at all as far as I can see. This bike is over 4 year old so assuming it's never had a fork oil change. Could it be this?
I thought it would do no harm to realign front end while on a rear stand as I think it looks like it's out of alignment (see pic) but it still looks the same after I've done that. Pic is poor sorry but iphone is shite for taking pics. If needed I will try to take a better one. Thanks in advance as usual!

https://i1214.photobucket.com/albums/cc487/weedave1/Mobile%20Uploads/AB647C12-A8BC-41C8-8BEB-71A55D74A391.jpg
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Nobby the Bastard
Harley Gaydar



Joined: 16 Aug 2013
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PostPosted: 23:01 - 03 Oct 2014    Post subject: Reply with quote
The obvious thing to point out is that it's got sporty pretentions .

Sports bikes (especially small, light ones) tend to have hard suspension. There's no weight to the bike to use inertia to action the suspension instead of throwing the bike up or down.

Have you tried another bike of the same model to compare?
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Dave M
Scooby Slapper



Joined: 03 May 2013
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PostPosted: 23:29 - 03 Oct 2014    Post subject: Reply with quote
Nobby the Bastard wrote:
The obvious thing to point out is that it's got sporty pretentions .

Sports bikes (especially small, light ones) tend to have hard suspension. There's no weight to the bike to use inertia to action the suspension instead of throwing the bike up or down.

Have you tried another bike of the same model to compare?


Yes I had an 08 model about 2 years back and can't remember it being this bad? Bike wasn't maintained well at all by previous owner so I'm just going through everything to make sure it's ok but a bit concerned about this at the moment. New fork oil will be next on list. Thanks.
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RhynoCZ
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Joined: 09 Mar 2012
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PostPosted: 09:19 - 04 Oct 2014    Post subject: Reply with quote
Have you checked the rear shock? I'm 100% sure you can adjust the spring compression/pre-load there. It also makes the ride hard and bumpy, if over-done. Thumbs Up
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Taught2BCauti...
World Chat Champion



Joined: 12 Jan 2012
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PostPosted: 16:25 - 04 Oct 2014    Post subject: Reply with quote
Garage tyre pumps can be ridiculously inaccurate - but I would suggest removing the lowering kit and starting your diagnosis from a factory standard configuration.
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Dave M
Scooby Slapper



Joined: 03 May 2013
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PostPosted: 21:02 - 04 Oct 2014    Post subject: Reply with quote
Cheers for the replies. How difficult would it be to remove lowering kit? What stand would I need? I have an Abba stand if that's any use. I've not had a look at the rear shock yet. Here is a breakdown of it.

https://www.yamahamotorcyclespares.co.uk/genuineparts/9472/21/yamaha%20yzfr125/rear%20suspension?uID=0
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Vincent This post is not being displayed because the poster is banned. Unhide this post / all posts.

iooi
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Joined: 14 Jan 2007
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PostPosted: 08:39 - 05 Oct 2014    Post subject: Reply with quote
Quote:
The forks compress and return freely and no signs of any oil leaking from seals


So that could say no oil in them.....

Start with the basics and work from there. It could be as simple as, new to you, bike and that how it rides.

Don't go changing loads of stuff just because it does not feel right. Till you have more than 1 ride and " I've noticed some rough riding and I can feel every little bump on the road."

Lowering kit. Do you need it on the bike? If not then change it back to standard. If previous owner has done the job right they will also have lowered the front as well. So that will need lifting again.
I would not expect that kit to make the ride any different. You still have the same amount of suspension movement.
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Old Thread Alert!

The last post was made 11 years, 85 days ago. Instead of replying here, would creating a new thread be more useful?
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