Help & FAQs    Search BCF    Members    Groups    Events Calendar
Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


Changing Gear

 Reply to topic
Bike Chat Forums Index -> New Bikers
View previous topic : View next topic  
Author Message

veeeffarr
Super Spammer



Joined: 22 Jul 2004
Karma :
PostPosted: 13:58 - 09 Aug 2005    Post subject: Changing Gear Reply with quote
Hi, I have a 2001 CG125 and I notice sometimes when letting the clutch out in first I sometimes get a horrible crunching noise which goes if I pull in and let the clutch out again... Only done 300 miles on it since I got it at 3800 miles, haven't fucked it up have i?

Cheers,

Toby
 Back to top
View user's profile Send private message You must be logged in to rate posts

map
Mr Calendar



Joined: 14 Jun 2004
Karma :
PostPosted: 14:57 - 09 Aug 2005    Post subject: Reply with quote
Not a lot of info to go on but here's some thoughts...

The CG125 isn't the most modern of kit and has been around long enough not to have any major inherent flaws, so...

Arrow Is clutch cable running freely? Any snags? Check bite point. Could lube to make sure.
Arrow Assuming bike new to you then recent oil change? If so did you use synthetic or semi-synth? Could find the older engine design of the CG prefers semi-synthetic oil. If no oil change then I'd do it for peace of mind.

If the crunching is when you select first then...
Arrow Any damage to the selector pedal / linkage?
Arrow Are you trying to select first with high revs?
...although would expect more of a graunching (is that a word?) sound

...sorry if this doesn't help, just some ideas that I would check first.
____________________
...and the whirlwind is in the thorn trees, it's hard for thee to kick against the pricks...
Gibbs, what did Duckie look like when he was younger? Very Happy
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts

veeeffarr
Super Spammer



Joined: 22 Jul 2004
Karma :
PostPosted: 15:05 - 09 Aug 2005    Post subject: Reply with quote
Hi,

I think it's because I try and rev too high, because it's when I am trying to pull of quite quickly that it occurs.

I havent changed the oil yet, it was done before I bought it.

Cheers,

Toby
 Back to top
View user's profile Send private message You must be logged in to rate posts

Thedan
Derestricted Danger



Joined: 14 Jul 2005
Karma :
PostPosted: 15:09 - 09 Aug 2005    Post subject: Reply with quote
I have a honda cg125 2000 model and i also get this i thought i might have broken it aswell. I have also only had the bike for a while it was on 2506 miles when i got it and have since done only 200 miles.

When the bike has been left for a while half a day or over night when i start the bike in the morning and select first gear the bike clunks/clicks and then goes forward on the suspension quite violent.

I have changed the oil recently with semi synth.

Many Thanks

Dan
 Back to top
View user's profile Send private message You must be logged in to rate posts

map
Mr Calendar



Joined: 14 Jun 2004
Karma :
PostPosted: 15:47 - 09 Aug 2005    Post subject: Reply with quote
Some info from my head and that of others...
Thedan wrote:
...when i start the bike in the morning and select first gear the bike clunks/clicks...

That'd be the clutch plates sticking together and not completely releasing when you pull in the clutch. The oil between the clutch plates transmits a little motion which means the input shaft can be turning slightly. So you get a clunk (and maybe forward motion if turning a bit more). Normal for many motorcycles, especially on startup when the oil is doing funny things. May be worse at low temperature as oil will be thicker. Could try fully synth oil as this thinner over greater temperture range. However, fully synthetic could cause problems with the clutch, either slippage or greater wear.

Try working the clutch lever a few times before moving off, and then select first, as this might help minimise it.

I shouldn't worry about it, just ride Very Happy.
____________________
...and the whirlwind is in the thorn trees, it's hard for thee to kick against the pricks...
Gibbs, what did Duckie look like when he was younger? Very Happy
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts

Josh|RD125LC
World Chat Champion



Joined: 08 Sep 2004
Karma :
PostPosted: 23:25 - 09 Aug 2005    Post subject: Reply with quote
My Honda 50 does exactly the same mate. When letting the clutch out slowly, or just sitting on a hill and letting it out a bit to act as a brake, it does 'crunch' sometimes, but I think 'clunk' is more of a better description for the noise. Is it a 'clunk' or 'crunch'?
____________________
Honda MBX50 | Yamaha RD125LC | Suzuki RG125F Lucky Strike | Suzuki GSF600S
RD125LC Pictures
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts

jimster
Spanner Monkey



Joined: 16 Mar 2005
Karma :
PostPosted: 00:21 - 10 Aug 2005    Post subject: Reply with quote
Maybe the clutch is a bit worn? Make sure you warm the bike up before using it, and if you want it to last better, don't do high-rev starts...! Rolling Eyes

PS I'd also change the oil, unless you know for sure when it was last changed. And don't use semi-synth oil (apparently it causes clutch slip)
____________________
Current: Yamaha Diversion XJ900
Previous: Yamaha Diversion 600cc, Piaggio Zip 50cc, Honda CG125-W, Siamoto Caddy 50cc moped
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

map
Mr Calendar



Joined: 14 Jun 2004
Karma :
PostPosted: 00:28 - 10 Aug 2005    Post subject: Reply with quote
jimster wrote:
...don't use semi-synth oil (apparently it causes clutch slip)

Read my post above. Full synthetic oil is most likely to cause clutch slip. This is mainly due to the additives that, well, make it slippier Wink. The other arguement is that if it doesn't do that then because it's slippier there's less of it between the plates and therefore they'll wear out quicker.

Full synth oil is ok on bikes designed to run on the stuff, engines, clutch etc. made to the job and tested to perform with the oil. Older, and less powerful machinery is okay with the semi-synth. You'd have to be an enthusiast to know where to put mineral oil (even that's not mineral oil anymore).

HTH Thumbs Up
____________________
...and the whirlwind is in the thorn trees, it's hard for thee to kick against the pricks...
Gibbs, what did Duckie look like when he was younger? Very Happy
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts

jimster
Spanner Monkey



Joined: 16 Mar 2005
Karma :
PostPosted: 00:54 - 10 Aug 2005    Post subject: Reply with quote
map wrote:
Read my post above. Full synthetic oil is most likely to cause clutch slip.

You'd have to be an enthusiast to know where to put mineral oil (even that's not mineral oil anymore).


I did read your post - Rolling Eyes I think that as 125 bike engines were designed to be used with mineral oil, mineral oil will be just fine.

But I'm just parroting back what other people have said, so it's a bit pointless arguing about it Smile
____________________
Current: Yamaha Diversion XJ900
Previous: Yamaha Diversion 600cc, Piaggio Zip 50cc, Honda CG125-W, Siamoto Caddy 50cc moped
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

mchaggis
World Chat Champion



Joined: 10 May 2004
Karma :
PostPosted: 02:31 - 10 Aug 2005    Post subject: Reply with quote
I've been running mine on 60p a litre oil with nothing obviously wrong. It hasn't complained at all. Laughing

Alternatively Castrol GTX 10W40 (not magnatech) will do the job just fine.
____________________
I must not be a troll...
Mmmm, Guinness
Discovering the delights of Hammerite and a 3/4" brush. Very Happy
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts
Old Thread Alert!

The last post was made 20 years, 251 days ago. Instead of replying here, would creating a new thread be more useful?
  Display posts from previous:   
This page may contain affiliate links, which means we may earn a small commission if a visitor clicks through and makes a purchase. By clicking on an affiliate link, you accept that third-party cookies will be set.

Post new topic   Reply to topic    Bike Chat Forums Index -> New Bikers All times are GMT + 1 Hour
Page 1 of 1

 
 You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Read the Terms of Use! - Powered by phpBB © phpBB Group
 
Debug Mode: ON - Server: birks (www) - Page Generation Time: 0.05 Sec - Server Load: 0.44 - MySQL Queries: 13 - Page Size: 69.55 Kb