Gearbox woes

Forum rules
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
Post Reply
Rustyp81
Settled in member
Posts: 102
Joined: Sun Apr 25, 2010 9:15 pm
Bike owned: Cagiva Mito. VFR400R NC30
Location: Worcester
Gearbox woes

Post by Rustyp81 »

Hi all,

I'm have problems with my nc30...again! Basically it wont go into gear. When i pull the clutch cable in and try and knock it down into first i get a grinding/crunch noise and it feels like it goes in and the bike moves forward slightly but when you up the revs it doesn't pull away. So far i have tried the following.

Changed the clutch plates, making sure i started and ended with friction plates
changed the clutch basket
changed the clutch cable.
replaced all external gearbox parts

Ive started it up with the clutch cover off and the clutch is spinning and when i pull the clutch leaver the clutch appears to move outwards.

Is there anything else i can try or does it sound like the box is knacked??

Cheers

Russ
User avatar
CMSMJ1
Moderators
Moderators
Posts: 7161
Joined: Thu May 01, 2008 9:42 am
Bike owned: NC30-No9
Location: Chesterfield, United Kingdom
Re: Gearbox woes

Post by CMSMJ1 »

Does it not go into gear without the engine running?

What happened with it?

Are you happy that the clutch is working? When you pull the lever the plates are pushed apart - this is good.

Why did you replace the clutch? Why the basket? Is the basket definitely seated correctly?

get some pics up dude...
IMPERATOR REX ANGLORUM

The V4 is the law..

NC30 - No9 - my old mate
Rustyp81
Settled in member
Posts: 102
Joined: Sun Apr 25, 2010 9:15 pm
Bike owned: Cagiva Mito. VFR400R NC30
Location: Worcester
Re: Gearbox woes

Post by Rustyp81 »

CMSMJ1 wrote:Does it not go into gear without the engine running?

What happened with it?

Are you happy that the clutch is working? When you pull the lever the plates are pushed apart - this is good.

Why did you replace the clutch? Why the basket? Is the basket definitely seated correctly?

get some pics up dude...

When the engine is off, i can put it into first, it feels like it goes into gear but i can still rotate the back wheel when it's on the paddock stand. I have no problem locating neutral if that make any difference?

Changed the plates 'cos they were worn, but this problem happened before i replaced the clutch. The clutch moves Outwards, Well the retainer plate(?) does, I'll check the actual plates when i go down the garage.

What should i be taking pics of??

Thanks for your help :)

Russ
Neosophist
Moderators
Moderators
Posts: 8172
Joined: Fri Jul 04, 2008 1:01 pm
Bike owned: CBR954
Re: Gearbox woes

Post by Neosophist »

Is the clutch cable adjusted out enough and actuating the push-rod?

Sound like the clutch isn't dis-engaging.

If you get the back wheel up. i.e paddockstand...

put your foot on the gearlever to try for first and crank the starter motor does it slot into first?
xivlia wrote:i dont go fast on this bike so really do not need a rear brake.. /
vic-vtrvfr wrote:Ask xivlia for help, he's tackled just about every problem u could think of...
Rustyp81
Settled in member
Posts: 102
Joined: Sun Apr 25, 2010 9:15 pm
Bike owned: Cagiva Mito. VFR400R NC30
Location: Worcester
Re: Gearbox woes

Post by Rustyp81 »

Right, just been out to the bike and it appears that the plates are not moving, took a video rather than trying to describe it lol

http://www.youtube.com/watch?v=OB6xI6OvKnk

Image


I couldn't try your suggestions Neosophist as the battery was dead as. I've brought it back with me and i'll leave it on charge for a couple of hours and then go back and try again.

Any ideas why this is happening i re-built the clutch a la the haynes??

Thanks for you help so far

Russ
Neosophist
Moderators
Moderators
Posts: 8172
Joined: Fri Jul 04, 2008 1:01 pm
Bike owned: CBR954
Re: Gearbox woes

Post by Neosophist »

That looks fine to me, plates won't move much, they just slip when the pressure is taken off them.

Try my suggestion of getting it into gear when you charge the battery then try engaging the clutch and seeing what happens :-)
xivlia wrote:i dont go fast on this bike so really do not need a rear brake.. /
vic-vtrvfr wrote:Ask xivlia for help, he's tackled just about every problem u could think of...
Rustyp81
Settled in member
Posts: 102
Joined: Sun Apr 25, 2010 9:15 pm
Bike owned: Cagiva Mito. VFR400R NC30
Location: Worcester
Re: Gearbox woes

Post by Rustyp81 »

went back up, realised i hadn't put the gear selection/ outer gearbox back together. Anyhoo, started to put it back together and theres no movement in the selector crown thingy, as bellow

http://www.youtube.com/watch?v=7d0PHvOud7s

Doesn't seam right to me, and thought i would ask here before putting it all back together and turning the engine over.

Cheers

Russ
Neosophist
Moderators
Moderators
Posts: 8172
Joined: Fri Jul 04, 2008 1:01 pm
Bike owned: CBR954
Re: Gearbox woes

Post by Neosophist »

What is that in the video, I can't quite make it out.. looks like the front sprocket?
xivlia wrote:i dont go fast on this bike so really do not need a rear brake.. /
vic-vtrvfr wrote:Ask xivlia for help, he's tackled just about every problem u could think of...
Rustyp81
Settled in member
Posts: 102
Joined: Sun Apr 25, 2010 9:15 pm
Bike owned: Cagiva Mito. VFR400R NC30
Location: Worcester
Re: Gearbox woes

Post by Rustyp81 »

My technical knowledge is shocking, so I'll use pictures to make it easier for me lol :)

It's this
Image

which goes on here
Image

Like this
Image

But there's very little movement in it as in the video, Is it just stuck halfway between gears??

Thanks for your help this far

Cheers

Russ
Neosophist
Moderators
Moderators
Posts: 8172
Joined: Fri Jul 04, 2008 1:01 pm
Bike owned: CBR954
Re: Gearbox woes

Post by Neosophist »

Oh the Star!

You won't turn that by hand :D

Why'd you take that off :O

http://images.cmsnl.com/img/partslists/ ... 0_c9f7.gif

Have a look there.. assembly information
xivlia wrote:i dont go fast on this bike so really do not need a rear brake.. /
vic-vtrvfr wrote:Ask xivlia for help, he's tackled just about every problem u could think of...

Post Reply