125cc giovanni dirt bike, shifting, clutch???

Jpratt · 06-12-2009, 08:32 PM

My 125cc giovanni dirt bike sometimes lets me shift without using the clutch while i am riding it, is there a way to fix this?

suprf1y · 06-12-2009, 08:53 PM

Thats normal.

Jpratt · 06-12-2009, 09:02 PM

well isnt it wearing away the clutch then??
if it does it then what is the point of having the clutch??

suprf1y · 06-12-2009, 11:02 PM

It has nothing to do with the clutch, and no, it won't wear it out.
Bike trans can be shifted without the clutch.

Jpratt · 06-12-2009, 11:07 PM

ok then, i was just wondering because it seems quite difficult sometimes to get the bike in neutral...

Weldangrind · 06-13-2009, 12:26 AM

Quote:

Originally Posted by Jpratt

ok then, i was just wondering because it seems quite difficult sometimes to get the bike in neutral...

They're all like that. Switch to synthetic motorcycle oil to minimize the problem.

The point of the clutch is starting and stopping. Once you're underway, the clutch isn't necessary.

Jpratt · 06-13-2009, 10:16 AM

what type of oil should i use then???
i cant find it in the manual.

forchetto · 06-13-2009, 10:43 AM

Oil 10w-40 semi or fully synthetic, but no "fuel saving", "energy conserving" or "low friction" type oil as they're not suitable for wet clutches.

Lots of folk change gear without the clutch. Only works properly on upward changes though. The technique is to apply pressure to the gear lever as in preparing to swap cogs and then relieve the torque holding the gearbox cogs in hard mesh momentarily. The next gear will slip in.
To achieve the load or torque relief you only have to shut the throttle an instant or if you have an easily operated kill button (not rocker switch), press that for an instant.

Jpratt · 06-13-2009, 10:58 AM

so the oil that comes in the bike is junk??

suprf1y · 06-13-2009, 11:50 AM

Definitely.

Get some mobil 1, amsoil, or even castrol 10w40 motorcycle oil.
The castrol is available at walmart for $4, the others are synthetic, and about $10/L

AZ200cc · 06-13-2009, 08:36 PM

I just use good ol valvoline for motorcycles with wet clutch protection, I know the other oils are good but this has never let me down yet.

Jpratt · 06-13-2009, 09:51 PM

well i got synthetic oil, put about 1/2 a liter in and adjusted the clutch a bit and now it shifts nicely.

TurboT · 06-14-2009, 03:42 AM

One (me) wonders how you would notice you can shift gears without the clutch? Not something I would try myself on my YZ. Especially when I have it spooled up I'd much rather hit the clutch than click the shifter "just to see what happens" !!

I do know that a lot of manual trans cars/trucks can shift without the clutch though. Had an old 1980 Dodge I used to shift without the clutch regularly. Rule of thumb for me there was about 1000 rpm lower than when you pulled out of gear it would go into gear, but more of a feel thing. That I didn't care about breaking as much as my bike though!
Slant 6 leaning tower of power.

Jim · 06-14-2009, 04:46 AM

You can shift anything without a clutch, atv, bike, truck, car... It's not always a good idea though...

TurboT · 06-14-2009, 04:19 PM

Quote:

Originally Posted by Jim

You can shift anything without a clutch, atv, bike, truck, car... It's not always a good idea though...

I tend to agree!

06-12-2009, 08:32 PM	#1
Jpratt Join Date: Jun 2009 Posts: 37	125cc giovanni dirt bike, shifting, clutch??? My 125cc giovanni dirt bike sometimes lets me shift without using the clutch while i am riding it, is there a way to fix this?
	0

06-13-2009, 10:43 AM	#8
forchetto Join Date: Jul 2008 Location: Gijon, Asturias,Northern Spain Posts: 396	Oil 10w-40 semi or fully synthetic, but no "fuel saving", "energy conserving" or "low friction" type oil as they're not suitable for wet clutches. Lots of folk change gear without the clutch. Only works properly on upward changes though. The technique is to apply pressure to the gear lever as in preparing to swap cogs and then relieve the torque holding the gearbox cogs in hard mesh momentarily. The next gear will slip in. To achieve the load or torque relief you only have to shut the throttle an instant or if you have an easily operated kill button (not rocker switch), press that for an instant. __________________ Jincheng Monkey JC50Q-7 (two of them) Skyteam Dax replica ST110-6 (two of them) Zongshen ZS125-43 Qingqi QM200GY-BA Super Motard Yamaha Virago XV1100 Triumph Bonneville SE Qingqi QM110GY PGO Bug rider 250 Buggy
	0

06-13-2009, 08:36 PM	#11
AZ200cc Join Date: Apr 2007 Location: Show Low Arizona Posts: 2,889	I just use good ol valvoline for motorcycles with wet clutch protection, I know the other oils are good but this has never let me down yet. __________________ <br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90
	0

06-14-2009, 03:42 AM	#13
TurboT Join Date: Sep 2008 Location: Surrey, B.C., Canada Posts: 2,185	One (me) wonders how you would notice you can shift gears without the clutch? Not something I would try myself on my YZ. Especially when I have it spooled up I'd much rather hit the clutch than click the shifter "just to see what happens" !! I do know that a lot of manual trans cars/trucks can shift without the clutch though. Had an old 1980 Dodge I used to shift without the clutch regularly. Rule of thumb for me there was about 1000 rpm lower than when you pulled out of gear it would go into gear, but more of a feel thing. That I didn't care about breaking as much as my bike though! Slant 6 leaning tower of power. __________________ My Blogs: Chinese Motorcycle Blog A Man's Blog
	0

06-14-2009, 04:46 AM	#14
Jim Join Date: Mar 2007 Location: Abbotsford, BC, Canada Posts: 4,880	You can shift anything without a clutch, atv, bike, truck, car... It's not always a good idea though... __________________ "Be excellent to each other" "We are all human. Let's start to prove it!"
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06-12-2009, 08:53 PM	#2
suprf1y Join Date: Oct 2007 Location: SW Ontario Posts: 408	Thats normal.
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06-12-2009, 09:02 PM	#3
Jpratt Join Date: Jun 2009 Posts: 37	well isnt it wearing away the clutch then?? if it does it then what is the point of having the clutch??
	0

06-12-2009, 11:02 PM	#4
suprf1y Join Date: Oct 2007 Location: SW Ontario Posts: 408	It has nothing to do with the clutch, and no, it won't wear it out. Bike trans can be shifted without the clutch.
	0

06-12-2009, 11:07 PM	#5
Jpratt Join Date: Jun 2009 Posts: 37	ok then, i was just wondering because it seems quite difficult sometimes to get the bike in neutral...
	0

06-13-2009, 10:16 AM	#7
Jpratt Join Date: Jun 2009 Posts: 37	what type of oil should i use then??? i cant find it in the manual.
	0

06-13-2009, 10:58 AM	#9
Jpratt Join Date: Jun 2009 Posts: 37	so the oil that comes in the bike is junk??
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06-13-2009, 11:50 AM	#10
suprf1y Join Date: Oct 2007 Location: SW Ontario Posts: 408	Definitely. Get some mobil 1, amsoil, or even castrol 10w40 motorcycle oil. The castrol is available at walmart for $4, the others are synthetic, and about $10/L
	0

06-13-2009, 09:51 PM	#12
Jpratt Join Date: Jun 2009 Posts: 37	well i got synthetic oil, put about 1/2 a liter in and adjusted the clutch a bit and now it shifts nicely.
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