Hydraulic Clutch Conversion Basics - Write-up Added

Any topic relating to the FZR/YZF (UK) or motorcycling in general.

Moderators: Site Director, FZR Forum Moderators

User avatar
yamaha_george
5000+ Posts
5000+ Posts
Posts: 5853
Joined: Fri May 09, 2008 8:46 am
Location: west london UK
Contact:

Re: Hydraulic Clutch Conversion Basics - Write-up Added

Postby yamaha_george » Thu Dec 16, 2010 1:24 pm

trifgeorge wrote:I got it george. but what if i shorten the spring that is inside? wouldn't that make it squirt out more liquid?

TG,
Lengthening the actual stroke will help BUT watch out for the return & feed holes and the length apart still working, maybe a shortened piston itself ??????

User avatar
trifgeorge
Level 2.0
Level 2.0
Posts: 212
Joined: Sun Jun 21, 2009 2:32 pm
Location: Romania
Contact:

Re: Hydraulic Clutch Conversion Basics - Write-up Added

Postby trifgeorge » Sat Dec 18, 2010 9:24 am

yamaha_george wrote:
trifgeorge wrote:I got it george. but what if i shorten the spring that is inside? wouldn't that make it squirt out more liquid?

TG,
Lengthening the actual stroke will help BUT watch out for the return & feed holes and the length apart still working, maybe a shortened piston itself ??????


ok.switched the slave cylinder with a smaller scooter single cylinder caliper, made a mounting plate and .....it works...sort of. the clutch disengages as soon as i pull in the clutch handle (only needs 1 cm of pull). but the wheel does not move as freely as when the bike is in neutral. is this normal? and the cluch is hard to pull (compared to when the fzr 1000 slave cylinder was used)
Attachments
2-2.jpg
Picture with the lenghtened push rod
1-1.jpg
Picture with the scooter caliper as slave cylinder.
1992 Yamaha FZR 600 3HE with:
GSX600F fully adjustable rebound forks
GSX600F front wheel with full floating disks
Sigma BC 1009 speedometer
YZF 600 Thundercat tank
Red Rizoma like grips
R6 pilot seat
Complete custom made tail with custom made rear seat
Led front and rear signals and tail light
Custom fiberglass electrics box
R6 Voltage regulator
Custom made rearset hangers
Custom made A123 LiFePO4 battery
KOSO mirrors
GSXR600SRAD swingarm-rear wheel assemby with 180/55/17 Michelin Pilot Power 2CT rear tyre
FZR1000 hydraulic clutch
H1 HID
Hand made mirror plates

User avatar
trifgeorge
Level 2.0
Level 2.0
Posts: 212
Joined: Sun Jun 21, 2009 2:32 pm
Location: Romania
Contact:

Re: Hydraulic Clutch Conversion Basics - Write-up Added

Postby trifgeorge » Sat Dec 18, 2010 1:41 pm

got a video up to show you how the rear wheel moves in the first gear.
http://www.youtube.com/watch?v=XwGqUZAXfno
1992 Yamaha FZR 600 3HE with:
GSX600F fully adjustable rebound forks
GSX600F front wheel with full floating disks
Sigma BC 1009 speedometer
YZF 600 Thundercat tank
Red Rizoma like grips
R6 pilot seat
Complete custom made tail with custom made rear seat
Led front and rear signals and tail light
Custom fiberglass electrics box
R6 Voltage regulator
Custom made rearset hangers
Custom made A123 LiFePO4 battery
KOSO mirrors
GSXR600SRAD swingarm-rear wheel assemby with 180/55/17 Michelin Pilot Power 2CT rear tyre
FZR1000 hydraulic clutch
H1 HID
Hand made mirror plates

User avatar
yamaha_george
5000+ Posts
5000+ Posts
Posts: 5853
Joined: Fri May 09, 2008 8:46 am
Location: west london UK
Contact:

Re: Hydraulic Clutch Conversion Basics - Write-up Added

Postby yamaha_george » Sat Dec 18, 2010 4:32 pm

trifgeorge wrote:
ok.switched the slave cylinder with a smaller scooter single cylinder caliper, made a mounting plate and .....it works...sort of. the clutch disengages as soon as i pull in the clutch handle (only needs 1 cm of pull). but the wheel does not move as freely as when the bike is in neutral. is this normal? and the cluch is hard to pull (compared to when the fzr 1000 slave cylinder was used)


TG
now you see what I mean by:-
"The handlebar lever bore & the slave cylinder bore work like gear ratio's in this respect."

User avatar
trifgeorge
Level 2.0
Level 2.0
Posts: 212
Joined: Sun Jun 21, 2009 2:32 pm
Location: Romania
Contact:

Re: Hydraulic Clutch Conversion Basics - Write-up Added

Postby trifgeorge » Sat Dec 18, 2010 5:12 pm

yamaha_george wrote:
trifgeorge wrote:
ok.switched the slave cylinder with a smaller scooter single cylinder caliper, made a mounting plate and .....it works...sort of. the clutch disengages as soon as i pull in the clutch handle (only needs 1 cm of pull). but the wheel does not move as freely as when the bike is in neutral. is this normal? and the cluch is hard to pull (compared to when the fzr 1000 slave cylinder was used)


TG
now you see what I mean by:-
"The handlebar lever bore & the slave cylinder bore work like gear ratio's in this respect."

YG,
Yes, I undestand now. :cheers:
But is one thing that I don't understand. The amount of movement that this slave cylinder is making looks the same as the fzr 1000 one did, and still this one disengages the clutch. And one more question, do you think it's ok for the wheel to spin as hard as is with the clutch pulled in. With the clutch full in, you have to push it a little bit harder at first to make it spin, but as soon as you move it a bit it spins more freely. Also if you keep the clutch pulled in and stop spinning the wheel and then you start spinning it again, it will more freely at the first move as well. Is this good or is this bad?
1992 Yamaha FZR 600 3HE with:
GSX600F fully adjustable rebound forks
GSX600F front wheel with full floating disks
Sigma BC 1009 speedometer
YZF 600 Thundercat tank
Red Rizoma like grips
R6 pilot seat
Complete custom made tail with custom made rear seat
Led front and rear signals and tail light
Custom fiberglass electrics box
R6 Voltage regulator
Custom made rearset hangers
Custom made A123 LiFePO4 battery
KOSO mirrors
GSXR600SRAD swingarm-rear wheel assemby with 180/55/17 Michelin Pilot Power 2CT rear tyre
FZR1000 hydraulic clutch
H1 HID
Hand made mirror plates

User avatar
mrfreeze5
Level 8.0
Level 8.0
Posts: 811
Joined: Thu Jun 12, 2008 6:15 am
Location: Denver, Co

Re: Hydraulic Clutch Conversion Basics - Write-up Added

Postby mrfreeze5 » Sat Dec 18, 2010 8:44 pm

Has the bike been sitting for a while? Sometimes it can bind up a little and stick when its been sitting, and once you break it loose everything kinda drags. Once the bike is started and the oil is moving, and the output shaft spins a few times, it looses up.

User avatar
trifgeorge
Level 2.0
Level 2.0
Posts: 212
Joined: Sun Jun 21, 2009 2:32 pm
Location: Romania
Contact:

Re: Hydraulic Clutch Conversion Basics - Write-up Added

Postby trifgeorge » Sun Dec 19, 2010 2:15 am

Yes, it has been sitting since September, but i started it like a month ago, but the temp outside and in my garage get as low as -17 C, even lower, and i have 15w50 oil into it.
1992 Yamaha FZR 600 3HE with:
GSX600F fully adjustable rebound forks
GSX600F front wheel with full floating disks
Sigma BC 1009 speedometer
YZF 600 Thundercat tank
Red Rizoma like grips
R6 pilot seat
Complete custom made tail with custom made rear seat
Led front and rear signals and tail light
Custom fiberglass electrics box
R6 Voltage regulator
Custom made rearset hangers
Custom made A123 LiFePO4 battery
KOSO mirrors
GSXR600SRAD swingarm-rear wheel assemby with 180/55/17 Michelin Pilot Power 2CT rear tyre
FZR1000 hydraulic clutch
H1 HID
Hand made mirror plates

User avatar
yamaha_george
5000+ Posts
5000+ Posts
Posts: 5853
Joined: Fri May 09, 2008 8:46 am
Location: west london UK
Contact:

Re: Hydraulic Clutch Conversion Basics - Write-up Added

Postby yamaha_george » Sun Dec 19, 2010 6:06 am

trifgeorge wrote:Yes, it has been sitting since September, but i started it like a month ago, but the temp outside and in my garage get as low as -17 C, even lower, and i have 15w50 oil into it.

TG,
that sounds like oil drag as it is so cold & sticky.When i had to deal with cold auto's I used a lamp to keep the engine block warmer and the oil from getting almost like varnish/treacle

User avatar
trifgeorge
Level 2.0
Level 2.0
Posts: 212
Joined: Sun Jun 21, 2009 2:32 pm
Location: Romania
Contact:

Re: Hydraulic Clutch Conversion Basics - Write-up Added

Postby trifgeorge » Sun Dec 19, 2010 8:50 am

YG,
That calmed me down a bit. Thanks!
1992 Yamaha FZR 600 3HE with:
GSX600F fully adjustable rebound forks
GSX600F front wheel with full floating disks
Sigma BC 1009 speedometer
YZF 600 Thundercat tank
Red Rizoma like grips
R6 pilot seat
Complete custom made tail with custom made rear seat
Led front and rear signals and tail light
Custom fiberglass electrics box
R6 Voltage regulator
Custom made rearset hangers
Custom made A123 LiFePO4 battery
KOSO mirrors
GSXR600SRAD swingarm-rear wheel assemby with 180/55/17 Michelin Pilot Power 2CT rear tyre
FZR1000 hydraulic clutch
H1 HID
Hand made mirror plates


Return to “General Discussion”

Who is online

Users browsing this forum: No registered users and 2 guests