Too much torque, clutch keeps slipping

[Vmax1700@]

Seems it ain’t possible to fix the slipping clutch of my slightly modified Vmax Gen2. 200hp version (even “a bit” more thanks to some modifs

Installed new original clutch (9 friction plates, 9 clutch plates). Installed EBC Diaphragm. Semi-synthetic oil.
Clutch keeps slipping when accelerating in 3rd, 4rd and 5th.

All advice welcome! Thanks!

 

[MileHayabusa]

Have you tried the 'DD' clutch mod?

Clutch Mod

 

[Vmax1700@]

Have you tried the 'DD' clutch mod?

Clutch Mod

Hi,
Your link leads to 1200cc. Mine is Gen2 1700.
I did a diaphragm mod. Manufacturer: EBC. See picture. Not sure if that is what you refer to?

 

[Mr. Max]

Have you measured that new clutch is in spec? If it is, buy original Yamaha spring and ditch that EBC one. I did dd-mod with old original and new original springs, and it slips only from rear tyre now.

 

[Vmax1700@]

Have you measured that new clutch is in spec? If it is, buy original Yamaha spring and ditch that EBC one. I did dd-mod with old original and new original springs, and it slips only from rear tyre now.

New clutch is original Yamaha and in spec. Can you pls elaborate what you mean with old and new “springs”? Not clear to me

 

[xoker]

This is what worked for me when my gen2 was slipping under hard acceleration: GuruedGear - Double Diaphragm Spring Clutch Kit

 

[Rick52]

Seems it ain’t possible to fix the slipping clutch of my slightly modified Vmax Gen2. 200hp version (even “a bit” more thanks to some modifs

Installed new original clutch (9 friction plates, 9 clutch plates). Installed EBC Diaphragm. Semi-synthetic oil.
Clutch keeps slipping when accelerating in 3rd, 4rd and 5th.

All advice welcome! Thanks!

I would take the semi syn out and replace with yamalube. I would install the DD (2 stock springs) with the deeper retsiner ring. Maybe consider cleaning the semi syn off the new plates. I have ran yamalube with DD for 50K miles using orm plates and no slip anytime. Course I ride like a grandma

 

[Mr. Max]

New clutch is original Yamaha and in spec. Can you pls elaborate what you mean with old and new “springs”? Not clear to me

Your old, used diaphragm spring and new Yamaha diaphragm spring. DD-mod. Ditch the EBC crap.
I had brand new clutch and it slipped, did the DD-mod and no more slipping clutch.

 

[one2dmax]

If a new clutch and it's still slipping it is highly likely you have loose rivets holding the inner basket together. Very common issue on the gen 2 engines. No amount of other clutch parts will fix that.

 

[VMATT]

If a new clutch and it's still slipping it is highly likely you have loose rivets holding the inner basket together. Very common issue on the gen 2 engines. No amount of other clutch parts will fix that.

Hi Sean,
I think this may be the issue with my bike. After Christmas I'm going to open it up and take a look. Any chance you have photos laying around of what to look for?