Crunchy Grindy Sounds - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Transmission / Rear End
\ Chattering Clutch? Transmission Trouble?
Rear End Woes? Splines Shot? Discuss it here!

 2Likes
  • 1 Post By T-Bone
  • 1 Post By CKGonzo
 
LinkBack Thread Tools Display Modes
post #1 of 10 (permalink) Old 04-25-2017, 01:47 PM Thread Starter
Member
 
T-Bone's Avatar
 
Join Date: Nov 2016
Location: Warwick, New York
Posts: 82
iTrader: (0)
 
Garage
Crunchy Grindy Sounds

For a week now I noticed a new sound. When I accelerate from a stop I hear a sound that at first I thought was the rear wheel spinning on road grit. Now I think it's coming from the clutch or transmission. I just checked and re-greased the spline, so it's not that. Does this ring any bells with the members?
T-Bone is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 04-25-2017, 01:53 PM
1986 VN750
 
thtanner's Avatar
 
Join Date: Nov 2011
Location: Dana Point, CA
Posts: 3,255
iTrader: (8)
 
Garage
Is it only the first few accelerations of the day, or every single one?

When cold, the clutch can cause a grindy noise called the coffee grinder noise. You can find tons of threads on it. A solution is to drill the clutch basket.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
thtanner is offline  
post #3 of 10 (permalink) Old 04-25-2017, 01:54 PM
Senior Member
 
ubertalldude's Avatar
 
Join Date: Jun 2016
Location: NE Florida
Posts: 640
iTrader: (0)
 
try rolling the bike around in the garage to see where it's coming from, or you can put the bike up on the centerstand and get the rear tire off the ground and spin it freely

my first thought might be that u-joint where the bevel gear comes out of the engine and goes into the shaft tube, that area can get pretty greasy if the rubber boot is undone
ubertalldude is online now  
 
post #4 of 10 (permalink) Old 04-25-2017, 02:51 PM
Super Moderator
 
Join Date: Feb 2013
Location: SW Florida
Posts: 2,419
iTrader: (5)
 
I agree on the coffee grinder syndrome (CGS)

2005 VN750

Sold 11-27-17
michiganteddybear is online now  
post #5 of 10 (permalink) Old 04-26-2017, 07:35 AM Thread Starter
Member
 
T-Bone's Avatar
 
Join Date: Nov 2016
Location: Warwick, New York
Posts: 82
iTrader: (0)
 
Garage
Thank you. I'll try to pay closer attention, but now that I think about it, I'm pretty sure that it only happened in my driveway and the parking lot at work.
T-Bone is offline  
post #6 of 10 (permalink) Old 04-26-2017, 10:16 AM
FREEBIRDS MC CENTRAL NY
 
OleDirtyDoc's Avatar
 
Join Date: May 2011
Location: Norwich,NY
Posts: 15,824
iTrader: (0)
     
Garage
Send a message via Yahoo to OleDirtyDoc
Quote:
Originally Posted by T-Bone View Post
Thank you. I'll try to pay closer attention, but now that I think about it, I'm pretty sure that it only happened in my driveway and the parking lot at work.
yup.coffee grinder syndrome.

Sent from my LGL34C using Tapatalk

ONE RATS ASS GIVEN PER POST
Support your local FREEBIRDS MC
1986/5 Vn700/750 Frankenfook cross eyed bitch "Mellisa Fayhe"
I am a BIKER and i'm proud.FREEBIRDS MC CENTRAL NY

lowered with progessive 412 10" shocks
rejetted for K/N Pods part#rc 2340
sportster seat

'I didn't lose my mind.i gave it away

BRING BACK WOLFIE."Peace and Carrots"RIP
"And I'm free...as a bird"John Lennon Free as a Bird
"I only carry when I have my pants on"Joe Robinson RIP aka Old Dog
OleDirtyDoc is offline  
post #7 of 10 (permalink) Old 04-28-2017, 03:14 PM Thread Starter
Member
 
T-Bone's Avatar
 
Join Date: Nov 2016
Location: Warwick, New York
Posts: 82
iTrader: (0)
 
Garage
I can confirm that it is just when the bike is cold. Thank you for the advice. I looked up the clutch basket drilling procedure and it looks pretty straightforward. Something to do on a rainy weekend!

Thanks again!
thtanner likes this.
T-Bone is offline  
post #8 of 10 (permalink) Old 04-28-2017, 04:28 PM
Old Fart
 
Knifemaker's Avatar
 
Join Date: Jun 2004
Location: Catawissa, MO
Posts: 11,522
iTrader: (4)
     
Garage
Quote:
Originally Posted by T-Bone View Post
I can confirm that it is just when the bike is cold. Thank you for the advice. I looked up the clutch basket drilling procedure and it looks pretty straightforward. Something to do on a rainy weekend!

Thanks again!
Just so you know, there's no proof that anything is getting hurt when this happens. Most will say if you let the bike warm up well before you take off, and while doing so squeeze the clutch lever in a bunch of times, it rids or lessens the noise.
I put in a Kevlar clutch...(not to cure the issue)..and the noise went away ....for about a year.

Many just live with it....

If You Are Not Sure If I Am Joking or Not....I AM !!Photos:
http://www.flickr.com/photos/knifemaker1954/sets/
Knifemaker is offline  
post #9 of 10 (permalink) Old 04-28-2017, 04:39 PM
1986 VN750
 
thtanner's Avatar
 
Join Date: Nov 2011
Location: Dana Point, CA
Posts: 3,255
iTrader: (8)
 
Garage
Yeah I don't think it causes too much issue, maybe a bit of extra wear on the clutch plates at most. It's also embarrassing in a parking lot, haha.

I idle for a min or two and pull in my clutch a bunch before the first take-off.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
thtanner is offline  
post #10 of 10 (permalink) Old 04-29-2017, 01:20 PM
Junior Member
 
CKGonzo's Avatar
 
Join Date: Feb 2017
Location: Longmont, CO
Posts: 26
iTrader: (1)
 
Garage
Same here with the grinder noise. Mine will also grab when engaging the clutch from a dead stop. Just have to be mindful when pulling away for the first few miles.


Sent from my iPad using Tapatalk
thtanner likes this.

Current: 2004 VN750
Former: 1989 VN750, 1978 Honda CB250
Back in the saddle again after sacrificing my ride for my kids in 1994!
CKGonzo is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Once registered, your User Name"cannot be changed". We can make exceptions within 7 days, but after that, it is set in stone.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome