Dumb Question - Sportbike Forum: Sportbike Motorcycle Forums
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 10-17-2001, 03:09 PM Thread Starter
Registered User
 
Join Date: Apr 2000
Location: San Diego, CA 92166
Posts: 517
Question Dumb Question

What's driveline lash?

It doesn't have to be fun to be "fun".
scotty is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 10-17-2001, 06:57 PM
Registered User
 
Join Date: Jan 2001
Location: Ipswich, MA
Posts: 108
Send a message via AIM to phalanx
Say you are riding at about 50 MPH and you engine brake down to about 30. All of a sudden some punk kid in a riced out Geo with a fart pipe blows past you waving. You have to save face so you open up the throttle and notice a "kick" that feels like someine hit your rear tire with a mallet. That kick that you feel is driveline lash.

It's mainly caused by loose chains that take a split second to come under tention (It can also be related to your gear box, but that is far less likely). If you have bad driveline lash, the first thing you should do is examine your chain and sprockets. Make sure the chain and sprockets satisfy the tolerances specified in your shop manual. If they aren't, get yourself some new ones. Also, replace your chain and sprockets if your chain tensioners are all the way out.

A little bit of driveline lash is inherent in every chain driven motorcycle because the the chain cannot be perfectly tight since it needs a little slack to allow the rear suspension to travel.

I prefer to step lightly and carry a BIG stick...
phalanx is offline  
post #3 of 9 (permalink) Old 10-18-2001, 12:27 AM
 
Join Date: Sep 2001
Posts: 259
ouch

That can rip a chain apart no? All that torque being applied at once on one section of the chain? ouch.
thothscribe is offline  
 
post #4 of 9 (permalink) Old 10-18-2001, 12:29 AM
 
Join Date: Mar 2000
Posts: 1,246
Phalanx is correct
Dan F4 is offline  
post #5 of 9 (permalink) Old 10-18-2001, 12:57 AM
Registered User
 
Join Date: Jan 2001
Location: Ipswich, MA
Posts: 108
Send a message via AIM to phalanx
Re: ouch

Quote:
Originally posted by thothscribe
That can rip a chain apart no? All that torque being applied at once on one section of the chain? ouch.
The chains are designed for it and like being treated rough occasionally!

I prefer to step lightly and carry a BIG stick...
phalanx is offline  
post #6 of 9 (permalink) Old 10-18-2001, 01:08 AM
Dad
Registered User
 
Join Date: Oct 2000
Location: Pittsburgh Pa
Posts: 4,230
The chain will take it if it's not worn out anyway. Just be sure to get the proper free play number for your model/year of bike and don't make it any tighter than the recommended. Not all bikes are the same due to swing arm pivot and engine sprocket location differences. Making it too tight will do serious damage to the chain and can wipe out the shaft bearing behind the sprocket. If you must err, make it on the loose side. Having the proper setting helps to smooth the off/on throttle transition. Hope that helps.

Keeping the "Hap" in "Happy Holidays"!

Regime change begins at home.

Blind patriotism is worse than no patriotism.
Dad is offline  
post #7 of 9 (permalink) Old 10-18-2001, 01:31 AM
 
Join Date: Sep 2001
Posts: 5
Wink Re: Re: ouch

Quote:
Originally posted by phalanx


The chains are designed for it and like being treated rough occasionally!



I had a girlfriend like that once.
riderwriter is offline  
post #8 of 9 (permalink) Old 10-18-2001, 02:56 AM
 
Join Date: Sep 2001
Posts: 259
Re: Re: ouch

Quote:
Originally posted by phalanx


The chains are designed for it and like being treated rough occasionally!
Damn, I was beat to the punch. You knew you'd get a reply from that one!!!!!
thothscribe is offline  
post #9 of 9 (permalink) Old 10-18-2001, 04:32 AM
Registered User
 
Join Date: Jan 2001
Location: Ipswich, MA
Posts: 108
Send a message via AIM to phalanx
Re: Re: Re: ouch

Quote:
Originally posted by thothscribe

You knew you'd get a reply from that one!!!!!

Every now and then it's fun to troll for responses!

I prefer to step lightly and carry a BIG stick...
phalanx is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



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

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