Chain completely shot - Page 4 - Ducati Supersport 939 Forum
 18Likes
Reply
 
LinkBack Thread Tools
post #31 of 42 (permalink) Old 07-19-2019, 07:10 AM
Chicken Strips
 
Join Date: Nov 2016
Posts: 430
Likes Received: 380
Quote:
Originally Posted by karishh View Post
Good discussion here! I think I'm leaning towards only replacing the chain since I can do it myself fairly easily, put a snap link on the chain and drive it slowly to the dealer where they can rivet it on properly in about a minute or two.

But are we in agreement that my chain needs replacing based on the video I posted? :P
Yes, the chain is shot, not horribly so, but it is.

The side plate of a clip type link needs to be pressed on. Sure you can struggle with a set of pliers and get it on. The cost of the clip master link $5 to $10 and a lot of hassle to fit. Then you have to spend time riding to the dealer and hanging around, and then get a bill for $60? for riveting the chain (rivet type usually supplied with the chain).

Alternatively, you spend $90 and buy an RK Chain tool (don't even think of getting anything else) and now you'll be able to perfectly and easily press on the side plates of both clip and rivet master links and do perfect flairs each and every time for the rest of your life.

Anyone who can't do a perfect job riveting a master link with an RK Chain tool, the 'rolls-royce' of chain tools, shouldn't be doing anything mechanical to a motorcycle. You don't even need to measure anything, it'll press the side plate on the exact correct distance (different for clip and rivet type master links).

P.S. Just remember to grind the heads of the pins of the link where you plan to separate the chain. You'll bust just about any tool trying to do it without removing the heads. I find a small 6" angle grinder perfect for the job.
1uglybastard and karishh like this.

Last edited by John; 07-19-2019 at 07:13 AM.
John is online now  
post #32 of 42 (permalink) Old 07-19-2019, 08:37 AM
Chicken Strips
 
Join Date: Nov 2016
Posts: 430
Likes Received: 380
Quote:
Originally Posted by karishh View Post
But are we in agreement that my chain needs replacing based on the video I posted? :P
Perhaps for the sake of the discussion, its worth explaining why the chain is shot.

When a chain is new it will be exactly the same pitch (distance between the links) as the distance between the sprocket teeth, and as such be a tight fit around the full back half of the sprocket. As the chain stretches (it doesn't stretch as such, but every pin on the chain wears a tiny amount) the chain pitch increases and eventually it no longer matches the sprocket. That's reflected in the amount you can pull the now longer chain away from the back of the sprocket.

It can't simply be adjusted out because the chain is already locked into the sprocket at the very top and bottom teeth of the sprocket. The amount you can pull the chain back is the amount the chain is now longer than those two points. You can tighten the chain up as tight as a guitar string, and the pullback at the back of the sprocket will still be there.

Run a stretched chain that no longer matches the sprocket pitch and the next thing that happens is the sprocket teeth will start to hook badly. A typical workshop manual will have you evaluate the serviceability of a drive chain by measuring the distance between X pins. Checking the chain for stretch at the back of the sprocket is doing virtually the same thing, but just using the sprocket as a template. If the chain can be pulled back any significant amount the chain has 'stretched' beyond its acceptable service limit.
Ed K, 1uglybastard, Derek and 2 others like this.

Last edited by John; 07-19-2019 at 08:41 AM.
John is online now  
post #33 of 42 (permalink) Old 07-19-2019, 09:59 AM
Super Moderator
 
Ed K's Avatar
 
Join Date: Feb 2017
Location: America
Posts: 4,841
Likes Received: 2450
@John nice summary explanation...

2017 Ducati SuperSport S
2015 Ducati Scrambler
Ed K is online now  
Sponsored Links
Advertisement
 
post #34 of 42 (permalink) Old 07-27-2019, 10:54 PM
Training Wheels
 
Keith Gill's Avatar
 
Join Date: Aug 2018
Location: Salida Colorado
Posts: 292
Likes Received: 376
Great post. Got me to rethink my psylosothy on sprocket replacement. In the past I've always worn the chain out and replaced the set. But after looking up the price of the sprocket I decided to replace the chain at the first sign of wear - 11,000 mls for me. I'll wear out the second chain and then replace the set.
amoslws likes this.
Keith Gill is offline  
post #35 of 42 (permalink) Old 07-28-2019, 12:43 AM
Chicken Strips
 
Join Date: Nov 2016
Posts: 430
Likes Received: 380
Quote:
Originally Posted by Keith Gill View Post
Great post. Got me to rethink my psylosothy on sprocket replacement. In the past I've always worn the chain out and replaced the set. But after looking up the price of the sprocket I decided to replace the chain at the first sign of wear - 11,000 mls for me. I'll wear out the second chain and then replace the set.
Strategy will work just fine. It's an ill fitting chain that does 90% (just made that number up) of the wear to a sprocket.

I run alloy rear sprockets on my bike (not a SS), and as long as you don't run a shot chain its surprising how good a shape they retain. Probably different on a heavy or 200hp bike. I do still replace the chain and sprockets but that is just being anal. Even the alloy rear sprocket could easily go round a second time.
John is online now  
post #36 of 42 (permalink) Old 07-28-2019, 07:19 AM
SuperSport Master
 
amoslws's Avatar
 
Join Date: Apr 2017
Location: Somewhere South
Posts: 4,204
Likes Received: 3294
Quote:
Originally Posted by Keith Gill View Post
Great post. Got me to rethink my psylosothy on sprocket replacement. In the past I've always worn the chain out and replaced the set. But after looking up the price of the sprocket I decided to replace the chain at the first sign of wear - 11,000 mls for me. I'll wear out the second chain and then replace the set.
My thoughts too. OEM chain showed signs of rust so I put on the X Ring DID. Next change will be a full set. Every second change will include sprockets.
amoslws is online now  
post #37 of 42 (permalink) Old 07-28-2019, 09:23 AM
Elbow Dragger
 
Join Date: Feb 2019
Location: Edmond OK
Posts: 1,212
Likes Received: 617
curious if the OEM sprocket is the same for Monster 821 and others.....

https://sprocketcenter.com/street-sp...1-monster.html

if so, full shebang for a couple hundred. Or $350 for putting the full quick change in place.

https://sprocketcenter.com/street-sp...-panigale.html

John L
LowRyter is online now  
post #38 of 42 (permalink) Old 07-28-2019, 09:48 AM
SuperSport Master
 
amoslws's Avatar
 
Join Date: Apr 2017
Location: Somewhere South
Posts: 4,204
Likes Received: 3294
Quote:
Originally Posted by LowRyter View Post
curious if the OEM sprocket is the same for Monster 821 and others.....

https://sprocketcenter.com/street-sp...1-monster.html

if so, full shebang for a couple hundred. Or $350 for putting the full quick change in place.

https://sprocketcenter.com/street-sp...-panigale.html
No. The 1200 monster and SS fit the same hub.
amoslws is online now  
post #39 of 42 (permalink) Old 07-28-2019, 09:50 AM
Elbow Dragger
 
Join Date: Feb 2019
Location: Edmond OK
Posts: 1,212
Likes Received: 617
Thanks Amos

John L
LowRyter is online now  
post #40 of 42 (permalink) Old 07-28-2019, 09:54 AM
SuperSport Master
 
amoslws's Avatar
 
Join Date: Apr 2017
Location: Somewhere South
Posts: 4,204
Likes Received: 3294
Quote:
Originally Posted by LowRyter View Post
Thanks Amos
Quick note. The SS is a 520 and the 1200 is 525. I'm presently running 520 on my SS1200 and it's holding fine. If you do change then you'll need to change all three components.
Ed K likes this.
amoslws is online now  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not 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