crank case saver - Ducati Supersport 939 Forum
 14Likes
Reply
 
LinkBack Thread Tools
post #1 of 18 (permalink) Old 02-02-2020, 04:04 AM Thread Starter
SuperSport Master
 
amoslws's Avatar
 
Join Date: Apr 2017
Location: Somewhere South
Posts: 4,349
Likes Received: 3404
crank case saver

A known issue on motorcycles is that if the chain snaps, in most cases because of poor maintenance or wrongly inserting the master link. When it gives the chain rumples up on the front sprocket and damages the crankcase. That can be really expensive to replace because they are machined in pairs.
I found this on a custom ducati page and it protects the crankcase in the case the chain attempts rumpling around the sprocket, this will prevent it and allow it to just spin off the sprocket leaving it on the road. It's really simple to make and fit.
Attached Thumbnails
Click image for larger version

Name:	Screenshot_20200202_095841.jpg
Views:	90
Size:	343.3 KB
ID:	39736  
Ed K, Rhino, Derek and 1 others like this.

Last edited by amoslws; 02-02-2020 at 04:08 AM.
amoslws is offline  
post #2 of 18 (permalink) Old 02-02-2020, 04:56 AM
SuperSport Master
 
Rhino's Avatar
 
Join Date: May 2017
Location: Queensland Australia
Posts: 2,208
Likes Received: 2438
Does this use excising holes to fix the bracket or do new ones need to be drilled and taped ( I suspect new mounting point holes are needed)
Rhino is offline  
post #3 of 18 (permalink) Old 02-02-2020, 05:39 AM Thread Starter
SuperSport Master
 
amoslws's Avatar
 
Join Date: Apr 2017
Location: Somewhere South
Posts: 4,349
Likes Received: 3404
Quote:
Originally Posted by Rhino View Post
Does this use excising holes to fix the bracket or do new ones need to be drilled and taped ( I suspect new mounting point holes are needed)
Could be cut from 1mm plate and made to fit
amoslws is offline  
Sponsored Links
Advertisement
 
post #4 of 18 (permalink) Old 02-02-2020, 06:47 AM
SuperSport Master
 
Derek's Avatar
 
Join Date: Jun 2017
Location: Angus, Scotland
Posts: 1,528
Likes Received: 1665
Quote:
Originally Posted by Rhino View Post
Does this use excising holes to fix the bracket or do new ones need to be drilled and taped ( I suspect new mounting point holes are needed)
It uses 2 of the existing holes that retain the sprocket cover.
I have had them fitted to all my Ducatis for a number of years now. I have one that came off the Multi and intended to fit it to the Supersport but the upper hole for the cover is in a different location, moved back a bit to make room for the gear sensor.
I have some stainless sheet so I really should get round to making one for the Supersport.
amoslws and Rhino like this.

2017 Supersport 939
2015 Scrambler Classic
1994 907ie
1982 Pantah 500SL (now sold)
Derek is online now  
post #5 of 18 (permalink) Old 02-02-2020, 06:53 AM
SuperSport Master
 
Derek's Avatar
 
Join Date: Jun 2017
Location: Angus, Scotland
Posts: 1,528
Likes Received: 1665
Quote:
Originally Posted by amoslws View Post
A known issue on motorcycles is that if the chain snaps, in most cases because of poor maintenance or wrongly inserting the master link. When it gives the chain rumples up on the front sprocket and damages the crankcase. That can be really expensive to replace because they are machined in pairs.
I found this on a custom ducati page and it protects the crankcase in the case the chain attempts rumpling around the sprocket, this will prevent it and allow it to just spin off the sprocket leaving it on the road. It's really simple to make and fit.
Weird! I just replied to this thread then moved to a UK Ducati forum that I use and the very first thing I saw was the same picture that @amoslws has above.
https://www.ducatiforum.co.uk/thread...d.68486/page-6
amoslws likes this.

2017 Supersport 939
2015 Scrambler Classic
1994 907ie
1982 Pantah 500SL (now sold)
Derek is online now  
post #6 of 18 (permalink) Old 02-02-2020, 07:18 AM Thread Starter
SuperSport Master
 
amoslws's Avatar
 
Join Date: Apr 2017
Location: Somewhere South
Posts: 4,349
Likes Received: 3404
Quote:
Originally Posted by Derek View Post
Weird! I just replied to this thread then moved to a UK Ducati forum that I use and the very first thing I saw was the same picture that @amoslws has above.
https://www.ducatiforum.co.uk/thread...d.68486/page-6
Haha, it must be the story for the week. Nevertheless, ducati owners help each other.
I did use his pic but from a different site.

Last edited by amoslws; 02-02-2020 at 07:21 AM.
amoslws is offline  
post #7 of 18 (permalink) Old 02-02-2020, 09:32 AM
Knee Dragger
 
psyopper's Avatar
 
Join Date: May 2017
Location: Portland, Oregon
Posts: 776
Likes Received: 912
Garage
A number of companies make these, for those who aren't into fabricating steel. My favorite is made in Titanium and includes a sprocket guard. Requires a 14T front sprocket.

StradaFab - Exotic Performance Fabrication ? Ducati Titanium Sprocket Guard with Case Saver

I don't think this version would fit our bikes, but Randy, the maker, is open to new applications.
RobertVP likes this.

1994 900 SS/CR
2017 939 SuperSport S

It's Italian. If I can get it to start, it'll win.
psyopper is offline  
post #8 of 18 (permalink) Old 02-02-2020, 11:54 AM
Elbow Dragger
 
Join Date: Feb 2019
Location: Edmond OK
Posts: 1,466
Likes Received: 721
Seems like no brainer for $30. But this listing doesn't show a fit for the SS.

https://motowheels.com/i-8328068-cor...ain-guard.html

Perhaps due to the 15t OEM sprocket or perhaps the holes don't match?

John L

Ducs quack at midnight and 9am
LowRyter is offline  
post #9 of 18 (permalink) Old 02-02-2020, 12:08 PM
Chicken Strips
 
Join Date: Feb 2019
Location: Lower Alabama (LA) USA
Posts: 594
Likes Received: 442
Garage
Ive seen them made to fit Hinckley Triumphs before, though I have not purchased one.

Mike

1976 BMW R1000 Cafe
2012 Triumph Thruxton Custom
2018 Ducati SSS (red!)
Paddlefoot64 is offline  
post #10 of 18 (permalink) Old 02-02-2020, 02:22 PM
Super Moderator
 
Ed K's Avatar
 
Join Date: Feb 2017
Location: America
Posts: 5,221
Likes Received: 2713
Quote:
Originally Posted by Derek View Post
Weird! I just replied to this thread then moved to a UK Ducati forum that I use and the very first thing I saw was the same picture that @amoslws has above.
https://www.ducatiforum.co.uk/thread...d.68486/page-6
Ut oh! Who know what’s coming next!
amoslws likes this.

2017 Ducati SuperSport S
2015 Ducati Scrambler
Ed K 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