Ducati Monster Forum

Moto Board => Tech => Topic started by: Düb Lüv on April 12, 2014, 08:58:17 PM

Title: method for tightening machined / lightweight flywheel nut
Post by: Düb Lüv on April 12, 2014, 08:58:17 PM
i know ducati has a holding tool for tightening the flywheel nut for a stock flywheel. what about one that's machined down and doesn't have the 2 holding holes for the factory tool. i have an idea on making a tool, but thought i would ask first. wedging a penny between the gears doesn't sound like a good method to me.

lightened stock flywheel
(http://i181.photobucket.com/albums/x251/seusssandm/1ebebaa8.jpg) (http://s181.photobucket.com/user/seusssandm/media/1ebebaa8.jpg.html)
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: brad black on April 12, 2014, 10:49:50 PM
i have a factory tool that goes over the 8 screw heads that holds the inner ring in.  it's always worked nicely.
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: Speeddog on April 12, 2014, 11:09:10 PM
Perhaps one of these?

(http://img.rakuten.com/PIC/68435394/0/1/500/68435394.jpg)
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: Düb Lüv on April 13, 2014, 11:02:42 AM
Quote from: brad black on April 12, 2014, 10:49:50 PM
i have a factory tool that goes over the 8 screw heads that holds the inner ring in.  it's always worked nicely.

Id like to see a picture of that. I thought about using my old rotor and welding a long handle on it.

Didn't think about the chain wrench idea. I'll have to see if my chain is long enough.
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: MonsterHPD on April 13, 2014, 12:58:40 PM
I did not have a factory tool, so I mde my own:

(http://i855.photobucket.com/albums/ab117/Monsterhpd/Monster%20Forum/P4130079_zps646b5117.jpg) (http://s855.photobucket.com/user/Monsterhpd/media/Monster%20Forum/P4130079_zps646b5117.jpg.html)

Not the most elegant, but it woks great.
The big holes go over the heads of the Allen screws, the 2 smaller use the allen head screws to hold the tool securely in place.
I also have a long, detachable handle that will block on the footpeg. Not that it brings me many favours, but the tool has had some popularity locally  ;)   
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: MotoPsycho on April 16, 2014, 02:37:53 AM
put the tranny in 6th and find the biggest chunk of wood. I used 3 shovel handles wrapped in towels.
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: Speeddog on April 16, 2014, 12:26:02 PM
Quote from: GRUBBY on April 16, 2014, 02:37:53 AM
put the tranny in 6th and find the biggest chunk of wood. I used 3 shovel handles wrapped in towels.

If all 3 had blades on them, I hope you took a pic.
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: ChrisK on April 16, 2014, 12:41:54 PM
Quote from: Speeddog on April 16, 2014, 12:26:02 PM
If all 3 had blades on them, I hope you took a pic.

[laugh]
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: Düb Lüv on April 25, 2014, 07:06:03 PM
Here's excalibur

(http://i181.photobucket.com/albums/x251/seusssandm/CF4EFE90-DCA3-4E76-939E-3A2577137A0D.jpg) (http://s181.photobucket.com/user/seusssandm/media/CF4EFE90-DCA3-4E76-939E-3A2577137A0D.jpg.html)
(http://i181.photobucket.com/albums/x251/seusssandm/C238DD61-BF33-4E4B-92F1-C3485855A37B.jpg) (http://s181.photobucket.com/user/seusssandm/media/C238DD61-BF33-4E4B-92F1-C3485855A37B.jpg.html)

Made use of an extra rotor laying around. Worked like a dream with minimal effort. Thanks for the ideas
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: Speeddog on April 25, 2014, 10:21:08 PM
That should do it.
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: jerryz on April 27, 2014, 05:09:22 AM
Put a steel rod through the eye of a  conrod and lower it onto some wood   then tighten up the fly wheel nut
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: DarkMonster620 on April 27, 2014, 08:18:55 AM
Just a reminder:

flywheel nut   270N/m with Loctite 128455, this as per Ducati Official repair manual[due to not having available said Loctite, I used green Loctite]
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: Düb Lüv on May 10, 2014, 07:39:00 PM
I used the double jam nuts so it's only 140ft lbs. lathered some red loctite on there.

I don't like the idea of putting stress on other engine components to tighten a higher torque fastener.
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: Howie on May 10, 2014, 07:46:22 PM
Quote from: Darkmonster620 on April 27, 2014, 08:18:55 AM
Just a reminder:

flywheel nut   270N/m with Loctite 128455, this as per Ducati Official repair manual[due to not having available said Loctite, I used green Loctite]

Loctite 128455 is also known as Loctite 648.
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: DarkMonster620 on May 10, 2014, 07:48:51 PM
Quote from: Düb Lüv on May 10, 2014, 07:39:00 PM
I used the double jam nuts so it's only 140ft lbs. lathered some red loctite on there.

I don't like the idea of putting stress on other engine components to tighten a higher torque fastener.
Needs to be 270Nm . . .170Nm+red loctite came off many times. now, 140Nm+red loctite+2 jam nuts . . .
Title: Re: method for tightening machined / lightweight flywheel nut
Post by: Düb Lüv on May 11, 2014, 05:26:17 AM
Quote from: Darkmonster620 on May 10, 2014, 07:48:51 PM
Needs to be 270Nm . . .170Nm+red loctite came off many times. now, 140Nm+red loctite+2 jam nuts . . .

(http://i181.photobucket.com/albums/x251/seusssandm/11FF0381-8BAE-4469-B7CA-79F34EAAA0B3.png) (http://s181.photobucket.com/user/seusssandm/media/11FF0381-8BAE-4469-B7CA-79F34EAAA0B3.png.html)

I spoke with Nichols to verify and they said the same thing as the corse dynamics page. Nichols said ducati kept putting a higher torque spec on the factory nut without addressing the real problem. The junky garbage nut that's know for loosing up.