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| Paso 20mm swingarm pivot modification http://ducatipaso.org/forum/viewtopic.php?f=3&t=7618 |
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| Author: | Speedmade [ Mon Dec 19, 2016 11:20 pm ] | |||
| Post subject: | Paso 20mm swingarm pivot modification | |||
I found that the Paso has a 15mm swingarm pivot. That is very small especially considering that all other Ducati models since 1990 they have used a 20mm pivot. So I decided that I wanted to upgrade. This would require modifications to the frame and the bearings in the swingarm.
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| Author: | Speedmade [ Mon Dec 19, 2016 11:22 pm ] | ||
| Post subject: | Re: Paso 20mm swingarm pivot modification | ||
I found a 20mm axle from some Japanese bike was very close in spec to the Paso pivot.
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| Author: | Speedmade [ Mon Dec 19, 2016 11:23 pm ] | |||
| Post subject: | Re: Paso 20mm swingarm pivot modification | |||
My plan was to bore out the frame but it was impossible to fit in a milling machine. So I made fixtures that allowed me to drill out the holes in steps.
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| Author: | Speedmade [ Mon Dec 19, 2016 11:25 pm ] | |||
| Post subject: | Re: Paso 20mm swingarm pivot modification | |||
Measuring the inside of the frame I realized that there would be very little surface area left so I had cups machined that I welded over the original pivot area.
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| Author: | Speedmade [ Mon Dec 19, 2016 11:28 pm ] | |||||
| Post subject: | Re: Paso 20mm swingarm pivot modification | |||||
Modifications to the bearings in the swingarm were pretty straight forward. Sourced some new bearings and made a few new spacers.
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| Author: | Speedmade [ Mon Dec 19, 2016 11:31 pm ] | |||||
| Post subject: | Re: Paso 20mm swingarm pivot modification | |||||
I had to turn the head of the new pivot down slightly to fit down the frame pocket. On the other side I had to source a small OD flange nut. Everything fit so I could install the black plastic caps.
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| Author: | Speedmade [ Mon Dec 19, 2016 11:32 pm ] | ||
| Post subject: | Re: Paso 20mm swingarm pivot modification | ||
This should make for a much stiffer chassis.
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| Author: | englishstiv [ Mon Dec 19, 2016 11:34 pm ] |
| Post subject: | Re: Paso 20mm swingarm pivot modification |
I absolutely love shit like this, Well done and brilliant photo's and explanation I think G will be putting this in the FAQ thread pretty soon  
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| Author: | Mc tool [ Tue Dec 20, 2016 3:28 am ] |
| Post subject: | Re: Paso 20mm swingarm pivot modification |
I love shit like this too , more the psychiatric side of things than anything to do with motorcycle engineering . I mean your obviously no dummie when it comes to making things outa metal but if you really wanted to stiffen up the chasis you shoulda just painted it , any how , nice job ...... if you must 
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| Author: | Speedmade [ Tue Dec 20, 2016 4:52 am ] |
| Post subject: | Re: Paso 20mm swingarm pivot modification |
The frame will be powder coated once I finish the rest of the modifications to install the 999S motor |
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| Author: | Mc tool [ Tue Dec 20, 2016 5:22 am ] |
| Post subject: | Re: Paso 20mm swingarm pivot modification |
Oh yeah ! I can so see why you'd want to do that.  Have you thought about fitting the Paso body work to a 999s ?
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| Author: | Frank.61 [ Tue Dec 20, 2016 11:13 am ] |
| Post subject: | Re: Paso 20mm swingarm pivot modification |
Hi, soory but maybe I've missed it: how did you solve it with the bearings in the engine case? Also, what is your main reason to go from 15 to 20mm? Frank |
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| Author: | paso750 [ Tue Dec 20, 2016 11:57 am ] |
| Post subject: | Re: Paso 20mm swingarm pivot modification |
| Author: | Frank.61 [ Tue Dec 20, 2016 12:10 pm ] |
| Post subject: | Re: Paso 20mm swingarm pivot modification |
Ok, missed that (the 999 engine). Wow, quit a project! Assume that adapting the swingarm bolt is the easiest modification Will be interesting to see the project in progress! Good luck
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| Author: | paso750 [ Tue Dec 20, 2016 12:29 pm ] |
| Post subject: | Re: Paso 20mm swingarm pivot modification |
Speedmade, don`t mind me asking but seeing that the thread of the 20mm pivot is longer I wonder which part of it sits in the frame. Hope you get what I mean. (if it`s the threaded part it could cause radial play, which may be gone if all is tightened up, but still...) |
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