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65 mark 3 - rear shocks

Posted: Mon Jun 06, 2016 12:48 pm
by Eraserhead
ok, so i'm new here.. i just purchased a 1965 Ducati Mark 3 to restore. first challenge... how do i get the springs of of the rear shocks.. i assume i need to compress them but then what ?

help needed

cheers

Dave

Re: 65 mark 3 - rear shocks

Posted: Mon Jun 06, 2016 2:48 pm
by JimF
I am trying to remember, but I do recall the internal construction is quite simple.

I placed a thick nylon cable tie around adjacent spring loops and then repeated the cable tie around two more loops but 90 degrees offset over and I've again. I cinched them up sequentially in the same sort of pattern. At some point I think three ball bearings fell out and the sticks came apart easily.

I had my springs re-chromed and just cleaned up the internal shock parts if I recall correctly.


Jim

Re: 65 mark 3 - rear shocks

Posted: Mon Jun 06, 2016 6:25 pm
by nalimugmug
A
DSC00061_3.JPG
pic for you

Re: 65 mark 3 - rear shocks

Posted: Fri Jun 10, 2016 3:05 pm
by Eraserhead
that is perfect and so simple...doh!!

and here she be in all her glory...

thanks guys

Re: 65 mark 3 - rear shocks

Posted: Fri Jun 10, 2016 3:22 pm
by Rick
I have a basketcase Mark3 too- I can send you a drawing of the missing frame lugs if you need to get them made.
Rick

Re: 65 mark 3 - rear shocks

Posted: Thu Jun 23, 2016 2:00 pm
by Eraserhead
yes i do indeed Rick and thank you.. you are the best

oh and here is a picture or 2 of a spring compressor from a guy in UK.. bought it on ebay but its too short for Ducati springs so he is building a new version for me that is longer .. i will post pics and the link to him once i get the new tool and it works..

cheers

Dave

Re: 65 mark 3 - rear shocks

Posted: Fri Jun 24, 2016 2:53 pm
by Rick
Dave,
Let me know if you want an actual drawing, but it probably won't be needed, at least for the exhaust/buddypeg lug I noticed. It's 20mm diameter, 25mm long, with a 7/16"x20 tpi thread. I've never heard a good explanation of why Ducati chose this thread pitch, but it's found on the bevel twins also. If you made the lugs from 3/4" shaft I doubt if anyone will notice the lugs are 0.037" undersize.
Rick
lug.jpg

Re: 65 mark 3 - rear shocks

Posted: Sun Jun 26, 2016 12:13 pm
by Eraserhead
Thanks Rick

Will keep you posted

Dave

Re: 65 mark 3 - rear shocks

Posted: Mon Jun 27, 2016 4:59 pm
by Eraserhead
here is the link on ebay to guy who makes spring compressors...he made me a pair larger to fit Ducati...

http://www.ebay.ca/itm/112027396435?_tr ... EBIDX%3AIT