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Members: 641 | Total Threads: 50,834 | Total Posts: 518,616 Currently Active Users: 594 (0 active members) Please welcome our newest member, DarnCyclists |
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#1 |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,859
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Thanks for a nice clear explanation Spuggy.
To clarify my solution to my lack of shoulder bolts in the first place, here's what I made from 1" ally bar. Inexcusable dust from a mould making project exposed by the flash! Bike hasn't been used since December and the refresh is still ongoing. ![]() ![]() ![]() ![]() Hopefully that explains things in pictures better than a whole bunch of words (Spuggy speak ![]() The dims of the top hats can be pretty much generated from the original shoulder bolts and the head pattern is up to you. Note that the actual shoulder is reduced to about 1mm all round on the 10mm top hats, so they get a bit tender! This is a good way of making the bolt length totally adjustable ad nauseum. Finally here's what a previous owner thought would be a good idea to form a shoulder bolt!! Also some cup washers, original and custom. ![]()
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Last edited by Mr Gazza; 23-06-2024 at 09:11 AM.. |
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#2 |
Registered User
Join Date: May 2024
Location: Diss
Bike: M600
Posts: 20
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Thanks Gazza. In the absence of tools to fabricate the longer bolts I am hoping to pursue your previous suggestion of buying another LH screw (if it is longer) and use it on the right. Problem is no dimensions are specified and they don't know themselves, they just order them from Italy. I won't know until I try it I guess. Might avoid the insulation tape solution though !
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#3 |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,859
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You already know know how long the LH screws are, you own 2.
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#4 |
Registered User
Join Date: May 2024
Location: Diss
Bike: M600
Posts: 20
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Yes exactly that's the plan, to try the LH side bolts on the RH side when I eventually start the work buf it won't be until after the Summer. In the meantime I was trying to get bolt dimensions to see if it's feasible.
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#5 |
Registered User
Join Date: May 2024
Location: Diss
Bike: M600
Posts: 20
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Quick Update ─ after trawling the internet it seems the LH bolt is 53mm long and the RH bolt is 46mm long. Doesn't quite give me the 10mm difference I was hoping for but it depends how much spare thread there is already. I'll find out when I try it out.
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#6 | |
Registered User
Join Date: Apr 2016
Location: Farnborough
Bike: M900sie
Posts: 184
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Quote:
There are sources for domed & countersunk "finishing" washers off-the-shelf - and countersunk stainless bolts available in a surprising (and quite pleasing) selection of lengths. Bar stock spacers & washers readily available or easily adapted with hand tools. Doesn't seem like any real need for one-off machining. Although I often pine for access to a mid-size lathe or mill.... |
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#7 |
Registered User
Join Date: May 2024
Location: Diss
Bike: M600
Posts: 20
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Can you recommend any sources Spuggy ?
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#8 | |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,859
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Quote:
The shoulder length is 19mm, I'll get the diameter a bit later today when I open the workshop, but it will be the same as a standard Ducati shoulder bolt. Great idea to source those bits to make up custom shoulder bolts and spacers. I had to do the same to replace some shouldered body bolts on the other bike. They were M5 with a 2mm shoulder, so I found some ally spacers the right size from China and they work well with Titanium bolts, except I have to remember to catch the little spacer/shoulder when I take them out. It might even work out cheaper or not much more to get a local person with a lathe to spin some top hats up from 25mm ally bar. Dacs knows someone in Norwich and there is Hutch at HTE motorcycles in Beeston. htemotorcycles@yahoo.co.uk. they are all over the place if you look. Alec at English Electric Motor Company in Redgrave has got a lovely lathe.
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