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View Full Version : Single sided swingarm on a 900 ssie



Slower than my shadow
22.11.2015, 10:33 AM
This year has been pants, health issues kept me off the bikes throughout the spring & summer, the I suffered a retinal detachment in August. Long story, but sight has returned and a final simple op over the winter will restore everything.

So now the first dumping of rock salt has arrived on local roads, the Duchess will go into hibernation. I've got various mods going into the engine - 944 conversion, extra 1098 oil rad, magnesium covers and a few cosmetic bits. But I've recently saw a supersport pass through town sporting a monster S2R /S4R swing arm.

I know this subject is like Marmite, has anyone else or this forum considered it or attempted it?

I've Googled the subject, and there's a few leads and pics, so far all I get is deadends. I've measured the relevant components and it appears eminently "do-able", the only issue being getting the lower shock welded onto the swingarm. But I know a workshop that have the ability to do that work.

iconic944ss
22.11.2015, 02:25 PM
Ive considered this myself but decided that without an actual ride convincing me of anything other than cosmetic benefits then I'd probably never do it.

Gotta be heavier than the original and Ive seen a braced swingarm version (Pierobon?) that looks SO much better again ;)

DrD
22.11.2015, 04:30 PM
"SSSA's weren't Foggy's favourite and proved to chew up tyres and diminish the handling"
Read more: http://www.visordown.com/forum/workshop/metmachex-a-tale-of-woe-b12-owners-in-particular/18853.html#ixzz3sF68T1ow

Slower than my shadow
23.11.2015, 09:30 AM
Thanks for comments guys.

I completely get the thoughts about possible handling issues, but having ridden various sssa bikes, I think handling issues are more likely to be an issue due to other considerations.
The sssa is largely a cast item, so is going to be inherently stiffer than welded box section. I'm sure the sssa isn't going to weigh less, but it would look a million bucks better.
The one aesthetic thing about ss bikes that baffles me is they produce a lovely looking trellis frame and then stick-on a very basic box section afterthought. It's almost as if they got to the end of their budget before the bike reached fruition, and had to hunt about for the cheapest get-out.

I'm never likely going to push the bike to its limits on the road, (quite honestly how many actually do). I recall x seeing a 1000ss it was red, so was the frame. It really looked the must nuts, and a matching sssa would set it off perfectly.

I've great respect for Foggy, he did some incredible things on his bikes - both positive, and sometimes negative. I think it was Casey Stoner that said (something along the lines) anyone can ride a good bike badly, but it's hard to ride a good bike better. There have been enough jockeys trying, but none of them got anything like he did from his Duke.

DrD
23.11.2015, 01:54 PM
I have ummed about imprioving the arm on my 900. I like tihs http://www.emotouk.com/ducati/motocorse/swingarm.htm
I dont like the price!

Slower than my shadow
23.11.2015, 05:28 PM
I have ummed about imprioving the arm on my 900. I like tihs http://www.emotouk.com/ducati/motocorse/swingarm.htm
I dont like the price!

Nice bit of kit, as you've mentioned very pricey.

Slower than my shadow
23.11.2015, 07:57 PM
That's a cool looking piece of kit even for a double sided swingarm. But the price is w-a-y t-o-o h-i-g-h

DrD
23.11.2015, 08:07 PM
Back on track this is about half the price for the 900: http://www.ebay.co.uk/itm/DUCATI-900SS-900-SS-SUPERSPORT-METMACHEX-POLISHED-AND-BRACED-SWINGARM-/172004889206?hash=item280c4a5276:g:--AAAOSwMmBV3vKZ

http://i.ebayimg.com/00/s/MTE3MFgxNjAw/z/--AAAOSwMmBV3vKZ/$_57.JPG

DrD
23.11.2015, 08:08 PM
Back on track this is about half the price for the 900: http://www.ebay.co.uk/itm/DUCATI-900SS-900-SS-SUPERSPORT-METMACHEX-POLISHED-AND-BRACED-SWINGARM-/172004889206?hash=item280c4a5276:g:--AAAOSwMmBV3vKZ

http://i.ebayimg.com/00/s/MTE3MFgxNjAw/z/--AAAOSwMmBV3vKZ/$_57.JPG

Vacant Possession
24.11.2015, 07:05 AM
"SSSA's weren't Foggy's favourite and proved to chew up tyres and diminish the handling"
Read more: http://www.visordown.com/forum/workshop/metmachex-a-tale-of-woe-b12-owners-in-particular/18853.html#ixzz3sF68T1ow
Very Bad News! I read this aghast!

My own experience with Metmachex has been good - although I simply bought a contemporary off-the-shelf part. It offered a better than standard chain adjustment system, is very light and beautifully made. It also uses its own needle roller bearings and needs no maintanance - well, not so far. This is in contrast to bushes & pin arrangement in bevels which although it works well, it does need to be carefully reamed to match the pin & bushes, does wear and does need greasing etc.,

I notice they haven't seen a need to change the chain adjustment eccentric in that lovely belt drive 900SS swinging arm, it's exactly the same as mine!

Perhaps their off the shelf stuff is OK but they aren't set up for custom mods.

Here it is after 30 years in storage...
http://i907.photobucket.com/albums/ac274/scandalman/Ducati/900GTS/DSCF0942-1.jpg
... and after a clean up:-
http://i907.photobucket.com/albums/ac274/scandalman/Ducati/900GTS/Suspension/DSCF1029.jpg
http://i907.photobucket.com/albums/ac274/scandalman/Ducati/900GTS/Suspension/DSCF1030.jpg
... and re-anodising of the eccentrics in gold to match the colour scheme (Observation: narcissist!)
http://i907.photobucket.com/albums/ac274/scandalman/Ducati/900GTS/Assembly/DSCF1338.jpg

Drumnagorrach
24.11.2015, 08:19 PM
In August I bought a S2R 1000 as replacement for a crashed M900ie,although I love the new bike ,it doesn't feel quite as solid at the back end as the old one. I feel defects in the tarmac more than on the double sided swinging arm ,it could be the different tires ,but logic tells me that a single sided swinging arm isn't going to be as rigid as a double and even if I did need to do quick tire changes ,the exhaust gets in the way and has to be taken off anyway.

Slower than my shadow
27.11.2015, 10:28 AM
In August I bought a S2R 1000 as replacement for a crashed M900ie,although I love the new bike ,it doesn't feel quite as solid at the back end as the old one. I feel defects in the tarmac more than on the double sided swinging arm ,it could be the different tires , ... .. . .
If you're getting more feedback from the road through the bike, surely that's a good thing? I'm not in any hurry to dismount any of my bikes whilst they're still moving, but I'd rather feel something coming back through the bike, at least I'd have time to interpret the danger and back - off - rather than be dumped with no warning.


.. . . . ... . . ,but logic tells me that a single sided swinging arm isn't going to be as rigid as a double and even if I did need to do quick tire changes ,the exhaust gets in the way and has to be taken off anyway.
All other things being equal (meaning bearings, tyres & pressures, component condition), the single sided arm is an ally casting, this will always be more rigid than ally tubing as used on double sided swing arm. When you look at the component bearing surface areas the single sided is equal or greater in every area (excuse the pun).



.. . . . ... . . and even if I did need to do quick tire changes ,the exhaust gets in the way and has to be taken off anyway.
I was looking at some cans that sit higher or under the seat but clear of any tyre contact.