Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > Monster swingarm options

[ells]

Originally Posted by 848spence

Oh right do you want to sell it?

Soon as I can its going on the bike. Hopefully in time for Oulton. I am not sure its value for money in the weight reducing stakes.

Mark

[Jolley]

It isn't just the weight... It is a swinging weight. My rear was much more stable after the switch (probably because the swingarm wasn't slowing the reaction of the rear suspension so much).

[ells]

Originally Posted by Jolley

It isn't just the weight... It is a swinging weight. My rear was much more stable after the switch (probably because the swingarm wasn't slowing the reaction of the rear suspension so much).

That makes sense about the swinging weight. Never thought of that.

If I can stabilise my rear I will be very happy

Cheers
M

[antonye]

Sprung vs Unsprung weight, innit.

Removing mass from rotating components - wheels, brake disks, sprockets, chain, tyres (where allowed) - has a much better effect as it reduces the energy required to rotate them so in theory you should get better acceleration, improved handling (due to lower centrifugal forces), etc.

[ells]

Thanks,
never thought of that. So if you swapped twin dosc for single disc with the same stopping performance then you wouls not only get the weight advantage but it is also a benefit as its the unsprung (I think) weight.

Thats made me happier about buying the swingng arm!
Cheers
M

[bradders]

Originally Posted by ells

Thanks,
never thought of that. So if you swapped twin dosc for single disc with the same stopping performance then you wouls not only get the weight advantage but it is also a benefit as its the unsprung (I think) weight.

Thats made me happier about buying the swingng arm!
Cheers
M

which is why I went 1 disc - 5kg off was worth doing!

[skidlids]

Originally Posted by bradders

which is why I went 1 disc - 5kg off was worth doing!

Before considering Alloy arms, I was considering disc weights a few years back as Bradders says its worth doing

I had already given up on the single disc option so couldn't save as much weight as Paul mentions. So I went to twin discs.

Prior to 2008 we had to use OEM discs from any production Ducati and there was some weight savingss to be had here, with the heaviest discs being those that were fitted as standard to the 600 Monsters and Supersports where as discs from later (say post 1999) were lighter

In 2008 I altered the rules so instead of the calipers being Free and the Discs OEM, I swapped it so the Calipers had to be OEM from a Production Ducati and Discs were free. Opening it up to after market discs such as EBCs, Braking, Galfer etc.

Andy Pike tells me his Armstrong Discs not only saved weight but also perform very well, the same could be said of the Braking Waveys that I run on one of my sets of wheels