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View Full Version : How light can a flywheel get? Bling and more bling


twpd
21-Mar-2006, 14:35
Flywheel (http://kaemna.de/cms_en/katalog.htm?&view=artikel&artikel=1230)

234g????? I bet it doesn't idle very well! :lol:

Hmmmmm........ ideal for the racer maybe but, not the road bike I think.

I've just been a very bad lad and spent a lot of money. :lol:

keefer
21-Mar-2006, 14:43
I am struggling with that exact item at the moment.
it has no marker for timing. but I have been told it does not matter.
well im just about to go out in the garage and find out

wolverine
24-Mar-2006, 21:28
don't know about how light a fly wheel can be but i'm about to have a ali clutch assembley fitted on mi 900ss:bouncy:
any way was just wondering if i should/need to lightern the other side of the engine too?

[Edited on 24-3-2006 by wolverine]

phillc
24-Mar-2006, 21:47
Looks like we're all playing with those centripedal forces. I've just had a titanium clutch basket fitted.

http://www.mpl-tuningparts.de/

Here's one on eBay:

http://cgi.ebay.co.uk/Ducati-Clutch-basket-TITANIUM-748-916-996-998-749-999_W0QQitemZ8050043925QQcategoryZ10448QQssPageNam eZWDVWQQrdZ1QQcmdZViewItem

skidlids
24-Mar-2006, 21:55
Purchased one of those Alloy flywheels last year for my 955 Corse motor, by the time the starting gear was bolted to it it weighed about the same as the original Corse flywheel so will hopefully be OK.

Davieravie
24-Mar-2006, 22:28
Was there not a post from Shazzam all about flywheels????

Did he not sum up that bike manufacturers spend loads of hours getting these things right only for other people to think that they know best?????

That was my conclusion

FiscusFish
24-Mar-2006, 22:50
And the majority consensus that replied was Shazzam knows a hell of a lot but he isn't always right....

Yeah yeah I know bolt of lightning is going to strike me down where I stand....:devil:

Scotty Monster
24-Mar-2006, 22:54
thats not what i concluded from the 'shazzam conclusion'

Davieravie
24-Mar-2006, 22:54
Just like the majority voted for the Labour party and according to another thread, theyre not right either :rolleye:

wolverine
24-Mar-2006, 23:08
so has anyone got the insight as to wether i need to lightern the other side of the crank to keep it balanced?

Davieravie
24-Mar-2006, 23:21
http://ducatisportingclub.com/xmb/viewthread.php?tid=13978

skidlids
24-Mar-2006, 23:32
I take that when Ducati design the bike they make an allowance for the magnetic load of the alternator when running with lights on and as such have added a bit of extra weight to the flywheel to stop you stalling it during night/day use with the lights on.
If the bike is to be for track use only with no lighting load to worry about than I would have thought you could quite happily run a marginally lighter flywheel. Other things that will be considered when choosing a flywheel weight are valve overlap, compression ratio, piston rock at the top of the stroke.
Best thing is to talk to the experts like JHP and see what advice they give.

nelly
25-Mar-2006, 01:38
Originally posted by wolverine
so has anyone got the insight as to wether i need to lightern the other side of the crank to keep it balanced?

The clutch basket isn't on the crank, so it'll make very little difference to the inertia of the crank.

wolverine
25-Mar-2006, 08:38
cheers dude!

Jools
25-Mar-2006, 13:00
Can't you run some Dukes without a flywheel at all?

Jools
25-Mar-2006, 13:03
DOH !!!

http://www.ducatisportingclub.com/xmb/viewthread.php?tid=26807