Bimota Forum

TVRRICH · Joined: 05 Feb 2016 Posts: 211 Location: Coventry UK

I have been thinking about fitting an Oberon clutch slave cylinder to my DB2 as i understand the action is lighter and better ( i have a problem with my left wrist/ hand), i was wondering if anyone else on here has done this. The room between the engine and fairing looks tight, i was wondering if the oberon cylinder sticks out from the engine any further than the standard Ducati one.

2bims · Joined: 03 Apr 2010 Posts: 7289

You should be fine rich yes...they are lighter to pull....but...what master cylinder or levers do you have?...if you are still on the old dog leg and black coffin pot brembo then change for gold series or radial...adjustable levers help also...maybe also change the clutch line....old ones can expand...and wear so less applied pressure in activating the clutch rod....if ordering oberon be sure to spec the engine....some need an extra piece pushing inside the unit to enable the clutch to disengage....upgrade all and fresh fluids....bleed the master off the bike. And its chalk and cheese..

TVRRICH · Joined: 05 Feb 2016 Posts: 211 Location: Coventry UK

Thanks for the reply 2 Bims, yes its still on the standard master and lever. Will give it a go .

welshlamb · Posted: Wed Jan 15, 2020 10:34 pm Post subject:

Had one fitted to my DB2 SR. No problems!
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Not as many bikes as I would like and already too many to keep up with!

TVRRICH · Joined: 05 Feb 2016 Posts: 211 Location: Coventry UK

Thanks Welshlamb, how much did it make the lever action lighter

welshlamb · Posted: Thu Jan 16, 2020 10:18 pm Post subject:

TVRRICH · Joined: 05 Feb 2016 Posts: 211 Location: Coventry UK

Thanks welshlamb, will definitely give it a go

brian · Joined: 22 Aug 2011 Posts: 3769 Location: Australia

I think the stock slave piston is 26mm and the Oberon slave piston is 29mm, which makes it as lighter pull. I'm planning on fitting the Oberon slave to my DB4
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'99 DB4 #104, '96 SB6 #1165, '94 DB2 J #652, '99 DB4 #088, '08 VTX1800, '93 ZXR750R M1, '95 ZXR750, '95 ZXR750 Race Bike, '94 CBR400rr NC29 Race Bike, '94 CB250, '49 BSA C10 250, '61 BSA A10 650, '89 ZXR750, '91 Ducati 851

TVRRICH · Joined: 05 Feb 2016 Posts: 211 Location: Coventry UK

Hi Brian, i had one fitted in the end, only problem is i havn't had chance to use it since due to the lockdown !!!

brian · Joined: 22 Aug 2011 Posts: 3769 Location: Australia

brian · Joined: 22 Aug 2011 Posts: 3769 Location: Australia

TVRRICH · Joined: 05 Feb 2016 Posts: 211 Location: Coventry UK

Chose the Titanium in the end, looks OK(not that you can really see it behind the fairing) Laughing

brian · Joined: 22 Aug 2011 Posts: 3769 Location: Australia

CNC · Joined: 19 Jul 2013 Posts: 257 Location: Slovenia

You can also additionally add washers under springs of the clutch. When I bought new push plate (Ducati Performance) the washers were included. In general 2 valve engines can have washer under every spring, 4 valve engines under every other spring. I can measure them if you need...
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Bimota DB7, Bimota DB5 Mille, Ducati 916, Ducati M900, Benelli Tornado Tre

Bud977 · Joined: 03 Mar 2013 Posts: 525 Location: Sydney

On the topic of hydraulic clutches, a common mod on FZR engines like in the YB8 is to delete the hydraulic clutch and fit a cable operated clutch, as I have done in my race bike.

Funny how you get some upgrades like the one in this post with a change in slave cylinder size, other upgrades where you go from cable to hydraulic, and other upgrades where you go from hydraulic to cable. What is best? I guess it's just a case of what you prefer.