Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > Lack of acceleration possible Eng swap

[Lee M]

Hi Kev, I am unsure. I have looked at the embossed date stamp which looks like 93, the cylinder head has 8S, the belt adjusters are on the barrels and it has the rounded belt teeth.
perhaps I should try a 44 rear sprocket?

[skidlids]

Originally Posted by Lee M

Hi Kev, I am unsure. I have looked at the embossed date stamp which looks like 93, the cylinder head has 8S, the belt adjusters are on the barrels and it has the rounded belt teeth.
perhaps I should try a 44 rear sprocket?

8S Heads makes it the 1999 to 2001 model, so standard gearing on the road would have been 15/46 on the Monster, they didn't do a faired SS version with that engine but if they had the gearing would have been 15/44 as standard

[Lee M]

Thats interesting as I am running a 15 front 48 rear set and its still slow. Just have to accept that "not being shy at a buffet" has finally caught up with me. This is where I need to say "its not all about the winning; but the taking part that counts". It won't stop me from enjoying myself and gives me a plausible excuse when I lose to Stafford. Thanks for everones help, see you at Snetterton.

[skidlids]

48T rear is going to be way to big for Snetterton

Go for a smaller rear and get more out of each gear

[Lee M]

I am not racing at Snetterton due to my family holiday a week later. But from the track day I day there about 2 weeks ago I didn't manage to grab 5th gear on the straights unless I short shifted and Mark No 81was making at least 30 meters on both straights on standard gearing on a 1995 600SS.

[SeeleyG50]

Jeez Lee. Have you actually got around to setting up/dyno-ing the engine yet? A simple dyno run would/will reveal if all is well. Count the teeth on the primary gears to check what ratio you have. You can't re-bore Ducatis in the conventional sense! If the original honing marks have disappeared, then the bore is probably shagged (technical term).

[Lee M]

Hindsight is a wonderful thing. I original said to myself that I would run the bike on a dyno and that would prove if the acceleration problem was the engine or me. But the logistics of the dyno test against having a compression tester at hand in my garage didn't equal out.
I suppose this is where it all started to go wrong. Patients is a virtue and I went "bull headed" into stripping down the engine on the back of the compression test instead of running a dyno.
Lesson learnt.