Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > Gearing

[Spjallen]

Hi Guys,

As I'm new to the DD series I was wondering what gearing people run on a 620 s? Whats the "standard" and what front and rear sprockets do people carry as spares for different ciruits?

[paynep]

Originally Posted by Spjallen

Hi Guys,

As I'm new to the DD series I was wondering what gearing people run on a 620 s? Whats the "standard" and what front and rear sprockets do people carry as spares for different ciruits?

15/44 is standard on a 620Sport.

I would suggest a 14T front and possibly 43-46T rears, but as I'm on a 6speed box its a bit different! B and C Express will be your friend.

There's been a few guys running 620Sports but don't know if they come on here often

Cheers, Paul

[chris.p]

Originally Posted by Spjallen

Hi Guys,

As I'm new to the DD series I was wondering what gearing people run on a 620 s? Whats the "standard" and what front and rear sprockets do people carry as spares for different ciruits?

This should help you, done by our very own Scrute/builder/racer/techyman, Skid's



Chris

[skidlids]

I know nothing

620 standard gearing is

15/44 as Paul said for the 620 Sport (5-speed)
15/46 for the early 620 Monster (5-Speed)
15/48 for the later 620 Monster (6-speed)

few gearing calulators can be found here
http://www.ducatisportingclub.com/sh...ad.php?t=81301

Looks like I need to upload the 6-speed one

On my 5 Speed box last year I ran 14T front and choose between a 44, 45 or 46 rear
This year with a six speed box I often ran a 47T rear but had 46 and 48 on the spare carriers
And ran a 45T at Mallory so as to only use 1st to 5th after running 14/48 in practice and using 2nd to 6th but finding I was a bit busy hoiking gears as I came down the devils elbow

[Spjallen]

This is what I'm after!! Great stuff, 14 44, 45, 46. I'd love to say I understand all the other ratio charts but I've no idea how to use them! (Yet!) Thanks guys.

[bradders]

thats handy, looks like the new bike will have the same gearing as my old one

[848spence]

Originally Posted by bradders

thats handy, looks like the new bike will have the same gearing as my old one

You doing A then? made the decision?

[bradders]

Originally Posted by 848spence

You doing A then? made the decision?

yep

[ells]

Theres also a handy site

http://www.gearingcommander.com/

you can fiddle about with that to your hearts content. I used it to get my head rounf the difference between gearing on different 583 engines.

Mark

[bradders]

I learned something at Doom which none of these calculators could teach me....

flat up the hill before Quarry at around 8.5k (dont rev much higher), I losing upto 800 revs from right kink to left at the top, so I thought I'd have to go large on the rear and over rev...Chris P and Wilf suggested the opposite...as I was then closer to the power at the bottom it would pull me up - bingo and meant I was less out dragged there and stopped Paul flying past me

those things come from experience and knowledge, to which I applaud. If only I had someone like that in my corner