Gearing
 

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

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



Chris:burn:

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

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.

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

You doing A then? made the decision?

yep :D

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

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 :biaggi:

cool see you on the grid ;)

About the only place you will see him, unless you, are very quick. :p :D