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Mugello 225 gearing
Posted:
Sun Apr 09, 2017 8:31 pmby mr mugello
Hi. My set up is a standard SX200 gearbox with a version 1 mugello 225 , 42 mm Ancillotti, 30mm carb. At the moment I have quick acceleration, but no top end, plenty of revs though, having to ride with 3/4 throttle position in 4th. 4th gear seems much too low. What would be the better gearing option if I was to tweak the gearing. Thanks
Re: Mugello 225 gearing
Posted:
Mon Apr 10, 2017 6:17 amby Toddy
People will ask What Front and rear Sprockets are you running ? so a Ratio can be worked out to suit rour set up
Re: Mugello 225 gearing
Posted:
Mon Apr 10, 2017 7:24 amby mr mugello
46 crown and 15 sprocket.
Re: Mugello 225 gearing
Posted:
Mon Apr 10, 2017 7:27 amby mr mugello
Just to add, all gears seem too low, engine seems like it is being thrashed. Petrol consumption is noticeably high.
Re: Mugello 225 gearing
Posted:
Mon Apr 10, 2017 12:23 pmby Toddy
Are you sure Your Clutch or your Cush Drive isnt slipping ??
Re: Mugello 225 gearing
Posted:
Mon Apr 10, 2017 12:56 pmby mr mugello
I don't think so. It pulls well even with pillion . Speedo is a bit wavy, but top end is roughly 65 .
Re: Mugello 225 gearing
Posted:
Mon Apr 10, 2017 1:00 pmby Rich Oswald
Go GP200 (Indian or Italian) with st'd 18/47 sprockets or even 19/46 with an expansion exhaust.
Rich'
Re: Mugello 225 gearing
Posted:
Mon Apr 10, 2017 1:26 pmby mr mugello
Thanks . Would changing just my sprockets, but keeping my sx200 box be a workable option ?
Re: Mugello 225 gearing
Posted:
Mon Apr 10, 2017 1:43 pmby holty
ive just put your details in the gearbox calculator and your final drive ratio is 4.81 to 1 in top gear, if your engine pulls that easy with no slip of the clutch then i would try 1 tooth bigger on the front and see if it will pull ok, you might need a longer chain, depends how stretched the one you have on now is.
Re: Mugello 225 gearing
Posted:
Mon Apr 10, 2017 7:30 pmby mr mugello
Many thanks.
Re: Mugello 225 gearing
Posted:
Mon Apr 17, 2017 3:02 pmby corrado
Rich Oswald wrote:Go GP200 (Indian or Italian) with st'd 18/47 sprockets
Rich'
If I'm reading the OP correctly then this would make it worst. Std SX200 gives 4.82 final drive, which OP thinks is too low, std GP200 gives 5.21. Sticking a 16 tooth front sprocket will give 4.52 which sounds too tall. Not easy to make a small adjustment with an SX200 box, next tallest jump to 4.7 = 16 x 48, then 4.6 = 16 x 47.
Re: Mugello 225 gearing
Posted:
Mon Apr 17, 2017 8:27 pmby Rich Oswald
corrado wrote:Rich Oswald wrote:Go GP200 (Indian or Italian) with st'd 18/47 sprockets
Rich'
If I'm reading the OP correctly then this would make it worst. Std SX200 gives 4.82 final drive, which OP thinks is too low, std GP200 gives 5.21. Sticking a 16 tooth front sprocket will give 4.52 which sounds too tall. Not easy to make a small adjustment with an SX200 box, next tallest jump to 4.7 = 16 x 48, then 4.6 = 16 x 47.
Totally different gearbox though and this is based on what I ran on my version 1 Mugello 225
Rich'