I'm about to change my monza 225 gearbox from a gp 200 to an li 150 gearbox. I'm currently running 47/19. Just wondering if it's a good idea to drop down the front sprocket to 18, what's the best sprocket chain combination for this gearbox?
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Front sprocket recommendations
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Bensmith225
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https://www.scooterhelp.com/tuning/lam.gear.calc.html
as i cant find it on here now.
you will be going from 4.95 a/all ratio to 4.44, quite a drop , will your barrel tune/carb exhaust combo pull it ok ?
why not try 19/46 on the gp box first ?
as i cant find it on here now.
you will be going from 4.95 a/all ratio to 4.44, quite a drop , will your barrel tune/carb exhaust combo pull it ok ?
why not try 19/46 on the gp box first ?
win or lose have a booze
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Bensmith225
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I'm changing the gearbox as I don't like the ratios on the gp200 box, big jump from second to third and barely anything from 3rd to fourth. It's an untuned barrel at the moment with a 30 phbh and a tsr exhaust. It pulls fine at the moment but I'm planning a tour tune on the barrel at the end of the rally season with a 60/110 crank so I imagine it should pull well
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Bensmith225
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Forgot to mention it has full Grp panels so it weighs naff all
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Adam_Winstone
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I hope that you have a good clutch as swapping to the LI box and smaller front sprocket will put the clutch under a lot more strain? Your GP200 19 front is giving the current clutch a very easy life.
Adam
Adam
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Bensmith225
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I've had a nightmare with the current clutch slipping like a bitch but I'm changing it for a cassette clutch so I'm gonna sort all the gearing out at the same time
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garry inglis
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I run li150 46x16 4.9 on both my ts230 with cassette clutch and my rb200 4plate with mb springs and no problems
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Bensmith225
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Seems to be the way to go having spoke to a few people
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