Silver Star gearing.

Vehicles equipped with the 500 cc Rotax engine

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Silver Star gearing.

Postby DrGonzo » Thu Feb 11, 2016 1:58 pm

I am going to replace my 18T engine sprocket with either a 16T or 15T. I know the 16T is a popular mod and I am leaning toward it, just wondering if anyone has tried the 15T sprocket and what the results were.
Thanks,
Brad
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Re: Silver Star gearing.

Postby DAVID THOMPSON » Thu Feb 11, 2016 10:59 pm

mine i changed from 18 to 17
and its still a bit tall
15 will ware fast and put a lot of pressure on the output shaft bearing
dave
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
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Re: Silver Star gearing.

Postby DrGonzo » Fri Feb 12, 2016 8:43 am

Good info. I will just go with the 16T.
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Re: Silver Star gearing.

Postby DrGonzo » Tue Feb 16, 2016 10:18 pm

Turns out my silver star has a 17T sprocket just like my owners manual said. It should, so now I am back to wondering if a 16T will give me the acceleration I am looking for. Maybe it won't rain tomorrow and I can tell a lil
Bit about the powerband now that my tach is working.
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Re: Silver Star gearing.

Postby MZCountryRider » Wed Feb 17, 2016 9:19 am

I put a 16t on my Silver Star and it made a big improvement over the 17t. I could go uphill into a headwind without losing speed even at full throttle. Acceleration was improved, gas mileage virtually unchanged. Revving a bit higher at highway speeds, but not by much.

Rear tire size will have an effect as well. The stock 110/80-18 size isn't widely available, so I used a 110/90-18. Taller sidewalls/larger circumference made the effective gearing a bit taller.
Last edited by MZCountryRider on Fri Feb 19, 2016 9:04 am, edited 1 time in total.
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Re: Silver Star gearing.

Postby DrGonzo » Thu Feb 18, 2016 2:40 pm

Thanks, I am going to go with the 16.
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Re: Silver Star gearing.

Postby DAVID THOMPSON » Thu Feb 18, 2016 6:23 pm

there are a few scooter rear tires in the 110/80x16 size but hard to find any dealers with them in stock
headenu has a k44 snow tex in europe but no one seem to have any in usa
dave
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
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Re: Silver Star gearing.

Postby DrGonzo » Fri Feb 19, 2016 3:39 pm

DAVID THOMPSON wrote:there are a few scooter rear tires in the 110/80x16 size but hard to find any dealers with them in stock
headenu has a k44 snow tex in europe but no one seem to have any in usa
dave



I was referring to a 16 Tooth Sprocket. I will be fitting some Bridgestone BT45s in 90/90-18 and 110/80-18.
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Re: Silver Star gearing.

Postby DAVID THOMPSON » Fri Feb 19, 2016 5:04 pm

mine is the saxon tour 500 and has a 16 inch REAR which is hard to find
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
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