What is the best pipe to install on a stock SR50s for all around diveability other than stock?
What is the size or call numbers for the drive belt if not going to a mother honda?
Last but not least; I hear people talk about metric vs ? tire sizes. If 3.50x10 is the largest that will fit the SR50, is there a size between 3.00x10 and 3.50x10?
SR50 Pipe
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- Wheelman-111
- Moderator

- Posts: 10683
- Joined: Wed Oct 22, 2008 5:09 pm
- Location: Deepinnaharta, Texas
Oddball Tires
Greetings:
The only thing that comes up in a search for 3.25x10 is an inner tube from a Vespa site. 90/90x10 should be about 3.54" wide, but I've heard tell that they're a little narrower in fact than 3.5s. I have no direct knowledge. ANyone with a set mounted and calipers that could measure?
HTH
The only thing that comes up in a search for 3.25x10 is an inner tube from a Vespa site. 90/90x10 should be about 3.54" wide, but I've heard tell that they're a little narrower in fact than 3.5s. I have no direct knowledge. ANyone with a set mounted and calipers that could measure?
HTH
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
- Wheelman-111
- Moderator

- Posts: 10683
- Joined: Wed Oct 22, 2008 5:09 pm
- Location: Deepinnaharta, Texas
Belting
Greetings:
Standard NB-50 AF05 Belt is listed as 15.5 mm. in the Service Manual. Confirmed by measuring my new belt from Honda-san.
The belts don't wear all that quickly because they're always "engaged" and the slip happens at the clutch. Unlike snowmobiles, where the clutch releases and grabs the belt itself - 3-4 belts per season was typical.
HTH
Standard NB-50 AF05 Belt is listed as 15.5 mm. in the Service Manual. Confirmed by measuring my new belt from Honda-san.
The belts don't wear all that quickly because they're always "engaged" and the slip happens at the clutch. Unlike snowmobiles, where the clutch releases and grabs the belt itself - 3-4 belts per season was typical.
HTH
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH

