SR50 Pipe

qaz · Post by **qaz** » Mon Feb 16, 2009 2:52 pm

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?

Wheelman-111 · Post by **Wheelman-111** » Mon Feb 16, 2009 3:56 pm

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

veedubh20 · Post by **veedubh20** » Tue Feb 17, 2009 2:42 am

just use honda stock oem belt! last over 2200 miles before change belt.

qaz · Post by **qaz** » Tue Feb 17, 2009 2:34 pm

Veedubh20- I have 9,000 miles on the stock variator and belt now. Belt measures 15mm, but I don't know how wide the original belt is, to compare it. The variator does have some very slight waves in it.

Wheelman-111 · Post by **Wheelman-111** » Tue Feb 17, 2009 3:00 pm

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

maddog · Post by **maddog** » Tue Feb 17, 2009 7:04 pm

stock belt & pipe work just just fine, i do have a rare japan dio zx pipe like new $200

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