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blowing belts

skidoots

Veteran
Joined
Jan 30, 2008
Messages
26
Location
FREEPORT IL
I did a search on blowing belts found a lot of guys are having the same thing that happened to me.. Two belts in about 100 miles

check you secondary spring for free height mine was short 10mm from stock (75mm)

make shure the clutch off set is in spec. 13.5mm to 16.5mm

I put a new spring in set the clutch to stock specs and rode 150 miles Saturday with no belt blowing. I like my Nytro now...... :-o
 

Yeah come on, 2 belts in a 100 miles, WTF,there has to be a problem... I have almost 1600 on mine and its still in great shape, in fact, I have never blown a belt in about 35 years of riding, just replaced them when I thought they were getting glazed or to thin...
 
I went to a Yamaha demo ride event last winter and had the belt on a fx Nytro shred on me on a ~1 mile test loop.

I've also seen this issue posted here by other members, too.
 
skidoots said:
I did a search on blowing belts found a lot of guys are having the same thing that happened to me.. Two belts in about 100 miles

check you secondary spring for free height mine was short 10mm from stock (75mm)

make shure the clutch off set is in spec. 13.5mm to 16.5mm

I put a new spring in set the clutch to stock specs and rode 150 miles Saturday with no belt blowing. I like my Nytro now...... :-o

How do you set the offset of the clutch??
 
2008FxNytro said:
skidoots said:
I did a search on blowing belts found a lot of guys are having the same thing that happened to me.. Two belts in about 100 miles

check you secondary spring for free height mine was short 10mm from stock (75mm)

make shure the clutch off set is in spec. 13.5mm to 16.5mm

I put a new spring in set the clutch to stock specs and rode 150 miles Saturday with no belt blowing. I like my Nytro now...... :-o

How do you set the offset of the clutch??

By shimming the secondary. Adding or removing shims (washers) behind the secondary.
 
I take a straight edge on the backside of the primary (must be perfectly straight)...then use a mic between the back secondary (closed)and the straight edge...

with the bolt and shims installed on the secondary, there should be some float (if you subscribe in the float theory as set by yamaha) vs fixed theory
 


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