2009 Venture RS Reverse/Forward issue

[harleyQc]

FYI
Those three bolts also wear substantially at the tip, often even more than the thickness of the washer. Sometimes they need to be replaced.

good to know! Now ... the belt will stretch over time so when will i know its time to put back the washers on? i mean it never happend to me yet , what will happend ? i presume its gonna slip and not make the sled go foward right?

 

[harleyQc]

I did as you said I'm wondering if someone else has been in the chain case ??

see if the bolts holding the case in place have sign of sratch or that a tool toutched it?!

 

[74Nitro]

good to know! Now ... the belt will stretch over time so when will i know its time to put back the washers on? i mean it never happend to me yet , what will happend ? i presume its gonna slip and not make the sled go foward right?

Oh, belts don't stretch much, if at all. It has more to do with the belt becoming narrower. The washers are 1mm thick and your dealer can also supply you with optional 0.5mm washers for fine tuning. Most of my customers never mess with this stuff, so I usually just replace the bolts if they are worn more than 0.5 mm. That way, I know if they replace the belt with a new one, the machine won't creep or squeal at idle.
If you want to fine tune, usually the stock yamaha belt will be slightly above the top of the sheaves. So use the washers to achieve this. This is a bit easier to check with the clutch off, on your workbench.

 

[harleyQc]

Oh, belts don't stretch much, if at all. It has more to do with the belt becoming narrower. The washers are 1mm thick and your dealer can also supply you with optional 0.5mm washers for fine tuning. Most of my customers never mess with this stuff, so I usually just replace the bolts if they are worn more than 0.5 mm. That way, I know if they replace the belt with a new one, the machine won't creep or squeal at idle.
If you want to fine tune, usually the stock yamaha belt will be slightly above

Oh, belts don't stretch much, if at all. It has more to do with the belt becoming narrower. The washers are 1mm thick and your dealer can also supply you with optional 0.5mm washers for fine tuning. Most of my customers never mess with this stuff, so I usually just replace the bolts if they are worn more than 0.5 mm. That way, I know if they replace the belt with a new one, the machine won't creep or squeal at idle.
If you want to fine tune, usually the stock yamaha belt will be slightly above the top of the sheaves. So use the washers to achieve this. This is a bit easier to check with the clutch off, on your workbench.

Right, they get narrower ...! i had forgot already. I had "planed" to buy a new belt instead of adding washers when my belt is due... Just for the piece of mind in the trails instead of killing the hell outta my used strap...

 

[Snorunner]

good to know! Now ... the belt will stretch over time so when will i know its time to put back the washers on? i mean it never happend to me yet , what will happend ? i presume its gonna slip and not make the sled go foward right?

You will not hit your top speed. Because when the primary clutch fully shifts out. If the belt is to loose it will not ride high enough in the primary. Think of a 10 speed bicycle if you can’t shift the front sprocket onto the bigger sprocket. You will not get the result you expect. That’s my 2 cents. If you really want to understand clutching. You need to get Olaf Aaeen’s book on clutching. I should have. But I found enough on Google to figure it out. I was a Ford Master Transmission Technician. But it still took me many years of building a modified sled to understand. Sled clutching. Turned out my best friend was Thunder Products adjustable clutch weights. Heavy Hitters If I remember right. Should have said when the primary shifts in. The centrifugal force of the weights pull the primary in against the force of the spring, based upon the spring tension and the amount of weight pulling in. The most important spec is your max RPM. You need to watch your tach and know this number.

 

[74Nitro]

You will not hit your top speed. Because when the primary clutch fully shifts out. If the belt is to loose it will not ride high enough in the primary. Think of a 10 speed bicycle if you can’t shift the front sprocket onto the bigger sprocket. You will not get the result you expect. That’s my 2 cents. If you really want to understand clutching. You need to get Olaf Aaeen’s book on clutching. I should have. But I found enough on Google to figure it out. I was a Ford Master Transmission Technician. But it still took me many years of building a modified sled to understand. Sled clutching. Turned out my best friend was Thunder Products adjustable clutch weights. Heavy Hitters If I remember right. Should have said when the primary shifts in. The centrifugal force of the weights pull the primary in against the force of the spring, based upon the spring tension and the amount of weight pulling in. The most important spec is your max RPM. You need to watch your tach and know this number.

I think we are just talking about belt tension when the machine is at a standstill

 

[Snorunner]

I think we are just talking about belt tension when the machine is at a standstill

Good point! But maybe his concern is later when the clutches shift out. But what we really need is good riding conditions so we stop. Spending too much time on here. No insult intended! I am so guilty of this.

 

[74Nitro]

No worries, but the bolts have no effect anywhere else in the shift.

 

[Snorunner]

No worries, but the bolts have no effect anywhere else in the shift.

Makes sense. Thanks for your feedback!

 

[harleyQc]

I think we are just talking about belt tension when the machine is at a standstill

i was wondering what i will notice when my belt will be warn out.... thanks guys !

 

[harleyQc]

yes! here in montreal we are starting to see snow ... cant wait to ride. i only tried it 3 days last year at the end of the season when i bought it .

 

[RobX-1]

i was wondering what i will notice when my belt will be warn out.... thanks guys !

As what was previously stated, the belt will not stretch when worn but will get narrower. So, if you remove the screws and the belt sits in the secondary within tolerance (-0.5mm below secondary edge to 1.5mm above secondary edge), as the belt wears and becomes narrower, it will sit lower in the secondary (i.e. below the -.05.mm tolerance) and will require to you to add the .5mm spacers or 1mm spacers depending on far out of tolerance you are. Also keep in mind that you should also check the belt width as a new belt width is 34.5mm and the belt wear limit width is 32.5mm. If belt width is at or below the 32.5mm width limit, it needs replaced rather than add those spacers back.

 

[harleyQc]

As what was previously stated, the belt will not stretch when worn but will get narrower. So, if you remove the screws and the belt sits in the secondary within tolerance (-0.5mm below secondary edge to 1.5mm above secondary edge), as the belt wears and becomes narrower, it will sit lower in the secondary (i.e. below the -.05.mm tolerance) and will require to you to add the .5mm spacers or 1mm spacers depending on far out of tolerance you are. Also keep in mind that you should also check the belt width as a new belt width is 34.5mm and the belt wear limit width is 32.5mm. If belt width is at or below the 32.5mm width limit, it needs replaced rather than add those spacers back.

thanks alot! great info!