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Anyone know the std length of a Drive Belt of an ST?

Marek

Member
Does anyone know the external length of the belt no. 705501576 for Spyder ST Ltd? It seems mine is longer than it should be,,,
 
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Do you have a gauge to check it? What are you riding? How long have you had it? How many miles have you put on it since you last checked the tension? You shouldn't check it with your hand.
 
Do you have a gauge to check it? What are you riding? How long have you had it? How many miles have you put on it since you last checked the tension? You shouldn't check it with your hand.

that's all true....i just asked about the outside length of the belt
 
Do you have a gauge to check it? What are you riding? How long have you had it? How many miles have you put on it since you last checked the tension? You shouldn't check it with your hand.


Weeelllll.... That's not really an absolute 'shouldn't'! :rolleyes:

A 'rough guide' to check your Spyder's belt tension by hand is to try and twist the belt so that the teeth are pointing up ^ instead of down v about midway along the top chord of the belt. If you can only twist it 90°, so that the teeth point straight out toward you <, then the belt is somewhere near the correct tension; if it twists less than that, so the teeth never really get as level as pointing towards you, then it might be too tight; while if it twists too much more, so that the teeth do point close to or even beyond fully upwards ^, then it's likely too loose! :lecturef_smilie:

And IIRC, there is actually a 'deflection' method that's been published too, with specific measurements from the last tooth touching the rear sprocket so that you measure the deflection in exactly the right position, and then a deflection measurement range... So you can get a reasonably good idea of your belt tension being in the right ball-park if you're measuring by hand, but yes, there are devices available, like the Kriket II, that are a whole lot more reliable, consistent, and less subjective, if you can get one! ;) I think BajaRon might sell them & may even ship them o/seas too. :thumbup:
 
Peter - The first method is easy, so I'll try that. However, the belt may have stretched and tightening it won't help much, as it's weakened and may break...
 
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Some of that may be true about weakened, but you would have to have a LOT of miles on that belt before I would worry about it being junk. Back to what I first asked what is your ride and how many miles? Help us, help you.
 
Peter _ The first method is easy, so I'll try that. However, the belt may have stretched and tightening it won't help much, as it's weakened and may break...

Not saying that's impossible, but I don't think we've heard here on the Forum of any Spyder belts actually breaking without externally caused damage, and even with externally caused damage, there's been very few! Neither have we heard of any stretching too much for that matter!! :rolleyes:

Some of that may be true about weakened, but you would have to have a LOT of miles on that belt before I would worry about it being junk. Back to what I first asked what is your ride and how many miles? Help us, help you.


So I agree with Mikey on this. ^^ :agree:

I've seen a few belts that've worn the teeth on the sprockets down to nubbins rather than the belts being worn out or stretched, and those were original fitting belts on Spyders that had something like 200,000 miles up and were still functioning with the standard belt tensioners! They really are pretty strong belts, and generally, they can really take a fair bit of use & abuse without too much sign of wear &/or stretching, but I guess anything is possible, even if it is highly unlikely!! :dontknow:
 
Some of that may be true about weakened, but you would have to have a LOT of miles on that belt before I would worry about it being junk. Back to what I first asked what is your ride and how many miles? Help us, help you.

It's a 2013 spyder st ltd with 56k km
 
You're probably right - respect for your experience and knowledge - but I wonder why it stretched so much, bends more than 90 degrees...
There is no tensioner, but maybe an accessory tensioner would be better.
 
You're probably right - respect for your experience and knowledge - but I wonder why it stretched so much, bends more than 90 degrees...
There is no tensioner, but maybe an accessory tensioner would be better.

There IS a belt tensioner, it's the bolts built into the end of each swing-arm - on Spyders, while many do INCORRECTLY call them 'tensioners', those little roller jobbies that are held by a spring loaded arm and roll on the top of the belt ARE NOT TENSIONERS - they are vibration dampeners, and while they can help reduce any vibrations felt between about 110 & 130 kph, they can also destroy your belt pretty quickly if they fail!! And they have been known to - often, especially if not maintained &/or replaced regularly! :gaah: There are other ways of reducing belt vibrations, often involving setting the belt tension correctly by using the adjustable slides in the ends of the swing arms that are tightened/loosened by the bolts found back there! :lecturef_smilie:

We can't show you the results page of a search here, so if you want to find out more about setting your belt tension correctly, simply type 'belt tension' into the Search field up toward the top right of the page; then tick the 'Search Titles Only' box in the drop-down list that'll appear below what you've typed; and Submit the Search - you can pretty much always disregard anything that has a title with the word 'tensioner' in it, cos they are usually (& erroneously! :cus: ) referring to those belt roller DAMPENERS, not the real tensioners; and spend some time reading thru the other threads that are discussing how to set your belt tension and alignment properly - it can be a fiddly and frustrating experience to get it all exactly right, but if you can get down there to do it and you know which end of a screwdriver to hit & which end of a spanner to spin, then you should be able to do it yourself! :thumbup: - I really doubt your belt has stretched sooo much that it now can't be tensioned properly!! ;)

That said, if anyone has ever had the rear wheel off, and didn't know those tensioners were in the ends of the swing arms, they are loose & can fall out, so there is a possibility of that, but you should be able to see the holes where the missing parts should go; and I have seen a couple of Spyders where whoever assembled/re-assembled them managed to miss looking at the belt tensioners entirely & either left them very loose or didn't tighten the axle tube properly at all, but usually, that sorta thing means the Spyder either doesn't go at all, or the belt slips A LOT and sounds like a machine gun when it does slip whenever you try to accelerate. :shocked: Mind you, that slip & noise is also a sign of worn teeth on the belt &/or sprockets too; but like I said earlier, that sort of wear doesn't usually happen without a WHOLE LOT of miles being done to cause it! nojoke

Still, it sounds very much to me like you need to do some reading, maybe watch a vid or two, and then get down to adjusting your belt tension - Good Luck! :cheers:
 
Thank you for your support and helpful information. In my Country, Motorcyclists (Riders) greet each other by writing LwG (Lewa w Gore) which means Left Up.
So LwG. :riding:
 
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