Chain tight spot

[scumdog]

Could someone post a pic of a tightspot on a chain. Im not too wise on what they look like.

As one dude said; jack up the rear of your bike and spin the rear wheel slowly a little at a time and check your chain 'slackness' between sprockets at regular intervals of say 200mm (8") of chain travel.

If you have a 'tight-spot' you'll notice the chain seems tight when the rear wheel is in some positions and slack in others.

[denill]

Yeah, with a year or two in the trade, I go with the - chains don't stretch, they wear.
If you have a tight spot, get a new chain quick or it will stuff your sprockets as the amount the pitch has increased will be shaved from both sprockets.

So if your chain is 'worn', check the sprockets for wear and if apparent, replace them both. Or the new chain will become like the last one very quickly.

This thread reminds me why I love shaft drive

[denill]

This thread reminds me why I love shaft drive

This thread also makes me realise how stuck in the sand motorcycle construction is......... Who the fuck would buy a car that had chain and sprocket drive?????????

It is because ostritch-like motorcyclists tastes evolve sooo verrrry slowly. The fully enclosed Vincent is a great example. They went broke trying to market it but 50 years later motorcycle design is slowly moving in that direction.

BUT manufacturers have a bet each way by marketing 'nakeds' for those who want to stay in the last century. Manufacturers HAVE to be aware of market forces - at their peril!!!!!!!!

[denill]

There's a pretty good explaination (including diagrams) of chain wear here: http://pardo.net/bike/pic/fail-004/000.html

Hey thanks for that. Was too lazy to read it before and now that I have I reckon that although it is a bit heavy, it should be made compulsory reading for motorcyclists (who have chain drive bikes).

[imdying]

This thread also makes me realise how stuck in the sand motorcycle construction is......... Who the fuck would buy a car that had chain and sprocket drive?????????

The latest CVT transmission are bugger all more than a belt/chain drive....

[denill]

The latest CVT transmission are bugger all more than a belt/chain drive....

Uhh, and do they fit Scott oilers too????

[imdying]

Other than being argumentative, I don't see your point?

[denill]

Other than being argumentative, I don't see your point?

It is probably more likely that - you don't want to see the point.
BUT would you see the point if I wrote. There is no comparison between the two methods of transmission. One is out of the ark and one isn't. You take your choice.

[Ixion]

This thread also makes me realise how stuck in the sand motorcycle construction is......... Who the fuck would buy a car that had chain and sprocket drive?????????

It is because ostritch-like motorcyclists tastes evolve sooo verrrry slowly. The fully enclosed Vincent is a great example. They went broke trying to market it but 50 years later motorcycle design is slowly moving in that direction.

BUT manufacturers have a bet each way by marketing 'nakeds' for those who want to stay in the last century. Manufacturers HAVE to be aware of market forces - at their peril!!!!!!!!

Frazer and Nash made a car with chains and sprokets.
They went like rockets
But would they if
They'd meade 'em with a diff ?

Chain drive is still more efficient at power transmission (assuming the chain and sprocket are in good condition, a big assumption) than shaft drive. So it is used on racing motorcycles.

15 or 20 years ago , there was a big move to shaft drives, all the manufacturers bringing them out.

Then motorcycling became obsessed with race replicas (well, Jap motorcycling anyway). Race replicas sort of implied chain drives (lighter, less power loss). Whether the difference was material on a road bike is another matter.

[quickbuck]

Uhh, and do they fit Scott oilers too????

No, the belt baths in the oil.

[quickbuck]

I shouldn't think either would attract more grit than non-flick chain lube, grease or any other chain lube product for that matter. I think WD40 is wax based so may not even have an the same effect on o'rings as CRC5.56 after all it's only a "possibility" that damage may occure. There's no concrete evidence from the little research I've done on the subject. I must add having used both products around other rubber components on my ol beasties to loosen up bits I've yet to see any adverse affects.

Yeah, you may be right there bonez.
It maybe that I was told a little white lie 14 years ago by a grumpy old SGT so the motorcyclists didn't depleate the stock of 5.56.

My Suzuki book (for my 98 GSX) said to use heavy motor oil, so I stopped buying cans of goop, and just used engine oil. Did the biz on the GSX, and works equally as well on the CBR. I have a 4 litre pack of masport oil to use (on the mowers,and the bike). Works out much cheaper, as it is 4 litres of oil for the same price as one and a half spray cans.

[imdying]

It is probably more likely that - you don't want to see the point.
BUT would you see the point if I wrote. There is no comparison between the two methods of transmission. One is out of the ark and one isn't. You take your choice.

Not really, they're both chain drive. Sure the CVT uses some pretty flash manufacturing processes, but that'd be overkill on a bike anyway. Chain drive is used on bikes because the alternatives have no benefits... it's light, simple, and quite efficient. Other than lack of (lets face it, quite simple) maintenance, shaft drive brings bugger all to the table.