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Chain tension ???

  • Thread starter lrm74
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Cant Find A User Name

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Wolfie said:
side stand according to the workshop manual. 30mm of slack
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My workshop manual says sidestand - my owners manual says centre stand :dunno:

40 - 45 mm slack for me - spacer fitted - checked on the centre stand -

after I fitted the spacer I checked the adjustment both ways & then got a mate to check it while I was sitting on the bike -35 mm - never had any issues since - solo or two up.
 
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troubleshooter

Registered User
You can of course do away with all this theorising about setting chain tension with spacers etc by taking the spacer out, setting the chain tension as per the manual and then putting the spacer back in again:yo::yo:
 
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Cant Find A User Name

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troubleshooter said:
You can of course do away with all this theorising about setting chain tension with spacers etc by taking the spacer out, setting the chain tension as per the manual and then putting the spacer back in again:yo::yo:
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Putting the spacer back in WILL alter the chain tension - back to square one
 
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lrm74

Guest
OK so I am not particularly savvy on the technical stuff- so I apologise in advance - but I don't understand this issue of the Spacer ?
People are saying here that the spacer simply raises the seat height - and this makes sense to me - so I would not expect this to affect the chain tension (i.e. seat is moving upwards but surely nothing else moves ??).

Having said that - I am aware from my bike that having a spacer fitted means that on the centre stand - the rear tyre does almost touch the ground, when on a standard bike there would be half an inch clearance - so clearly something is going on ? So my guess is that fitting the spacer means the swinging arm is being forced downwards based on the new longer length of the shock ?

So this must mean that with the bike on C/stand - the swing-arm is sat lower than horizontal (or lower than it would be on a standard bike) - and so more "slack" is provided in that position ?

I guess the only question left on this is "....so how much SLACK is considered correct when you get the chain and cogs in line ? Someone mentioned 5mm in an earlier post - someone else said 18mm - and my recent guess was 20mm.....
 
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the_sad_punk

Registered User
Wolfie said:
so all those who have to slacken their chain after fitting a spacer are wrong as well then??

so what you are saying above is that they should tighten the chain to take up the slack??

yet they all have to slacken it.

as stated before 30mm of slack on the side stand is what i do and as stated above this gives me 40mm on the centre stand.

adjusting the chain changes the wheelbase. adding a spacer increases the seat height

You should care how the chain is adjusted as that is what the OP was about.
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Three people on here have told you your wrong and you are, epically. One of them has forgotten more about than the two of us know about blackbirds. Listening sometimes is wise.

Unfortunately it takes more patience than i have to further demonstrate this. Besides its a very basic concept of triginometery and geometery that you seem incapable of grasping so i wont bother further.

In short do as Jaws says when adjusting chain with a spacer or do as i have suggested ala DID's recommendation and your gravy.
 
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