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Offline FireBladerDk

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Chain Replacement DIY
« on: 04 July, 2011, 09:04:57 PM »
My son Mikkel and I replaced the chain on my CBF this weekend at 40.400 km.

Having both the Honda Shop Manual and DIY articles by Pharis and Bifferman (Andy) at hand, it was a straightforward DIY job.

Took lots of pictures and will write up a DIY for the DIY section on www.fireblader.dk with focus on the only critical part: how to rivet the chain and check that it's been done correctly.

Added 2011-08-27:
The Chain and Sprockets Replacement DIY article has been finished and can be found here:
http://www.fireblader.dk/i_files/cbf1000chain/mc033.htm

 :041: ... Fred
« Last Edit: 27 August, 2011, 10:57:31 PM by FireBladerDk »

Offline Nuff

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Re: Chain Replacement DIY
« Reply #1 on: 04 July, 2011, 11:12:38 PM »
You mean guessing isn't the way forward?
Take my advice or not, I really don't care. I'm just telling you what I think and would do on my bike.

Offline FireBladerDk

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Re: Chain Replacement DIY
« Reply #2 on: 04 July, 2011, 11:41:11 PM »
With sufficient technical knowledge and experience guessing and intuition is very usefull :028: - - - - -  but only for predicting faults :oldie:  :001:

Offline Bifferman

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Re: Chain Replacement DIY
« Reply #3 on: 06 July, 2011, 09:07:48 AM »
Presumably you count the chain links for length - I changed a bike from belt to chain drive, I was lucky as the bike had a cush drive even with the belt so no mod needed.  BIG problem though in getting the chain length right.

Andy

 :149:

Offline FireBladerDk

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Re: Chain Replacement DIY
« Reply #4 on: 06 July, 2011, 12:02:41 PM »
120 links on both old and new chain yes Andy. And the old chain 2 links longer than the new. The upcomming DIY article will show a beautiful picture of this.
 :002: ... Fred

Offline Nuff

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Re: Chain Replacement DIY
« Reply #5 on: 06 July, 2011, 12:36:18 PM »
The old chain two links longer? It stretched that much?
Take my advice or not, I really don't care. I'm just telling you what I think and would do on my bike.

Offline FireBladerDk

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Re: Chain Replacement DIY
« Reply #6 on: 06 July, 2011, 05:30:53 PM »
Yep - it stretched 2 links:

 :002: ... Fred
« Last Edit: 27 August, 2011, 04:56:24 PM by FireBladerDk »

Offline Nuff

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Re: Chain Replacement DIY
« Reply #7 on: 06 July, 2011, 05:36:48 PM »
Wow.
Take my advice or not, I really don't care. I'm just telling you what I think and would do on my bike.

Offline richardcbf

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Re: Chain Replacement DIY
« Reply #8 on: 06 July, 2011, 05:50:18 PM »
*Originally Posted by FireBladerDk [+]
Yep - it stretched 2 links:

 :002: ... Fred

It's not actually 'stretched' as such (parts are not longer than they were), but, due to wear of the joints the maximum possible overall length is now greater, right?
(No one ever said on their deathbed, "Gee, I wish I had spent more time alone with my computer." Danielle Berry.) http://hmpg.net/

Offline FireBladerDk

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Re: Chain Replacement DIY
« Reply #9 on: 06 July, 2011, 06:43:53 PM »
I think there exists different "stretching" mechanisms making it nescesary to tighten up the chain and ultimately to replace chain and sprockets:
- wear of the joints causing hole diameters to increase and pin diameters to decrease.
- wear of sprockets reducing effective diameter.
- Overload incidents (e.g. clutch started wheelies), causing deformation af chain elements (pins and links).

Now comes the very nerdy part of this post:
Of the 200 links only around (200-(43+16)/2)/2 = 85 equivalent to 42% are defining the distance between the sprockets. Hence the change in sprockets distance should be 2*42/100 = 0.84 links. As one link measures 16 mm, we get 13 mm rear wheel displacement.
The little vear indicator label however only has about 6 mm displacement from new to worn down chain, and this is a factor of 2 from the above calculations!  :087: Hmmmm. ?  :084: You are all invited to elaborate on this!

 :001: ... Fred