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General Category => General Discussion => Topic started by: fotoguzzi on July 20, 2016, 08:33:30 PM

Title: NGC Drive Chain slap. NGC
Post by: fotoguzzi on July 20, 2016, 08:33:30 PM
Miss my shaft drive after I see this.. is it normal for a chain to slap around like this?

https://www.youtube.com/watch?v=cxkszWGICD8&feature=youtu.be

I have the slack pretty close to what the book calls for..
Title: Re: NGC Drive Chain slap. NGC
Post by: nc43bsa on July 21, 2016, 03:10:24 AM
From what I've seen in the past, yes, it's fairly common, especially on long-travel swingarms.
Title: Re: NGC Drive Chain slap. NGC
Post by: Perazzimx14 on July 21, 2016, 05:12:12 AM
Miss my shaft drive after I see this.. is it normal for a chain to slap around like this?

https://www.youtube.com/watch?v=cxkszWGICD8&feature=youtu.be

I have the slack pretty close to what the book calls for..

Normal.
Title: Re: NGC Drive Chain slap. NGC
Post by: ken farr on July 21, 2016, 11:07:48 AM
WOW.

I have never seen that perspective before, nor have I looked.. :rolleyes:

Is the chain actually making contact with the swing arm at times ????

kjf
Title: Re: NGC Drive Chain slap. NGC
Post by: Bisbonian on July 21, 2016, 11:50:56 AM
WOW.

I have never seen that perspective before, nor have I looked.. :rolleyes:

Is the chain actually making contact with the swing arm at times ????

kjf

There are plastic guides on the swing arm, they need to be replaced occasionally as the chain wears grooves in them. If let go long enough, I've seen pictures of grooves worn through and into the swing arm.
Title: Re: NGC Drive Chain slap. NGC
Post by: Perazzimx14 on July 21, 2016, 11:57:54 AM
Here's a drag bike view:

https://www.youtube.com/watch?v=u6ZsWwQ072E
Title: Re: NGC Drive Chain slap. NGC
Post by: fotoguzzi on July 21, 2016, 12:00:21 PM
that was cool! thx 4 posting.
Title: Re: NGC Drive Chain slap. NGC
Post by: lucky phil on July 21, 2016, 04:30:34 PM
It looks like the bike is a 650 single and unless you know how fast it was being ridden and importantly on or off the throttle its hard to say. On the throttle the upper chain run is tight and the lower is where the slack is. Assuming the bike is on the gas and not being lugged along then I'd put my money on a chain with a tight spot in it. fairly common on a chain tha'ts done a lot of miles. It shouldn't be like that though with a decent chain and ridden sensibly.

Ciao