08-05-2014, 09:34 PM
Flynrider, you did good on your Nighthawk chain. I think most original chains back then were generally good for about 12,000 miles.
I disagree ( respectfully) about the valleys between teeth getting deeper. As chains stretch they try and climb up over the top of the tooth, elongating the valley towards the front and eventually making the top of the tooth curved and pointy.
When I worked in the industry we would have guys come in and say their clutch was slipping, and an inspection would show the rear sprocket so worn, there were nothing but nubs left where sprocket teeth used to be. Seriously the teeth would be worn clean off the sprocket, and the chain would have nothing to grab.
I disagree ( respectfully) about the valleys between teeth getting deeper. As chains stretch they try and climb up over the top of the tooth, elongating the valley towards the front and eventually making the top of the tooth curved and pointy.
When I worked in the industry we would have guys come in and say their clutch was slipping, and an inspection would show the rear sprocket so worn, there were nothing but nubs left where sprocket teeth used to be. Seriously the teeth would be worn clean off the sprocket, and the chain would have nothing to grab.