So, just a thought. Stock setup for the M821 is 15/46 (3.07). Would there be a benefit in terms of rotating mass to drop to a 14/43 (3.07)?
I mean, I imagine the weight savings on the front sprocket would be very minimal, but what about the rear? And what are the implications for a chain that is shorter (due to the smaller diameters) in terms of wear? I mean, I can imagine it would lose about 2 teeth minimum over the stock set up.
Thoughts?
Compared to a wheel at 10-15 lbs or a tire at about 15 lbs, both much further out - I'd forget about the rotating weight savings.
In theory, maybe also to some degree in real life, smaller sprockets wear the chain faster.
I support mods, but I think you should otherwise [thumbsup]
Is it over geared for your riding needs?
Quote from: stopintime on April 27, 2016, 02:37:44 PM
I support mods, but I think you should otherwise [thumbsup]
Not looking to do it in place of what I currently have. Just thinking for down the line when they need to be replaced.
Quote from: stopintime on April 27, 2016, 02:37:44 PM
In theory, maybe also to some degree in real life, smaller sprockets wear the chain faster.
I was thinking that too, one of the reasons I asked.
Quote from: ducpainter on April 27, 2016, 02:34:45 PM
Yes...too much. ;D
[laugh]
Quote from: koko64 on April 27, 2016, 02:43:10 PM
Is it over geared for your riding needs?
Not really. That's one of the reasons I wanted to keep the ratios the same.
Smaller sprockets bring the chain closer to the swingarm, possibly causing a rub?
A hard anodized aluminum rear sprocket would be better - less rotating mass and unsprung weight. They look nice too.
Quote from: cencalal on April 27, 2016, 05:10:25 PM
Smaller sprockets bring the chain closer to the swingarm, possibly causing a rub?
A hard anodized aluminum rear sprocket would be better - less rotating mass and unsprung weight. They look nice too.
I'm a commuter, going for longevity.
Quote from: NAKID on April 27, 2016, 05:33:40 PM
I'm a commuter, going for longevity.
If you are happy with your ratios, just stick with what you have, in steel.
You can save weight with a Supersprox or Superlite sprocket and still have steel teeth. Will it make a notable difference? Doubt it.
Play around with this site some:
http://www.gearingcommander.com/ (http://www.gearingcommander.com/)