comnoz said:
..I don't think I ever reached 10,000 miles on a narrowed cast sprocket. Usually that meant one a year. I probably could have done better if I lubed it enough..
Shedding a 100 lbs of your bike would probably help too ..
10000 mls is really not very much , especially considering the work and money involved .
I get more out of aluminium sprockets , probably because I never run one chain to the end , but switch between diff. chains . But like I said in another thread II stopped doing that now .
I posted this picture before :
The sprocket on top has 25000 km ( 15000+ mls) and shows little visible wear , although I consider it worn ..
It is 6mm wide , 40 T . I use a 20-40 ratio ( and yes , I know about prime nrs ..)
I get these sprockets blank ( blind ?) for 20-30$ and cut the holes myself , so cost is hardly an issue .
Mayby off topic , but if you consider changing to 520 , why not go all the way :
ditch that ultra heavy , overcomplicated Norton wheel and buy a complete wheel from some Jap offroader .
You can get these wheels real cheap .
Mine is from a Honda CR500 .
Benefits are legio :
Cheap , easy to change sprockets in any ratio you want .
Disk brake .
Exel rim WM 3 or 4 ( better)
One piece spindle ,evt hollow .
Better choice of tyres .
Some come with real cush drives .
Loose something like 20 lbs of unsprung weight .
etc ...
Just make shure it fits in the swingarm .
Ok , you may have to fabricate some spacers and a speedo drive ( or go electronic ) but you'll have a better bike , and save A LOT on maintenance .
Probably sacrilege for purists ,but I believe they look pretty good on a Commando :
))))))
