duckwizard Posted January 18, 2005 Report Share Posted January 18, 2005 I see that some of you have fitted 16T Primary duplex sprocket. How does this compare to the standard 19T. I was going to leave my standard primary at 19T and fit the following 13t Gearbox 64t Rear sprocket 420 chain. What do you think. Quote Link to comment Share on other sites More sharing options...
mattylad Posted January 19, 2005 Report Share Posted January 19, 2005 This will be OK. The advantage of a smaller primary is that you can reduce the size of rear sprocket making it less vulnerable to snagging. Quote Link to comment Share on other sites More sharing options...
duckwizard Posted January 19, 2005 Author Report Share Posted January 19, 2005 If i use the 16 T primary. What sprockets do you guys reccomend using. Bearing in mind the 64 may get snagged. I have at present 17T front and 58 T rear will this be ok. Save me some cash, as these are all relatively new. Quote Link to comment Share on other sites More sharing options...
triton Posted January 19, 2005 Report Share Posted January 19, 2005 One advantage of using a 13T gearbox sprocket is that it gives more clearance for mud/leaves in that confined space. The previous owner of my cub had to strip the engine down because the gearbox sprocket seal was pushed in by debris causing bad oil leak!! For comparison if you go (a)19x49, 16x58 as per standard trials cub the final ratio in 4th is 9.135. (b)16x48,17x58 as you suggest it will be 10.23 final ratio in 4th. ©19x48, 13x64 as per your other option it will be 12.40 final ratio, bearing in mind all 1st ratio's are the same 16 mainshaft 29 layshaft. then the last option will give the lowest ratio. its hot with this anorak on!!!!!!! Quote Link to comment Share on other sites More sharing options...
kenburningham Posted January 30, 2005 Report Share Posted January 30, 2005 Where can you get 16T cranckshaft sprocket and 13T gearbox sprocket from? Quote Link to comment Share on other sites More sharing options...
kenburningham Posted January 30, 2005 Report Share Posted January 30, 2005 Thank you I will email you my address. Quote Link to comment Share on other sites More sharing options...
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