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2,599 Posts
OK .............. I don't really get this gearing lark.
If I remember correctly standard Adventure gearing is 17/42
I currently run 16/45 and find the gearing just about right.
I tried 16/47 and it was great - but with a standard length chain I had wheel clearance issues at the front of the back wheel and it rubbed on the shock guard and on compression caught the wheel arch where the exhaust bulge is. (Basically I needed a 120 length chain). But by fook the bike was lively.
I found with the lowered front sprocket - it wasn't just like a lower gear, it seemed to actually change the torque characteristics of the bike. I suppose that was because I now ran different revs for a given speed and had some 'in-between' gears compared with standard.
Martynho has recently said he has stayed at 17 on the front but gone larger on the rear. I think 17/45. he reckons this stops chain slap and is kinder to the front sprocket and offers a similar gear ration to 16/42
So - I like my 16/45. if I changed to 17/47 how would this compare? I reckon it'd be a similar ratio ......... but how would you expect it to 'feel'?
I have this theory in my head somewhere ........ that depending on whether you change the front or the rear sprocket - although you may end up with the same actual gear ratio - the way it affects the bike will be different. Or am I just bullshitting myself?
All I'm thinking is that I have the 17/47 sprockets so I can easily give it a go. Will it be beneficial to take some strain off the front sprocket?
Thought, comments and ideas please?
Pete
If I remember correctly standard Adventure gearing is 17/42
I currently run 16/45 and find the gearing just about right.
I tried 16/47 and it was great - but with a standard length chain I had wheel clearance issues at the front of the back wheel and it rubbed on the shock guard and on compression caught the wheel arch where the exhaust bulge is. (Basically I needed a 120 length chain). But by fook the bike was lively.
I found with the lowered front sprocket - it wasn't just like a lower gear, it seemed to actually change the torque characteristics of the bike. I suppose that was because I now ran different revs for a given speed and had some 'in-between' gears compared with standard.
Martynho has recently said he has stayed at 17 on the front but gone larger on the rear. I think 17/45. he reckons this stops chain slap and is kinder to the front sprocket and offers a similar gear ration to 16/42
So - I like my 16/45. if I changed to 17/47 how would this compare? I reckon it'd be a similar ratio ......... but how would you expect it to 'feel'?
I have this theory in my head somewhere ........ that depending on whether you change the front or the rear sprocket - although you may end up with the same actual gear ratio - the way it affects the bike will be different. Or am I just bullshitting myself?
All I'm thinking is that I have the 17/47 sprockets so I can easily give it a go. Will it be beneficial to take some strain off the front sprocket?
Thought, comments and ideas please?
Pete