Fraz101 wrote: cycle tramp wrote:
Fraz101 wrote:Yes small cog front and rear is a habit i'm going to need to change.
If you spend alot of time on your small front ring, have you ever considered just using one front chain ring, perhaps somewhere between the size of your existing smallest and middle chain ring?
Not something I’ve ever thought about but an interesting point you raise.
Would it be a part I could pick up fairly easily?
And would it help with chain angle?
Apologies for the lack of reply until now, i was thinking about the questions you raised...
To answer your last question first... it may help your chain angle, but only if you know what your favourite gear ratio is for most circumstances, and if you can space your chainring to the cog to match it... and it depends on the width of your  freewheel/ sprocket cluster. The wider (more gears) that you have on the back wheel the greater the angle the chain will be in the highest and lowest gears
To illstrate the point, i'll talk about my set up. I currently ise a 36 tooth chain ring* with a 5 speed freewheel (13 to 28 teeth) which gives me a high of 72 inches and a low of 33 inches (chainwheel teeth divided by sprocket teeth multipled by the size of the wheel)
However this means that for normal road riding my chain is going to be at the high end (smaller sprocket end) of my freewheel. So i mounted my chain ring (on my crank) so my chain runs straight when its on the second smallest cog on my freewheel. By doing this the chain has a slight defection when i use the smallest cog, which i do most of the time and a large defection when i use my low gears, which i use very little.
In answer to your first question, you may need to buy new crank arms and a chain ring, as well as something to keep the chain on the chain wheel. I used a chain guard from SPA cycles, some spacers and a set of long chain ring bolts. Because i was only using one chainring i used a stainless steel one from surly bicycles, as they last longer (and when worn, you can flip them over and use the other side!)
However using just one chain ring does reduce the range of gears that you have which means that you may have to freewheel more often down the hills, go slower if you have the wind behind you, and get off and walk on steep or long hills.
On the plus side having only one gear control does make it easier to use the bike, there's less things to go wrong, and if you use a friction gear control there is less maintenance too :- )