single speed ratio ?

If you are talking about off road riding then the norm is 52" (2/1) so you would want a 21 tooth
rear. When I used to ride on the road on a fixed wheel I used to ride in the mid 70's. My botched
single speed is in pieces as the moment but it was a 32 front on a 16 rear. My current bike I have
changed from a 21 gear to a 7 gear and I took off the outer and inner rings so am again left with
a 32 front.

BTW with a 52" gear you have to either spin like crazy or freewheel down hills.

--
David Brown :o) kitemap.co.ukstackOpen ↗

My middle chainring is knackered so I'm going to use the outer 42, however, there is an option of
the inner 26.

If I keep to the 2:1 ratio are there disadvantages choosing one of the others ?

C

David Brown :o\) said:

If you are talking about off road riding then the norm is 52" (2/1) so you would want a 21 tooth
rear. When I used to ride on the road on a fixed wheel I used to ride in the mid 70's. My botched
single speed is in pieces as the moment but it was a 32 front on a 16 rear. My current bike I have
changed from a 21 gear to a 7 gear and I took off the outer and inner rings so am again left with a
32 front.

BTW with a 52" gear you have to either spin like crazy or freewheel down hills.

--
David Brown :o) kitemap.co.ukstackOpen ↗

"Carlos Fandango" <[email hidden]> wrote in message "]news:[email hidden]...

Quoted message said:

My middle chainring is knackered so I'm going to use the outer 42, however, there is an option of
the inner 26.

If I keep to the 2:1 ratio are there disadvantages choosing one of the others ?

The 26/13 combination will reduce weight and use a neater chain length but with quite a large
crossover angle on the chain. The front 26 will probably wear out quite quickly.

The 42/22 will again give a non straight chain line but the sprockets should last longer.

Buy a new 32 tooth sprocket. Get the best chain line.

John

Carlos Fandango said:

I'm planning to convert an old hardtail to single speed. The front ring has to be a 42, so what
should i use on the back ?

My single speed has 44/18 - quite difficult on steep hills but I still pass many a lycra clad
'racer' on it :-)

"Eatmorepies" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

The 26/13 combination will reduce weight and use a neater chain length but with quite a large
crossover angle on the chain. The front 26 will

probably

Quoted message said:

wear out quite quickly.

Not only that but you will go through chains like butter.

Quoted message said:

The 42/22 will again give a non straight chain line but the sprockets

should

Quoted message said:

last longer.

And so will the chain.

Quoted message said:

Buy a new 32 tooth sprocket. Get the best chain line.

Agreed.

--
David Brown :o) kitemap.co.ukstackOpen ↗