Single Speed

okgo

So seems I can run 1/8 chain which means can get 1/8 chainring in 130bcd but 53 doesn't seem to exist?

okgo

So I reckon I will get a 1/8 chainring and chain and keep the existing freewheel which is a shimano sf-mx30 which can take 1/8 or the stupid 3/32 that genesis have made everything. Should work?

Pete a 51 looks to be as big as I can get in 1/8 and 130bcd so would be keen on that...

asprilla

okgo wrote:

So I reckon I will get a 1/8 chainring and chain and keep the existing freewheel which is a shimano sf-mx30 which can take 1/8 or the stupid 3/32 that genesis have made everything. Should work?

Pete a 51 looks to be as big as I can get in 1/8 and 130bcd so would be keen on that...

Why not 3/32 at the front, then you can go to 55t?

iPete

Next time I do a shirt run I'll bring it into central, looks like it has some life left.

okgo

Asprilla wrote:

okgo wrote:

So I reckon I will get a 1/8 chainring and chain and keep the existing freewheel which is a shimano sf-mx30 which can take 1/8 or the stupid 3/32 that genesis have made everything. Should work?

Pete a 51 looks to be as big as I can get in 1/8 and 130bcd so would be keen on that...

Why not 3/32 at the front, then you can go to 55t?

I can't find any?

3/32 when searched doesn't turn up a lot of results, or is that just a normal ring? Some links would be good, I don't want a normal ring if its going to get smashed to bits like on the last page...

asprilla

okgo wrote:

Asprilla wrote:

okgo wrote:

So I reckon I will get a 1/8 chainring and chain and keep the existing freewheel which is a shimano sf-mx30 which can take 1/8 or the stupid 3/32 that genesis have made everything. Should work?

Pete a 51 looks to be as big as I can get in 1/8 and 130bcd so would be keen on that...

Why not 3/32 at the front, then you can go to 55t?

I can't find any?

3/32 when searched doesn't turn up a lot of results, or is that just a normal ring? Some links would be good, I don't want a normal ring if its going to get smashed to bits like on the last page...

SJS are great for this kind of thing: http://www.sjscycles.co.uk/130-bcd-5-ar ... pt725_pg1/

53t does appear to be an issue, but there is a 52 there.

okgo

No 55t there?

asprilla

54t or 55t

http://www.sjscycles.co.uk/stronglight- ... prod18409/

First one on the page.

okgo

Where does it say that its 3/32 though?

asprilla

Sorry, it doesn't, but if it's Shimano 10spd compatible then it's 3/32

okgo

Got it

iPete

Perhaps it is placebo(?) but I much prefer a chain that is shorter, easier to get taught and seem to stay taught for longer.

It would mean you'd need a new freewheel but 49x16 would be my choice or 46x15 if you can find one that small. Pick a gear that hits the cruising speed you want @90rpm, works for me, it means you compromise your Embankment pace but you'd be on your race bike if you were that interested...

http://www.bikecalc.com/gear_inches

il_principe

Why not just go 50x16 or 50x17? Plenty of 50T to be found and freewheels are pretty cheap - unless you get a lovely White Indistries one.

okgo

Probably go for 54/18 can't be arsed changing the back bit as well. 90 rpm at 21 mph is fine. Have to think about the times its a headwind, and going up ballet school etc