Cycling UK Forum

SpannerGeek wrote:with the single chainring the chain line is brilliant.

Can't figure that one out, surely a single ring on the front is going to mean the gears at the ends of the cassette are further from the chainline.

PH wrote:

SpannerGeek wrote:with the single chainring the chain line is brilliant.

Can't figure that one out, surely a single ring on the front is going to mean the gears at the ends of the cassette are further from the chainline.

Well because the single ring is bang in the middle (that's how I set it up) of the cassette it doesn't have the extremes to go to (+/-20mm) it would over the range of a three chain rings on the front. The chain runs in complete silence!

SpannerGeek wrote:

PH wrote:

SpannerGeek wrote:with the single chainring the chain line is brilliant.

Can't figure that one out, surely a single ring on the front is going to mean the gears at the ends of the cassette are further from the chainline.

Well because the single ring is bang in the middle (that's how I set it up) of the cassette it doesn't have the extremes to go to (+/-20mm) it would over the range of a three chain rings on the front. The chain runs in complete silence!

Nope, still don't get it. My middle chainring is bang in the middle of the cassette, so it has the same chainline as your single. But at the ends of the cassette I can improve the chainline by using the rings either side. The only time I can see you having a better chainline is compared to someone misusing their gears, small/small or big/big. Unless I'm missing something?
Back on topic - If I were going 1X I'd look more at getting the gears I used most of the time rather than the overall range. In my case loosing 3 off the bottom an 1 off the top would still cover 99%+ of my riding. I'd rather loose that 1% then compromise the gaps between the gears I do use. On a touring bike I wouldn't mind, I could get away with a lot less gears and adjust my riding. As it's a carbon I'm guessing it's a road bike and particularly in a group I'd want the right gears most of the time rather than all the gears all the time.

Bmblbzzz wrote:Here you go.

Mmm, good stuff. Have a caviar? They're cheese and onion flavour. Ooh, is that tin titanium?

We were in the Queen's Head yesterday and had a few Tribs.

Thinking about that photo and how the Trib looks cloudy and awful, I got Mrs Mick F to take a photo of ours.
It shows you how it SHOULD look.

Nice one! Hadn't occurred to me it looked cloudy, actually, and it is off their website so should show it in a positive light. I think it just looks a bit 'frosted' or rather cold with a bit of condensation. But I'm not sure why it should look like that either.

Mick F wrote:Can you buy 11-50 cassettes?

Technically, the large sprocket can be larger* than 50T, by using a chainring adapter, such as:

http://www.ebay.co.uk/itm/40t-42t-sprocket-cassette-chainring-adaptor-expander-MTB-7-8-9-speed-/112170459942

* a Rennen ring, e.g.

Does anybody know of an off-the-peg road bike with rim, probably V brakes not discs that comes with 1 x 11 gears and will take widish, >32 mm tyres and will take mudguards?

My thinking is that I don't need closely spaced gears because I don't ride in groups and I generally change 2, 3 or more gears at a time with my current 3 x 10 set-up and I am not keen on disc brakes because they tend to squeal, in my experience at least.

PH wrote:Nope, still don't get it. My middle chainring is bang in the middle of the cassette, so it has the same chainline as your single. But at the ends of the cassette I can improve the chainline by using the rings either side. The only time I can see you having a better chainline is compared to someone misusing their gears, small/small or big/big. Unless I'm missing something?

You are correct. Though I find with my 1x9 bike that the vast majority of the time I am on the middle 7 gears at the back so chainline isn't an issue. For a touring bike though where hours can be spent grinding uphill in bottom gear a triple is still the best solution both for gear range and chainline.

irc wrote:

PH wrote:Nope, still don't get it. My middle chainring is bang in the middle of the cassette, so it has the same chainline as your single. But at the ends of the cassette I can improve the chainline by using the rings either side. The only time I can see you having a better chainline is compared to someone misusing their gears, small/small or big/big. Unless I'm missing something?

You are correct. Though I find with my 1x9 bike that the vast majority of the time I am on the middle 7 gears at the back so chainline isn't an issue. For a touring bike though where hours can be spent grinding uphill in bottom gear a triple is still the best solution both for gear range and chainline.

Range is greater and overall chainwrap is more so chain wear is less

My hack commuting bike is 1x8 and I find the chainline to not be an issue and it changes gear really crisply despite the rear mech being worn to hell! Granted I use top and bottom for about 30 seconds up and down the same hill (way in and way home).

I really like the concept of 1x11 or wide range super compact (like the Spa chainset) as I tend to get lost with a triple!