London Fixed-gear and Single-speed

No idea, I didn't realise they'd changed geo. I'll have a look into it. The frame is right in front of me so measuring is easy enough.

Cheers.

This is apparently the '07 geo, but mine is 550mm seat tube by 550mm horizontal top tube with a 175mm head tube.

Ooh, comparing the 2011 geo to the 2007 geo. A fair few changes.

How strange. My head tube is 185mm just like the 2011 model. I wonder if they measured from a different place before. It wouldn't make sense but they could have measured from the headset cups.

Is your a medium then? Mine is a large.

I was told it was a large I think, but its had a respray, so impossible to tell as it doesn't fit any listed measurements!

Mine seems like the bastard child of a 2007 mixed with a 2010!

Not that I'm complaining, it fits me better that way.

It looks like a large, medium has a fair slope to the top tube.

Please explain, I'll change my habits if you have science. On rear wheels, it is traditional to have the pulling spokes inbound for crossed/interleaved builds (as pictured), because the increase in tension under power then tends to pull the interleaved crossing inboard, and away from the dérailleur. This is obviously irrelevant on track wheels.

Yeah, none of it looks like the listed geo though!

It's definitely 550mm c-t seat tube, 550mm c-c top tube and 175mm head tube (about 160mm if measured to inside of cups).

Looks almost traditional geo!

On dished rear wheels, yup, I know you're supposed to do it the other way. But I definitely got this from somewhere reputable, probably Jobst Brandt. I'll check the book.

Okay, So I have potentially a stupid question...

The fixed gear and lock-ring on the rear hub, which way round should they be installed?

I originally chucked the sprocket on such that it would tighten when pedalling forward, and the lock-ring on the opposite threading, (which I understand is the correct method?)

It seems the gap between the sprocket and the spokes isn't deep enough, and I'm getting a clickety-clack when the pedals turn. If I flip the sprocket the other way (to give more room), won't this be threaded incorrectly?

no, sounds like you have the sprocket on inside outey.

As is always the case with these things though, don't force anything.

that side is spokeside.

There are no stupid questions

I stand corrected

I did warn you!

Balls.

(Also, thanks all for clarifying my stupidity!)

Yeah it is dished, only one side is threaded, that makes me feel much better

Well, dished enough to allow multiple sprockets, the point being when the trailing spokes tension under pedalling force and the leading spokes relax, the crossing point is pulled inwards (away from the derailleur) rather than outwards. It's a very slight effect though. Your wheel is fine, don't worry.

So, I went and had a look through the Brandt book, but it doesn't seem to back up what I thought. It does indeed recommend that you build rear wheels with the trailing spokes on the inside, irrespective of dish.

However, the Musson book is the other way round. His method ends up with the leading spokes on the inside. And then I remembered where I got the 'stronger' thing from - before I started building wheels, I had a set built by Arup and he specifically told me that he built them so that the hub logos were readable from behind when installed in the 'correct' - stronger - orientation, which was leading spokes inside.

So I've always built front wheels and track wheels that way round.

I wonder if it might have something to do with the Brandt diagrams showing the build process from the non-drive side, when one might assume they were from the drive side.

tl;dr

#csb

Maybe make sure your chain line and chain tension is okay to?

The only hubs I've had which have a distinct 'right way round' are C-Record, which have counterbores for the spoke heads at alternate holes on the outside of the flange. That does force you to build a particular way round, and because the handedness of most rims opposes it you end up with either outbound pulling spokes or a trapped valve. Apart from the rear drive side argument enumerated above, and maybe the brake side of disc brake wheels for the same reason, there is no reason to favour one method over the other. Incidentally, dish has nothing to do with it, except that it's dish that puts the rear dérailleur cage so close to the drive side spokes in the first place.

On the wheels I've built for myself recently, I've put whichever spokes would get the greatest load on the inside of the flange, so my disc front wheel is laced the other way round to my v-brake front.

Indeed. Interesting that that misconception had perpetuated somehow though.

I thought it might have been the disc wheel forces that convinced Musson to build that way out of habit (as he seems mostly to build MTB wheels) but in his book he reckons when he was learning, he looked at the wheels being used in the TdF and most of them were built with the pulling spokes on the outside so that's what he did. Maybe they were mostly C-Record...

Aren't those counter bores to relieve stress on the bend of the spoke? -so the spoke head actually goes on the other side of the flange?
Sounds like the spoke holes on Mavic hubs
http://www.sterba-bike.cz/media/prod...avic-276-5.jpg

Few bits need adding (such as a new saddle). Fun bike and a really nice ride. This will eventually turn into my Time Trail bike for 2012.

Win.

Has the rear triangle been repaired?

Yeah the frame was built for a 650c rear and I toyed with selling it - but got it sorted at Mercian

Ah right so they moved the brake bridge up, thought the clearances looked toight!

So basically you got an even higher BB!

just wanted to say, thats one short and tall bike.
ed you have a pm too.

my dolan seta is still a current project, waiting for new parts to bring the weight under 6.6kg. i know it would be easy to go under 6, but there are parts which i won't change.

Like the saddle you mean?

Fair enough, very personal choice those are.

No, they are not bell-mouth holes as you would make them to support the spoke bend, they are actual counterbores sized and shaped to accommodate the spoke head. Some pictures on the internet seem to show the large flange C-Record road hubs with counterbores on all the holes, but mine are definitely on alternate holes which, given the 1/2 spoke offset from one side to another, makes them 'handed'

Tyres look good. Michelin Dynamics? Shame you changed the original crank, why was that, for lower gearing? Other than the modern saddle and the extra's it's looking pretty good. Glad you changed the hoods and tape for black, looks much better than the white I had on it.

Haha are they Adidas Gazelles?

Changed saddle to Ti SLR and got some nice blue Fizik Microtex. That is all.

anyone use this front DR clamp?



£5.99 at evans, otherwise any suggestions for value for money alternatives?

That one is fine.
Shimano, SRAM and Campag all make their own if you want to match to groupset.

It's in long distance/practical mode at the moment, well long distance for me anyway

Tyres are Panaracer pasela (awesome tyres), i did change the crankset so i could get a lower gearing, glad i did as well, still got the original ones in my shed, the Rolls saddle will be going back on tomorrow.

I wish, i really wanted some, but i ended up having to settle for ones called Elridge, similar to Samba's

All pantos done and for a grand total of £6
My eyes hurt though

is it compatible with all sorts of mechs ? (ultegra triple to be precise)

Yes, road FD hangers are universal, haven't changed in decades.

Seat tube angle is extra steep now too, how does this ride?

my brooklyn:

liking it

Sweet!

What are those bars, some fair old rise on them...

octane one from crc, 3". A bit too high for the front end. Going something like 2" when I find some nice ones.

when i sell my plastic planet x nanolight with chorus 11 groupset later this year..
i'm getting something like this from Daniel Merenyi, time to go back to steel methinks




apparently the text on the seat stay is all about opportunities and drinking

I saw and loved that frame at bespoked, it just looked fabulous.

the photo doesn't do it justice.. always fancied a colnago..
but the Bel Canto Pista looks very special
suspect he'll do limited paint jobs

negaatio-thats my favourite gangsta ever! Don't ever do the skinny tyres and drops on it, that always looks utter shite.