<![CDATA[London Fixed-gear and Single-speed - Mechanics & Fixin']]> http://www.londonfgss.com/ Building a bike through to correcting a problem and re-building after a crash. Everything mechanical in here. en Fri, 20 Nov 2009 22:09:52 GMT vBulletin 60 http://static.londonfgss.com/images/londonfgss/misc/rss.jpg <![CDATA[London Fixed-gear and Single-speed - Mechanics & Fixin']]> http://www.londonfgss.com/ Hints and tips on rebuilding a set of Mazocchi Bomber Z1 suspension forks http://www.londonfgss.com/newpostinthread33486.html Fri, 20 Nov 2009 21:02:10 GMT Well the suspension forks are leaking so was thinking about rebuilding them with new seals and maybe guides. Was wondering if anyone has done this... Well the suspension forks are leaking so was thinking about rebuilding them with new seals and maybe guides.

Was wondering if anyone has done this before and had any hints and tips about how to go about it and parts suppliers. ]]> lynx http://www.londonfgss.com/thread33486.html Can anyone help a brother out? Chaintool needed in clapham http://www.londonfgss.com/newpostinthread33483.html Fri, 20 Nov 2009 18:02:18 GMT I need a chaintool as mine is buggered, in clapham south and unless someone can help then I'm drinking at home tonight. ]]> Sainsburys Ed http://www.londonfgss.com/thread33483.html Headset problems http://www.londonfgss.com/newpostinthread33468.html Fri, 20 Nov 2009 13:53:10 GMT Hey im trying to build up a new ride using my old bianchi goldrace 600 frame and i cant get a headset to fit it can anyone offer any help? cheers Hey
im trying to build up a new ride using my old bianchi goldrace 600 frame and i cant get a headset to fit it can anyone offer any help?
cheers ]]> solidteak http://www.londonfgss.com/thread33468.html Fork height, trail, and rake info (web page) http://www.londonfgss.com/newpostinthread33456.html Fri, 20 Nov 2009 12:11:43 GMT Someone, on a thread dealing with Pompinos, posted a link to a web page that, using any two of these three variables (trail, rake, or axle to crown... Someone, on a thread dealing with Pompinos, posted a link to a web page that, using any two of these three variables (trail, rake, or axle to crown height) would give you the third. It was a very handy little application for nerding out. Anyone have it?

Actually... It may have used head tube angle as well... Hrm.

Also, in the same thread, someone said you gain or lose 0.7 degrees per CM in fork height. How does rake affect this? Anyone know? ]]> horatio http://www.londonfgss.com/thread33456.html AVA stem http://www.londonfgss.com/newpostinthread33453.html Fri, 20 Nov 2009 11:24:49 GMT Working with a 70's Pug conversion which has of course the AVA stem and bars. Have heard that these have a reputation of failing. The stem appears to be in pretty could condition. Does anyone have any experience of these stems? Obviously not a good thing if it does fail but how common is this problem...is the risk worth it compared to either finding a used 22mm stem or buying new 22.2 and sanding it down? ]]> Pepper77 http://www.londonfgss.com/thread33453.html Looking to borrow a lockring and chain-whip http://www.londonfgss.com/newpostinthread33439.html Fri, 20 Nov 2009 08:23:06 GMT Does anyone in brixton have a chain whip and lockring tool? And even better will invest a bit of their time to help me use them to fix my wheel. I... Does anyone in brixton have a chain whip and lockring tool? And even better will invest a bit of their time to help me use them to fix my wheel. I would buy but I don't know if I will need them again, I am not yet sure if the changeover from ss will be a lasting one. I am in brixton/work at UCL near Euston, but will travel!

Ta, ]]> jimineep http://www.londonfgss.com/thread33439.html Can I reattach a braze on without wrecking the paint job? http://www.londonfgss.com/newpostinthread33429.html Thu, 19 Nov 2009 22:21:07 GMT Good evening. I managed to pop the downtube shifter braze on off my rick powell tt frame and wondered if I can reattach it without requiring a... Good evening.

I managed to pop the downtube shifter braze on off my rick powell tt frame and wondered if I can reattach it without requiring a respray?

There are various metal epoxy glues that claim to be as good as brazing but I'm sceptical.

Could I get it re-brazed without damage?

Anyone got any experience of this most disappointing of situations?

Cheers! ]]> moonshinewilly http://www.londonfgss.com/thread33429.html Chain snapped - why so soon? http://www.londonfgss.com/newpostinthread33425.html Thu, 19 Nov 2009 21:39:53 GMT Hi, One of the links on my chain has snapped (just on one side luckily so nothing major). It has done what I would consider to be very light... Hi,

One of the links on my chain has snapped (just on one side luckily so nothing major).

It has done what I would consider to be very light mileage, what could be the cause of this breakage?

My chain line is good, the chain is a TAYA 1/8 model that I got from halfords probably cost around £10.

Any Ideas?

As a side issue, what chains are considered reliable and where is the best place to buy them in the East London/ Bank area?

thanks

skinnygav ]]> skinnygav http://www.londonfgss.com/thread33425.html Has anyone fitted bmx forks on a mountain bike frame http://www.londonfgss.com/newpostinthread33399.html Thu, 19 Nov 2009 14:29:00 GMT Had a silly idea, of fitting bmx forks to a mountain bike frame to create a strange lo pro style bike. What I was thinking has anyone done that?... Had a silly idea, of fitting bmx forks to a mountain bike frame to create a strange lo pro style bike.

What I was thinking has anyone done that?

Was thinking about fitting spacers below the bottom cup/above the fork stem joint to raise the forks so the pedals will have some clearance to actually complete a revolution. Or is this a drug adled stuipidity that should be left alone.

Thanks for the help and advice. ]]> lynx http://www.londonfgss.com/thread33399.html Braze on with clamp FD http://www.londonfgss.com/newpostinthread33380.html Thu, 19 Nov 2009 11:39:00 GMT Because i hadn't seen the frame ive bought recently i forgot to ask if it ws braze on or not. I bought Campy rec 32m clamp on front derailleur in error. Is there any way i can get this to fit the bike? Or have i got to sell it on again?
 ]]> boggy http://www.londonfgss.com/thread33380.html <![CDATA[Check the length of your brake's sunken nut]]> http://www.londonfgss.com/newpostinthread33370.html Thu, 19 Nov 2009 10:40:09 GMT well, 2 weeks ago i got a new headset i had to put 2mm of spacers between fork crown and caliper as my lower headset cup stuck out too much. hmm... well, 2 weeks ago i got a new headset i had to put 2mm of spacers between fork crown and caliper as my lower headset cup stuck out too much. hmm methinks, i should get a longer sunken nut for that. so yesterday, i order one (£4 from http://www.chainreactioncycles.com/M...?ModelID=17557) and stupidly think i'll be ok. go for the commute today. at a busy junction, luckily slow down with legs til almost stopped, grab a handful of front brake and bam! the end of the bolt strips, i get very shocked as i see the caliper falling out of the fork. and end up not unclipping and fall to the floor, luckily all cars are stopped or moving very slowly so don't get run over. phew! followed by an agonising walk to nearest bike shop (cycle surgery in west hampstead) wondering if they will have/even know what a sunken nut is. very nice mechanic looks thru his boxes of stuff and finds me one - for free.

so, word to the wise, make sure there is a good length of sunken nut holding on your brake caliper or you may suffer injury or death. ]]> vélo libre http://www.londonfgss.com/thread33370.html Drivetrain Stiffness http://www.londonfgss.com/newpostinthread33365.html Thu, 19 Nov 2009 10:19:43 GMT I gave my chain a clean and re-grease over the weekend, and since then I've found the drivetrain has been feeling really stiff - as if I'd changed up to a bigger gear ratio. The really odd thing is that it isn't constant, I can ride into work and it feels really bad and then ride home and it feels okay, and today it changed over the course of the ride in.

The chain was scrubbed in warm water and fairy liquid, then wiped down, oiled and given a light coat of GT85. I've tried putting a bit more oil on and loosening the bb cup very slightly (it's an old racer with the original cup and cone/cottered setup) but that hasn't made much difference.

Any ideas? My legs are starting to complain about the extra work... ]]> tim hawkins http://www.londonfgss.com/thread33365.html Anyone recommend a BB and Chain set for Peugeot (english thread) http://www.londonfgss.com/newpostinthread33314.html Wed, 18 Nov 2009 13:59:41 GMT Right I've just converted my peugeot to Fixed gear and am thinking of changing the BB and chain set too.

I currently don't have the tools or the knowledge to know what BB to order and Chain set to fit it. Can anyone recommend a BB to start with and a Chain set which will fit my current chain line. At the moment I am still using the small ring on the Chain set if that helps at all.

Sorry if this post is a big fat epic fail please point me in the right direction!! ]]> spenceey http://www.londonfgss.com/thread33314.html Weld aluminium http://www.londonfgss.com/newpostinthread33313.html Wed, 18 Nov 2009 13:41:19 GMT i everyone i like to know if someone knows about a place i can weld aluminium , if is in london better i got a fuji frame and doing some crazy shit... i everyone i like to know if someone knows about a place i can weld aluminium , if is in london better i got a fuji frame and doing some crazy shit one of my dropouts was a bit broken, please if anyone knows webpage,place,phone number etc please reply to the post kind regards. ]]> canichegotico http://www.londonfgss.com/thread33313.html Downtube Dent http://www.londonfgss.com/newpostinthread33303.html Wed, 18 Nov 2009 11:35:16 GMT Hey, Bought a frame with the intention of building up a bike for my g/f as a xmas present. Stupidly, as I was in a rush to pick it up and get back... Hey,
Bought a frame with the intention of building up a bike for my g/f as a xmas present. Stupidly, as I was in a rush to pick it up and get back home, didn't check it out properly before buying it. (I'm an idiot, I know, I know, I'm allready kicking myself for it) I knew the general condition was a bit knackered but failed to spot a fairly large dent in the downtube. I've sanded back the rust to check how bad it was. I also put a straight edge against it to check if the whole tube was bent, seems to be out by a few mm. The whole things gaspipe, not butted tubing or anything like that.

So, is it a junker? I've had a google and some people say the downtube isn't as important as the others because it's under tension not compression, but obviously I don't want to risk it if it could be dangerous, especially as it's not for me. I can save the headset, forks and bb if I scrap it, unless anyone would be happy to use it for something?

Cheers!
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