jag88

Back story:

Ok so last year I built a super badass "sunday" bike... its an off white mission bicycles frame 4130 cro-mo, lots of leather and shiny billet aluminum, an 8 speed internal hub... super sweet bike and fairly light too. I really loved building this bike, but I only ride in on the weekends or when I can ride it from my house and then return to my house with no stops in between. Reason being that this bike is simply too nice to lock up somewhere, it will get stolen within minutes, I might as well be locking up a giant silver necklace because its that blinging.

So I have continue to ride my busted up old Trek Earl singlespeed as my daily rider, I like the simplicity of a single speed, its a great bike to use for commuting... luckily I dont have to commute very far because 4 out of 5 chain ring bolts are now zip ties and other reasons. Basically this bike is done, Im gonna give the frame to someone to rebuild it if they want to. But for me I am going to build a NEW one!!!

My goal for this new project is to make as light of a bike as is physically possible with off the shelf parts... because thats the challenge I want to take on, it is completely impractical but I don't really care.

Main Question:

So I am looking for some ultra-light parts for my bike and I am having trouble finding some things.

Things I need advice on.

- Frame, does a carbon fiber fixed gear/freewheel specific frame exist? I see plenty of road frames but nothing specifically for single speeds. If I cant source a carbon frame I will get a columbus steel frame from wabi cycles so I am not too worried about that but carbon would be tight.

-Hubs, I am looking for a set of ultralight titanium hubs for front and rear (freewheel not fixed). I have found some pretty light front hubs, but I have yet to find any light titanium single speed rear hubs... it would be cool to have a matching set but it isn't necessary. Please help me find some!! Ideal weights would be front 50-70g rear 120-200g, but its really whatever lightest ones I can find.

-Chain rings and cogs, I am looking for either all titanium of the titanium ring bonded to carbon chain rings... I have found some made for single speed mountain bike but nothing for road (the MTB ones max out at 34 tooth... I need like a 47-48 tooth). Any thoughts?

Scrodzilla

jag88

Why? because you can't wait to see someone bash me for taking on a silly and expensive project? I have no illusions as to the ridiculousness of this...but again I don't care. This is a project for me to enjoy, and the challenge I have set for myself is to build the lightest single speed bike I can from off the shelf parts. You can cut me down if you want, but that wont stop me or slow me down...

prooftheory

You could probably shave some weight by cutting your ears off.

jag88

wow real mature, I can see where this is going... shouldn't have even bothered.

Bandera

Here's a sweet CF Fixie frameset, and it even has bar/stem and crankset for 1 stop shopping:

Look L96, carbon track frameset, no shipping, no tax

-Bandera

jag88

I am assuming posting an $11k frame is some sort of joke? You guys are mean as hell, I am done with this place... effing snobs.

hairnet

You asked for carbon. You got carbon.

Bandera

Not a joke at all, a response to your requirements:

"My goal for this new project is to make as light of a bike as is physically possible with off the shelf parts... because thats the challenge I want to take on, it is completely impractical but I don't really care."

The L96 is about as light as possible and is available off the shelf.

As a Project Management Professional (PMP) your Project Scope requires a Budget and Timeline as well as more detailed Requirements.
What was your Budget?

BTW: This is the only free advise you are ever likely to get from a PMP....

-Bandera

jag88

Well after mentioning in my original post that I am leaning towards a columbus steel frame with a carbon fork that costs $700 you should be able to put two and two together... you know damn well you posted that to be mean, and also being that I am PMI certified I have no need of your "free advice" when it comes to planning the project... what I need help with is sourcing parts. I am shooting for simplicity and about a $2000-2500 price tag, I also have no qualms about buying used parts off ebay to keep the costs down. I am not building a track bike, I am trying to build a lightweight bike for the road... very lightweight, lightweight enough to hold it over my head with one arm, so ~16Lbs ish or less. I am a girl and I am not strong by any means, I currently have to get someone to help me hang my bike on the vertical racks at work every time I get there... because it weighs friggin 35Lbs, I don't want to do that anymore.

Nagrom_

Sup

Bandera

OT: If this is an example of your Project Management skills, violating and omitting the most basic principles, you are not on a career track for PMP.

Refresher: Project Management Professional Certification (PMP)

Now back to your Fantastic Fanciful Fixie thread.

-Bandera

UltraManDan

I paid $350 for my bike (complete) and it weighs 23lbs and I can hold it over my head with one arm... 35lbs for any SSFG is pretty damn heavy

Jared.

That's a gross statement. Being a girl and being strong are not mutually exclusive.

OP doesn't give a specific weight, nor a specific budget in the initial post. Even scarier is the fact that she wants to build a whole bike when she can't be bothered to replace chainring bolts. Then gets mad at the responses. Got it.

jag88

You know we could have had a decent discussion and I could have cleared up the specifics of what I was looking for as the thread developed... but the fact that the first few posts were intentionally mean and condescending that put me on the defensive. Im not writing a ****ing professional project plan for your review and approval, I was posting a forum question and you guys started by making fun of me instead of being constructive. You were being intentionally mean to me, thats wrong.

Leukybear 

Only fixie scrubs like OP base "hyper-light" singlespeed builds on a track frameset.... what you should use is a road frame with a BB30 shell so you can adjust tension with an eccentric adapter to adjust tension with.

GEEEEEEeee I wish I was rich like OP is!

Bandera

A final bit of free advice:

In planning any Project be it a Mars exploration mission, a bicycle build or purchasing a home Subject Matter Experts (SME) may be called upon for their expert input.
That's what you are doing in an informal way on this forum.

If you cannot clearly and concisely present your Scope statement (with a reasonably detailed and precise set of Requirements), Budget and Timeline no SME can reasonably give the advice your project needs for success. In the case of this forum a failure in this regard results in your getting a load of Guff from SME, except myself. Take it as mentoring not meanness.

-Bandera Out

Huffandstuff

Buy the Emonda and cut the derailleur cables, cheap and easy SS under 15 lbs. Problem solved.

JamesCraps

seau grateau

American Classic hubs will give you a light set. Their rear track hub is 180gr and the Micro 58 front is 58gr.

Scrodzilla

Soil_Sampler

RUNDKURS ? Reach your limits with our carbon track circuit wheels

Scrodzilla

You should've majored in rocket science instead.

You're also overthinking this (and making a bit of an an ass of yourself in the process). My wife's Vigorelli weighs 16ish lbs without even being weight-conscious when she was choosing parts.

To drive my point a little further, My 55cm All-City Thunderdome weighs less than 18 lbs and again, I didn't give a rat's ass about building a "hyper-light" bike. If I were worried about what the scale says, I could've easily knocked two pounds off the total weight by simply using a different wheel build, saddle and tires.

AristoNYC

Get a quality aluminum frame with carbon fork, carbon seat post. the rest is up to your budget. Wheels, wabi makes a light inexpensive wheelset. You can always get some cheap 20mm carbon clinchers which would weigh around 1500g.

You also can get a 20lb bike that is safe and affordable to ride for a lot less than a weight weenie build would be. Most of the girls I roll with lift weights so they have no problem with heavy bikes, maybe a trip to the gym would be more beneficial than a lightweight bike.

here is a <18lb QUALITY bike - Wabi Cycles Lightning SE fixed gear bike specs

Chinese carbon track frames [no idea on how the quality is, would be a risk]

Birthday

I am curious how a crabon-ridden commutarck bike would be any less a theft target than a shiny townie.

2014: the year we forgot fixies were even based on racing bicycles and pioneered the 16lb bike.