Contemplating a ultra lightweight Titanium bike

[Synthesis]

They do make this tho:

http://www.xacd.com.cn/product.asp?rpag ... &cls=6

 

[Panza]

Have you checked if you can get a new standard Titanium frame with downtube shifter bosses ?
I don't think you can, and then it will have to be custom.
The other problem: On the new frames the downtube is usually huge which makes the DT shifter positions weird and they stick out a lot. It will also force you to use both hands for shifting. Don't know about you but when I run DT shifters I use my right hand for both shifters.
I ended up with barend shifters. Not as nice as DT shifters on a steel bike but you can shift when standing in the drops.

 

[TGR]

A solution to the above could be 600AX Shifters -

http://velobase.com/ViewGroup.aspx?Grou ... ac286da0ee

As mentioned above, you would need a custom boss to fit these.

Richard

 

[oonaff]

Hi sythesis , the stuff about the bars etc did not come through , i got loads of chinese writing and pretty girls
try loading through flickr or drop box.
when you said a retro type build , my own views on top tubes and shapes of drops are mere suggestions although im sure retro carbon bars could be within the budget :idea: [not that there was a
budget in the first place ! Its all good good fun . but does anyone know what the lightest bikes
in the pro peleton weigh ?

 

[Nob]

nob, what dose the TI frame ride like. the welds look tidy

I am told by my contact who has sold these frames not much difference from a branded Ti frame when fed back by customers

 

[Nob]

An unbranded Ti frame from my Hong Kong contact who gets these nice frames very cheap

Oohhh how cheap?

I think around 550 quid but you'll need to contact my man direct if you are interested :?:

 

[pigman]

. but does anyone know what the lightest bikes
in the pro peleton weigh ?

more than they could! The UCI have a minimum weight rule, their argument being insufficient material makes things unsafe. I'm not sure what that limit is, but over 6kg I think.

 

[oonaff]

ah yes i see the bars now ,they look ok ! as well as sloping down tubes i have an intense dislike for those all in one carbon bars and stem[whilst i appreciate that they are both stronger and lighter than conventional quill or a head system and a natural progression... boy are they ugly !!
its quite exciting really,we have some one on the forum who is going to spend loads using extremely light weight
components with a stylish retro racer, maybe you will be drilling the brakes,chainset and levers .lol
IT will be like riding air .

 

[Synthesis]

UCI minimum weight is 6.8 kg at the moment. bars will be either Titanium or Carbon. No bar-stem deal for me, no thank you. Chainrings most likely will be CarbonTi: http://www.carbon-ti.com/index.php?p1=p ... DZ36I110CR

 

[Synthesis]

Build list as it would look for the bike:

Frame: Xianan Ti. ISP 55cm 1450g seatpost uncut

Fork: THM Scapula SP 265g

Headset: Chris King No threadset 98g

Stem: ax-lightness Rigid Carbon Stem 110mm 76g

Handlebar: ax-lightness 4100 Compact Road Handle Bar 42cm 140g

Bar Tape: Cinelli Bubble Ribbon Bar Tape 48g

Brake Levers: Sram 900 Single Speed Brake Lever 244g set

Brake Calipers: ax-lightness 3000 Carbon Road Brakes Set 125g set

Brake Cables: Niro-Glide Turbo Plus TPB 359 Braking Cable Set Road 85g uncut

Shifters: Sram 900 TT shifter modded Ca. 80g

Front Derailleur: Sram Red 74g

Rear Derailleur: Sram Red 140g

Derailleur Cables: Nokon Carbon 35 40 links 12g

Cassette: KCNC Road Bike Titanium Cassette 11-23 113g

Chain: KMC X10SL Superlight Gold Chain 228g 114 links

Cranks/Bottom Bracket: ax-lightness Morpheus Carbon Crankset compact 380g Incl. bearings BB30

Chainrings: CarbonTi 36 x 50 110mm BCD 102g

Pedals: Speedplay Nanogram Zero Pedal 130g

Wheels: ax-lightness Ultra Road 24 Wheelset Tubular 835g Incl. QR

Tubes: 2 x Tufo Elite Jet 160 Tubular Tire 320g

Saddle: Berk Carbon 68g

Seatpost: Berk 32g

Bottle Cage: 2 x ax-lightness Nasdorowje Bottle Cage 28g

Weight: 5,07kg uncut

So put together as a bike I would think it would weigh around 4.7kg, and then we start shedding weight by drilling and using a Dremel.