Wheels collected & weighed

Shimano WH-6700 Ultegra tubeless wheels:
 - front wheel = 683.1g (excluding tubeless valve & skewer)
 - front skewer = 58.7g
 - rear wheel = 950.7g (excluding tubeless valve & skewer)
 - rear skewer = 63.0g
 - £162.63
 - http://www.ebay.co.uk/itm/271061608605
 - http://cycle.shimano-eu.com/publish/content/global_cycle/en/nl/index/components/road/ultegra_6700/product.-code-WH-6700.-type-.wh_road.html

Gearing

Click here for 46t ring + 11-36 cassette + 700-23 tyre ratios @ Mike Sherman's Gear Calculator

Drivetrain

I've saved the best (!) till last. Here's the strategy for the final, albeit most fundamental, section of the puzzle.

Bottom bracket bearings:
 - Shimano MTB (used; XTR?)
 - included with crankset purchase
 - 103.5g

Crankset:
 - XTR M960 175mm (used; triple, for conversion to single)
 - <500g (estimated, after modification)
 - £126.00 (inc.£6.00 delivery)
 - http://www.ebay.co.uk/itm/130768279756

Chainring:
 - Shimano DXR CR80, 46t
 - 139.1g
 - £46.53
 - http://www.chainreactioncycles.com/Models.aspx?ModelID=35272

Chain:
 - Shimano XTR CN-M980 10-speed
 - SRAM PC1091R 10-speed, with Powerlock link

 - 260g (claimed, 116 links)
 - 251.5g (as supplied - 114 links)
 - ~£30 (€35.90)
 - £37.15 (including delivery charge)
 - http://www.bike24.com/1.php?content=8;product=17327
 - http://www.bike24.com/1.php?content=8;product=7391
 - http://www.bike-components.de/products/info/p25061_PC-1091R-10-fach-Kette-.html

Cassette:
 - Shimano Deore XT CS-M771-10, 11-13-15-17-19-21-24-28-32-36
 - Shimano XTR M980 10, 11-13-15-17-19-21-24-28-32-36
 - 350g (claimed)
 - 271.6g
 ~£44 (€52.90)
 - £143.01
 - http://www.bike24.com/1.php?content=8;product=15784
 - http://www.ebay.co.uk/itm/251154658936

Cassette spacer:
 - Shimano CS-HG 1mm cassette spacer
 - 1.8g
 - £0.99
 - http://www.wiggle.co.uk/shimano-cs-hg-1mm-sprocket-spacer/

Derailleur:
 - Shimano XTR RD-M980-GS Shadow medium length 10-speed
 - 174.3g
 - £108.00
 - £107.53
 - http://www.ebay.co.uk/itm/251154295020
 - http://www.ebay.co.uk/itm/251154656620

Shifter:
 - Shimano XTR M980 10 speed trigger shifter, RH rear bar mount
 -  119.5g (including inner shifter cable)
 - £54.99
 - http://www.chainreactioncycles.com/Models.aspx?ModelID=82514

Pedals:
 - Shimano XTR PD-M980
 - 306.8g/pair
 - already got these
 - http://cycle.shimano-eu.com/publish/content/global_cycle/en/nl/index/footwear/Pedals_MTB___BMX/product.-code-PD-M980.-type-..html

I'll finalise things like chainring bolts and outer shifter cable later.

Seatpost bought, delivered, & weighed

Another eBay purchase.

Bontrager Race XXX Lite 27.2mm carbon fibre seatpost:
 - 400mm overall length, 330mm post length, 20mm setback
 - 173.5g (as supplied)
 - £53.49 (including £3.50 delivery)
 - http://www.ebay.co.uk/itm/110958347510
 - http://bontrager.com/model/00286

Computer & lights

I've already got a couple of Cateye V2c/V3 computers; the V3 tracks heartrate, in addition to the speed and cadence monitored by the V2c. The speed/cadence sensor, magnets, and handlebar mount brackets, are exactly the same for both.

I've also got a spare Ixon IQ headlight. These interfere with many wireless computers, including my previous Cateye, but not with the 2.4GHz Cateye V2c/V3.

I'm torn between two Cateye rear lights. The compact TL-LD170 is an old and trusted favourite - simple, inexpensive, effective, and reliable. The bigger TL-AU100BS incorporates a large reflector and looks like it could be just the thing for British winters, I'd be interested to see one in the flesh and give it a try. I just might end up ordering one of each.

Cateye V2c (CC-TR200DW) / V3 (CC-TR300TW) cycle computers:
 - 71.5g (excluding magnets, zip ties, and V3 heartrate chest strap)
 - http://www.cateye.com/en/products/detail/CC-TR200DW/
 - http://www.cateye.com/en/products/detail/CC-TR300TW/

Busch + Müller IXON IQ LED front light
 - 215.5g (including handlebar mounting bracket & 4 x Eneloop AA batteries)
 - http://www.bumm.de/produkte/akku-scheinwerfer/ixon-iq.html

Cateye TL-LD170 rear light (AAAx2):
 - ?g
 - £7.99 (CRC) / ~£5.50 (bike24.com - excluding mounting bracket?)
 - http://www.chainreactioncycles.com/Models.aspx?ModelID=64497
 - http://www.bike24.com/1.php?content=8;product=3407

Cateye TL-AU100BS rear light + reflector (AAx2):
 - ?g
 - £17.99 (CRC) / ~£11.50 (bike24.com - similar model)
 - http://www.chainreactioncycles.com/Models.aspx?ModelID=64503
 - http://www.bike24.com/1.php?content=8;product=1476

 ...updated 01/11/2012 - Cateye magnet weights:
 - wheel spoke magnet = 3.0g
 - crank/cadence magnet = 2.0g

Headset, chainring, shifter, handlebar, stem, & a bottle ordered

chainreactioncycles.com just had a £10-off weekend promotion, which ended at noon today. With the help of a couple of other established CRC account holders, I've ordered six more components and bagged £30 off.

For the purposes of keeping track of what I've spent, I've split the total discount between the six items, in proportion to their cost. Total price would otherwise have been £194.94; total discount was £30.00, which is 15.4%.

Spent today:
 - chainring (Shimano DXR CR80, black 4-bolt 46t) £54.99 -15.4% = £46.53
 - headset (M:Part In-Line Low Profile, black 1.1/8") £21.99 -15.4% £ = £18.61
 - shifter (Shimano XTR M980 10 speed trigger, RH rear, bar mount) £64.99 -15.4% = £54.99
 - handlebar (Controltech SUP MTB, 25.4 x 560mm) £29.99 -15.4% = £25.37
 - stem (FSA XC-150 LX, 25.4 x 110mm) £14.99 -15.4% = £12.68
 - bottle (CamelBak Podium, clear 710ml) £7.99 -15.4% = £6.76

Spent so far:
 - frame (including £20.00 delivery) = £332.88
 - crankset (including £6.00 delivery) = £126.00
 - fork (including £10.00 delivery) = £63.50
 - wheelset (presuming I collect) = £162.63
 - brake calipers (including £5.00 delivery) = £18.83
 - chainring = £46.53
 - headset = £18.61
 - shifter = £54.99
 - handlebar = £25.37
 - stem = £12.68
 - bottle = £6.76
Total = £868.78

Seating

Although this frame doubtless deserves something lighter and sleeker, I'll be using my existing trusty Selle SMP Plus saddle, at least to begin with. It's a hefty 375g or thereabouts - I'll weigh it properly when the time comes to transfer it.

A 23.3g Litespeed 31.8mm seatpost clamp came with the frame.

And I'm currently prowling eBay for a 27.2mm carbon fibre seatpost.

Possible seatpost:
 - Bontrager Race XXX Lite, 20mm setback
 - 150g (claimed)
 - http://bontrager.com/model/00286