Hill climb bike – Trek Madone 6.9

hill-climb-bike

My Trek Hill Climb Bike used in National hill climb championship 2013

bought in 2010

FrameOCLV2 SSL Carbon, E2, BB90, internal cable routing
ForkBontrager Race XXX Lite, full carbon
SaddleTune 85 grams
Seat PostBontrager Ride Tuned Carbon
HandlebarsBontrager Race XXX Lite VR,
StemBontrager Race XXX Lite Carbon, (non standard size

Groupset – Shimano Dura Ace. – 39*53 – cassette 23-12

Front Wheel – AX Lightweight rim front wheel – Tune Mig 45 20 hole.  It weighs 365 grams

Rear Wheel – Zipp 202 (604 grams)

TubularsVittoria Chrono tubular (170 grams)

Pedals – Speed play pedals

Total bike weight – about 5.9 kg (weighed on electronic bathroom scales)

dura-ace

Project One

I bought as Trek Project One through local Oxford bike shop Beeline in 2010. Trek Project One was really good because I was able to customise the bike, but also get the bike through the local bike shop. In the past few years, Beeline road bike shop have been helpful in giving advice on mechanical issues and help out on a few things. It’s also nice to pop into shop and chat to people interested in road bikes.

It’s been a very good road bike for past three years. My only regret is not taking a bit more care to avoid a few small scratches on frame…

trek-madonne-front-wheel

front wheel

Customisations

The only customisations I made to the Trek Madone is

  • Saddle – very lightweight Tune saddle about 75grams
  • Rear Wheels – Zipp 202
  • Front AX lighteness rims – Tune hubs

Last year (2012) I bought an expensive AX lightness stem and Schmolke Handlebars. It saved about 90- 100gram. But, I didn’t really like the standard (smaller) size so I decided to sell on ebay at start of the year. It felt a bad purchase. It cost a lot for little weight saving. This is the first year where I haven’t spent a lot of money on weight saving carbon fibre, but actually made some money from selling stuff.

Best way to save weight

For hill climbs, the best way to save weight is on the wheels. When I put the racing wheels on, you can really feel the difference in acceleration up the climbs.

For many years, I just used relatively heavy Continental Competition tubulars. My philosophy was it was better not to puncture. But, you are adding an extra 120 grams compared to Chrono. Towards the end of the season I put the Chrono tubulars on, and just hope I don’t puncture.

Times saved from weight loss.

As a rough rule of thumb –  with 100 meters of ascent, saving 1Kg would give you an extra 2 seconds. I put figures for the Stang south side in to analytical cycling

Basically if you cut 1kg  of weight from your bike then on the 3.7km at 6.8% gradient, there is a predicted time saving of 5 seconds.  Roughly 200 grams equals 1 second. It might be more because the average gradient is mixed up with downhill. There is quite a bit of acceleration, it’s not a constant gradient.

 

This Much Less Weight 1 kg
Over This Distance 3700 meters
On Hill of Slope 0.068 Decimal
Faster by 5.08 s
Ahead by 36.38 m
Frontal Area 0.5 m^2
Coefficient Wind Drag 0.5 Dimensionless
Air Density 1.226 kg/m^3
Weight Rider & Bike 68 kg
Rolling Coefficient 0.004 Dimensionless
Power 400 watts

cycling

4 Responses to Hill climb bike – Trek Madone 6.9

  1. J R October 28, 2013 at 8:33 pm #

    You won by 2 seconds which is about 0.4% faster than the guy behind you. Now 0.4% of your weight is around 250g, if your bike weighed just that much more you would have lost. Almost makes all that gram counting seem reasonable.

    Especially when you consider the University student’s hill climb was won by only 0.2 seconds the day before!

    • tejvan October 28, 2013 at 9:02 pm #

      Yes. the motivation to buy the wheels and tubulars came from finishing 1 second behind the medals in 2010.

  2. Ilkleypeter October 29, 2013 at 9:13 am #

    Oh dear – after spending the summer travelling, a bout of shingles and a raft of other excuses I find myself 3kg heavier.

    Which half of your bike would you be happiest to ride without?

  3. Jono November 20, 2013 at 11:54 pm #

    And you won as I just saw in cycling weekly. Congratulations though I now consider you a non human 🙂

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