Wheel upgrades.

[frank9755]

When I came home from Italy this year I just left it in the top tube bag on the bike. Nothing was said.

Remind me never to go on the same plane as you!

The risk is not so much losing the thing at security but that it might cause a fire - which is the reason for the rule.

It's tiny probability but lithium batteries do catch fire very occasionally and the consequences would be catastrophic...

 

[steveindenmark]

Remind me never to go on the same plane as you!

The risk is not so much losing the thing at security but that it might cause a fire - which is the reason for the rule.

It's tiny probability but lithium batteries do catch fire very occasionally and the consequences would be catastrophic...

I will let you know my future flying plans Frank.

 

[Ajax Bay]

how would you get home? You might not be able to take that battery on a plane. IATA rules say your can have up to 10 Ah and you can have up to four of them.

IATA
"For carriage by passengers, power banks are considered spare batteries and must be individually
protected from short-circuit and carried in carry-on baggage only."
(Wh rating = Ah capacity x rated voltage)

 

[andrew_s]

I'm asking myself how much comfort do you give away for a little extra speed?

Comfort is speed.

Your body can absorb significant amounts of energy* when being rattled about by rough roads or by an over-stiff bike, and your legs have to supply it.
With quality tyres, you don't lose much in terms of pure rolling resistance (i.e. hysteresis in flexing the sidewalls) at lower pressures, and can easily gain more than you lose.

For an important one-off ride like TCR, I'd look at Compass Stampede Pass (32 mm) or Compass Bon Jon (35 mm), depending on clearance, and run them at a pressure aimed for best comfort without risking snakebites. (from Velo Vitality, in the UK).

Hard tyres tend to feel faster even if they aren't - compare times for similar rides instead of going by feel, and average over enough rides yo cancel out weather changes etc.


*deliberate selection of a very poor surface has shown an extra 290 watts to maintain 26 km/h, compared with a smooth road

 

[Ajax Bay]

an extra 290 watts

 

[frank9755]

An extra 290 watts on the TCR is something that only happens for 3 seconds in response to a large, angry dog!