175kph at the top of the Eiffel Tower means nothing. Ground windspeed is almost always much lower.
Wouldn't bother ditching the helmet for wind resistance. It really won't do much. That which you lose on profile will partly be made up for in turbulence unless you have a shiny head.
4 hours is OK for 100k although cramps would indicate that you're overdoing it to keep that up for 200k. Sod the tablets, eat real food, you'll enjoy it much more.
175kph at the top of the Eiffel Tower means nothing. Ground windspeed is almost always much lower.
Wouldn't bother ditching the helmet for wind resistance. It really won't do much. That which you lose on profile will partly be made up for in turbulence unless you have a shiny head.
4 hours is OK for 100k although cramps would indicate that you're overdoing it to keep that up for 200k. Sod the tablets, eat real food, you'll enjoy it much more.