207 reputation
18
bio website griffinevo.wordpress.com
location Uppsala, Sweden
age
visits member for 1 year, 8 months
seen yesterday

PhD candidate in Evolutionary Genetics of Aging


Jul
16
awarded  Commentator
Jul
16
comment Sudden tyre deflation with no puncture
Beginning to suspect there may be a tiny leak which just bulged wide open for a brief moment when I hit the cobble, the tyre did seem to lose some pressure overnight, but only a little and maybe it's just because I was being over zealous of pre ride checks/suspicious of it!
Jul
16
comment Sudden tyre deflation with no puncture
Thanks for the comments folks some clarifications: Presta Valve Not completely flat, dropped from ~90 to ~20 psi. Hasn't leaked significantly since (two 50 km rides plus left for 24 hours). Not previously patched. Tyres were checked for pressure before the ride.
Jul
16
comment Sudden tyre deflation with no puncture
@Blam This is why I'm asking, can a well closed valve let a big portion of air out? - I'm no expert on the intricacies of how a presta valve works
Jul
16
comment Sudden tyre deflation with no puncture
@AliGibbs The valve was securely closed so I don't think that could be the case
Jul
16
awarded  Yearling
Jul
16
asked Sudden tyre deflation with no puncture
Jul
2
awarded  Curious
Apr
14
asked Figures on accidents involving cyclists where motorists are using cell/mobile phones
Mar
8
comment Does group riding negate the aero benefit of deep rim wheels?
Thanks, that's a really good explanation of the reasons behind aero benefit of deep rims. I've almost settled on a pair of fulcrum red wind h50's but want to read some more reviews! Oh, and no doping too of course.
Mar
8
accepted Does group riding negate the aero benefit of deep rim wheels?
Mar
7
awarded  Caucus
Mar
7
comment Does group riding negate the aero benefit of deep rim wheels?
@arne cool, I will bear that in mind for any cycling holidays to the alps/mountains and switch back to my existing low profiles if they are lighter than my new ones (hoping for a trip to Canaries this winter/autumn!)
Mar
7
comment Does group riding negate the aero benefit of deep rim wheels?
@arne Group riding is where I care about speed though - I don't want to let the group down... "but want to maximize my speed for big group (~20-30 riders) riding events" and already I work on riding position by getting recorded occasionally and have the bars set pretty low.
Mar
7
asked Does group riding negate the aero benefit of deep rim wheels?
Mar
2
comment What is needed to change a set of wheels? + advice RE the cassette size
an explanation of the downvote would be nice - then I can adjust the question!
Feb
25
awarded  Editor
Feb
25
revised What is needed to change a set of wheels? + advice RE the cassette size
added further detail from another answer and shrank the pictures a little
Feb
25
accepted What is needed to change a set of wheels? + advice RE the cassette size
Feb
25
suggested suggested edit on What is needed to change a set of wheels? + advice RE the cassette size