Wow lots of things to think about, thanks all I'll try to do this in order!
TriBryan:
I know - a large oversight on my part but the helmet is at home (i.e the UK) and I'm in Spain, I couldn't get it in my luggage. I'll update in a few weeks when I get a chance to collect it. I'm planning on shrugging as much as possible during training then when I get to run the helmet relaxing it until the tail is just touching my back. Not ideal but there you go.
GreenPlease:
Thanks I'll look into that, my arms at the minute are touching almost their entire length but I could create a gap. Question though - From the Cervelo tests IIRC BTA is better than not and where I have it should be 0 gain or loss. But if the BTA is an aero bottle is this still the same?
h20fun:
Winging through the fit video I did, I though exactly that on both points. RE seat height - I could raise it a touch esp now I have shorter cranks. However, I've always assumed that the reason not to have a low seat is loss of power and all things being equal the lower the torso the lower the frontal area the and lower the drag. I've not noticed a significant loss in power with this height so I'm not sure of the advantage of raising it? [Caveat - I made a bunch of changes at once at the start of the year so I don't actually know if I would be miles ahead power wise of my former setup (20mm higher on the saddle) if I raised the saddle. I can't compare to a road bike as I always ride this but I'm not far off PB for my FTP (368W now vs 380W) at a much earlier stage in the training cycle (also now hub measured vs crank measured before - and no I didn't correlate!)]
RE: Knee in front of foot - it is very much so and outside of normal limits. I've ridden with the 7.5mm less overhang (172.5mm crank) all year and haven't experienced any issues though? In my mind I wasn't too worried as if I've effectively rotated my road position fwd 45Deg there is likely to be a good overhang at 3 o'clock if I'm dead over the top for the road bike and it's likely to be dead over the top between 4 and 5 o'clock (which it is.) Also coming back more on the saddle closes the hip angle. But I have to admit ignorance on if most of the above is the right thing or not?
nickag:
Specifically a set from: http://www.colbertcycles.com/ although not the ones shown on the site (but the ones on the TT bike in the picture. You can find similar off ebay direct from the manufacturer. Low cost, carbon and good adjust-ability as long as you need some rise. The colour is custom as is the rest of the frame-set however. Yes it is a tririg stem also, although I may change to a normal stem and drill though the bars + stem to route a full outer brake cable through the bars and stem to the brake.
coates_hbk:
Was waiting to finish my morning swim before washing it all now done!
mauricemaher:
Thanks and as above really - is there a good chance it'll be faster than behind the saddle?
JerseyBigfoot:
Thank you very much although more like as an engineer over analysed the hell out of it and missed the crucial part! I don't have the time for aero testing or the want to spend the capital on a tunnel session so winging it a bit!
Iain
Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA
TriBryan:
I know - a large oversight on my part but the helmet is at home (i.e the UK) and I'm in Spain, I couldn't get it in my luggage. I'll update in a few weeks when I get a chance to collect it. I'm planning on shrugging as much as possible during training then when I get to run the helmet relaxing it until the tail is just touching my back. Not ideal but there you go.
GreenPlease:
Thanks I'll look into that, my arms at the minute are touching almost their entire length but I could create a gap. Question though - From the Cervelo tests IIRC BTA is better than not and where I have it should be 0 gain or loss. But if the BTA is an aero bottle is this still the same?
h20fun:
Winging through the fit video I did, I though exactly that on both points. RE seat height - I could raise it a touch esp now I have shorter cranks. However, I've always assumed that the reason not to have a low seat is loss of power and all things being equal the lower the torso the lower the frontal area the and lower the drag. I've not noticed a significant loss in power with this height so I'm not sure of the advantage of raising it? [Caveat - I made a bunch of changes at once at the start of the year so I don't actually know if I would be miles ahead power wise of my former setup (20mm higher on the saddle) if I raised the saddle. I can't compare to a road bike as I always ride this but I'm not far off PB for my FTP (368W now vs 380W) at a much earlier stage in the training cycle (also now hub measured vs crank measured before - and no I didn't correlate!)]
RE: Knee in front of foot - it is very much so and outside of normal limits. I've ridden with the 7.5mm less overhang (172.5mm crank) all year and haven't experienced any issues though? In my mind I wasn't too worried as if I've effectively rotated my road position fwd 45Deg there is likely to be a good overhang at 3 o'clock if I'm dead over the top for the road bike and it's likely to be dead over the top between 4 and 5 o'clock (which it is.) Also coming back more on the saddle closes the hip angle. But I have to admit ignorance on if most of the above is the right thing or not?
nickag:
Specifically a set from: http://www.colbertcycles.com/ although not the ones shown on the site (but the ones on the TT bike in the picture. You can find similar off ebay direct from the manufacturer. Low cost, carbon and good adjust-ability as long as you need some rise. The colour is custom as is the rest of the frame-set however. Yes it is a tririg stem also, although I may change to a normal stem and drill though the bars + stem to route a full outer brake cable through the bars and stem to the brake.
coates_hbk:
Was waiting to finish my morning swim before washing it all now done!
mauricemaher:
Thanks and as above really - is there a good chance it'll be faster than behind the saddle?
JerseyBigfoot:
Thank you very much although more like as an engineer over analysed the hell out of it and missed the crucial part! I don't have the time for aero testing or the want to spend the capital on a tunnel session so winging it a bit!
Iain
Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA
Last edited by:
Iain Gillam: May 9, 15 7:06