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• #1477
Excuse my stupidity - had a Specialized BG bike fit recently and this is my current fit:
Saddle height (BB centre to centre of saddle): 770mm
Saddle fore/aft (saddle nose in relation to BB centre): 85mm aft
Reach (saddle nose to bar centre): 560mm
Effective reach (saddle nose to hood centre): 700mm
Drop (saddle top to bar centre): 75mm (although you have dropped two spacers since) [this takes it to 85mm I guess as the spacer is 10mm]So how do I go about translating this to a common geo chart - say the one for the Genesis Zero:
http://www.genesisbikes.co.uk/bikes/road/race/zero-team
Or the SuperSix:
http://www.epic-cycles.co.uk/images/cannondale-Evo-geo.jpg
Just trying to make sure I understand what stack and reach etc to look for when shopping around - I know there is fine tuning to be done with spacers and stems, so I guess it's just a case of getting the closest to ideal and then dialling it in...?
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• #1478
Can you visit a bike shop and do your measurements on the models you listed in the flesh?
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• #1479
By bar centre, do you mean where it clamp onto the stem?
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• #1480
Yep, guess that's what it means (I use an 11cm stem)
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• #1481
Hmm yeah, stupidly I hadn't thought of printing them off and taking them along. Hopefully the average sales person would be able to make sense of the numbers!
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• #1482
Average salesperson won't have a clue.
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• #1483
Hopefully the average sales person would be able to make sense of the numbers!
They won't.
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• #1484
Haha yeeeeah thought that might be the case. Mosquito stock the Zero so I could talk to them about it - not that I've been in there so I can't speak for how switched on they are. i think they are also stocked at Moore's Cycles in Twickenham - again, never been there either.
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• #1485
Mosquito should understand, Moore's less likely.
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• #1487
Moore's less likely.
Depend how my interview go.
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• #1488
is it because you can get more power sat further forward but the uci sets the position of the saddle?
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• #1489
Bingo.
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• #1490
You don't need a salesperson, you need the actual bike (in whatever random size) and a measuring band + pencil&paper [and rattleCAD installed on your pc].
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• #1491
Paula Radcliffe
ffs
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• #1493
You could.
You could also go to KFC and have a very enlightening discussion with a graduate, who works there, about the workings of the UK economy and the and the impact that it has on the EU.
You could also go to Sigma and talk to an absolute fucktard about spensions and gasbrakes.
Or you could go on a internet forum and ask questions. -
• #1494
FYI, there is a 56cm Genesis zero .3 in Moores.
No tape measure though..... -
• #1495
No tape measure? This is exactly the kind of reason I doubt Moores could advise re fitting.
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• #1496
sarcasm.....
I can see 2 from where I currently stand.
Not sure if i know how to use it though..... -
• #1497
My bad, Felix did a funny. Though possibly he is not actually at work.
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• #1498
On the note of flexibility, I see an osteopath every so often (lifting heavy tends to pull things out of place...) and after my last visit sitting in the drops is comfy all the time instead of PM only and not when just awake and cycling to work.
TL:DR get yourself checked over every so often. Yes I do stretch 3-4 times a week and foam roll.
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• #1499
Okay, I've sat down and calculate it.
Saddle setback is useful, it allow me to find the BB to stem length, which is 475mm (85 - 560) up to bar center.
let stick with 475mm, as the stem is angled rather than horizontal.
For the stack (up to bar center);
770mm saddle height and the drop, 75mm, that give me 695mm.
stack with bar center - 695mm
reach with bar center - 475mmUsing this, I can't do it reverse but can put a bicycle geometry on it and it also show the stack with spacer and stem as well, (bottom on the purple section).
The Genesis in XL have (with 120mm stem as listed on their site);
Stack (with spacer and stem) - 694mm*
Reach (with spacer and stem) - 507mm**with 45mm of spacer headset and stem stack.
Bear in mind that all this calculation could easily be wrong as I'm a dreadful mathematician, but hopefully those who shine a little with math can easily correct it.
I found it incredibly uncomfortable, which is why I switched to an Adamo which relieves the pressure on the sensitive areas. Split nose saddle use is way more prevalent in amateur TT'ing than in the pro ranks, dunno why more pros don't use them tbh. Sponsorship I suppose.