BIKE THREAD
5 lurkers |
200 watchers
Jan 2016
7:29am, 22 Jan 2016
3,699 posts
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cathrobinson
Yes, that's true... 
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Jan 2016
10:38am, 22 Jan 2016
16,923 posts
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GlennR
I am seriously tempted by the new Planet X Pro Carbon. Especially now it's available in pink: planetx.co.uk |
Jan 2016
8:45pm, 22 Jan 2016
3,957 posts
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Winded
Going back - it depends on how good my brakes already are - Ultegra callipers are great but if the bike already stops well I'd give my arse a tiny bit more comfort and go for the seatpost.
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Jan 2016
1:28pm, 23 Jan 2016
16,931 posts
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GlennR
Sorry to be tediously scientific Winded, but I can't see how a little bit of give in the seat post would be significant compared to the give in the saddle itself.
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Jan 2016
1:55pm, 23 Jan 2016
3,958 posts
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Winded
It depends on the post - not all are the same, some have a lot of give. As to whether or not it is significant I guess that depends on both your choice of saddle and of post. (and of course how much post you have sticking out of the frame). The post on my best bike is the version before this one bikeradar.com You'll see the claimed movement in the post is 25mm - that's quite a lot. A low end seatpost is probably about the same whatever it is made of. (it came with my bike, I didn't spend £200 on a post). I don't know it if is the post or the frame but my best bike is MUCH more comfortable than my 2nd best one - and that one is also quite comfy. |
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Jan 2016
2:04pm, 23 Jan 2016
3,959 posts
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Winded
What I would say is that a flexible or stiff frame can be made out of any (within reason) material - the stiffness of a tube is determined by the wall thickness, the material and the diameter - wider tube=stiffer. Sorry to be tediously scientific. The thing about a post is that the diameter is set as the size is standardised so the material is relatively more important while for the frame a good designer can do a lot with materials that are perfectly good but less fashionable this year.
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Jan 2016
2:24pm, 23 Jan 2016
16,934 posts
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GlennR
The 25mm is presumably side to side movement though, not vertical absorption?
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Jan 2016
2:35pm, 23 Jan 2016
3,960 posts
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Winded
My arse is not sensitive enough to measure the difference in bumpiness in all dimensions but just thinking about the vectors I suspect the fore and aft flex in my post is what makes it comfy. I'd let you ride it for a test but I have a bigger frame than you so not much post would stick out if you were on it.
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Jan 2016
4:18pm, 23 Jan 2016
9,515 posts
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richmac
Current brakes are Tiagra so really anything is an upgrade! I like the idea of Ultegra, lighter and better stopping power (I hope) |
Jan 2016
5:31pm, 23 Jan 2016
20,043 posts
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eL Bee!
rich - you'll notice a massive difference between Tiagra and Ultegra!
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