New bike geometry
 

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[Closed] New bike geometry

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At the moment I ride what you would probably call a hardcore hardtail, with 650 wheels, a 140mm fork, a 67° static / 69° sagged head angle. It's great for messing about on and good to ride down steep stuff. It sometimes feels a bit slow and upright riding uphill and on the level.

I'm thinking about building up something a bit lighter and quicker and probably a 29er, for longer faster rides, but I would also still want it to ride well on steep and technical stuff. I've seen a frame I quite like but it's got a 70.5° static head angle and is designed for a 100mm fork. I'm quite happy with a shorter fork (last bike was 80mm fork and very old school geometry, although I don't know what the angles were), but I don't know if the 70.5° head angle will feel too steep compared to the bike I'm used to now? Perhaps it doesn't matter with the bigger wheels? My wife has a 29er with a 69° head angle - this bike is too small for me to ride seated comfortably, but overlooking that the angles feel good when standing up and arsing about on it.


 
Posted : 08/06/2016 8:15 pm
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Head angle on the old one was 71.


 
Posted : 09/06/2016 5:44 am
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my 29er HT has a 65 static head angle. its a great bike (Ragley Big Wig) other option would be a Stanton Sherpa which has a 67 static head angle i think with 120mm forks


 
Posted : 09/06/2016 7:01 am
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Yeah I like the Sherpa too. They had their frames at Fort William last weekend and they're very nice.


 
Posted : 09/06/2016 7:25 am
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Pick up a Solaris mk1 and run it with a 100mm fork?


 
Posted : 09/06/2016 7:27 am
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Could do yes


 
Posted : 09/06/2016 9:44 am
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I've no idea what you are actually asking.

140 + 67 is too slow and upright

100 + 70.5 might be too steep

80 + 71 you're quite happy with

120 + 67 is very nice

too small + 69 is un-comfy but fun

If you want a medium travel 29er there have been loads of threads recently


 
Posted : 09/06/2016 10:10 am
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🙂 a bit vague isn't it!

I suppose what I'm wondering is where the happy medium between fast/racy/steeper and the more confidence inspiring/slacker geometry is, if there is one.

The reference to my old bike is perhaps a red herring. While I was happy enough on that I wasn't riding stuff as steep or difficult as I do now, and I don't want to end up feeling uncomfortable on the hard stuff having got used to the slacker bike. Of course the answer to that is be a better rider, but let's be realistic... 🙂


 
Posted : 09/06/2016 11:11 am
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The happy medium depends totally on you.

There is a whole load more to the feel of a bike than its head angle.


 
Posted : 09/06/2016 11:14 am
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Of course, but it's still a factor, hence the musing.


 
Posted : 09/06/2016 11:24 am
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Posted : 09/06/2016 11:26 am

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