Long low slack geom...
 

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[Closed] Long low slack geometry question!

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Posts: 217
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I'm having this frame built for me, I'm hoping it will feel similar to a longer Nicolai geometron, and a touch longer than a pole evolink.

Can anyone see any issues, with the geometry? Specifically the seatube having no offset?

Cheers

[img] https://ep4.pinkbike.org/p3pb15493458/p3pb15493458 [/img]


 
Posted : 04/01/2018 3:03 pm
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78 degree seat tube - hells bells.
Also - your rear cassette is too small 🙂


 
Posted : 04/01/2018 3:05 pm
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ETT measurement is meaningless with the seat down, but then again when the Seat Angle is that steep it'll hardly change!


 
Posted : 04/01/2018 3:10 pm
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No brakes?!


 
Posted : 04/01/2018 3:11 pm
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No way you can fit a bottle there


 
Posted : 04/01/2018 3:12 pm
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Well, the geometron is 77° , and the evolink is 76° actual, and 78° effective.

Do you still think it's too steep? I can easily change it to 77°.


 
Posted : 04/01/2018 3:12 pm
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If you make it slacker the ETT increases, but from that diagram you don't actually know what the ETT will be when riding it with the saddle up


 
Posted : 04/01/2018 3:13 pm
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Why don't you just get a Geometron?
...or are you going custom for reasons other than geometry?


 
Posted : 04/01/2018 3:18 pm
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Work out the ETT and seat tube angle at pedalling height and compare it to the others. I'd find 78 deg too steep if it stays that all the way up. Geometron must be a lot slacker at pedalling height.


 
Posted : 04/01/2018 3:20 pm
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Ok, it sounds like it's too steep, I'll have it knocked back to 77 degrees.

It's obviously only a rough knockup of the bike. There will be brakes, and I wish I was strong enough to use a cassette that small.

I can't afford a geometron, far too expensive for me at the moment.


 
Posted : 04/01/2018 3:24 pm
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I can't afford a geometron

Oh
Surprised that it is cheaper than an off the peg frame of any sort


 
Posted : 04/01/2018 3:28 pm
 edd
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I can't afford a geometron, far too expensive for me at the moment.
I've just bought a Geometron frame second hand, keep an eye on Pikebike classifieds/ eBay. I can't believe that you'll be able to get one custom made for less than I paid.


 
Posted : 04/01/2018 3:32 pm

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