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PostPosted: Sun May 29, 2011 11:15 am 
Gold Trader / rb Rider / Special
Gold Trader / rb Rider / Special
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Joined: Mon Aug 31, 2009 12:26 am
Posts: 16165
Location: Rurally close.
i use 36:16 and i spin out quite often


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PostPosted: Sun May 29, 2011 12:38 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8202
Location: New Forest, UK
IDB1 wrote:
What numbers (of teeth) you using?


32/16. Middleburn Uno with a BMX freewheel on a modified Hope Ti screw-on hub. In an ideal world I'd run 39/19 as it's better to have odd-toothed rings - otherwise the teeth always do inner or outer chain links. I jump the chain a single tooth whenever I clean it to even the wear up.

I find that a bigger ratio makes a climbing a bit of a struggle, although if I was on the road all the time I'd want a bigger chainring.


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PostPosted: Sun May 29, 2011 1:55 pm 
Gold Trader
Gold Trader
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Joined: Mon Mar 22, 2010 10:17 am
Posts: 7889
Location: Mid Suffolk
Cool, thanks..

Been wondering about teeth count on the same/similar ratio (more for when I have my wheels built than now since I'll be using a freewheel rather than spacer kit)..


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PostPosted: Sun May 29, 2011 2:45 pm 
Old School Grand Master
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Joined: Fri May 01, 2009 7:11 pm
Posts: 8479
Location: Fircombe.
I lkie a 17t cog on the back. It's an uneven number, to even out the chain wear, and by using 32 or 36 t rings you can add/lose 6% from the 2:1 ratio 34 ring, which is just enough to fettle your ratio.
If you're looking for the "magic ratio" though, you need this;
http://eehouse.org/fixin/formfmu.php :D


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PostPosted: Sun May 29, 2011 3:20 pm 
Gold Trader
Gold Trader
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Joined: Mon Mar 22, 2010 10:17 am
Posts: 7889
Location: Mid Suffolk
Is magic ratio relevant on a SS specific frame?

Done so little riding since coming back to MTB and nothing of note on a SS (my frame should be back soon so I can redress that balance) that I'm still learning theories :?


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PostPosted: Sun May 29, 2011 3:57 pm 
Old School Grand Master
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Joined: Fri May 01, 2009 7:11 pm
Posts: 8479
Location: Fircombe.
No, only on frames with "normal" dropouts.


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PostPosted: Sun May 29, 2011 6:17 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider
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Joined: Sun May 25, 2008 11:03 am
Posts: 18207
Location: Sunny Glasgow
I gave it a go and loved it ,only problem is it exacerbated a knee problem i think wouldn't have otherwise shown up for a few years,so i went back to gears on a 1x9 set up.
Fun and liberating for a while but not too good for knee joints in the long run :?


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PostPosted: Sun May 29, 2011 7:40 pm 
Old School Grand Master
Old School Grand Master
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Joined: Wed Aug 08, 2007 10:35 am
Posts: 12266
Location: Penarth
With you....I just can't be arsed with gears


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PostPosted: Sun May 29, 2011 7:51 pm 
East Midlands AEC
East Midlands AEC
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Joined: Thu Oct 05, 2006 7:45 pm
Posts: 15067
Location: Derby, UK
I can't be arsed with gears either. Or suspension. Or general maintenance. Too b****y lazy that's my problem :lol:

Ride the bike, have fun, shove it in boot until next ride. Repeat.

I use 34:16 on a 29er (which raises the gear inches a bit compared to the same ratio on a 26er). Suits me on most stuff. The only times I've had to push, most of the guys I'm with on geared bikes are pushing too :lol:


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PostPosted: Sun May 29, 2011 8:05 pm 
Gold Trader
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Joined: Mon Mar 22, 2010 10:17 am
Posts: 7889
Location: Mid Suffolk
I'm keeping a 1 x ? about but from the brief time I've spent with a single gear, it'll do for me..


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