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• #5652
Are we all just going to ignore that bottle cage?
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• #5653
The whole bike is just stupid.
But it's up there with other bombtracks:
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• #5654
Anyone ever ridden a Rondo Ruut? Seem cool but quite long and low for a gravel bike, and not great spec for the price?
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• #5655
1 Attachment
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• #5656
it looks pretty nice to me. does anyone know if it has mudguard mounts? i can't quite find good pictures. can't tell if there are threaded inserts on the fork near the dropout or what.
if there are then this is the only bike i'm aware of that fits 700 x 45 and 27.5 x 2.1" and has fender mounts! actually now that i think about it the new warbird fits this bill too, but it is fugly.
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• #5657
Yeah it does, and rack mounts. Few reviews mention it.
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• #5658
Maybe the Ozymetric ring upsets the tension too much? It's fugly regardless.
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• #5659
There’s barely any change in tension at all using non round rings
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• #5660
It depends on the ring.
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• #5661
Good bye rims.
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• #5662
How so? Chain wrap is always going to be the same amount of teeth anywhere in the rotation, just over half of the total I assume, no matter the shape of the ring
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• #5663
The point where the chain leaves the chainring will move back or forward.
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• #5664
Does that matter?
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• #5665
Paging @mdcc_tester
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• #5666
I think what we're talking about is "lap angle" no?
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• #5667
Paging tester
Do the maths. Correct axis distance between sprockets in a roller chain drive is invariant for non-circular sprockets only as long as both sprockets are the same shape and size and they are clocked together. For drives where only one sprocket is non circular, the correct axis distance changes in a way which can be disregarded for practical purposes if the following conditions are met:
- The non-circular sprocket has rotational symmetry of order 2n
- The axis distance is large compared with the difference between the roller pitch radii of the two sprockets
- The drive speed is low enough to permit a large negative tolerance on axis distance because centripetal acceleration of the chain is too small to cause problems
These conditions are generally met on practical bicycle drives.
- The non-circular sprocket has rotational symmetry of order 2n
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• #5668
Just look at Froome on his TT bike, you see his rear derailleur continuously moving back and forward.
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• #5669
Can't see that personally but fair enough
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• #5670
you can see it here: https://www.youtube.com/watch?v=wv_dMknWsKc
But you're right, the difference is small. I think a wide narrow rear cog would have been enough for that bombtrack build..
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• #5672
pics plez
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• #5673
Will check it out.
Sonder Camino also has lots of pluses.
I also like the Diverge E5 Tiagra: £200 less and can get a trade-in at Evans. Obvs no hydr brakes.
Gravels are so under-specced this year for the money. It's getting ridiculous. -
• #5674
Sonder bikes just went up in price by about £150 each
That's the impression I was always under as well. Would be a lot of work to re-valve them.