Shimano Di2 Alfine
Moderator: robbosmans
- Tinea Pedis
- Posts: 8616
- Joined: Sat Mar 14, 2009 6:08 am
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Sorry, I have no idea what you are referring to.
Can you make your post/thread title a little less ambiguous please.
Can you make your post/thread title a little less ambiguous please.
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- MattSoutherden
- Posts: 1376
- Joined: Fri Jul 10, 2009 7:22 pm
- Location: London
I was very excited last year when they announced this group set for a travel/winter trainer I had in mind. With the 1600+g hub weight, and 135mm rear axel, it would be a hard sell for me now.
Like the nuvinchi hub before, the internal geared hub technology still has some distance to go IMHO.
Like the nuvinchi hub before, the internal geared hub technology still has some distance to go IMHO.
Toys-R-Us
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- Posts: 46
- Joined: Mon Dec 31, 2012 5:27 am
ras11 wrote:I was very excited last year when they announced this group set for a travel/winter trainer I had in mind. With the 1600+g hub weight, and 135mm rear axel, it would be a hard sell for me now.
Like the nuvinchi hub before, the internal geared hub technology still has some distance to go IMHO.
There's some improvement they can made. The motor unit looks bulky and heavy to me.
racermech wrote:I wonder what the gear range is like? 11-23 or more like a 12-27? Could build up to be a pretty fun bike depending on the ratios.
I believe 11-38 or 10-36, and at least the hub weight is around the axle, and no dishing/offset issues ...
maxxevv wrote:Alfine 11 supposedly has a 409% total gear range. From 0.53 - 2.153
The conventions are a little different from normal cassette stack. But if you configure it to be mated to a 22T fixed cog, it works out to be something like a 10-42 cassette.
Interesting ... with that range only a single 46T or 48T crankring is necessary ...
But its really useful if and only if weight and overall efficiency are not priorities. Internal geared hubs can be a little draggy compared to their chain and sprocket cousins. Not sure the latest generation's figures, but the older generations can be as much as 10-12% difference in efficiency.
They are however excellent for commuting use as they generally require very little servicing. Even better if used on a quick and compact packing foldie like a Bike Friday Tikit or a Brompton as they eschew the convenience a compact clean fold with none of the (tangled up, dangling chain )issues of normal derailleur systems for these small wheel folding bikes.
They are however excellent for commuting use as they generally require very little servicing. Even better if used on a quick and compact packing foldie like a Bike Friday Tikit or a Brompton as they eschew the convenience a compact clean fold with none of the (tangled up, dangling chain )issues of normal derailleur systems for these small wheel folding bikes.
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