SRAM Spectro S7 (7g) vs. Shimano Nexus (7g)

Povl Falk-Jensen

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Jul 21, 2002, 8:14:52 PM7/21/02

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Hi

Could someone please tell me some of the advantages and disadvantages with
SRAM Spectro S7 (7g) and Shimano Nexus (7g).

Povl

Sheldon Brown

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Jul 21, 2002, 10:38:14 PM7/21/02

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Povl Falk-Jensen queried:

> Could someone please tell me some of the advantages and disadvantages with
> SRAM Spectro S7 (7g) and Shimano Nexus (7g).

SRAM advantages:

.Wider gear range
.Easier wheel change
.Small internal parts can be replaced if needed for service/repair

Shimano advantages:

.Closer gear spacing
.Shift linkage is inboard of chainstay, out of harm's way
.Internal service by replacing modular units, easier than the SRAM
.Choice of twist-grip or RapidFire shifter

I see by your email address that you're in Denmark. If Denmark is as
flat as I have heard, the closer gear spacing of the Shimano is probably
better for your conditions.

The SRAM's wider range would make it preferable for riding in hilly terrain.

Sheldon "Planetary Gears" Brown
+--------------------------------------------------------+
| There is no conclusive evidence of life after death. |
| But there is no evidence of any sort against it. |
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| --Robert A. Heinlein |
+--------------------------------------------------------+
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alex wetmore

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Jul 22, 2002, 12:08:16 PM7/22/02

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Sheldon Brown <capt...@sheldonbrown.com> wrote in
news:3D3B7015...@sheldonbrown.com:

> Povl Falk-Jensen queried:
>
>> Could someone please tell me some of the advantages and disadvantages
>> with SRAM Spectro S7 (7g) and Shimano Nexus (7g).
>
> SRAM advantages:
>
> .Wider gear range
> .Easier wheel change
> .Small internal parts can be replaced if needed for service/repair

More efficient (Frank Berto measured this for Human Power, the journal of the
IHPVA)...sorry I can't find the exact results right now.

> Shimano advantages:
>
> .Closer gear spacing
> .Shift linkage is inboard of chainstay, out of harm's way

harder to remove the shift cable from the hub though (even harder if you have
a chaincase)

> .Internal service by replacing modular units, easier than the SRAM

Easier, but more expensive. You are basically replacing the guts of the
entire hub. On my SRAM hub I had one small part fail and was able to just
replace that (for under $1).

> .Choice of twist-grip or RapidFire shifter

I have both and prefer the SRAM, but I live in hilly Seattle.

alex

Henrik Münster

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Jul 22, 2002, 1:09:23 PM7/22/02

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Sheldon Brown <capt...@sheldonbrown.com> wrote:

> SRAM advantages:
>
> .Wider gear range
> .Easier wheel change
> .Small internal parts can be replaced if needed for service/repair
>
> Shimano advantages:
>
> .Closer gear spacing
> .Shift linkage is inboard of chainstay, out of harm's way
> .Internal service by replacing modular units, easier than the SRAM
> .Choice of twist-grip or RapidFire shifter
>
> I see by your email address that you're in Denmark. If Denmark is as
> flat as I have heard, the closer gear spacing of the Shimano is probably
> better for your conditions.
>
> The SRAM's wider range would make it preferable for riding in hilly terrain.

But what about the friction? It has been said, that the Shimano unit has
more internal friction than the SRAM. My wife has a bike with Shimano 7
speed internal gear-hub, and it feels very heavy.
--
Henrik "In some parts of Denmark, we do actually have some quite nasty
hills" Münster
Esbjerg
Danmark