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Старый 27.11.2009, 13:58   #7
murad
 
Регистрация: 03.05.2005
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счастливый ты человек...
Ты лучше объясни что это и как ощущается.

Вот что сами Санта Крузовцы пишут по поводу Nomad + HS

Цитата:
The very short answer is- some people notice a difference, and some don¹t.
It depends on your riding style to a certain extent, and the terrain you are
riding.

The long answer is- yes, it does pedal differently, but only if your
hammerschmidt is in the higher gear. The lower gear will pedal the same as
any granny ring. Basically, chainring size will affect any suspension bike,
as the location that your chain is pulling from changes as the chainring
diameter changes. The larger rings will have a tendency to pull the wheel
up- compressing the suspension, while a smaller ring will have less of that
compressing force, or possibly an extending force (this is a vast
generalization; it really, really depends on the bike). In general we
design bikes to pedal perfectly in the middle ring, with slight compromises
in the small and large rings (The Nomad is designed to be optimal with
around a 32-34t chainring). Pedaling hard (standing) in the small ring on a
Nomad will have a slight tendency to extend the suspension, which is
something some people feel, and some don¹t. So, as the hammerschmidt is
always using a small ring, you are always a little compromised.
Here is where it gets a little more complicated. Not only does the
chainring size affect the suspension, but the torque that you are putting
into the chain affects it as well. You are able to put more torque on the
chain in a lower gear, making that extending force on the suspension
greater. The high gear on the hammerschmidt puts the same force on the
chain as a standard middle ring, so it will not extend the suspension as
much as using the lower hammerschmidt gear or traditional small chainring
will. So, you are pulling from a different spot compared to a standard
middle ring, but the pulling torque is the same. So the end result is
pedaling characteristics somewhere between that of a traditional granny gear
and a middle ring.
Basically, it isn¹t ideal; but it probably isn¹t too bad either. The other
thing to consider is the tolerances required by the hammerschmidt. There
are a lot of very tight specs for flatness and perpendicularity of the ISCG
tabs that we may not meet at this time. SRAM has a facer for the ISCG tabs
to get them perfectly flat, but I have a feeling that tool is hard to come
by.

Thanks for choosing Santa Cruz, and let me know if you have any other
questions.

Scott Turner - Santa Cruz Bicycles
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