David Whitmon view: flat | tree
Subject: Re: [touring] Chain stress from cross chaining
Date: 4/6/2011 6:08:16 PM
List: Touring
I've looked at the chain on my triplet, it takes four chains to make
it go, and my velomobile, a 13' long chain. There is no difference
between the chains. None what so ever. The chain on the velomobile is
the one that came on it and the chains on my triplet are those that I
bought in the bike shop I use to work in. The chains that originally
came with my triplet were the KMC, Z chains. I snapped the front
timing chain after just 300 miles. I bought 4 SACHS/Sedis chains for
the triplet the next day,

It take 3 chains to make the 2 timing chains and a 4th chain in the
rear that runs through the derailleurs. I used quick links for these
chains.

I snapped 3 Shimano 6/7 speed chains in short oder over 20 years ago.
Haven't use a Shimano chain since.

I can find nothing that says that there are specific recumbent chains.

Even Sheldon Brown shows no info in regards to specific recumbent
chains.
Nor does Bentrideronline have anything I can find on recumbent
specific chains

Can you provide a link referring such a thing?

David

On Apr 6, 2011, at 7:43 PM, Mark Boyd wrote:

> I didn't know it either until I needed to shorten the chains on both
> of my recumbents and discovered that pushing out the pins in those
> chains brought back memories of working with chains in the days of
> seven speed cogs. It took very little force to push them out. Modern,
> high quality, chains that I use, made by both Shimano and SRAM, use
> pins that have mushroomed heads to withstand lots of side force.
> Recumbent chains don't need to be able to withstand those forces.
>
> Mark
>
>
>
> On Wed, Apr 6, 2011 at 7:27 PM, David Whitmon
> <whitmon@vineyard.net> wrote:
>> I can't say that the folks who made recumbents knew that. This is
>> the first
>> I've ever heard this thought. I do know that both my velomobile
>> and triplet
>> use the same Sedis 9 speed chains.
>>
>> David
>>
>> On Apr 6, 2011, at 7:03 PM, Mark Boyd wrote:
>>
>>> Steve:
>>>
>>> And i submit that the folks who made the recumbents knew they could
>>> use weaker chains ;-}. Since they need roughly 2.5 regular
>>> chains for
>>> each recumbent, it makes sense to use chains that cost less and are
>>> less able to stand side stresses than Th. chains on a regular bike.
>>>
>>> Mark
>>>
>>>
>>>>>

--
You received this message because you are subscribed to the Google Groups
"bicycletouring" group.
To post to this group, send email to bicycletouring@googlegroups.com.
To unsubscribe from this group, send email to
bicycletouring+unsubscribe@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/bicycletouring?hl=enn
Skip Navigation Links.