The Murphy Builders Site

Its probably better to use cable that is not as strong as the fittings -
instead of failing catastrophically it simply stretches and continues to
provide some structural integrity. In my water loop, which ended up as a
slide to the right, the bottom left to top right wire stretched a fair
bit but kept it together rather than allowing a collapse which would
have been catastrophic.

Garry

Ken wrote:

I'm curious whether MAM shipped 1x19 wires to anyone for the cross
bracing cables on the floats. It is about 40% stronger in 5/32" diameter
than 7x19 and it happens to be of similar strength to all the tangs and
AN5 bolts that it fastens to by my estimates.

I received 7x19 control cable for this with my kit and I have no reason
whatsoever to think it won't work just fine other than it seems odd that
it may not be as strong as the fittings and is a more expensive
material. Perhaps because it is easier to work with?

Ken




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Ken,
1x19 is a lot stiffer and would be a bear to work with. Just my 2cents
worth.

Bob,
I have a V brace in my Rebel I'll see if I can find some pictures and post.

Si
----- Original Message -----
From: "Ken" <klehman@albedo.net>
To: <rebel-builders@dcsol.com>
Sent: Monday, October 12, 2009 8:56 AM
Subject: [rebel-builders] Float rigging wire

I'm curious whether MAM shipped 1x19 wires to anyone for the cross
bracing cables on the floats. It is about 40% stronger in 5/32" diameter
than 7x19 and it happens to be of similar strength to all the tangs and
AN5 bolts that it fastens to by my estimates.

I received 7x19 control cable for this with my kit and I have no reason
whatsoever to think it won't work just fine other than it seems odd that
it may not be as strong as the fittings and is a more expensive
material. Perhaps because it is easier to work with?

Ken




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Yes stainless is interesting stuff. As I recall it will start stretching
(permanently deforming) at about 40% of its ultimate strength and it
rapidly gets stronger as it stretches and work hardens. The ultimate
strength or breaking point of the stronger 1x19 is similar to the
fittings so I was curious. You have given me confidence that the 7x19 is
adequate and Si has confirmed that it is much easier to work with.

thanks again guys
Ken

Garry Wright wrote:

Its probably better to use cable that is not as strong as the fittings -
instead of failing catastrophically it simply stretches and continues to
provide some structural integrity. In my water loop, which ended up as a
slide to the right, the bottom left to top right wire stretched a fair
bit but kept it together rather than allowing a collapse which would
have been catastrophic.

Garry

Ken wrote:

I'm curious whether MAM shipped 1x19 wires to anyone for the cross
bracing cables on the floats. It is about 40% stronger in 5/32" diameter
than 7x19 and it happens to be of similar strength to all the tangs and
AN5 bolts that it fastens to by my estimates.

I received 7x19 control cable for this with my kit and I have no reason
whatsoever to think it won't work just fine other than it seems odd that
it may not be as strong as the fittings and is a more expensive
material. Perhaps because it is easier to work with?

Ken

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Hi Ken I would expect the minimum bend radius of 1x19 to be bigger than a
normal tang as well.

At 07:37 PM 12/10/2009 -0400, you wrote:

Yes stainless is interesting stuff. As I recall it will start stretching
(permanently deforming) at about 40% of its ultimate strength and it
rapidly gets stronger as it stretches and work hardens. The ultimate
strength or breaking point of the stronger 1x19 is similar to the
fittings so I was curious. You have given me confidence that the 7x19 is
adequate and Si has confirmed that it is much easier to work with.

thanks again guys
Ken

Garry Wright wrote:

Its probably better to use cable that is not as strong as the fittings -
instead of failing catastrophically it simply stretches and continues to
provide some structural integrity. In my water loop, which ended up as a
slide to the right, the bottom left to top right wire stretched a fair
bit but kept it together rather than allowing a collapse which would
have been catastrophic.

Garry

Ken wrote:

I'm curious whether MAM shipped 1x19 wires to anyone for the cross
bracing cables on the floats. It is about 40% stronger in 5/32" diameter
than 7x19 and it happens to be of similar strength to all the tangs and
AN5 bolts that it fastens to by my estimates.

I received 7x19 control cable for this with my kit and I have no reason
whatsoever to think it won't work just fine other than it seems odd that
it may not be as strong as the fittings and is a more expensive
material. Perhaps because it is easier to work with?

Ken

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Drew



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