Do not use a synthetic line on a winch designed for steel cable?

Jp90Talon

New member
While I was at Superwinch picking up my winch I asked what they thought may have caused it to shatter the way it did. He said it wasn't my case since my model came with the synthetic rope and had their thicker gray drum designed for use with synthetic rope. However I was told that they often see similar style failures on winches that were originally built and shipped with steel cable because the drums that are used on winches with synthetic lines need to be thicker due to when in use the line compresses as it coils and puts a considerable amount of outward pressure on the sides of the drum itself. They went on to say that they have seen similar failures of winch frames on winches that were originally purchased with steel cables but owners went on to upgrade to a synthetic line. As the synthetic line coils/compresses while winching it pushes out on the sides of the drum itself. And since the non synthetic drums are not as thick they can put pressure on the sides of the frame causing them to crack and fail. I didn't go into tremendous detail with them since I was just thrilled to be getting a fully functional winch back. I kinda wish I had asked if that is just on older style winches such as mine or if all makes/models share this issue, but I just figured that it was something I should mention on here for people to be aware of when shopping for winches and should be taken into consideration before making a purchase.
 
I'm not sure about Superwinch, but I don't think there's any difference between the 9.5cti with Steel cable and a 9.5cti with Synth cable from Warn...

 
Good info!  I've been running synthetic on my Super Winch EP9.0 for years.  It was purchased 10 years ago way before synthetic winch rope was available.  I was told when you switch from steel to synthetic - to smooth out any burs left on the drum from the steel cable and switch to a new fair-lead.  The only thing I thought was with synthetic rope - you have to worry about drum temperature.  Most of the Super Winch models we use have an external brake so temperature shouldn't be an issue (except their newer low cost unit that spec'ed out that synthetic should NOT be used)

That being said - most other brands have an internal spool/drum brake which theoretically could heat up the spool/drum enough to compromise the rating of synthetic rope.  In the real world - when are we spooling out under load long enough to heat things up to compromise the line?
 
Found this while searching for info...


"It has nothing to do with Superwinch, but with where the brake is. In most winches, the brake is in the drum. Dyneema synthetic rope (the good stuff Viking sells) begins to distort at just 150 degrees. Powering your line out heats your drum and thus the rope.

We put a heat gun on a Smitty and after powering out it's rope the temp was over 220.

The other problem that was mentioned is how much this rope wants to dive down between layers. In loose layers, that makes unspooling it tough. In pulls, it can put so much load on the drum as to push the flanges apart. This will either bend the flange (winch stops) or split the drum tube like taffy (drum flys out of winch). This happened to Overland Journal when they put synthetic on a Warn.

Can you keep your winch cool? Sure. Can you take extra care in dressing your rope and not side-pulling? Sometimes.

It's all risks and rewards. Me? I'd rather have a winch that was built with synthetic from the get go, with a brake outside the drum and beefed up drums.

But I am biased.

JG
SuperwinchExperts.com "

http://www.wranglerforum.com/f282/replace-steel-winch-cable-with-synthetic-242820.html
 
Never even thought about this as an issue. Did any of the mags during testing report this. You would think the rope manufacturers would issue a warning. Thanks for the heads up.  FjR68
 
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