Splicing by Tuttle

[tuttle]

re: timberjack

You are spot on there, there are so many variables when the pressure is, the eyes are the least of your worries.

A snagged carabiner is one of the biggest failings.

 

[tuttle]

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4000 e2e splices??? im calling bullshit on that figure......

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Approximately 3.6529680365296803653 prussiks per day? Six splices on small cord? That does seem a bit much.

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?? I can make 20>30 per day, I have different methods to those out there, I would sell the idea for $30,000

 

[tuttle]

A morning's work....

 

[tuttle]

re: Tree Access

Thank you for a positive and learned approach.

Indeed the kn rating for these applications is low.

I have emailed the university a slightly different setup for testing to show on this thread....still waiting for a reply.

 

[MooseHead]

Out of curiosity why would someone pay $30,000 for an untested method when they could spend $40 to buy one and dissect it?

 

[tuttle]

Because I invented my process, its not about the rope but the tools I made and invented, its top secret and I'm not giving it away.

 

[itterada]

[ QUOTE ]
[ QUOTE ]
[ QUOTE ]
4000 e2e splices??? im calling bullshit on that figure......

[/ QUOTE ]

Approximately 3.6529680365296803653 prussiks per day? Six splices on small cord? That does seem a bit much.

[/ QUOTE ]

?? I can make 20>30 per day, I have different methods to those out there, I would sell the idea for $30,000

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20 to 30 a day for a dedicated day of splicing doesn't seem that unusual.

 

[MooseHead]

So you don't use the DB instructions and your splice is unique bc of the tools you use? Can you elaborate a bit more without giving away your secrets?

 

[Tree Access]

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It's my thinking that an i2i prussic will only ever be exposed to somewhere in the neighborhood of 1500 lbs as most friction hitches slip at forces greater then this figure.

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Do you know whether any data has been published on this?

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This is quite interesting for example, Paolo Bavarescos report about Friction Hitches:
http://www.forestry.gov.uk/pdf/FCRR-JD-0402.pdf/$FILE/FCRR-JD-0402.pdf

 

[tuttle]

I have read that 4yrs ago, interesting stuff.

re: moosehead

I not giving the game away, because I am going to sell up in a few years.

 

[jmcscrap]

The international man of splicing mystery.....

Back to the original question, what are the numbers?

 

[tuttle]

Today I have the proof.

The pictures below show an 8mm marlow viper eye2eye at 700mm, the rig was tensioned at 7kn, then a force of 200kn applied at 5mm per second.

The rope gave at 21.2kn.

There was no movement in the spliced eyes.

 

[Leroy]

Cool tuttle, nice job

 

[tuttle]

Youtube video of test and results....

http://youtu.be/alFTfnlTRt4

 

[tuttle]

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Cool tuttle, nice job

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Thank you

 

[Tree Access]

Did you do a straight pull test on the e2e as well?

 

[tuttle]

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Did you do a straight pull test on the e2e as well?

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I was waiting for that reply, The machine was limited to the length of around 600mm, so a straight pull could not be achieved.

That said, I have never seen a test done like this, so with regards to use in work, it shows exactly how it would perform.

How often is a prusik used straight in a work scenario?

 

[Tree Access]

Yeah, I was waiting for that reply too!
I am asking because of the 15 diameter fid lenght thing.
Really cool would be to splice the same stuff with different fid definitions and then compare them in breaking strength.
Btw, whats the mbs of the cordage you use?

I bet you where waiting for that reply as well!

 

[tuttle]

My numbers are based on mm, no fids are mentioned, but at this point I have to add that tapers are important, And that has taken a long time to gain the correct amount in my view.

The cordage is rated at 12kn as per Marlows Website, but that might be a mistake. I am in the process of contacting them because there where differing kn ratings over the last few years.

 

[jmcscrap]

Looks good! Thanks.