Building the Aussie GRCS

TrevMcRev · 1st June 2007, 06:34 AM

Bought a winch today so time to get to designing/farbrication of a GRCS type system. THe fabricator can engineer the device using FEA, Finite Element Analysis. This is what is used to "test & measure" the effect of loads placed on an object in numerous ways as used to test safety in the design of rollcages. Im confident this will be as well, or better made than a GRCS.

I'd love feedback from anyone with experience with this device as to how they think it could be refined.

Ekka · 1st June 2007, 01:29 PM

Here's some pics I left large.

Loaded with tips.

JayD · 1st June 2007, 02:50 PM

Hi Trev,
Use alloy grade steel it will be lighter and stronger,and the points Ekka made are good aswell,maybe a small directional fairlead above the winch to minimise friction,it's a bit like reinventing the wheel but with the knowledge of actually using it first.Don't disregard the product being sold as the engineering has already been done for you just re inforce on that.

JayD · 9th June 2007, 01:38 AM

Hey Trev,
How's it going,have you started it yet?..If so...Where's the picy's.

TrevMcRev · 25th June 2007, 03:17 AM

Quote:

Originally Posted by JayD

Hey Trev,
How's it going,have you started it yet?..If so...Where's the picy's.

Not started on this but it is one of the next projects in line. Just had to put new sides in the truck canopy due to rust from the mulch and dismantle the stumphumper to repair a crack in the frame. When i get it back together i'll start on the TrevMcRev Tree Rigging System. We can call it the TTRS, and when you say it fast it sounds like ...........tittyrrse

So any other tips from users of similar friction/lifting devices that will help refine the design are welcome.

JayD · 26th June 2007, 05:36 PM

There's alway's something taking our time,maintenance sucks but you have to do it...me myself, I think re inventing the wheel will be hard, That's why I suggested re inforcing on whats already out there..like a work in progress..things you notice and say that would work better if I did it like this...etc.don't be afraid to change(modify things)as you go just keep a record of what you have done:eg build procedure,if you weld, welding procedure,size and tensile strenght of bolts,mounting rachet and strap max,min working load...bring the powers that be in on it they will tell you what they expect from you in the way of certification..and posibly stop you from making a costly mistake.It will be good to see the finnished product..but don't take to long to do it or I will beat you to it.Good luck with it Trev.

Mangoes · 10th October 2007, 08:31 PM

Thought I might bump this thread after all the excitement over a few wee little throwballs.

Ekka · 10th October 2007, 10:44 PM

Quote:

Originally Posted by Mangoes

Thought I might bump this thread after all the excitement over a few wee little throwballs.

So what are trying to do, copy the Aussie design or offer ideas?

Quintrex · 11th October 2007, 02:12 AM

Total Height Safety's Friction drum does me, and I'm quite capable of making my own.

Ekka · 11th October 2007, 02:24 AM

Yeah I've used them, I think Billy Goddard designed and builds them?

Quintrex · 11th October 2007, 03:53 AM

Bill designed them, i think he has an engineer build them. I'll ask him and let you know.

Ekka · 11th October 2007, 04:39 AM

Have you sat through one of his rigging sessions?

Pretty good, got some good log drop chart info, and a neat little model to show you winching up and slewing branches.

Hey, maybe he can put an ad up for here with a video and stuff.

TrevMcRev · 11th October 2007, 05:06 AM

I've used one of them. Good friction for big lowering. Not very efficient at lifting compared to a grcs.

Quintrex · 12th October 2007, 12:43 AM

Over the years I have done a lot of training with Bill. Rope walking, advanced rigging for removals and he has spent days with our crews and assessed and then trained them in various aspects of teamwork and efficiency.
I found it all paid dividends straight away.

Ekka · 12th October 2007, 01:08 AM

The man knows his stuff, you can tell.

Ace Master · 14th October 2007, 06:20 AM

The Bill Goddard friction drum and the GRCS system are all very good tree equipment, each one has a different speciality capabilties, the Bill Goddard unit is ideal for large downward forces, in a small compact friendly unit.The GRCS has a upward lifting force, and is a pull apart unit, so each one can do the same thing but have different outcomes.

TreeCo · 14th October 2007, 06:42 AM

I would like to see these devices designed so additional 10,000 lb. binders could easily be attached. The binder would not be part of the device, just carried along and used when needed. A projection off of the bottom of the device to catch a binder would be a good start.

1st June 2007, 06:34 AM	#1 (permalink)
TrevMcRev Over mature heritage tree Join Date: Feb 2007 Location: Melbourne, Victoria, Australia. Posts: 732	Building the Aussie GRCS Bought a winch today so time to get to designing/farbrication of a GRCS type system. THe fabricator can engineer the device using FEA, Finite Element Analysis. This is what is used to "test & measure" the effect of loads placed on an object in numerous ways as used to test safety in the design of rollcages. Im confident this will be as well, or better made than a GRCS. I'd love feedback from anyone with experience with this device as to how they think it could be refined. __________________ Melbourne Arborist, Total Tree Care, Pruning, Tree and Stump Removal

1st June 2007, 02:50 PM	#3 (permalink)
JayD Over mature heritage tree Join Date: Feb 2007 Location: Sydney Posts: 888	Hi Trev, Use alloy grade steel it will be lighter and stronger,and the points Ekka made are good aswell,maybe a small directional fairlead above the winch to minimise friction,it's a bit like reinventing the wheel but with the knowledge of actually using it first.Don't disregard the product being sold as the engineering has already been done for you just re inforce on that. __________________ Free Tree and Green Industry Link Directory

9th June 2007, 01:38 AM	#4 (permalink)
JayD Over mature heritage tree Join Date: Feb 2007 Location: Sydney Posts: 888	Hey Trev, How's it going,have you started it yet?..If so...Where's the picy's. __________________ Free Tree and Green Industry Link Directory

26th June 2007, 05:36 PM	#6 (permalink)
JayD Over mature heritage tree Join Date: Feb 2007 Location: Sydney Posts: 888	There's alway's something taking our time,maintenance sucks but you have to do it...me myself, I think re inventing the wheel will be hard, That's why I suggested re inforcing on whats already out there..like a work in progress..things you notice and say that would work better if I did it like this...etc.don't be afraid to change(modify things)as you go just keep a record of what you have done:eg build procedure,if you weld, welding procedure,size and tensile strenght of bolts,mounting rachet and strap max,min working load...bring the powers that be in on it they will tell you what they expect from you in the way of certification..and posibly stop you from making a costly mistake.It will be good to see the finnished product..but don't take to long to do it or I will beat you to it.Good luck with it Trev. __________________ Free Tree and Green Industry Link Directory

10th October 2007, 08:31 PM	#7 (permalink)
Mangoes Sappling Join Date: Jan 2007 Location: n/a Posts: 26	Re: Building the Aussie GRCS Thought I might bump this thread after all the excitement over a few wee little throwballs. __________________ ?Perhaps a truer indication of mental illness?..can be found in the far more common tendency to passively accept the abuse of the very systems that keep us alive.? - John Vaillant; The Golden Spruce

11th October 2007, 02:12 AM	#9 (permalink)
Quintrex Mature tree Join Date: Jun 2007 Location: Sydney Posts: 442	Re: Building the Aussie GRCS Total Height Safety's Friction drum does me, and I'm quite capable of making my own.

11th October 2007, 02:24 AM	#10 (permalink)
Ekka Eric Frei Administrator - Brisbane L5 (Dip) Hort Cert III Arb + some Join Date: Jan 2007 Location: Brisbane Posts: 6,606	Re: Building the Aussie GRCS Yeah I've used them, I think Billy Goddard designed and builds them? __________________ Remember to use the "search" function, if you have answers/questions post them so everyone can benefit. Free Tree and Green Industry Link Directory Qualified Brisbane Tree Lopping Brisbane Tree Care, Consultations and Arborist Reports Forum Sponsors

11th October 2007, 03:53 AM	#11 (permalink)
Quintrex Mature tree Join Date: Jun 2007 Location: Sydney Posts: 442	Re: Building the Aussie GRCS Bill designed them, i think he has an engineer build them. I'll ask him and let you know.

11th October 2007, 04:39 AM	#12 (permalink)
Ekka Eric Frei Administrator - Brisbane L5 (Dip) Hort Cert III Arb + some Join Date: Jan 2007 Location: Brisbane Posts: 6,606	Re: Building the Aussie GRCS Have you sat through one of his rigging sessions? Pretty good, got some good log drop chart info, and a neat little model to show you winching up and slewing branches. Hey, maybe he can put an ad up for here with a video and stuff. __________________ Remember to use the "search" function, if you have answers/questions post them so everyone can benefit. Free Tree and Green Industry Link Directory Qualified Brisbane Tree Lopping Brisbane Tree Care, Consultations and Arborist Reports Forum Sponsors

11th October 2007, 05:06 AM	#13 (permalink)
TrevMcRev Over mature heritage tree Join Date: Feb 2007 Location: Melbourne, Victoria, Australia. Posts: 732	Re: Building the Aussie GRCS I've used one of them. Good friction for big lowering. Not very efficient at lifting compared to a grcs. __________________ Melbourne Arborist, Total Tree Care, Pruning, Tree and Stump Removal

12th October 2007, 12:43 AM	#14 (permalink)
Quintrex Mature tree Join Date: Jun 2007 Location: Sydney Posts: 442	Re: Building the Aussie GRCS Over the years I have done a lot of training with Bill. Rope walking, advanced rigging for removals and he has spent days with our crews and assessed and then trained them in various aspects of teamwork and efficiency. I found it all paid dividends straight away.

12th October 2007, 01:08 AM	#15 (permalink)
Ekka Eric Frei Administrator - Brisbane L5 (Dip) Hort Cert III Arb + some Join Date: Jan 2007 Location: Brisbane Posts: 6,606	Re: Building the Aussie GRCS The man knows his stuff, you can tell. __________________ Remember to use the "search" function, if you have answers/questions post them so everyone can benefit. Free Tree and Green Industry Link Directory Qualified Brisbane Tree Lopping Brisbane Tree Care, Consultations and Arborist Reports Forum Sponsors

14th October 2007, 06:20 AM	#16 (permalink)
Ace Master Mature tree Join Date: Aug 2007 Location: Australia, Vic, Melbourne Posts: 267	Re: Building the Aussie GRCS The Bill Goddard friction drum and the GRCS system are all very good tree equipment, each one has a different speciality capabilties, the Bill Goddard unit is ideal for large downward forces, in a small compact friendly unit.The GRCS has a upward lifting force, and is a pull apart unit, so each one can do the same thing but have different outcomes. __________________ The Mt Dandenong Ranges Tree Specialists

14th October 2007, 06:42 AM	#17 (permalink)
TreeCo Mature tree Join Date: Jan 2007 Location: Georgia, USA Posts: 262	Re: Building the Aussie GRCS I would like to see these devices designed so additional 10,000 lb. binders could easily be attached. The binder would not be part of the device, just carried along and used when needed. A projection off of the bottom of the device to catch a binder would be a good start.