portawrap dimensions

[Frank]

yeah, loads of prototypes need to be broken first to assetain the breaking capabilities etc etc.

[Andy Collins]

I have to question the motives behind replicating a product thats already available. Is it to save a couple of quid? cant see that with testing and production costs. Or are you re-inventing the system with a whole new idea? Most ideas are borne from necessity, ie there isnt a tool to do the job, yet in this case there is a multitude available at affordable prices.

Are you planning to market your new product? If so be aware of patents and other legal restrictions.

[finchy001]

I have to question the motives behind replicating a product thats already available. Is it to save a couple of quid? cant see that with testing and production costs. Or are you re-inventing the system with a whole new idea? Most ideas are borne from necessity, ie there isnt a tool to do the job, yet in this case there is a multitude available at affordable prices.

Are you planning to market your new product? If so be aware of patents and other legal restrictions.

 

Hi Andy,

 

No its not to save a couple of quid, its more an exercise to see what I would find useful in a portawrap device through trial and error.

 

I have looked at the new rc range and they seem to be spot on so I'm picking one up in January. But in the mean time, I'm keen to tinker and see what I can come up with. I see what you saying about things being borne from neccessity, but really this is an exercise for my own amusement that I was hoping to use in various jobs, but it would seem more fitting to use it in a controlled enviroment.

 

If I do feel something is worthwhile then I may look at marketing it, but the manufacture and sale of a stress loading device will be a perilous endevour I would imagine, and probably best left to those such as Buckingham, ISC and RC

[educated arborist]

I dont think you could LOLER a homemade portawrap????

 

Surely it must need a rating and CE marking??

 

No port-a-wraps are CE marked & they do not need to be, loler inspecting a home made/ bespoke device is not always possible, however, it may sometimes be possible.

 

i have previously been able to over see the manufacture of a bespoke device, having them tested destroying 2 and then appropriately proofing the remaining 3 of a batch of 5.

 

Developing & testing equipment is complex & i would not encourage any1 without extensive expertise to attempt it.

 

The diameter of the bars on the device is far from the knowledge/ expertise you'd need to develop/ manufacture your own device, how’s your knowledge of heat treatment?? (perhaps done in a sealed quench atmosphere controlled furnace)?? electro plating in line with EN362:2004??

 

There are plenty of good, reasonably priced devices on the market & can't really see any benefit in copying one of them. If you perceive that you have a significant innovation then perhaps you should approach an expert with it.

[finchy001]

No port-a-wraps are CE marked & they do not need to be, loler inspecting a home made/ bespoke device is not always possible, however, it may sometimes be possible.

 

i have previously been able to over see the manufacture of a bespoke device, having them tested destroying 2 and then appropriately proofing the remaining 3 of a batch of 5.

 

Developing & testing equipment is complex & i would not encourage any1 without extensive expertise to attempt it.

 

The diameter of the bars on the device is far from the knowledge/ expertise you'd need to develop/ manufacture your own device, how’s your knowledge of heat treatment?? (perhaps done in a sealed quench atmosphere controlled furnace)?? electro plating in line with EN362:2004??

 

There are plenty of good, reasonably priced devices on the market & can't really see any benefit in copying one of them. If you perceive that you have a significant innovation then perhaps you should approach an expert with it.

 

As my Father is the welding engineer, the technical side is down to him, after 40 years welding I am confident he knows the correct methods for manufacture.

 

Just had a scout about the forums and saw this interesting design:

 

http://arbtalk.co.uk/forum/rigging-roping/9481-woody-lowering-device.html

 

Like I say, its really a design exercise to put my own spin on something.

 

I like the idea of using straps like the woody device does, and the dual anchor system to hold it to the stem minimizing movement, and the new RC device uses a fantastic looking method of what I would imagine is a rope grab style device on the arm to allow greater leverage to take up slack. I know i maybe re-inventing the wheel as it were, but its often quite enjoyable to challenge yourself with these things.

 

When we get something together I will post pics and you can all see what you think