Author Topic: 80 Volt Cordless Chainsaw!!!  (Read 412 times)

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Offline Philbert

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80 Volt Cordless Chainsaw!!!
« on: December 25, 2014, 10:53:07 am »
It's here!  All the jokes about 'modding' a battery saw may be coming true!
http://www.greenworkstools.com/80v-pro/80v-pro-chainsaw/80v-18inch-chainsaw/#product-tabs1

18 inch bar, 3/8 (low pro?, standard?) chain, 2.0 Ah battery, weight (?) - $349 with battery and charger.

They claim it is equivalent to a 42cc gas chainsaw. Does 80 volts give it 2x the torque of a 40 volt saw? More speed?  Longer or shorter battery life?

Philbert

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Offline Cut4fun .

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Re: 80 Volt Cordless Chainsaw!!!
« Reply #1 on: December 25, 2014, 11:10:46 am »
I had seen that one earlier but it slipped my mind about posting it. Thanks.
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Offline Cut4fun .

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Re: 80 Volt Cordless Chainsaw!!!
« Reply #2 on: December 25, 2014, 11:13:31 am »
says,  cuts are about same amount.

When comparing actual use cutting torque
Over 150 cuts through 4x4 pressure treated pine performed during a single battery charge

30% more torque



Features

80V Li-Ion System takes the lead in highest and most powerful gas-free cordless system

    Capable of 150+ cuts with fully charged 2.0 Ah battery*
    Gas comparable delivering 2.7HP, equivalent to a 42cc gas powered chainsaw
    Digital controlled brushless motor for more torque, quiet operation, and longer life
    Steel bucking spikes and durable metal wrap around handle
    Electronic chain brake for safe operation
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Offline Philbert

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Re: 80 Volt Cordless Chainsaw!!!
« Reply #3 on: December 25, 2014, 11:55:47 am »
The brushless motors is what most of the better cordless tools, including contractor type tools, are going towards.

I suppose that pressure treated pine might be a uniform media for test cuts, but we all know that we use different saws for construction lumber and trees.  It would be nice to try it side-by-side with other chainsaws: battery, corded, and gas, in more firewood sized/type wood to see what it's capabilities are, and how it stacks up.

From the photos, it looks similar to the Ryobi saws - wonder if they have some common design or manufacturing heritage.

The chain in the photos really looks strange.  I was trying to zoom in to see if they used low pro or full sized 3/8 pitch chain, and it almost looks like the reduced kickback bumpers on the tie straps are mounted backwards!

Would love to try it.  Interested to see if others follow suit.

Philbert

Offline Eccentric

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Re: 80 Volt Cordless Chainsaw!!!
« Reply #4 on: December 25, 2014, 04:18:25 pm »
Interesting.
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline Philbert

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Re: 80 Volt Cordless Chainsaw!!!
« Reply #5 on: December 26, 2014, 01:46:46 pm »
If they get it up to 120 volts, maybe it will also come with a cord?

Philbert

Offline Eccentric

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Re: 80 Volt Cordless Chainsaw!!!
« Reply #6 on: December 26, 2014, 02:32:50 pm »
If they get it up to 120 volts, maybe it will also come with a cord?

Philbert

They'd have to have a transformer or rectifier for you to run a 120V DC saw on 120V AC house current.
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline Philbert

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Re: 80 Volt Cordless Chainsaw!!!
« Reply #7 on: December 26, 2014, 04:05:37 pm »
There you go throwing logic and science at me.

How large/heavy would a 120 volt AC to DC inverter be for something like this?

Philbert

Offline Eccentric

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Re: 80 Volt Cordless Chainsaw!!!
« Reply #8 on: December 27, 2014, 12:06:22 pm »
There you go throwing logic and science at me.

How large/heavy would a 120 volt AC to DC inverter be for something like this?

Philbert

Hmmm......

Not sure.  It'd have to handle far more current than the usual transformers we see for charging and powering DC appliances with AC house current.  Gotta ask somebody who's in the industry.  Barneyrb comes to mind.  He's here IIRC.  He's on SH too.

I do know that what we're talking about here (converting AC to DC) would be called a transformer or rectifier.  A device that converts DC to AC is an inverter.  That's pretty much the limit of my electrical knowledge in this case... 
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

 

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