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geekIT

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  #2563063 12-Sep-2020 19:20
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Scott3: Other option you could consider is a big inverter to run off your car battery (with engine running). For example $321 buys this 2000w modified sine inverter (4000W peak). These inverters are have non momentum so are really fussy about starting current, but my gut feeling is 4000W should be sufficient. Under 1/2 the price of the generator, and with minimal storage & mantaince requirements this looks good on paper. - I don't know if this comes with battery clips or if you would need to make them up. Haven't tried to run a saw off an inverter myself.

 

Thanks, Scott3. Do you have a link for that inverter?





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Scott3
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  #2563073 12-Sep-2020 20:44
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geekIT:

 

Thanks, Scott3. Do you have a link for that inverter?

 



https://www.mrpositive.co.nz/energizer-2000w-12v-modified-sine-wave-inverter

 

Be aware that AC motors generally won't run as efficiently on a cheap modified sine inverter. This can cause slight power loss, and potentially can cause the motor to run a bit hotter which could damage it.

 

I don't think you will have much of an issue, but something to be aware of.

If you saw has a brushed motor, they should run fine on modified sine wave.

Not sure if anybody on here has tried one of the really cheap sine wave inverters? like https://www.trademe.co.nz/a/motors/caravans-motorhomes/parts-accessories/batteries-inverters/listing/2776888640


 
 
 
 


MikeAqua
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  #2563395 14-Sep-2020 07:17
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I have 86mm B&D matrix circular saw I've used for cutting up pallet planks.  It struggled a little, but it did the job.

 

I agree with tchart that a reciprocating saw is a better choice.  It's amazing what a reciprocating saw will get through. I recently dug out a tree, that was growing under our fence. The reciprocating saw was used to cut through secondary roots, up to about 75mm thick.

 

 

 

 





Mike


Bung
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  #2563421 14-Sep-2020 09:16
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Reciprocating saw blades can be a bit delicate if you let them jam. A circular saw usually just risks losing a tooth if you hit a big nail and you can get demolition blades.

webwat
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  #2573116 23-Sep-2020 22:42
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BlinkyBill:

 

My Dewaly cuts through anything, wet/dry/hard/soft. It’s less about the battery these days, and more about the blade for the job. I’m no expert though.

 

 

Yes mine is great too, but I have a fine toothed blade on it. It does chew through batteries so you need a couple already charged if you have lots of cuts to do, and the 150mm blade isn't always enough. I found DeWalt batteries way better than Ryobi...





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