“Chinese” electric chainsaws and delimbers: what are they worth?

[Christophe]

You need trailers and tractors, right?

It's planned, everything should fit into an agricultural trailer...

[Christophe]

I estimate from this photo that there are actually between 450 and 550 fir trees

What did these poor trees do to you to end up like this?

Did they grow up too fast?

There might also be this:

[izentrop]

Giant Mikado? Stakes for pole beans?
Unless you start growing hops?

For a beer lover, this is the most plausible option

[izentrop]

When it is well worn, a blow with the grinder, but you have to take it easy with the right angle

Show the method! I'm interested !

There are 2 very precise angles to respect...and they vary depending on the chain...I think that with a 1200W angle grinder it's just impossible not to permanently destroy your chain...
There are sharpeners for a few dozen euros…

As my files were worn, I have a 3 mm thick disc rounded at the edge due to wear.
I got a vacuum cleaner dimmer set to minimum to slow down the grinder.

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By going slowly, stroking the metal at an approximate angle, the main thing is to make a good bevel so that it bites effortlessly and as you have to repeat the operation often to remain efficient, it's quick and effortless. ..

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The thing is, I finished a span of wood this winter. I'm going to cut at 50 with my electric chainsaw and move the two spans that we see. the one at the bottom being the oldest and to make it available first.
All this to be able to enter the next cut in the barn, as long as I'm in good shape

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[Christophe]

I published a video of the construction site:

[Remundo]

nice job Toff

Both for video and for cutting trees.

I tried my little Ryobi, it's pretty much like yours.

Great comfort of use thanks to the reduced weight, less noise and less vibration than a thermal one.

The autonomy on the other hand is less good, but can be resolved by several sets of batteries. In the forest, on the other hand, we don't often have the area!

[Christophe]

I don't know with what capacity of tank and battery* you are comparing but the Stihl, I think a 280 or 290, from my friend who also worked for me on this site it was approximately 0.4L-0.5L...and it had to refuel every 20 minutes in these working conditions where my batteries lasted around 1 hour (and between 1h30 and 2h00 for the Parkside in 1/2 speed because it is in 2*8Ah...).

This is probably explained because there is a lot of “dead” time and therefore a lot of waste in slow motion on this site, where the electricity is at 0.

So we work faster with electric power, on this type of site, even if I wrote working as quickly as with thermal power in the conclusion....

Okay, I'm glad this is over! Now I have to find something else to do to improve my PTV!!!

ps: * if I understood correctly, you reused old batteries? How old are they and what capacity (in Wh?)?

[Remundo]

They are recent, they are 18V 5A.h from Ryobi, they are 1 year old and I would say that they have been cycled around ten times.

I have 4 because my Ryobi mower uses 2 in series to go up to 36V. My mower works for about 1 hour on grass that is not too high for a cutting width of 45 cm. On the other hand, in taller and/or wet grass, it is more like 30 minutes.

The Ryobi chainsaw only uses one 18V - 5A.h battery, so with 4 block batteries and downtime, I can last almost a day

[Christophe]

My 2 "big ones" use 2 of 18V in series: 4Ah and 8Ah... the same principle as your mower.

So obviously by using 1 * 5Ah you are missing 3/8 (40%..) and 11/16 (70%!!) of battery energy compared to mine 2... the comparison with the thermal is necessarily at the the advantage of the latter for you...

Afterwards you will change your battery sooner than you fill up your tank... I am sure that 2 of your batteries will last longer than a single tank of your thermal (but probably not a 10L jerrycan... )

The calculation in battery Wh would give the same results:

1 * 5Ah 18V = 90 Wh
2 * 4Ah 18V = 144 Wh
2 * 8Ah 18V = 288 Wh

[Christophe]

Ah I didn't tell you: on the parkside I lost the circlip which held the washer on the chain drive sprocket...
This, I think, because of the small branches which got stuck in this place (damn fir trees...)...

So rather than going to 3 stores and wasting 3 hours to find a compatible one, I printed a 3D part that I glued to the axle and the washer...if one day I have to change the pinion, it Just take it off...and if it breaks, print another one...total duration: 1 hour...price a few cents...

I worked for another hour on this repair, no problems...normally there is not too much axial effort at this level and the limbing work is finished!